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Rapid Freeze ICE FLAKERS - Catalog

1. AUCTION ACCUMULATOR K i ICE FLAKER VALVE FILTER DRIER REC EIVER CONDENSING UNIT ADJUST LOW PRESSURE SWITCH All Rapid Freeze Remote Condensing units have a Low pressure Operating pump down switch This low pressure switch needs to be set at 3 5 PSIG cut out R 22 or R 404A to cut out the compressor when the suction pressure reaches this setting To Adjust the Low Pressure switch turn the adjustment stem clockwise to raise the cut in setting counterclockwise to lower the cut in setting The cut in right adjustment stem setting should be set at 23 PSIG for R 404A 16 PSIG for R 22 The differential setting cut out left adjustment stem should be set at 18 PSIG for R 404A 11 PSIG for R 22 LE DIFFERENTIAL CLOSES ON RISE OF PRESSURE 93 5 Installation of the Condensing Unit Approximate Refrigerant Charge System Lbs 100 Linear ft of liquid line Model 10 000 21 2 24 4 15 000 123 142 21 2 24 4 20 000 188 216 36 1 41 6 40 000 269 x 2 309 x 2 36 1x2 41 6x 2 System charge is approximate for ice flaker amp condensing unit s only Add additional charge required for liquid line length 40 000 pound ice flaker uses two 2 separate condensing units Table above gives approximate additional refrigeration charge for each 100 linear ft of liquid line IMPORTANT NOTICE DO
2. OS L 0EZ dWnd dHB L 3AIHO dhi 09 1 08 HIMOd 09 L 0 2 802 3504 MO T3NVd TOHINOO HKH 391 HOSS3HdWOO Tvnd VOS LL00S3 NOILVHOdHOO 3MOH 1 3101 13GON 3 DIV 13 321 504 Sarggs NI u Ou 9 SHOSSSUdANOO WONJ SAVT3U Z CUD 9 L EYI SQv31 AUVONOI3S SILON NOILOSNNOO IVNIWUSI O aowaaaiow3 V Lene 30U1NOO ma anos V 8 V v M3NWAGIONSIOS o I 34 o 4F 4F 9 am wos iy m 449 Lo ay s vi et Z ad o B y inizi VIVE on en 09 L 0 2 902 YOLOW asna ZA aumiva NMOG dN wm nos anna LL ssaa MOSQ HOI ssaud WG MOT NOILOASMOL HR MOSS gt Ozi Z ON HOSSTUdWOD V J vus ahh don ver voe D A s f d f 010A ZANA Pm d o Q auy de bo kt es M sumuoasgandans ZZ Bio auma NMOG Nd NAH iOSSSdWOO wouououd ff and HOSIGHOIH SSJYd WO MOL NOILONS MON unouoHoNVuS g TLIANNOISIONIW ME da ing Diagrams Ut 13 Wi Remote Low Side Electrical Schematic 230 3 60 Dual Compressor Condensing Units LT zrusm 30930 no Lund Tear b wa as 0 iw 13 SHIM 0131 BD OI te tan a kg bes ELE Kr dW d dH L ahd SHOLINI 2wHd3LHI dH DEED H3NOd Baar use ONY Mad 04 TMIR lt gt Adond aM rt lY3H Bey SLNN SOO UYNI Z HIM EN Ed LOS YNY 34 Lk Tie i CNA dod TOaLNOS 1S3AIN WM AR CEMPUN ITIN NOL LVHOdHHOOD 3AKOH 19 83 9825 130014 YIU PI 324 und aps 2 WIR JU Mett TW AUOD GAR 2 1y Im SL 22 seg T HU SM Vu LEUR 3U PLEHRA IDN dADd An SARA I
3. Table 4 Electric Panel Parts Part Description Part Number Parts for E20T40 Control Panels Control transformer 230V AC primary 24VAC secondary E20T31 Solid state control module E20T48 Overload reset button normally open E20T23 ON OFF rocker switch E20T24 4 pole contactor 24VAC coil for drive motor E20T44 230VAC single pole double throw relay E20T45 Relay base socket for E20T45 relay E20T46 Parts for E20T42 Control Panels 380V 3 50 CE mark Disconnect switch DSC1 E20T53 Drive motor starter with overload M1 M1 DSC E20T54 Pump motor starter with overload M2 M2 DSC E20T55 10 Amp single pole circuit breaker CB1 E20T56 Red oil tight indicating lamp 2 LP1 LP2 E20T57 Green Oil tight indicating lamp LP3 E20T58 Oil light On Off switch SW1 E20T59 Off delay timer TMR1 E20T61 DPDT Mini Relay R1 E20T62 Relay Socket Base for Timer Relay E20T63 Relay socket base for Mini Relay E20T64 Parts for E20T47 Control Panels 480V 3 60 Drive motor starter with overload E20T54 Water Pump Contactor E20T72 Control Transformer 480v Pri 240v Sec 300VA E20T74 Ice Flaker initiate relay E20T62 Water pump run relay E20T62 Mini relay base E20T46 Off delay timer 5V012 Timer base 5V013 3 amp fuse 600V CCMR 3 2 amp fuse 600 V CCMR 2 2 Amp fuse 250V KLDR 2 Number in parentheses indicates quantities if more than one is r
4. did LL Z UNDO ViivZ dH L M 5 OSIEIOgE YO LOW INYA ax SY3HLO A8 G3riddns NOI193108d LO HINYA LOSNNOOSIO NIVW 0S EI08E J 13 Wiring Diagrams Figure 25 51 RHS 76 RHS Condensing Units Power Schematic d JAGH SIINN ATE SOLOW NYJ H ISNI d YOLIVLINOD 2 UNADT 1 033 N3H D E 1 lk uatrAs A43JVS TISNA 2051 in e3dUeld S04 ANU SIOLINENDI qen ZIL 345 LINN 33S 78 ing Diagrams Ut 13 Wi Figure 26 51 RHS 76 RHS Condensing Units Control Schematic NOL I NOL VAJINAS 432 AVTIC 3WIL Gi A TMUM FLVLS WSS NUILOSIUSd UO SINQSIN3S JUS c XH ou INWA OS Nanizi ID Sea REM Eee uc HOLIAS ZER AUT d H31IAS JINSS34d HOIH SCH NUIOVINDJ S SS3JUdWUJ 2272 Ea qN39371 i g D I i TINVd Zap T3NVd IMOH ND dr OL NU ER OL IH ISVIANVAD JNISIA TTIId DSNIMIA AYOLIVA L 038 NIHM I 133HS HVaDVIG YIAOd NIVN NO S3WelUJSNVelL HU3 Ss3dd AUT Di NII dav w ro s 7 C I 4109813 N3AT3234 d31V3H 3 V lzAH IO IZS NIE 48 ze UN N23 AJN 79 ring Diagrams i 13 Wi Figure 27 101 RHS amp 201 RHS Condensing Units Power Schematic d JIMOH 39 1000 u Ir x NY INI IUUJ e auss3ddWDa TILON SV 1d32X3 DAY are MIN ONIAIM TIY mom JIJIA A Br 9 sls STWNIH231 V
5. This LED will glow prior to actual shutdown of drive contactor 6 Ice flaker contactor output output is energized when input signal is present and control is not in overload condition When input signal is removed switch or ice level control open timer circuit is started Output will stay energized until timing circuit releases output Output is de energized immediately upon overload condition 7 8 Isolated output contacts for liquid solenoid valve normally open Contacts close immediately upon input signal 3 stay closed until input signal is removed Contacts open when input signal is removed or when overload condition exists 38 9 Maintenance 9 Maintenance 9 Maintenance Evaporator To keep the evaporator in peak performance the ice flaker should be cleaned with an approved ice machine cleaner at least twice a year more often if water conditions cause mineral build up using an approved food grade ice machine cleaner The water pump is used to circulate ice machine cleaner through the system Refer to cleaning instructions below for complete cleaning instructions Ice Machine Cleaning Instructions An important part of ice flaker maintenance is to clean it frequently so that the water passages are not clogged and the freezing surface is clear and free of scale caused by calcium and iron deposits Frequency of cleaning depends upon the quality of water In extreme hard water areas it may be nece
6. 115 230 1 50 60 3 4HP E50M2 1HP ODP Drive motor 208 230 63 460 3 50 60 1HP E50MA G200M2 TEFC Drive motor 220 380 1 60 1HP TEFC EMO Drive motor 110 200 220 1 50 1HP ODP EEN Drive motor 220 380 3 50 ODP EE 63A Drive motor key E50M8 G200M3 65 Flexible couplin 66 pang E50N1 G225N1 67 complete Number in parentheses indicates quantities if more than one is required 88 14 Parts List 76 1 RL 101 1 RL ge ET 101 2 RL ERIS n Part Description Part Number 67A Flexible coupling key ESONA G225N2 for shaft Flexible coupling key _ G225N3 for reducer Speed reducer 60 E50R 1 935 G200R1 cycle 68 Speed reducer 50 E50R2 935 cycle 75 Handhole cover E50A2 G225A2 removable Thermostatic expansion valve R 404a E50V6 2 E75V3 2 E50V6 Thermostatic expansion valve R 22 E50V5 2 E75V2 2 E50V5 Liquid Line Solenoid Valve Single Circuit Bus DID Hee Liquid Line Solenoid Valve Dual Circuit I KEE BIS Control panel 230 1 60 2 light E20T40 RL Control panel 230 1 60 6 light E20T40 SCA Table 3 Reduction Ratios For Large Capacity Flaker Speed Reducers Flaker model sizes Status Speed Reducer model 60 cycle 50 cycle 5 7 1 2 10 ton day Current 935MDVD 750 1 600 1 20 ton day Current 943MDVD 600 1 500 1 Number in parentheses indicates quantities if more than one is required 89 14 Parts List
7. E50K3 G225K3 retainer Top bearing replacement kit S 24 includes bearing 2 PR seals shaft sleeve 26 Bottom main bearing E50K4 G225K3 retainer Bottom bearing replacement kit _ apa includes bearing 1 Paez seal shaft sleeve 27 Bottom bearing cover E50K5 G225K5 28 Main bearing pull out ESOK6 G225K6 washer 2 35 Water distribution side 36 spout and fitting 12 Poe d Water distribution Trailing spout and G225H4 fitting 37 Water distribution 3 g bottom spout and E50H31 fitting Water Distribution Leading spout amp fitting G225H3 5 39 Water sump tank E50H8 G225H5 40 Water sump bolt down E50H11 G225H6 cover Number in parentheses indicates quantities if more than one is required 87 14 Parts List 76 1 RL 101 1 RL ge ET 101 2 RL SE SE Part Description Part Number 41 Water sump removable E50H15 G200 HA cover 42 Water sump gasket E50J3 43 Water float valve E50H18 G200P1 ad nee ae CNBHF SG BROS fitting 53 Water tube E50H22 E75H4 E100H1 54 Water tube insulation E50H32 E75H2 E100H2 55 Water tube valve brass NPBR 075 CL _ nipple 56 Water tube fitting CNM SG BR14 12 57 Water tube regulating E50H24 N valve Water pump 230 460V 3 50 60 E3001 G20001 62 Water pump 220 230V 1 50 60 E50Q2 i Water pump 575 V 3 60 E50Q9 Drive motor 208 230 460 3 50 60 1HP E50MI G200M1 ODP Drive motor
8. EES STNA KKK CAUTION ES WHEN PIPING ICE FLAKER TO A CENTRAL REFRIGERATION RACK LIQUID LINE MUST BE CONNECTED TO THE RECEIVER SIDE OF ANY DEFROST SOLENOID CONTROL VALVE TO INSURE UNINTERRUPTED LIQUID FEED SUPPLY DURING NORMAL DEFROST CYCLES OF THE RACK nk CAUTION ES 4 4 Installation of the Rapid Freeze Flaker The ice flaker as supplied by Howe Corporation was thoroughly cleaned and dehydrated at the factory Foreign matter may enter the system by way of the field piping Therefore care must be used during installation of the piping to prevent entrance of foreign matter Install all refrigeration system components in accordance with applicable local and national codes in conformance with good practice required for the proper operation of the system The following procedures should be followed a Do not leave dehydrated equipment or lines open to atmosphere any longer that is absolutely necessary Use only clean new refrigeration grade copper tubing Suction lines should be sloped LAT per 10 feet towards the compressor Suitable P type oil traps should be located at the base of each suction riser of four 4 feet or more to enhance oil return to the compressor When brazing refrigerant lines an inert gas should be passed through the line at low pressure to prevent scaling and oxidation inside the tube Dry nitrogen is preferred Use only a suitable silver solder alloy on suction and liquid l
9. Grease top amp bottom bearings gt lt Grease Bearings on Rotary blade 20 ton units only 43 9 Maintenance 3 6 9 12 months months months months x x x x Check and replace speed reducer oil standard oil Check and replace speed reducer oil synthetic oil Grease speed reducer bearings t Sanitize ice machine Check bearing wear TT Check cutting blade clearance t Check rib heaters for proper operation if furnished Replace squeegee As necessary Replace water float valve As necessary Clean and sanitize at least annually more frequently if necessary Inspection should include at a minimum the following parts ice deflector squeegee squeegee wrapper water distribution tubes and float valve Speed reducer oil should be changed every 2 500 hours of operation 5 000 hours with synthetic oil or every six months whichever occurs first The above chart assumes continuous operation of the ice flaker T Only required on speed reducers equipped with grease fittings at the bearings Use food grade grease such as Chevron FM or equal TT Use an industrial feeler gauge If wear is greater than 0 007 bearings may be wearing excessively Contact factory for guidance t Use an industrial feeler gauge Check blade at top and bottom in at least four locations around the evaporator quarter points Clearance should be 0 004 0 006 in all locations If cl
10. NOT ATTEMT TO ADJUST ICE FLAKER SPLIT SYSTEM FOR EVAPORATOR SUPERHEAT REFER TO START amp ADJUST SECTION OF THIS MANUAL FOR PROPER ADJUSTMENT OF EPR AND TXV VALVE ON ALL HOWE ICE FLAKERS IMPORTANT NOTICE 24 Fan Cycling Control adjustment 5 Installation of the Condensing Unit On large capacity 5 20 ton models multiple fan condensing units the fan s closest to the header compressor is controlled by ambient switch to be set 50 F The additional fan s is operated on a pressure switch The pressure switch should be set to cut in 250 PSI differential set to 50 PSI Howe 10 ton amp 20 ton ice flaker condensing units the fans are cycled in banks Fan Ambient Control Fan Pressure control Diff Pres Cut in Lbs PRES LES E Le suo mm lt 35 00 DIFF CUTIN CUT OUT IS GO LESS DIFFERENTIAL CLOSES DN RISE OF PRESSURE Diff Pres Cut in Lbs 50 PSIG 250 PSIG 50 PSIG 250 PSIG Condenser Fan Controls Model Fans Lead Fan Second Fan Lead bank of Fans 2 Second bank of Fans 2 10 000 Ambient Pressure 15 000 Ambient Pressure 20 000 Ambient Pressure 40 000 Si EI N N Ambient Pressure 25 5 Installation of the Condensing Unit HEAD PRESSURE CONTROLS All Howe supplied condensing units 15 HP amp larger use a two valve
11. RHS 144 87 07 56 0 2 5 8 1 1 8 3750 51 RHS 144 44 5 56 0 2 1 8 7 8 1800 a 76 RHS 144 44 5 56 0 2 1 8 7 8 1965 ST 101 RHS 144 87 07 56 0 2 5 8 1 1 8 3600 RS 201 RHS 144 87 07 56 0 2 5 8 1 1 8 3750 Model 201 RL ice flaker requires Two 2 model 201 RHS condensing units one for each circuit Weights amp dimensions are per each condensing unit 2675 12 Ice Flaker and Condensing Unit Drawings 68 13 Wiring Diagrams 13 Appendix B Wiring Diagrams 13 Wiring Diagrams Figure 18 Remote Low Side Electrical Schematic 230 1 60 Standard 1203 me weu anon o m Lei n ON OMO Mg 7IOHLNOO 09 1 92 9 09 L 0 Z SUYOLOW dd 9 IAA 09 LOEZ J3MOd 09 L 0 2 90c T3NVd TOULNOD HIH 391 GANIVLNOD A138 ONM HOSSUdNOO 339 CUD ONLLOSNNOD N3HM HAHN BAONSY z GO 404 SNIMIM HOSSZHdMOO ALONTY TVOIdAJ 339 I v9S 0r1023 NOILVHOdOO 3MOH I SNLVLS BOSSAWANOD NO UINOW O14 13NVd HSH 39I NO SLHOIT SNELVOIONI 4O SNRHA Z N dO 3uv DH WO YO SunSS3ud HOH SIHIUMS ALIANS BOSSTEINOI dl INTIVA GION31OS GNON 340 LAS TIMBOIHM CUNT SNISN30N02 ND CUD ANN 104INOO ONLLVYOSI JO ONIM TL SALVELSNTU AManos GRIMIS SIHL M3UFL OVANVI HILIMS SM3HLO AB CS Met LIN ONISNSONO ONIUIM HOSS3HdNOO SLOWS TVOIdAL 70 iagrams Figure 19 Remote Low Side Electrical Schematic 230 1 60 Dual ng D Compressor Condensing Units irl 13 Wi TOULNOD 09 1 92
12. ambient temperature of the air surrounding the ice flaker Air from the freezer room should be directed away from the ice flaker opening otherwise the effectiveness of the heaters will be reduced If the storage area is held at 28 F 8 C or colder it is advisable to install the ice flaker 1 to 2 feet above the freezer and use a duct section to direct the ice into the storage bin 4 Installation of the Rapid Freeze Flaker Installation on Ice Storage Bins Rapid Freeze7 Ice Flakers are designed to run smoothly and without vibration The machines are usually mounted directly on top of an insulated ice storage bin The storage bin must have an insulated top with a drip pan that is an integral part of the top designed specifically for the Rapid Freeze Ice Flaker model installed on it The ice bin should be designed to support the weight of the flaker and the ice stored inside the bin It is recommended that the bin manufacturer be consulted before any ice flaker is placed on top of a bin The weight of each ice flaker machine along with the diameter of the hole required for ice entry into the bin is given on the specification sheet for that particular model Allow for a MINIMUM OF 10 clearance on top of the10 000 15 000 20 000 and MINIMUM 12 CLEARANCE for a model 40 000 pound capacity ice flaker for removal of the speed reducer and sufficient space around the unit approximately 3 feet for inspection and service Recommended Installati
13. be lifted straight up The top part of the flexible coupling will lift off with the gearbox the bronze star and bottom part of the coupling will stay attached to the main shaft 4 Loosen the setscrew on the top part of the coupling to remove it from the gearbox Care should be taken to avoid oil from seeping out of the relief vent located on the top of the gearbox in a set screw if the gearbox is turned on its side or up side down 5 The bottom part of the flexible coupling is attached to the shaft with a setscrew Loosen the setscrew and then lift the coupling off the shaft The use of a gear puller may be required to assist in removing either part of the coupling 6 Install the new or existing if it is not damaged flexible coupling to the shaft and speed reducer lining up the keyways with the key Re tighten the setscrews in both parts 7 Place the bronze star on the bottom part of the coupling 8 Install the gearbox with top coupling attached onto the top casting over the bottom part of the flexible coupling If the gearbox does not sit on the top casting properly you may need to loosen one or both of the setscrews on the flexible coupling to allow the gearbox to seat on the machined surface of the casting There should be a 1 16 gap between the top coupling half and the bronze star 9 Rotate the gearbox COUNTERCLOCKWISE ONLY until the mounting holes line up Once aligned re install the mounting bolts Re position the coupli
14. defective If both sensors are operating properly see d and e above replace control module 2 Solenoid valve energizes drive motor contactor does not energize Control module is defective Check voltage between terminals 2 and 6 on control module If voltage reads 24V AC replace the control module Contactor coil is defective Check voltage between terminals 2 and 6 on control module If voltage reads OVAC check wiring and contactor coil for defects 3 Solenoid valve does not energize drive motor contactor energizes Control module is defective Close all switches remove wires from terminals 7 and 8 on the control module With voltmeter set to ohms check for continuity between terminals 7 and 8 If contacts are open replace the control module Control panel power must be on for this test 7 amp 8 are an isolated contact with no wires connected there is no power going through contact to harm the ohm meter 46 Problem 10 Troubleshooting Possible Cause Remedy b There is a wiring defect Close all switches remove wires from terminals 7 and 8 on the control module With voltmeter set to ohms check for continuity between terminals 7 and 8 If contacts are closed check the line A jumper CR contacts wiring and solenoid coil Control panel power must be on for this test 7 amp 8 are an isolated contact with no wir
15. eye level control with built in time delay Shuts machine off when ice bin is full to prevent damage to the flaker due to ice backing up into the evaporator L1 L2 L3 Terminals Main power terminals for field wiring electric power to control panel Single phase standard power is wired to L1 and L2 Three phase power is wired to L1 L2 and L3 T1 T2 Motor Pump Terminals Terminals for wiring drive motor and water pump May be factory or field wired Solenoid A1 A2 Terminals Terminals for field wiring liquid solenoid valve wires Heater A1 A2 Terminals terminals for field wiring electric rib heater wires A B Terminals Terminals for providing Line 2 power to solenoid valve On models with condensing units wired through compressor safety switches high discharge pressure and 37 8 Electrical Systems high oil pressure to assure liquid solenoid valve will de energize if the compressor shuts down on a safety failure When connected to a refrigeration rack a wire jumper is placed between line A and line B in the flaker control panel 10 Terminals 1 8 Terminals for field wiring condensing unit indicator lights 11 On Off Switch Terminals Terminals for installing a remote On Off switch or auxiliary control such as a 7 day clock timer or remote modem These auxiliary controls must be wired in series with the panel mounted On Off switch and factory wired photoeye ice level control so that all three switches mu
16. placement or installation of equipment verify the electrical and refrigerant configuration are correct as ordered If any discrepancies are found notify Howe Corporation immediately prior to any installation 4 Installation of the Rapid Freeze Flaker 4 Installation of the Rapid Freeze Flaker 4 Installation of the Rapid Freeze Flaker Installation Conditions Rapid Freeze Ice Flakers are designed to operate in ambient temperatures warmer than 50 F Do not install ice flaker s in refrigerated cold rooms or in areas where the ambient temperature is lower than 50 F 10 C If it is unavoidable ice flakers may be installed in areas down to 45 F 7 C provided that three 3 electric rib heaters available from the factory are installed to heat the bottom casting to prevent ice buildup on the three supporting ribs for the bottom bearing If installed in cold ambient conditions it is advisable to supply the ice flaker with warmer water through a water mixing valve around 60 F 15 C When a combination of cold water and cold air temperature exists the mixing valve and rib heaters must be used Failure to do so will cause the lower water collecting trough and sump to plug up with ice to the extent that the water may overflow into the ice storage bin in addition to blocking the water inlet to the pump Also it is advisable to direct air blowers and fans away from the ice flaker as air velocity over the ice flaker will reduce the effecti
17. the bolts can press against the mounting lugs on the motor making sure the bolts do not thread into the mounting lugs Turn both bolts until they are hand tight and then turn each bolt alternately 1 2 turn at a time until the motor is free enough to remove by hand When installing the new motor place the 4 key on the shaft lightly grease the surface of the motor shaft and insert in the hole on the high speed input shaft keeping the keyway aligned with the key When the motor is in place rotate it until the mounting lugs are aligned with the 4 mounting holes on the motor mounting plate on the speed reducer Insert a bolt in each hole and tighten Re attach the flexible power cable to the motor connect the power leads to terminals check to insure the motor is wired for the correct power 115V or 230V single phase 460V or 380V three phase and for the correct rotation CCW Refer to wiring connections on the motor nameplate for the correct connections 56 11 Service amp Adjustment 5 When the motor is reattached and connected turn on power and check operation Place an ammeter on the power line and check to insure the motor is drawing within the nameplate FLA Replacement of Speed Reducer and Flexible Coupling 1 Turn off amp lock out main power to the ice flaker 2 Remove the drive motor as described above 3 Remove the 4 mounting bolts attaching the gearbox to the top aluminum casting The gearbox can then
18. to Nitrogen canister for pressure testing 6 At Ice Flaker attach low pressure hose normally blue from another refrigeration manifold gauge set two sets required 7 Pressurize system with dry nitrogen at the Condensing Unit to a maximum of 150 PSIG and hold for a minimum of 12 hrs Verify pressure is holding at 150 PSIG at both sets of the refrigeration manifold gauge at Ice Flaker and Condensing Unit 12 4 Installation of the Rapid Freeze Flaker 8 Purge Nitrogen from system and attach vacuum hose normally yellow from refrigeration manifold gauge set to vacuum pump at Condensing Unit Disconnect nitrogen canister from refrigeration manifold gauge and connect it to refrigeration canister 9 Turn Vacuum Pump on and evacuate system until 1500 microns absolute pressure is reached on both sets of refrigeration manifold gauges Break vacuum with introduction of refrigerant to be used in the system until system pressure rises to above 0 PSIG on both sets of refrigeration manifold gauges 10 Repeat procedure in step 8 two additional times until system is evacuated to 500 microns absolute pressure on both sets of refrigeration manifold gauges On third evacuation verify both moisture indicators one at the Condensing Unit and one at the Ice Flaker are green indicating the absence of moisture in the system 11 Break vacuum condition by raising pressure in system with refrigerant to 2 PSIG Remove Vacuum Pump and charge system accord
19. valve on inlet of manifold and accumulated dirt will be flushed out of filter 41 9 Maintenance 8 Close shut off valve on flush hose and open outlet valve on manifold The pressure in the system should now be operational for use Note If pressure does not return to normal zone on gauges reverse the filters and re perform functions 5 through 8 When the pre filter element in the clear pre filter housing becomes discolored this is the indication that it needs to be replaced Lubrication Bearings amp Seals Main bearings on the ice flaker should be greased every three months using FDA approved food grade edible grease The grease fittings are easily accessible from the front of the flaker the top bearing is lubricated through the inspection service opening the bottom bearing is lubricated through the grease fitting on the center hub in the bottom casting NOTE One pump of a grease gun is normally adequate to grease the bearings Do not over grease as this may damage the grease seals at the bearings Rotary Blade bearing lubrication Lubricate the bearings on the rotary blade s 20 ton flaker only using food grade grease HEX HEAD BOLT BLADE CARRIER TOP CAP SEAL BEARING ROTARY BLADE POLYETHYLENE ROD ae SEAL BOTTOM CAP BLADE CARRIER HEX HEAD BOLT GREESE FITTING 42 9 Maintenance Speed reducer The bearing on the top slow speed gear in the speed reducer must
20. valves may appear to overfeed however when properly adjusted they should feed properly In extreme cases of cold ambient and or cold water temperature the next smaller sized expansion valve may need to be installed 1 Pump down the ice flaker and evacuate refrigerant from the liquid line 2 Carefully cut back the insulation on the suction line and remove the remote bulb The bulb is secures to the suction line with two straps Remove the old expansion valve 4 Install the new valve 59 11 Service amp Adjustment 5 Re attach the bulb to the suction line at approximately the 5 o clock position Secure the bulb using two straps 6 Re insulate the suction line 7 Using a high quality vacuum pump evacuate the liquid line to remove any moisture that may have entered the system while the line was open to the atmosphere 8 Restart the ice flaker and adjust the TXV as necessary a Ifice freezes on the surface of the evaporator top to bottom but harvests only on the upper portion with each revolution of the shaft and there are no bubbles in the sight glass then the expansion valve must be opened to feed more refrigerant b If frost accumulates on the compressor body the valve is overfeeding and must be closed 9 To adjust the TXV remove the adjustment stem cover and turn the adjustment stem 1 8 to 1 4 turn at a time clockwise to close the valve if it was overfeeding counterclockwise to open the valve W
21. 48 NMC IOH1NOO OS L 022 TANVd TOULNOD HSH 391 SLOWS Ta binosa NOLLVHOdHOO 3MOH W V3 00L 33 84 4 V3 05 v3 001 3 92 V3 0S 19 0 19 92 L 4 3104 3 92 3 15 S13QOW u3 Vv 1 391 4034 038019 SI LOANNOOSIG WOLON IAYO N3HM 39NVHO SLOVLNOD di LW 9 qasn Si CYO 41 8 ONY M MAINE LON OQ LINN DNISN3GNOO MOHN AV T3 ONILVIOSI NV SI 42 i9 XONILVH3dO SI SNIHOVW IHL N3HM YOLVINDSY SUNSSIUd TWNG ONY IATA AIONTIOS INN ANON AHL S3 MOd THM SIH ONY V STYNINUELL N33AAL38 YAWN FAM V TIVLSNI Lamm NOA W31SAS VINOWAV TVHINSO V OL ME 301 SIHL SNLLOSNNOO NAHM P BATA QIONSTIOS INN qInon SV STVNIWM31 IWYS OL YOLVINOAY 3uinssmid TWNG 3uIM iva va SAMAS ANO SS 391 VINOWAY OL Sariddv HOLVINOTY IYNSSIYA vna e 101 8 Zt S S3ZIS VINOWNY Suayv T4 31OW3U 101 9 Z L L S S3ZIS NOJYA Su3yV14 SLOWS Nouvondav Z 034 qvoni3A0 YOLOW 9 NBSUO NNY H3yIV13 321 SLH N ONLLVOIGNI Z SVH 13Nvd 1 310N NOLLOSNNOO TVNIWN31 O aouao aaomu JQISONI LISIA GVOTu3AO 3AMO TOULNOI 13431 NIN OE L Wwausa NO avaa y UBWLL AVI30 440 YOLOW diind YOLOW ZAO NAY W3v134 301 NIJYO an iva aa FL o zu ou eos 191 QNO VINOWWV 1 xO1vIno34 VA aunssaud vno zv 108 2v 10S 3ATVA gQION31OS ann anon Ls W108 zy wa y ajou 99s dini 8 P epe au m seou ees EXD dWndN V HO dH et ev os ozz vw SOLON dWifid Tv DEA e zna
22. D HOWE Rapid Freeze ICE FLAKERS INSTALLATION amp SERVICE MANUAL and parts catalog Selective Purpose Flake Ice Machines 5 7 5 10 amp 20 ton day capacity e Remote Low Side series RL e Remote High Side Condensing Units RHS TECHNICAL ASSISTANCE LINE 1 773 235 0200 Howe Corporation 1650 North Elston Avenue www howecorp com Chicago IL 60642 1585 e mail howeinfo 9 howecorp com Notice This manual and all information contained herein are provided as is and are subject to change without notice Howe Corporation makes no warranty of any kind with regard to this manual including but not limited to the implied warranties of merchantability and fitness for a particular purpose Howe Corporation shall not be liable for any errors or for incidental or consequential damages in connection with the furnishing performance or use of this manual The information contained herein is applicable to the specified models current at the time of publication Some information in this manual will be of use to owners of older model machines The reader is cautioned that use of this manual with older equipment is at the user s risk Howe Corporation makes no warranty or guarantee explicit or implicit with regard to the use of this manual with equipment models outside the scope of this manual If in doubt of the scope of this manual contact Howe Corporation Howe Corporation 2010 All rights reserved Reproduction adaptation o
23. E FLAKE ICE MACHINE ELECTRIC JUNCTION BOX WOOD BLOCKS 2 EACH CORNER MOBIL EXPRESS ICE BIN Water Supply amp Filter Connections WATER LINE To ensure proper water flow and pressure connect an adequately sized Galvanized or Copper ODS water pipe from the closest convenient water line to within 2 to 4 feet of the ice flaker water sump Install a water line shutoff valve near the ice flaker Use copper tubing between water valve amp water inlet connection located on water sump Refer to the engineering sheet for the line size connection from the ice flaker sump to the water supply line If water supply has silt or sand in it a coarse water filter is recommended Refer to water filter drawing on following page The 5 ton ice flaker uses 2 dual core filter systems the 7 5 ton amp 10 ton ice flakers use 3 dual core filter systems while the 20 ton ice flaker requires the use of 6 dual core filter systems all piped in parallel for proper water filtration requirements 10 4 Installation of the Rapid Freeze Flaker CAUTION MINIMUM WATER PRESSURE OF 20 PSIG IS REQUIRED AT THE ICE FLAKER FOAT VALVE TO INSURE ADEQUATE WATER FLOW MAXIMUM ALLLOWABLE WATER PRESSURE TO THE FLOAT VALVE IS 60 PSIG ET CAUTION Figure 3 Water Supply amp Filter Connections WATER FROU BUILDING SUPPLY U SE d S 1 O TD WATER CISTRIEUTION PAN WATER Le WATER PUUP REGULATING VALVE K O DN ERF LO z FITT
24. EOTA eg 39vd 5 TVNIW331 WOSIA 82 13 Wiring Diagrams Figure 30 Photoeye Ice Level Controls N O Output 28 Wired in series with module on off switch and remote i o Lp Le 240V AC 6 1 76 k 2 4 gt Input O Fo 10 Terminals 10 amp 1 24V AC Output Direct Plug In Banner Replacement Terminal 11 Trigger Delay Timer Step Down Power Supply No Connectior for use with Honeywell MicroSwitch Photo Controls Honeywell Microswitch No Connection Emitter Receiver 83 14 Parts List 14 Appendix C Parts List Number in parentheses indicates quantities if more than one is required 84 14 Parts List Ch HOWE Replacement Parts for Rapid Freeze Ice Flakers Effective January 1 2006 Description Page Table 2 Replacement parts for 5 20 ton ice flakers 86 Table 3 Reduction Ratios For Large Capacity Flaker Speed Reducers 89 Table A Electric Panel Parts 90 Table 5 Miscellaneous Accessories and Parts 91 Ice Flaker Cross Section Figure 31 Models 51 RL 76 1 RL 76 2 RL 101 1 RL 101 2 RL 201 92 2 RL Number in parentheses indicates quantities if more than one is required 85 Table 2 Replacement parts for 5 20 ton ice flakers 14 Parts List 76 1 RL 101 1 RL SERE EE 101 2 RL g Part Description Par
25. EPR evaporator pressure regulator valve must also be installed on the suction line preferably near the ice flaker Also true for properly sized spit systems as well EPR valves are available shipped loose as an option with Howe flakers See Price list for pricing Suction Strainer Howe strongly recommends installing a suction strainer between the ice flaker evaporator amp the EPR valve when connecting to a rack system Suction strainers offer the following benefits protects the compressor from dirt a relief device opens if the filter plugs full flow design for low pressure drop The following suction strainer is recommended for your Rapid Freeze ice flaker 16 4 Installation of the Rapid Freeze Flaker Figure 5 Suction Strainer CLOSED This drawing illustrates the refrigerant flow pattern with the filter in the normally closed position Normal Flow IN rIII This drawing illustrates the N refrigerant flow with the bypass in the open position Bypass Open M Bi directional means the Suction Filter can be installed in either one flow direction or the other it does not mean the Suction Filter is suitable for reversible flow Install the strainer with flow in direction of the arrow on the top of the strainer By pass feature will be operational and pressure port is at outlet Install strainer in horizontal lines only Suction Strainers are available shipped loose as
26. ERSONNEL MUST HAVE KNOWLEDGE OF REFRIGERATION SYSTEMS TO PROPERLY CHARGE THIS FLAKER CAUTION Verify that the thermostatic expansion valve supplied with the ice flaker matches the refrigerant for the refrigeration system or condensing unit Kirk WARNING EE ALL RAPID FREEZE REMOTE MODEL ICE FLAKERS ARE SHIPPED WITH A SMALL HOLDING CHARGE OF DRY NITROGEN SYSTEM MUST BE EVACUATED PRIOR TO CHARGING REFRIGERANT ek WARNING LES Follow accepted practice and procedures to charge refrigerant into the system briefly outlined as follows Consult the rack or condensing unit manufacturer for full details 1 After all piping is completed attach high pressure hose normally red from refrigeration manifold gauge set to Condensing Unit at either Schrader connection to King valve on receiver Schrader connection to filter dryer or Schrader connection to isolation valve on liquid line 2 Attach low pressure hose normally blue from refrigeration manifold gauge set to Schrader connection on compressor s suction service valve 3 Ifeither gauge hose is connected to an isolation valve it is important to make sure the isolation valve is not back seated which will prevent the gauge from taking an accurate reading 4 Fully open all remaining isolation valves to the refrigeration system i e at receiver at compressor at liquid line and at suction line 5 Attach charging hose normally yellow from refrigeration manifold gauge set
27. HE DISCONNECT SWITCH IN THE OFF POSITION to prevent accidental start up 1 Remove the service access cover on the top casting 2 Remove 2 or 3 water distribution tubes for easier access 3 Reaching into the freezing chamber loosen and remove the two bolts holding the existing squeegee and squeegee wrapper in place 4 Remove the squeegee and wrapper assembly through the service opening If the squeegee wrapper is not bent out of shape or pitted with rust then you can remove the rubber squeegee from the wrapper and install a new squeegee in the existing wrapper 5 Reinstall the squeegee and wrapper assembly onto the mounting bracket in the freezing chamber hand tighten the nuts with the squeegee touching the evaporator surface then move the squeegee assembly approximately 1 16 to 1 8 closer to put pressure on the squeegee causing it to bend slightly so that it will drag on the evaporator surface 6 Do not install the squeegee assembly so close to the evaporator that the squeegee bends excessively This may cause premature squeegee wear and increase load on the gearbox and drive motor 7 Tighten the nuts and bolts only till the lock washers lock Do not over tighten bolts as this may cause distortion of the squeegee wrapper and possibly cause premature squeegee wear 8 Re install the water distribution tubes 9 Remove all tools from inside the machine and re attach the service access cover 10 Remove lockout device from the m
28. IHC HU x FLOAT VALVE Cj CRAIN K WATER SUMP FITTING PIPING DIAGRAM FOR WATER FILTER Refrigerant Charging Special Precautions to be Observed When Charging Refrigeration Systems Only technically qualified persons trained and certified in the handling of refrigerant and operation of refrigeration systems should perform the operations described in this manual If a refrigeration system is being charged from refrigerant cylinders disconnect each cylinder when empty or when system is fully charged A gauge should be installed in the charging line to indicate the refrigerant cylinder pressure The cylinder may be considered empty of liquid refrigerant when the gauge pressure is 25 psi or less and there is no frost on the cylinder Close the refrigerant charging valve and cylinder valve before disconnecting the cylinder Loosen the union in the refrigerant line SLOWLY and CAREFULLY to relieve refrigerant pressure in the charging hose ll 4 Installation of the Rapid Freeze Flaker ik WARNING EE NEVER OPEN CHARGING VALVE ALLOWING REFRRIGERANT TO VENT DIRECTLY TO THE ATMOSPHERE REFRIGERANT MUST BE RECLAIMED THROUGH A RECOVERY SYSTEM LII WARNING GT Always store cylinders containing refrigerant in a cool place They should never be exposed to temperatures higher than 125 F 52 C and should be stored and secured in a manor to prevent abnormal mechanical shocks KKK CAUTION EE SERVICE INSTALLATION P
29. ION310S AINON 440 1nHS TUM HOIHM LNN ONISNZONOI ND 9 AVTIH TOHINOO INILVIOSI 40 ONIM ISALYYLSATI ILVNAHIS GAlsMENIS SIHL a YIYNLIVINNYN HOLMS 40 SNOI1OnSLSNI MOTIOS NMOHS LON HOLIMS SSIUd WO 30 LINDI YILVIH wuer ona Og ciO9V 010 dhind W148 dhi 3umiva WOLOW anwa SS34d NO MOT Sud HISIA Hen NANY HOSS3UdWO2 NOILINS MOT SUSHLO AB 03r1ddnS LINN ONISNIONOD ONTYIM MOSSAUdINOD 310 TWOIdAL SY3HLO A8 qarldans NOIL23403d UDO HONVHS a a LOANNOOSIG NIVW 1 i 09181099 ann Zb I 13 Wiring Diagrams Figure 21 Remote Low Side Electrical Schematic 460 3 60 Dual Compressor Condensing Units IOS81NOO 09 L0EC JNNA dH 9 L 09 2 09 INYA dH I 09 09 YAMOd O9 E 09 1 10 9 13101 YO4 13NVd HNH 391 HOSS3HdIWWOO INA VSS 6n0s3 NOLLVHOdMHOO 3MOH Ta bOL 8 b 3LOb 404 NANDI YO Z YOT 3sndsLLn KVN 2v A 009 SdWV z IN qalvu S3SN4 29 SSV10 2 HLIM 39V1d3u ZNA AND YO ug Ti SEET UL KWA Ov A009 SANV LY OLM sasna 29 SSV19 Z HLIM SCH 104 435019 Suv SLIINNOISIG HO1ON dhind MOL INYA N3HM 39NYHO SLOV LNOI dW O 3 dW LA S3n4a3s NI GEM Z 9 SHOSSSMdWOO NOUS SAVI3M ZEUD 2 VEND S310N aunts umvu NMOG did X semia Hosa ssa IO MOT Nouns MoT NT MOSS TON uossauanoo CO Blo 2 NMOG d d Mm uOSS3udWO2 SS3ud HOSIQ HOIH SS3ud uo on NOLINS MOL VON HOSS3HdWOO NOLLO3NNOO WNIWJ3L O 30vao
30. IONS CAREFULLY WARNING CAUTION RISK OF PERSONAL INJURY OR DAMAGE TO EQUIPMENT FOLLOW INSTRUCTIONS CAREFULLY CAUTION 3 Receiving and Inspection of Equipment 3 Receiving and Inspection of Equipment 3 Receiving and Inspection of Equipment Upon receipt of your Rapid Freeze ice flaker you should first inspect the carton very carefully to determine if any damage might have occurred during shipment If you suspect any damage has occurred it should be noted immediately on the freight bill In addition a written notice must be sent to the agent representing the freight carrier The written notice should request an inspection by the agent to verify damage during shipment If the damage was noticed after un crating of the carton it is necessary to keep the original shipping container so that the carrier s agent can investigate the damage claim thoroughly If a repair is necessary for the Rapid Freeze machine you must first obtain written permission from the factory before beginning any repairs Unauthorized work on your Rapid Freeze ice flaker could result in voiding the machine s watranty Remote low side units are shipped with a holding charge of dry nitrogen to insure the evaporator is kept clean and moisture free They must be pumped down and evacuated after they are connected to the condensing unit before the entire system is charged with it s refrigerant charge Immediately upon receipt of equipment before
31. L 2n 2 5 AKA aaa NOILOALOYd azis Alfi9uI2 HONVHS dH e I 3 LOZNNOOSIO NIVA i H H EIE SEDEM OSIMOPZ 0ZZ N o ow 275 ing Diagrams Ut 13 Wi Figure 23 Remote Low Side Electrical Schematic 220 1 50 Dual Compressor Condensing Units Ce el ewe Lan za mu COME A ON SMG AS NMYYG diifid dH8 3APHO dHL 0S L 0ZZ H3MOd 0S L 0v2 022 YOJ 13NVd 1OHLNOO HL 391 HOSS3HdWOO Tvnd TOULNOD 0S LIPZ 8 0S L 0ZZ L 3LOL 09 v2S 1 10083 NOILLVHOdHOO 3MOH V 310L T3qQON IV 391 403 samas NI G3ulIA Z SHOSSSHdWOO WOti3 SAVT3H ZEUI Y LEM S310N NOLLO3NNOO Tel O 390aaai0w34 VY SU su EL EU Di 0 Bund 3urriva NMOG dd OSSIN SS3Ud HOSIQ HEH SS3ud HO MOT NOLLONS MOT MH i Z ON uOSS3HdWOD O O 4 H S S p L QU JUMIYA Aumwva AMoo did Mm YOSSaudNOS SS3Hd H2SIQ HEH SS38d WO MOL nouons MOT FON JOSS3dWOS ALYOHS LON OQ QALI3LOUd ATIVN3M31NI Sav31 AtivQ0NO093S L JAWA ION310S an OD d fid LL CO AYON INS V 3 vides dH L OS LOPZ OZZ qIOHO1 YOLOW INYO WO 0 T AMO LL 4 P N n H H TRES Su3HlO AS AANNdANS NOILOBLOUd E Q LINDUID HINYA E Za LOSNNOOSIC NiVW i OSILIOPZ OZE N o oe 76 iagrams D iring 13 Wi Figure 24 Remote Low Side Electrical Schematic 380 3 50 Standard Cer se ees aon ze did dH L OS L 0ZZ SAIC dH 08 E 0BE HIMOd 09 08 2 ON SMO
32. N OF REFRIGERATION SYSTEMS SHOULD PERFORM THE OPERATIONS DESCRIBED IN THIS MANUAL nee WARNING ES 283 II Service amp Adjustment Replacement of Photoeye Ice Level Controls Gei Wi Sb Zi Turn off the main power and remove the 11 pin power module Locate the sensor to be replaced and remove the sensor housing cover if present Using two open ended wrenches and placing one on the back nut and one on the forward nut remove the sensor Disconnect the sensor from the terminal strip under the relay base Connect the replacement sensor to the terminal strip Connect black wire from receiver only to terminal marked Black Install the sensor in the mounting bracket and tighten the locknuts Re install the power module into the base Turn on main power Check alignment of the sensors When proper alignment is achieved the LED on the receiver will light Adjust the mounting brackets as necessary to ensure that the sensors are properly aligned 10 Reinstall the sensor housing covers Replacement and Adjustment of Ice Deflector To properly install the upper edge of the deflector should be positioned approximately 1 4 BELOW the aluminum lip under the evaporator The ice deflector should be centered beneath the ice cutter blade so that as the ice is removed from the evaporator it will be deflected into the ice bin opening away from the water collecting trough The ice deflector prevents ice from droppi
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34. Pour solution into sump to normal operating level as in 7 above then re circulate sanitizing solution for approximately 20 minutes by turning on drive motor amp water pump 12 Drain solution and rinse thoroughly with fresh water at least twice following procedure described in 9 above 13 After ice flaker is thoroughly rinsed return machine to normal operation by opening water supply valve readjusting off delay timer setting to previous set point restoring refrigeration and turning the machine back to ON Water Filter Back Flushing A unique feature of the Howe water filter system is the cartridge back flush capability The unique omni directional cartridge design permits back flushing of the cartridge in the event of a premature plugging before the 6 month life has occurred In most cases this will not be necessary however when there are large accumulations of sediment and dirt caused by line interruptions construction and heavy rain conditions back flushing will permit the cartridges to be used for their rated life To back flush the cartridges perform the following functions 1 Close shut off valve on outlet of manifold Close shut off valve on inlet of manifold Release bottom manifold from quick disconnect fittings on filters Reverse direction of filters on manifold system Re attach bottom manifold to filters Open flush valve on bottom manifold and put flush hose into bucket or drain AN te wq Open shut off
35. S TIVNIWe 3I 2 3UVd NOLL ATHISIT Ag ava VIINIT NIVI S AR DO FWIL JINGOW FLVLS GIS NUILO3A4Ueld WO 2INUSGIN3S e 3LV3H AFAIZIIS LVLSOWSFHL M31V3H Safe AV 138 I INDOS ADTI3A 4 HILIAS NADAINNG JITE HE JA WA GIONJ IUS NINLIS TID mu SHS SARE Ar SYD IAIM See HOIH 3193103d ATIWWAFHL FAV SYOLOW 119 2 133HS 133HS Or Se Sd y rz STUNINAIL S TVNIHN231 U OL tra OFA 5 Hie D D D 1 ZH0S 8E AU0E2 CAVTIT 3WIL 22 SSV T2 S3Sn3 e34V3H ISVIANGAD H22 SYOLIVINGD EI2 I2 UN3931 l LASS SAND Nei 209 000 ONISIM GTI DNIAla ASOLIVA A INU SHOLINGNOD Sido ISN 80 ring Diagrams i 13 Wi Figure 28 101 RHS amp 201 RHS Condensing Units Control Schematic Page 1 WeU2 3 UH 7 ae SD 3971000017 T Sy ed PE bwa ma U E 133HS OL 6 4 LINDSI3 TU31ND2 T3NVd GACH NU 8 OI WVAIVIC YIMGd NIVW NO HW2DVIQ a3ADd NIVW NU HOOT AIDE D GIUNJUS INIT GIOI T LINISII HIIA TITW NI Q34IA 38 OL 1 y 1 I TINYd JAGH NO V GL 81 ing Diagrams rt i 13 Wi Figure 29 101 RHS amp 201 RHS Condensing Unit Control Schematic Page 2 Mel JACH 3271000020 1 o LINDSTD TWALNGD AOSSIAANDI ss mm e zz c 222 222 e e A um a Jan ss3dd HU zora 390d ct GIUN3 IUS INIT GInOI eg Lat HIA T3T1v evd NI a33IM 38 01
36. ain power disconnect and turn on the main power 11 Turn on the ice flaker switch you may need to press the overload reset button and check the squeegee to insure that it touches the evaporator on the entire circumference of the freezing chamber 12 If the squeegee looses contact with the evaporator surface at any point then shut down the machine repeating the above steps to readjust the squeegee a little closer Replacement and Adjustment of Water Distribution tubes Adjust lead tube bottom spout with 90N Elbow so that the water is dispersed over the evaporator and it doesn t splash water over the ice deflector If it is adjusted too far forward the water may cascade down onto the ice deflector and dribble onto the ice in the storage bin If water is running onto the ice deflector turn the lead tube away from the ice blade so water does not run onto the ice deflector 55 11 Service amp Adjustment The side spouts are positioned so the ends of the tubes are approximately 3 away from the surface along the top edge of the evaporator pointed slightly down towards away from the distribution pan Ensure that the water level is at least 1 2 full in the distribution pan but not overflowing the top Inadequate water level may cause water to dribble out of the distribution tube s down onto the ice in the bin amp not on the evaporator Replacement of Water Pump 1 2 3 4 zn Turn off amp lock out the mai
37. aioMz Y 301S0Ni 135384 OVOTH3AO 7 Wasanii QVOTM3AO INYA SuaH10 A8 Qariddns NOIL9310Hd LINDY HINYA LOANNOOSIC NIV 09 09r pr 74 Figure 22 Remote Low Side Electrical Schematic 220 1 50 Standard 13 Wiring Diagrams L TEL ON SMG A8 NMYHO ONIMIM HOSS3HdWOO 7JOHLNOO 08 1192 0S L 0ZZ 33S CUD ONLLIBNNOI NAHM OD 3AONW39 2 SYOLON dWNd 9 INYA 0S L 0ZZ Y3MOd 08 1 0P2 022 Gus icd DNI EE SUE siae UJ T NYd 1OHLNOO HVH 391 GANIVLNOO NIS 0S VOS 0r10Z3 NOILVHOd HOO GIAOH NOLLOSNNOO Tea O NAY VS 39 3930310438 Y W NORD HOLON SNLVIS YOSSTUdNOD MOLINON OL T3NVd MEIH 391 NO SLHON ONLLVOIGN 40 SNINIA Z N3dO 3uv JUNSSTYd NIO HO FUNSSIUG HOIH S3HILIMS A134VS HOSS3HdWOO di 3ATVA OION310S AINON 440 ANHS TIMHOIHM INN 9NISN3QNOO NI E89 ANER TOULNOD ONLLVTOSI 4O ONIHIM IL SBLVULSNTH 2L VW3HOS OINAS SIHL 1YOHS LON OQ 03193LOUd ATIVNHALNI Sav31 AUVANOI3S Matan LOV AnNVW HOLIMS 30 SNOLLOmiLSNI MOTIO4 NMOHS LON HOLIMS Saud NIR Tam WO 40 UNIAO 3 1v3H 1 H M3iHVIS TOULNOI H OULNOD TOULNOD WOSS3MdWOO Saud MOT KENG SS3ud H IH i EE Tay Si CAES Mai See 1 N h 3AVA 010N310S an anon ou m pue A w EA 38mtv4 Venedeg NMOG diiid Ssa iio MO SSFUd HISIA HOM MI MOSS3HdNOO NOILONS MOT vu sun ses YOLOW dd SUIHLO A8 G3ir1ddnS LINN ONISNIGNOD ONTHIM HOSSSHdWOS 3LOWAN TVOIdAL anna it db 22 ASON 10
38. ait 5 10 minutes between each adjustment to allow the system to stabilize Repeat this step until ice is produced and harvested from the top all the way to the bottom of the evaporator If a ring of ice is left on the bottom of the evaporator or in the middle for a 7 1 2 or 10 ton flaker then the expansion valve is underfeeding and must be opened accordingly top expansion valve for a ring of ice in the middle of the evaporator bottom expansion valve for a ring of ice at the bottom of the evaporator Note balanced port expansion valves are more sensitive than standard TXVs so adjustment of the stem should be limited to 1 8 turn at a time Non Balanced port TXV s are standard equipment for split systems Balanced port TXV s are more difficult to adjust properly and require more time SPECIAL NOTE SINGLE CIRCUIT SYSTEMS WITH TWO EVAPORATOR CIRCUITS MODEL 76 1 101 1 HAVE DUAL EXPANSION VALVES AND ARE DIFFICULT amp TIME COMSUMING TO ADJUST CLOSE BOTH VALVES THEN OPEN BOTH EQUALLY TO TURN EACH UNTIL ICE IS MADE AND HARVESTED ON THE ENTIRE LENGTH OF THE EVAPORATOR WAIT 5 10 MINUTES BETWEEN EACH ADJUSTMENT SPECIAL NOTE 60 11 Service amp Adjustment Improperly adjusted TXV Use one gauge for each circuit Properly adjusted TXV Adjusting TXV valves on dual circuit evaporators with common refrigeration circuit 76 1 RL amp 101 1 RL Use two refrigeration gauge manifol
39. an option with Howe flakers See Price list for pricing Line Insulation After the final leak test refrigerant lines should be insulated to reduce heat pick up and prevent the formation of flash gas in the liquid lines Suction lines should insulated with 24 wall Armstrong Armaflex or equal Liquid lines should be insulated with 1 2 wall insulation or better Insulation located in outdoor environments should be protected from UV exposure to prevent deterioration of the insulation be e 4 Installation of the Rapid Freeze Flaker 5 Installation of the Condensing Unit 5 Installation of the Condensing Unit 5 Installation of the Condensing Unit After inspecting for damage locate and install condensing unit in a location accessible for service Rigging holes have been provided on all condensing units Caution should be exercised when moving these units To prevent damage to the unit housing during rigging cables and chains used must be held apart by spacer bars The mounting platform or base should be level and located so as to permit free access of supply air Ground Mounting A concrete slab raised six inches above ground level provides a suitable base Raising the base above ground level provides some protection from ground water and wind blown matter Before tightening mounting bolts recheck level of unit The unit should in all cases be located with a clear space in all directions that is at a minimum equal to the
40. ar Check the suction pressure at the ice machine connect a low pressure gauge to the charging valve located on the suction line at the rear of the ice flaker Suction temperature must be maintained at 5 F and 10 F at all times If suction temperature is between 5 F and 10 F Adjust the expansion valve Remove the adjustment stem cover and turn the adjustment stem 1 8 to 1 4 turn at a time counterclockwise to open the valve if the evaporator was not freezing ice on its entire length Wait 10 15 minutes between each adjustment to allow the valve and machine balance out Repeat this step until ice is produced and harvested all the way down to the bottom of the evaporator For 7 1 2 amp 10 ton Single circuit flakers adjust both TXV valves equally 7 1 2 amp 10 ton flakers all have two circuit evaporators however they may be headered into a single refrigeration circuit When the ice maker is adjusted and operating properly turn ON OFF switch OFF and verify that the solenoid valve closes the valve will click loudly Verify that the off delay is set correctly After the ice flaker is turned OFF the drive motor and water pump will continue to operate for a period of time This ensures that when the drive motor and water pump stop the evaporator will be free of ice If necessary adjust the off delay see page 38 for location Turn the ON OFF switch ON Verify operation of the photoeye level controls Block the path of the
41. be lubricated greased every six months with standard bearing grease not food grade The oil in a new speed reducer should be changed at the end of 250 hours of operation Under normal conditions after the initial oil change the oil should be changed after every 2 500 hours or every six months whichever occurs first Periodic examination of oil samples taken from the unit will help establish the appropriate interval When operating the ice flaker in low ambient temperatures colder than 50 F synthetic oil should be used in the speed reducer Preventative Maintenance The ice flaker should be visually checked daily by a designated employee This inspection should ensure that e Bin doors are working closing properly e Bin doors are kept closed e Photo eyes and brackets are in proper alignment e Ice quality size of ice flakes appears normal e Ice quantity appears normal e No bubbles are visible in the sight glass e The flaker is clean e No unusual noises are present When these items are checked on a daily basis any change will be easily detected prior to any service call for a malfunction of the machine Figure 14 Preventative Maintenance Schedule 3 6 9 12 months months months months Clean ice machine Check ice harvesting Clean electric eyes amp check alignment Inspect flaker for damaged parts Inspect squeegee Inspect water float valve Inspect deflector scraper
42. cient accuracy to distinguish temperature difference upon contact with the ice Use of a bin thermostat for level control will void the product warranty 29 6 Accessories Rib Heating Elements Rapid Freeze ice flakers are designed to operate in ambient temperatures between 50 F 10 C and 100 F 38 C When operating in ambient temperatures between 50 F 10 C and 45 F 7 C rib heaters must be installed on the ice flaker Under no circumstances is the machine to be allowed to operate in ambient conditions below 45 F 7 C Factory installed rib heaters are available on all sizes and configurations when ordered with the ice machine These heaters are installed in the three ribs on the bottom casting inside the evaporator section of the ice flaker These heaters warm the ribs and water return trough to prevent the accumulation of ice inside the evaporator Large capacity 10 000 40 000 Ib day ice flakers can be retrofitted with rib heaters even if they were not installed at the factory Retrofit kits are available from Howe and come with all necessary parts and instructions to install rib heaters in the field 30 7 Start amp Adjust 7 Start amp Adjust 7 Start amp Adjust Once installation has been completed the ice flaker has been properly evacuated and charged with the Freon identified on the ice flaker label you may proceed with the check and adjust section Checklist 1 Before power is turned
43. ck timer to limit the ice flaker production Problem 10 Troubleshooting Possible Cause Remedy Water level in the sump is too high causing water to overflow the return trough Adjust the water float valve to maintain water level approximately 14 below the return trough Water is overflowing the distribution pan One or more water distribution tubes is missing or broken The lead water tube may be splashing water into the bin e Distribution tubes may be plugged Clean or replace tubes as necessary e Level in distribution pan may be too high Adjust the water regulating valve to set level in the distribution pan to half full Replace as necessary Adjust lead water tube as necessary Condensate drip pan is leaking into the storage bin Repair or replace drip pan Humidity level in storage bin is too high e Check and repair bin insulation as necessary e Check and repair seals on the bin e Bin door has been left open too long Close door when not removing ice 2 Ice in storage bin is too Water level in the Adjust the water float valve to maintain water wet sump is too high level approximately 44 below the return causing water to trough overflow the return trough Water is overflowing e Distribution tubes may be plugged Clean the distribution pan or replace tubes as necessary e Level in distribution pan may be t
44. d pockets in the bin top for placement of the photoeye elements If pockets are not present mount the emitter securely to the top or side wall of the bin and align the receiver so 28 6 Accessories that it is directly across the ice drop opening from the emitter DO NOT permanently affix the receiver Leave enough adjustment to ensure proper alignment with the emitter 5 Run the long cables through one of the knockouts furnished on the side of the control panel and connect the wire form the cables to the terminal strip The Blue wires from both the emitter amp receiver should be connected to the Blue terminal the Brown wires from both the emitter amp receiver should be connected to the terminal marked Brown and the black wire from the receiver only should be connected to the terminal marked black The black wire from the emitter should be insulated taped or wire nutted to prevent accidental contact to live terminals 6 NOTE If a wire jumper is installed between terminals 5 amp 6 on relay mounting base it must be removed for the photoeye control to operate properly 7 Plug the control module into the base 8 Check to ensure that the control panel ON OFF switch is in the Off position Turn on the main power disconnect 9 Align the photoeye receiver This alignment is critical to the proper operation of the level controls a Check the LED on the emitter With the disconnect switch ON the red LED on the emitter sh
45. ds Connect the low pressure hose from the gauge manifold to the Schraeder connection on the suction line outlet for each circuit Pressures should be equal if not it is an indication the TXV valves may not be adjusted balanced properly We don t use SUPERHEAT settings for adjusting the TXV valves on the ice flaker Howe Flake Ice Equipment s Thermal Expansion Valve s TX V must be adjusted visually by sight to assure optimum ice quality and ice harvesting Superheat settings are not a reliable method of adjusting TX V on Howe Flaker Please note how ice appears in photo above for a properly adjusted TXV An even layer of ice should form completely from top to bottom of the evaporator circuit s models 76 101 amp 201 evaporators have 2 circuits If ice on the lower 1 to 4 of the evaporator circuit s looks different than the ice above it this normally indicates the TXV is underfeeding and requires opening If one circuit appears to be underfeeding ice is shinny or blade does not remove the ice nearest the bottom of the circuit and the other circuit appears to be fine Then CLOSE the TVX slightly on the Good circuit until it also indicates underfeeding This is to ensure the TXV is not OVERFEEDING Let the valves balance out Now adjust the TX V for the circuit that is underfeeding the most so that both circuits appear to be feeding equally At that point adjust both TXV valves EQUALLY simultaneously 1 8
46. e as necessary Condensing unit is undersized Replace with a properly sized condensing unit 8 Ice flakes are too small with an excessive amount of snow Evaporator temperature is too low e Check and adjust EPR valve if equipped EPR should be set between 5 F and 10 F e Open the TXV 1 2 turn at a time until ice quality is acceptable Wait 10 15 minutes between adjustments to allow the system to balance 9 Ice flaker chatters and does not run smoothly Ice blade clearance is too high Main bearings are Worn Check clearance and adjust as necessary Replace worn bearings Repair or replace main shaft bearing sleeve if excessive wear is detected 10 Ice accumulates in the water return trough Ice deflector is not positioned properly Adjust ice deflector position as specified on page 54 11 Ice accumulates in the water return trough sump and on the ribs in the bottom casting Ambient temperature is too low e If ambient temperature is between 45 F and 50 F install rib heaters e If ambient temperature is below 45 F relocate the flaker to a warmer area See Installation conditions on page 8 Ice Storage and Removal 1 Ice flakes are frozen together in a hard block Ice has been left in the storage bin too long 49 e Remove ice from the storage bin daily e Install a clo
47. e coupling in place for now this will help keep the main shaft from dropping when the bottom bearing is removed 4 The bottom bearing retainer and bottom bearing cover are attached to the bottom casting with 4 bolts Remove the 4 bolts from the cover and retainer Once the bearing cover is removed you will see the bottom bearing retainer and the end of the shaft There are two threaded holes in the retainer Install two of the removed bolts into these threaded holes turning each one an equal amount to jack the retainer out of its normal position in the bottom casting 5 After the retainer has been removed press the old bearing out of the aluminum retainer 6 There is a stainless steel shaft sleeve between the shaft and the bearing The shaft sleeve will probably come off the shaft with the bearing and retainer If it did not then remove the sleeve from the shaft it is kept in place by a key way there is not setscrew It will slide freely but rotate with the shaft 7 Examine shaft journals for wear If worn repair or replace shaft 8 Press the new bearing into place centering it in the retainer 9 Press the new oil seals in place The auxiliary seal is placed inside the main seal 10 Place the new shaft sleeve on the shaft and install the bearing retainer with new bearing and oil seals in place and bottom bearing cover Align the bolt holes with the threaded holes in the casting and re install the 4 mounting bolts taki
48. e freezing surface and all water passages Operate until all scale is removed This may require from half hour up to 2 hours if scale build up is heavy 9 When system is clean drain cleaning solution and rinse with 2 or more complete rinses to insure that cleaning solution is flushed away thoroughly At each rinse fill sump with fresh water and run drive motor and water pump for 10 minutes then drain 40 9 Maintenance Water Distribution Tubes Water distribution tubes should be kept clean and free of any mineral buildup When they do accumulate mineral deposits the flaker must be thoroughly cleaned Remove each tube and clean with cleaning solution and small tubing brush Carefully inspect each distribution tube and fitting for leaks or cracks Replace defective tubes when necessary Water Sump Water sump and pump should be kept clean and free of any mineral buildup When mineral deposits accumulate the machine must be thoroughly cleaned The water sump will be cleaned when you normally clean the equipment by circulating the ice machine cleaner through the water system In extreme cases of mineral or slime buildup shut off the main power and remove the top covers from the sump and using the ice machine cleaner and a scrub brush clean the aluminum sump body until the deposits are removed TO SANITIZE 10 Mix a solution of approved sanitizer or mix 16 oz of household bleach with 2 gallons of warm water 90 115 F 11
49. earance is not within these parameters contact factory for guidance 44 10 Troubleshooting 10 Troubleshooting 10 Troubleshooting Problem Possible Cause Remedy Operation 1 Ice flaker will not start ON OF switch is open Turn all power switches ON Control transformer is defective Control switches are open Check voltage between terminals 1 and 2 on the flaker control module part E20T48 Normal reading is 24 VAC If 24VAC is not present replace the transformer Check voltage between terminals 1 and 3 on the flaker control module With all control switches open normal reading is 0 VAC With all control switches closed normal reading is 24 VAC Photoeye emitter is defective Check LED on emitter If LED is lit emitter is functioning properly If LED is not lit check to see that power is turned on and that all connections between the emitter and control panel are secure If LED still is not lit replace emitter Photoeye receiver is defective Check LED on receiver If LED is lit receiver is functioning properly If LED is not lit check to see that power is turned on and that all connections between the emitter and control panel are secure Check alignment of sensors If possible remove sensors form their housings and hold them a few inches apart If LED still is not lit replace receiver Photoeye control module is
50. ect expansion evaporator The carbon steel construction provides exceptional heat transfer properties while the hard chrome lining provides a clean sanitary corrosion resistant freezing surface Ice Blade An investment cast stainless steel ice blade removes the ice from the freezing surface The material and method of fabrication mean that the blade will never need re sharpening Squeegee Made of USDA approved material the squeegee removes excess water from the surface of the ice guaranteeing that the ice produced by the flaker is dry and sub cooled Ice Deflector Mounted underneath the ice blade the deflector directs the harvested ice toward the center of the drop zone Water Distribution Pan The water distribution pan and tubes provide a continuous flow of water over the evaporator surface Ice production is rapid and continuous with no interruption in production Water Sump Collects water that was not frozen on the evaporator and re circulates it to the water distribution pan The incoming water supply is connected here through a float valve that maintains a constant water level in the sump Bearings Oversized bronze bearings ensure a long service life Control Panel The brains of the ice flaker the control panel governs all of the functions of the ice flaker Available in a NEMA4 weatherproof enclosure for harsh environments or frequent washdown applications Drive Motor Open drip proof drive motor Totally
51. enclosed fan cooled motor available for harsh environments or frequent washdown applications 2 Introduction Figure 1 Howe Rapid Freeze Ice Flaker Major Components Drive Motor Speed Reducer ch Jee Water Distribution Pan Squeegee Main Shaft Evaporator Ice Blade Control Panel Water Regulating Valve Water Pump Water Sump Ice Deflector Bearing Bottom 2 Introduction Important Safety Information The information found in this manual is intended for use by individuals possessing adequate backgrounds of electrical refrigeration and mechanical experience Any attempt to repair or make alterations to this equipment may result in personal injury or property damage The manufacturer or seller cannot be responsible for the interpretation of this information nor can it assume any liability in connection with its use Safety Symbols and What They Mean Please read and understand this manual prior to installing or operating this Rapid Freeze ice flaker You must be completely familiar with the start up operation and service of this flaker before you attempt to start operate or adjust this piece of equipment The following safety symbols will alert you to any special precautions throughout this manual DANGER BEWARE OF HAZARDS THAT CAN RESULT IN PERSONAL INJURY DANGER WARNING DO IT RIGHT OR RISK SEVERE PERSONAL INJURY FOLLOW INSTRUCT
52. equired 90 14 Parts List Replacement Neon Indicating Lights Green 230VAC LGX 2 Amber 230VAC LAN 2 Red 230VAC LRN 2 Green 24VAC LGX 24 Amber 24VAC LAN 24 Parts for E20T73 Photoeye Level Controls Power module relay E20T68 Sensor emitter with 15 lead no plug E20T104 15NP Sensor receiver with 15 lead no plug E20T105 15NP 11 pin socket base for photoeye power module 5V013 Photoeye sensor mounting brackets pair E10U44 Table 5 Miscellaneous Accessories and Parts Part Description Part Number USDA approved bearing grease E20K6 Speed reducer oil natural 1 Quart SR OIL Speed reducer oil synthetic 1 Quart SR OIL SYN Replacement 20 micron water filter cartridge with Quick Connect fittings E10H43 Replacement 20 water filter pre filter core E10H46 Replacement 20 water filter pre filter housing cover blue E10H45 Replacement Water filter core E10H57 Ice machine cleaner E10V1 Number in parentheses indicates quantities if more than one is required 91 14 Parts List Figure 31 Ice Flaker Cross Section Models 51 RL 76 1 RL 76 2 RL 101 1 RL 101 2 RL 201 2 RL 12 Number in parentheses indicates quantities if more than one is required 92
53. es connected there is no power going through contact to harm the ohm meter 4 Drive motor is always on a ON OFF switch is defective Replace ON OFF switch b Photoeye controls are defective Check per 1 d 1 f above 5 Solenoid valve is always energized a Control module is defective Replace control module 6 Ice maker does not shut off when bin is full a Photoeyes are not installed Install photoeyes per instructions on page 28 Photoeyes are defective Check per 1 d 1 f above 7 Drive motor cuts out on overload a A speed reducer gear is worn or broken Repair or replace the speed reducer Electronic overload is set too low Check amp draw on drive motor If amps do not exceed the nameplate rating adjust the potentiometer on the control module clockwise until flaker operates properly Turn potentiometer counter clockwise just to the point that the overload trips then turn potentiometer clockwise 1 8 turn e Thermal overloads may be improperly sized Check ratings and install properly sized overloads if necessary Ice blade is dragging on the drum Readjust the clearance on the ice blade as specified on page 62 8 Drive motor runs but main shaft only turns when there is no ice on the drum Freezing and Refrigeration 1 Ice freezes along entire length of drum but a a The woodr
54. for R 404A 16 PSIG for R 22 The differential setting cut out left adjustment stem should be set at 18 PSIG for R 404A 11 PSIG for R 22 DIFF TAN CUT OUT IS CUT IN a FERENTIAL CLOSES ON RISE DFPRESSURE puc IMPORTANT NOTICE DO NOT ATTEMT TO ADJUST ICE FLAKER SPLIT SYSTEM FOR EVAPORATOR SUPERHEAT REFER TO START amp ADJUST SECTION OF THIS MANUAL FOR PROPER ADJUSTMENT OF EPR AND TXV VALVE ON ALL HOWE ICE FLAKERS IMPORTANT NOTICE 34 8 Electrical Systems 8 Electrical Systems 8 Electrical Systems Control Panel Layout Figure 11 Figure 12 E20T40 RL Exterior Panel Layout E20T40 SCA Exterior Panel Layout Remote Low Side Ice Flakers Ice Flakers with Condensing Units 2 ICE PLAKER COMPRESSOR ICE FLAKER Jas nanus P compressor RUN ILU Queenan p po P Low on PRESSURE CD motor overtoap d X FAILURE PUSH TO RESET z e HIGH DISCH PRESS f Low suction press d FAILURE PUMP DOWN 1 On Off Switch Main On Off switch for the control circuit This switch is wired in series with the optional field installed switch and the photoeye ice level control 2 Ice Flaker Run Light Green light is on whenever the contactor and drive motor are energized 3 Motor Overload Light Amber light is on whenever the electronic overload opens stopping the drive motor and water pump 4 Overload Reset Button Normally open reset button resets overload circuit following
55. head pressure control system The system employs an ORI open on rise of inlet pressure valve and an ORD open on rise of differential pressure valve The high pressure discharge gas is introduced above the liquid in the receiver tank The receiver discharge is regulated by the ORI valve The discharge pressure of the ORI valve must be adjusted to regulate the unit for proper operating conditions Adjust the ORI valve shown on the following diagram to maintain a discharge pressure of 220 PSIG To set ORI valve turn on all fans head pressure will go down to approximately 180 PSI or so then raise ORI valve set point until head pressure reaches about 220 PSI This will increase velocity amp cause less fan cycling Once adjusted return the fan controls to their normal settings see page 25 Special NOTE The ORI valve should be adjusted for winter conditions If installed amp adjusted during summer months you may need to return during the winter to re adjust the setting This is because during winter the valve will hold liquid in the condenser to maintain head pressure Figure 14 Dual Valve Piping Arrangement Condenser HR 26 6 Accessories 6 Accessories 6 Accessories Electric Eye Ice Level Control The use of a suitable ice level control to shut off the ice flaker when the storage bin fills is mandatory Failure to use the proper ice level control will cause the ice to build within the ice flaker evaporato
56. height of the unit above the mounting surface A condensing unit mounted in a corner formed by two walls may result in discharge air recirculation with resulting loss of capacity Roof Mounting Due to the weight of the units a structural analysis by a qualified engineer may be required before mounting Roof mounted units should be installed level on steel channels or an I beam frame capable of supporting the weight of the unit Vibration absorbing pads or springs should be installed between the condensing unit legs or frame and the roof mounting assembly Access Provide adequate space at the compressor end of the unit for servicing Provide adequate space on the connection side to permit service of components Spring Mounted Compressor Compressors are secured to make sure there is no transit damage Before operating the unit it is necessary to follow these steps Remove upper nuts amp washers b Discard the shipping spacers c Install the neoprene spacers spacers are located in the electrical panel or tied to compressor d Replace the upper mounting nuts and washers Allow 1 16 space between the mounting nut washer and the neoprene spacer Rigid Mounted Compressor Some condensing units use rigid mounted compressors Check the compressor mounting bolts to insure they have not vibrated loose during shipment 20 5 Installation of the Condensing Unit Figure 6 Compressor Mounting Spring Mount Solid Mount for Mobile o
57. ice E D 1a OPENING TO ICE BIN u ff P TRAP TEM SOLENOIDO I Liduto WeaLWE VALVE InnIEA DD EH jM e unting Holes Use 12 Screws D pees Tv i a Moounitng H oles i ae EE m WATER PUHP u aare SUMP Connection Sizes Refrigeration DIMENSIONS SE INCHES Suction Liquid DaT 70 F water Model Supply temp C D E H I J W ODS ODS OD BTU HR 51 RL 30 52 31 58 35 16 53 2 7 8 L 85 250 76 RL 30 52 43 70 47 164 57 2 1 8 7 8 L 128 000 101 RL 30 52 51 77 55 164 57 2 5 8 1 1 8 L 170 500 201 RL 48 73 69 100 75 2218 72 2 2 5 8 2 1 1 8 1 2 346 500 Model 201 RL ice flaker is to be run at 10 F Evaporator temperature 66 12 Ice Flaker and Condensing Unit Drawings Figure 17 Condensing Unit Dimensions Ee ei END VIEW DIMENSIONS mmH EEE 888 epp H 1 wi a rh mw 1137 ZI pta i Kn 1 Hts ROP uu CM ere CIL B eem sa E 3 00 Dia 00 tu WOLE 8 07 A Condensing Unit Information Model DIMENSIONS Connection Sizes Shipping No A B C Suction Liquid Weight INCHES OD OD Pounds 51 RHS 144 44 5 56 0 2 1 8 7 8 1800 ed 76 RHS 170 44 5 56 0 2 1 8 7 8 1965 Ge 101 RHS 144 87 07 56 0 2 5 8 1 1 8 3600 201
58. ines Limit the soldering paste or flux to the minimum required to prevent contamination of the solder joint internally Flux only the male portion of the connection never the female After brazing remove the excess flux Figure 4 Refrigerant Piping Support Ensure that refrigerant lines are supported and fastened properly See Figure 4 for an example Straight runs of tubing should be supported in at least two locations near each end of the run Long runs may require additional support In general 3 8 to 7 8 lines should be supported every 5 feet 1 1 8 and 1 3 8 lines every 7 feet and 1 5 8 and 2 1 8 lines every 9 10 feet When changing directions in a run of tubing no corner should be left unsupported Supports should be placed a maximum of 2 feet in each direction from the corner Piping attached to a vibrating object such as a compressor or compressor base must be supported in such a manner that will not restrict the movement of the vibrating object Rigid mounting will fatigue the copper tubing zfs 4 Installation of the Rapid Freeze Flaker 5 Donot use short radius ells Short radius elbows have points of excessive stress concentration and are subject to breakage at these points 6 Thoroughly inspect all piping after the equipment is in operation and add supports wherever line vibration is significant Extra supports are relatively inexpensive as compared to refrigerant loss Liquid Line Fo
59. infrared beam After a built in 15 second delay the shutdown cycle will begin If the ice flaker does not begin shutdown adjust the photoeyes per instructions of page 28 Unblock the photoeye beam and verify that the ice flaker re starts immediately Adjust the electronic overload setting see page 38 for location Slowly turn the overload setting counterclockwise just to the point that the flaker shuts down on overload Turn the overload adjustment LA turn clockwise reset the overload device and re start the flaker This will insure that the drive motor is adequately protected but will not cause nuisance shutdowns Verify that the ice flaker is adjusted and producing dry flake of ice Verify that water is NOT dripping into the bin If it is locate the dripping point and correct it 1 e distribution pan overflowing water recovery trough overflowing or distribution tubes broken or misaligned 33 7 Start amp Adjust ADJUST LOW PRESSURE SWITCH split systems All Rapid Freeze Remote Condensing units have a Low a pressure Operating pump down switch This low pressure switch needs to be set at 3 5 PSIG cut out R 22 or R 404A to cut out the compressor when the suction pressure reaches this setting To Adjust the Low Pressure switch turn the adjustment stem clockwise to raise the cut in setting counterclockwise to t lower the cut in setting The cut in right adjustment stem setting should be set at 23 PSIG
60. ing to information supplied in Condensing Unit Quick Step Guide with Ice Flaker and in Howe Service Manual Wiring amp Electrical Connections CAUTION ELECTRICAL WIRING SHOULD BE PERFORMED BY QUALIFIED TECHNICIANS FOLLOWING ALL APPLICALBLE ELECTRICAL CODES CAUTION The electrical control panel is supplied with large capacity remote low side RL machines but is shipped loose to be mounted on the wall near the bin for easy access to controls To install control panel 1 Install disconnect not supplied by factory and connect main power to terminals marked L1 L2 and L3 L3 only on three phase panels in the ice flaker control panel 2 Install optional on off switch to the two terminals designated On Off switch Remove wire jumper on these terminals if you are installing a remote switch 3 A jumper is installed between terminal marked Line A and terminal marked Line B This will enable the liquid line solenoid on the ice flaker to operate properly If a Howe condensing unit has been supplied with the ice flaker remove this jumper and connect condensing unit control wiring as directed 4 Following all applicable electric codes wire the remote panel to the component junction box drive motor 1 amp 2 water pump 3 amp 4 and solenoid valve 5 amp 6 on the flaker The drive motor and water pump should be wired to terminals T T and T respectively in the control panel The solenoid valve is w
61. ion for a while to verify the water level If the water level is still not where it should be re adjust the float Replacement of Solenoid Valve e CAUTION EE ON ICE FLAKERS THAT ARE CONNECTED TO A CENTRAL REFRIGERATION RACK A JUMPER WIRE MUST BE PLACED BETWEEN TERMINAL A AND TERMINAL B ON THE TERMINAL STRIP AT THE BOTTOM OF THE CONTROL PANEL THIS JUMPER WILL ALLOW THE SOLENOID VALVE TO ENERGIZE WHEN THE OPERATING CIRCUIT IS ENERGIZED CA UTION 1 Pump down the ice flaker and evacuate refrigerant from the liquid line 2 Turn off main power to ice flaker and disconnect wires leads from the solenoid valve and remove the armored cable Cut out or de solder the solenoid valve from the liquid line and remove the old valve 4 Install and solder the new valve into the liquid line Using a high quality vacuum pump evacuate the liquid line to remove any moisture that may have entered the system while the line was open to the atmosphere 6 Re connect armored cable and solenoid wires 7 Turn on main power turn on ice flaker switch and check operation of the solenoid valve ek CAUTION ES THE ARROW MARKED ON THE SOLENOID VALVE MUST POINT IN THE DIRECTION OF REFRIGERANT FLOW TOWARD THE ICE FLAKER ek CAUTION EE Replacement and Adjustment of the Expansion Valve TX V Note When the ice flaker is in a cold ambient location and or the machine is supplied with cold water the standard TX V
62. ired to terminals marked solenoid valve in the flaker control panel 5 Ifthe flaker has factory installed supplied photo eye ice level controls connect the cables from the ice flaker to the terminals below the relay base in the control panel The wires are color coded and must be connected to the proper terminals The BLUE leads from both the emitter and receiver cables connect to terminal marked BLUE the BLACK adds 4 Installation of the Rapid Freeze Flaker lead from the receiver only is connected to terminal marked BLACK the Black wire from the emitter is to be insulated taped NOT connected to anything and the BROWN leads for both the emitter amp receiver connect to terminal marked BROWN LII WARNING k THE SENSOR LEADS FOR THE ICE LEVEL CONTROLS MUST NOT BE RUN IN THE SAME CONDUIT AS THE MOTOR AND SOLENOID WIRES SENSOR WIRES MUST BE RUN IN SEPARATE CONDUIT KKK WARNING EE Piping Connections When installing the ice flaker it is important that the flaker is properly piped as indicated below When connecting to a dedicated oversized condensing unit or refrigeration rack system an EPR valve must also be provided and installed to regulate the evaporator suction temperature to between 5 F and 10 F 20 4 C to 23 2 C Table 1 Piping Connection Sizes E CONNECTION CONNECTION ET heo swMer 12 op SE e Com op 3 MPT EE 7 OD 2 2 MPT 2 2 1 8 OD E 7 8 OD
63. m of the blade s rotate the blade 60 degrees and check clearance again Repeat this operation at a minimum of six points around the evaporator to accurately determine the point of least clearance 2 With the ice blade rotated to the point of least clearance set the gap between the ice blade and evaporator surface to between 0 004 and 0 006 at the top and bottom of the blade Tighten the blade mounting bolts and re check clearance Rotary Blade Bearing replacement 20 ton models only 1 Remove blade assembly from machine by the top and bottom 5 8 bolts Remove bearing caps and seals from both the top and bottom Note the caps are different and should not be mixed up 3 If needed clean bearing caps of any deposits using a wire brush or Scotch pad 4 Pull press out the bearings You may have to make your own tool to do this One method that works is to use a 1 1 4 diameter WOODEN dowel not metal to drive the bearings out against the inner plastic filler rod 5 Ifthe plastic filler rod mushrooms on the ends make sure to trim the O D of the plastic down to the proper diameter This is important to clear the I D of the blade to allow grease to pass through from the bottom bearing to the top 6 Clean out old grease from the blade and repack with fresh grease Use food grade grease Pack the new bearings with fresh grease before installing 8 Press new bearings in place They are the same for top and bottom Press agai
64. n power to the flaker Remove the screws securing the stationary sump cover Loosen and remove water tube fitting Nylon compression fitting Remove the cover from the electric motor and disconnect the water pump wires from the terminal strip Lift the water pump with cover attached off the sump Remove the water tube hose and clamp Loosen and remove the four nuts holding the water pump onto the sump cover Remove the pump from the cover To install the new pump simply reverse the above procedure Use caution when routing the new cables to insure they are secured to avoid accidental damage Replacement of Drive Motor 1 Turn off amp lock out main power to the ice flaker Remove electric wiring cover on the drive motor Remove the power leads attached to terminals marked L and L3 Refer to Figure 15 The drive motor is attached to the gearbox with 4 bolts through the motor mounting plate Remove the 4 bolts The motor may be removed by pulling it away from the gearbox There are no setscrews or couplings the motor shaft fits directly into the hollow high speed input shaft on the speed reducer with a 4 key If the old motor cannot be removed easily then locate two threaded holes on the motor mounting plate They will be on the horizontal centerline one on each side of the input shaft Insert one of the mounting bolts into each threaded hole so they push against the drive motor you may have to rotate the motor housing so
65. ng care to tighten them equally so the retainer goes in straight 11 Remove the flexible coupling from the top of the flaker shaft then remove the 4 bolts holding the top bearing retainer in place 12 Repeat steps 4 9 above for the top bearing and retainer removal Note there will not be a bearing plate on the top bearing and there will be two sets of oil seals top and bottom 13 Rotate the shaft to check for proper clearances before re installing the drive assembly 14 Re install the flexible coupling speed reducer and drive motor 15 Remove power lockout and turn the flaker on Check rotation and amp draw prior to opening the liquid solenoid valve 63 II Service amp Adjustment 16 Energize the liquid solenoid valve and allow the machine to begin making ice 17 Discard the first half bin of ice Clean and sanitize the storage bin prior to using ice for consumable products Main Shaft E50K14 Bearing Seal E50D2 Sleeve Journal E50K4 NX Bottom bearing retainer E50K1 ZA GAG EN IIIa N Bearins WEE F A 7 ie thrust plate A WE E50K5 N La Bottom bearing cover E50D2 Sleeve Journal 64 12 Ice Flaker and Condensing Unit Drawings 12 Appendix A Ice Flaker and Condensing Unit Drawings 12 Ice Flaker and Condensing Unit Drawings Figure 16 Assembly Drawing 51 76 and 101 RL 410 Minimum for Serv
66. ng halves with required clearance and re tighten 257 s II Service amp Adjustment Figure 15 Drive Motor and Speed Reducer Disassembly Drive Motor Speed Reducer Flexible Coupling Replacement and Adjustment Of Water Float Valve 1 Shut off the water supply to the ice flaker and drain the supply line 2 Loosen and remove the compression fitting at the float valve While holding the float valve body with pliers or a crescent wrench remove the water float valve fitting from the valve body 4 Using a 13 16 socket a spark plug wrench works well remove the locking nut from the valve body you may need to hold the valve body to keep it from turning 5 Remove the old valve and fiber washer Install new valve with fiber washer on the inside of the water sump and tighten the locking nut with the socket The valve body should be held in place with the discharge port facing straight down 6 Re install the float valve fitting and reattach the water supply line 7 Turn on water shut off valve and check for leaks at the compression fitting and at the float valve fitting The water level should be maintained to the point just below the lower edge of the water return trough while the flaker is operating To adjust the operating level hold the float in one hand and push or pull on the brass shaft depending on whether the water 58 11 Service amp Adjustment level is too high or too low Watch the operat
67. ng into the water collecting trough TO REPLACE ICE DEFLECTOR PROCEED AS FOLLOWS 1 Shut off ice flaker and allow machine to pump down de ice Once the machine is clear of ice disconnect the main power to the ice flaker and LOCK THE DISCONNECT SWITCH IN THE OFF POSITION to prevent accidental start up Reaching up from the bin into the freezing chamber loosen and remove the bolts holding the existing ice deflector in place Remove the damaged ice deflector and deflector brackets if necessary through the bottom opening Position and bolt the new ice deflector and brackets to the shaft Tighten the bolts with the deflector adjusted to within 14 but NOT touching the evaporator surface or aluminum casting Remove all tools from inside the machine Remove lockout device from the main power disconnect and turn on the main power Turn on the ice flaker switch you may need to press the overload reset button and check the deflector to insure that it does not touch the evaporator or aluminum casting 54 11 Service amp Adjustment 8 If the deflector makes contact with the evaporator surface or aluminum casting at any point then shut down the machine and repeat the above steps to readjust the deflector Replacement and Adjustment of the Squeegee amp Squeegee Wrapper Shut off ice flaker and allow machine to pump down de ice Once the machine is clear of ice disconnect the main power to the ice flaker and LOCK T
68. nst the OUTER race only DO NOT press in using the inner bearing race or damage may occur Again you may use a block of wood with the center hollowed out to clear the inner race and tamp in place Drive the bearings down into the blade so they seat within the counter bore 9 Drive the seals in similarly with the open end of the seal lip facing inward to the blade Make sure they are square and flush with the blade ends 10 Re install the end caps noting the top and bottom caps Install the blade in the machine using the 5 8 screws Note the grease fitting goes on the bottom 11 Confirm and adjust blade spacing from the blade tips to the evaporator wall There should be 0 008 nominal gap at the blade tips to the wall Check the gap along the length of the blade at 3 points minimum top bottom and middle 0 003 can be expected m 62 12 13 11 Service amp Adjustment Top off the grease with a few pumps until you feel resistance in the grease gun This is to eliminate any air trapped in the blade assembly Return ice machine to service Bearing Replacement Bearing replacement on large capacity machines is accomplished without removing the shaft from the flaker 1 Turn the ice flaker off and pump down until all ice is removed from the evaporator 2 Shut off main disconnect and lock out power 3 Remove the speed reducer and drive motor from the machine refer to instructions on page 57 Leave the flexibl
69. on open inlet water valve field supplied amp installed near the back of the ice flaker and check water level in sump The water level in the sump should be just below the water return trough see Figure 9 below Figure 9 Sump Water Level WATER LEVEL 2 Make sure the ON OFF switch is in the OFF position then turn on the main disconnect 3 Check voltage between line 1 and line 2 and verify that it is within nameplate ratings 4 Turn the ON OFF switch ON 5 Verify that the solenoid valve has opened the valve will click loudly 6 Verify that the drive motor and water pump start 7 Verify that water is delivered to the distribution pan located inside the evaporator 8 Verify that the distribution pan water level is maintained at the half full point Open or close the water adjustment valve until the water level is maintained at the proper level see Figure 10 below Figure 10 Water Distribution Pan Water Level 232 9 10 11 12 13 14 15 16 17 18 19 20 21 7 Start amp Adjust Allow 10 15 minutes to let the ice flaker come down to temperature and balance out Verify that ice is being frozen and harvested over the entire surface of the evaporator If it is skip to step 14 below If it is not continue to the next step Check for bubbles in the sight glass located on the liquid line of the flaker If present add additional refrigerant to the system until the bubbles disappe
70. on Method on Ice Bin Refer to bin manufacturer s installation instructions for proper assembly and set up procedures Locate and set the bin on a solid level footing Once the bin is set in place and leveled the Rapid Freeze ice flaker can be placed inside the drip pan Exhibit 2 illustrates the forklift and block method of placing the ice flaker on the bin Forklift amp Block Method You will need Y Forklift truck with adequate load and height capacities v 8 2 X 4 wood blocks approximately 6 8 long v 2 2 X 4 s approximately 36 long v Pry Bars Step 1 Position ice flaker on forks Step 2 Stack two wood blocks in each corner of the drip pan on the ice bin Step 3 Lift ice flaker over the wood blocks position ice drop zone over the bin top opening then set the flaker on the blocks Step 4 Remove forklift Step 5 Stack the two 36 long 2 X 4 s on the side of the bin beside the drip pan overlapping the front and back of the bin Step 6 Using a pry bar as a lever on the 2 X 4 s raise the side of the flaker and remove the TOP blocks only Step 7 Repeat steps 5 amp 6 on the other side Step 8 With the flaker sitting on one 1 block under each corner repeat steps 5 6 amp 7 removing the remaining blocks Drip pan flanges MAY bend slightly Step 9 Straighten the drip pan flanges if necessary 4 Installation of the Rapid Freeze Flaker Figure 2 Ice Flaker Installation CONTROL PANEL REMOTE LOW SID
71. oo high Adjust the water regulating valve to set level in the distribution pan to half full One or more water Replace as necessary distribution tubes is missing or broken Speed Reducer 1 Oil is leaking between the front of the motor and the motor mounting flange High speed oil seal in the speed reducer is worn Replace seal 50 10 Troubleshooting Problem Possible Cause Remedy 2 Oil leaking is evident a Slow speed oil seal Replace seal on the top of the in the speed reducer flexible coupling is worn 51 II Service amp Adjustment 11 Service amp Adjustment II Service amp Adjustment Kirk CAUTION ES THIS INFORMATION IS INTENDED FOR USE BY INDIVIDUALS POSSESSING ADEQUATE BACKGROUND IN ELECTRICAL REFRIGERATION AND MECHANICAL SERVICE ANY ATTEMPT TO REPAIR MAJOR EQUIPMENT MAY RESULT IN PERSONAL INJURY AND OR PROPERTY DAMAGE THE MANUFACTURER OR SELLER IS NOT RESPONSIBLE FOR THE INTERPRETATION OF THIS INFORMATION NOR WILL THEY ASSUME ANY LIABLITY IN CONNECTION WITH ITS USE nee CAUTION EE Ed PW NGER THE CONTROL PANEL ON THIS ICE FLAKER MAY BE POWERED BY TWO SEPARATE POWER SOURCES DISCONNECT BOTH SOURCES PRIOR TO SERVICING THIS PIECE OF EQUIPMENT FAILURE TO DO SO MAY RESULT IN AN ELECTROCULTION HAZARD LE DANGER EE ir WARNING ES ONLY TECHNICALLY QUALIFIED PERSONS EXPERIENCED IN THE HANDLING OF REFRIGERANTS AND THE OPERATIO
72. ould be glowing If the light does not come on check the connections on the base or terminal strip until the LED lights b Move the receiver until the LED on the receiver lights When proper alignment has been achieved secure the receiver c Check once more that the LEDs on both the emitter and receiver are lit Realign or tighten loose connections as necessary to keep both LEDs lit 10 Reroute and fasten cables as necessary If the photoeye elements are installed in the ice bin as opposed to in recessed housings in the bin tops leave enough slack in the cables to provide for drip loops in the cables so that condensation will travel down the cables and drip into the bin and not onto the emitter or receiver DO NOT run the photoeye cables close to high voltage wires High voltage wires will interfere with the low voltage control signals and may cause the ice flaker to shut down 11 Turn on the control panel ON OFF switch The flaker should begin making ice within minutes Ice Bin Thermostats The use of a bin thermostat is not recommended and is not permitted The Rapid Freeze ice flaker is designed so that the freezing drum operating at 5 F is located directly over the ice drop opening in the bin This large opening permits cold air to cascade off the evaporator down into the bin Since the air temperature in the bin is equal to or lower than the ice temperature the set point of the thermostat cannot be adjusted with suffi
73. overload condition 5 Compressor Run Light Green Light is on when the compressor contactor is engaged 6 Low Oil Pressure Failure Light Red light is on when low oil pressure switch opens shutting down the compressor Light will stay on until pressure switch is manually reset 7 High Discharge Pressure Light Red light is on when high discharge pressure switch opens shutting down the compressor Light will stay on until pressure switch is manually reset 8 Low Suction Pump Down Light Amber light is on when the ice flaker is off and low pressure switch is open pumping down and shutting off the compressor 36 1 2 3 4 5 6 7 8 9 8 Electrical Systems Figure 13 Ice flaker Control Panel Interior Layout get aet XE Gi UI itii FT 11 inia MAMA i ial d i 3 A St sa S T EE ei Pel i villi 9 Motor Contactor Provides power to the drive motor and water pump Energized during freezing and pump down cycle then timed off for shut down Auxiliary contact provides power to the liquid solenoid valve when the contactor is energized Control Transformer Provides 24V control power to the control panel components control module motor contactor and indicating lights Control Module Main control processor Incorporates motor overload operating circuit and off delay circuit Controls motor contactor and solenoid valve power Photoeye Power Module Processes signals from electronic
74. r Deep Sump Application Washer 102 000813 Compressor Mounting Foot Compressor Mounting Foot Shipping Spacer Spacer 027 0189 00 Mounting Stud Spring Mount Mounting Mounting Stud Mounting Nut Nit Upsr Upper A Spacer Compressor Mounting Foot Rubber Spacer Mounting N Spring S 1 rt r ex Mounting eg Rubber Spacer Spring em Be Lower ess SH SY Si Mounting Mounting Base ei el Nut Lower 1 En i eM Mounting ase f Lockwasher Lockwasher Locking Device Mounting Nut Lower Mount is shown in properly adjusted position 21 5 Installation of the Condensing Unit Electrical Follow local applicable wiring codes to wire main electrical power from building distribution center to main power terminals in condensing unit panel Single compressor units Install wiring race conduit between ice flaker control panel and condensing unit control panel For full annunciation indicating lights of condensing unit operation you will need to pull up to 9 wires for single compressor units 15 wires for dual compressor units between the flaker control panel amp condensing unit panel as detailed below Q Two wires will be connected between the condensing unit amp ice flaker panel to terminals marked A amp B respectively terminals A to A B to B Q The remaining wires will be used to monitor the operation of the condensing unit 7 for single compressor 13 fo
75. r after the bin is full to capacity Operating the flaker with a full bin will cause the ice deflector to bend or break as it churns the ice In extreme cases it may result in damage to the speed reducer and or the electric drive motor and flexible coupling The proper and approved bin level control is the photoelectric eye When ordered with the machine the eyes are mounted on brackets that will attach to the bin top or wall The cables are routed through the bottom casting of the ice flaker The power module is mounted inside the ice flaker control panel Figure 8 Electric Eye Ice Level Control Installation Instructions for Photoeye Ice Level Controls 1 Turn off the ice flaker at the control panel and at the main shut off disconnect Cover or remove any ice that may be present in the ice storage bin 2 Open the front cover of the flaker control panel Locate the 11 pin mounting base for the photoeye control module If the control module is installed in the base unplug the control module 3 Mount the photoeye emitter If the storage bin top was supplied by Howe there will be recessed pockets in the bin top for placement of the photoeye elements If pockets are not present mount the emitter securely to the top or side wall of the bin and align the emitter so that it projects its beam directly across the ice drop opening 4 Locate the photoeye receiver Again if the storage bin top was supplied by Howe there will be recesse
76. r dual compressor Indicator light Flaker panel Condensing Unit terminal Terminal GREEN Compressor Run 1 4 2 11 AMBER Low Pressure pumpdown 3 3 4 5 RED Low Oil Pressure Failure 5 1 6 11 RED High discharge pressure failure 7 2 8 6 For Dual compressor units these additional connections must be made Indicator light Flaker panel Condensing Unit terminal Terminal GREEN Compressor Run 9 16 10 11 AMBER Low Pressure pumpdown 11 15 12 17 RED Low Oil Pressure Failure 13 13 14 11 RED High discharge pressure failure 15 14 16 18 Some model condensing units do not require oil failure switch omit wiring when not present 22 5 Installation of the Condensing Unit Refrigerant Piping If the ice machine is less than 20 running feet from the condensing unit good refrigeration piping practice dictates that you field install a heat exchanger SLHE supplied by factory when applicable next to the ice machine Figure 7 Ice Flaker Refrigeration System Piping typical DLENDID i VALVE r LIQUID FT W rarne DRWE HEAT EECHANGER E MOTOR AIR COOLED CONDENSER E OOOJDO S Eed aa IC E FLAKER TEV VALVE LIQ UID Ls JHLET COMPR
77. r long runs good refrigeration practice dictates that the liquid line size be increased by one size to prevent flashing due to excessive pressure drop If the system is fully charged the presence of bubbles in the sight glass at the ice flaker is a visible indication that flashing is occurring It may not be possible to adjust the thermostatic expansion valve properly when this condition exists Note Flashing may also occur if the liquid line is run through hot areas of the building such as boiler rooms or smoke rooms If this is the case the liquid line should be insulated KKK CAUTION EE WHEN CONNECTING THE ICE FLAKER TO A LOW TEMPERATURE RACK A SUCTION PRESSURE REGULATOR EPR MUST BE INSTALLED TO MAINTAIN SUCTION PRESSURE AT THE ICE FLAKER AT APPROXIMATELY 28 PSIG FOR R 404A 20 PSIG FOR R 22 5 F KKK CAUTION ES Suction Line For runs longer than 150 feet the next size suction line may be used for horizontal runs and slightly pitched towards the compressor rack Vertical risers should be the same size as the ice flaker connection size to maintain proper velocity for oil return If the vertical riser is more than 10 feet it is necessary to install a P trap at the bottom of the riser Install an additional trap for each 15ft of riser to facilitate oil lift The suction line should always be insulated EPR Valve When connecting to a refrigeration rack system the ice flaker should be connected to a low temp rack An
78. r softening system P Freezing surface is coated with hard water deposits Entire refrigerant charge is in accumulator Clean the evaporator surface with ice machine cleaner Pump out accumulator and restart the system Adjust TXV as necessary 5 No ice freezes on the evaporator and compressor short cycles Ge Loss of refrigerant charge Inspect refrigeration system for leaks Repair as necessary and recharge system Power element on the TXV is defective Replace power element or TXV 6 Flaker makes ice intermittently and compressor short cycles Ge Undersized water line Install properly sized water line Low water pressure under 20 psi Contact factory for guidance e Water filters are clogged Replace water filters 48 Problem 10 Troubleshooting Possible Cause Remedy 7 Ice flakes are too thin Evaporator temperature is too high e Check and adjust EPR valve if equipped EPR should be set between 5 F and 10 F Close the TX V 1 2 turn at a time until ice quality is acceptable Wait 10 15 minutes between adjustments to allow the system to balance Condensing unit is not producing rated capacity Compressor valves may be broken Repair replace as necessary Condenser may be dirty Clean fin coils or tubes Head pressure controls may be defective Repair replac
79. r translation of this manual is prohibited without prior written permission of Howe Corporation except as allowed under the copyright laws Howe Corporation 1650 North Elston Avenue Chicago IL 60642 1585 Phone 773 235 0200 Fax 773 235 0269 e mail howeinfo howecorp com web www howecorp com Revision date August 2010 ii TABLE OF CONTENTS 2 TO UCHO E Introduction to the Raped Preege Ice Fla ennn Important Safety Information tee e rette l a Pausa ENEE Safety Symbols and What They Mean eren nennen 3 Receiving and Inspection of Equipment 4 Installation of the Rapid Freeze Flaker Installation Conditions ss iei Eee Installation without ice bn Installation on Ice Storage Bins essere enne nennen nnne Recommended Installation Method on Ice Bum Water Supply amp Filter Connections nn ener ener enne 10 Refrigerant Charging y n Sp 11 Wiring amp Electrical Connections 13 Piping Connections ote Hed d dae Hl E teet id 14 5 Installation of the Condensing Unilt 19 Roof MoUHtINE aa nee a Cepit ete de tete A 20 ACCESS T 20 Spring Mounted Compressor ee e etre bie ere e e st ne c o de 20 Rigid Mounted Comptresso
80. ssary to clean the flaker as often as every 2 months whereas in normal or soft water areas twice a year may be sufficient When cleaning is necessary proceed as follows 1 Turn off refrigeration compressor If flaker is connected to a compressor rack close the liquid line shut off valve Turn off the ice flaker switch and adjust the off delay time adjustment fully clockwise Remove all ice in storage bin Close water supply shut off valve Uno AY Sr PS Drain water from the drain connection in water sump Some models are equipped with a drain valve others have a drain plug located below the water float valve connection 6 Prepare the cleaning solution following the instructions on the bottle Er CAUTION EE USE APPROVED ICE MACHINE CLEANERS ONLY MIX SOLUTIONS IN ACCORDANCE WITH THE MANUFACTURER S INSTRUCTIONS ICE MACHINES CLEANERS CONTAIN ACIDS WHICH MAY CAUSE BURNS HANDLE WITH CARE IN CASE OF EXTERNAL CONTACT FOLLOW FIRST AID INSTRUCTIONS ON THE BOTTLE IF SWALLOWED SEEK IMMEDIATE MEDICAL ATTENTION KKK CAUTION EE 7 Pour solution of ice machine cleaner into sump to normal operating level Do not overfill as the water may overflow into the ice storage bin 8 Start the ice flaker drive motor and water pump by turning the switch on then immediately off This will allow the gear motor amp water pump to run for approximately 30 minutes with out refrigeration to circulate cleaning solution over th
81. st be closed to start the machine but opening any switch will shut the machine off 12 Photoeye Terminals Terminals for installing photoeye level control emitter and receiver Control Module The E20T48 control module is the main processor for the ice flaker control panel It incorporates the timer functions control relay functions and overload relay functions Motor Overload Adjustment Adjusts the sensitivity of the motor overload protection device Set at factory Adjust only if the motor shuts off on overload and there is nothing preventing the motor from turning De ice collecting in the evaporator very soft ice seized bearings etc Off delay Timer Adjustment Sets the delay between turning the flaker off closing the solenoid valve and shutoff of the motor and water pump Factory set Adjust only if ice is still present in the evaporator when the motor and water pump shut off or if the motor and water pump operate for an excessive period of time after the evaporator stops freezing the feed water Terminal Description Number 1 2 24 V AC input power 3 Ice Flaker run input signal all ON OFF switches ice level controls and any special controls must be in this circuit 4 Overload reset input normally open momentary contact 5 Motor overload output for overload indicating light Energized upon overload condition stays on until overload is manually reset Red LED on control module indicates overload condition
82. t gp tod na a AoA eae eee 20 Refrigerant Pipins conet te erede pee ette eret dte e ertet 23 6 vuv ig m 27 Electric Eye Ice evel Control ssori u nin Baki 28 Installation Instructions for Photoeye Ice Level Controls eee 28 Ice Bin Thermostats a 8 ann Ba ee re ce ee Dette Ne uae HENRI elses 29 Rib Heating BEl iments ananas rh Haste iet eu ie ote e er d Oa ee 30 T Start amp Adjust ETETEA TT EE TI AAA 31 Checkliste et Agama ka Atap EE 32 8 Electrical Systems 5 scccscissadsccsesccsosesseovessonncssueesosessosacsesessubncsensesseessedeeesosassseessesoses Norreen hst osni 35 Control Panel Layouts coi dne re 6 36 Control Module x uy un a RN eR HR HR IH Ree AEN 38 9 Malntengnce AA Aa maa Aaaa aaa 39 Ice Machine Cleaning Instructions u nA ukue 40 UR OT EE 45 OPETI ON cit ee ee Eet Mee 46 Er eezi e and Refrigeration idi re Glee b e eid e E reete 47 Ice Storage and Removal eee dette Hen am HE E el 49 Speed EE UE c EEE EREE E EEEE EA EEEE 50 IL Service amp AGjUSUMENL cisccsccessssenscsvccsosssesenssastscessessssnsncsbeceosesccsnasessenssesossnbessetsessoossensessveges 52 Replacement of Photoeye Ice Level Controls eese rennen 54 Replacement and Adjustment of Ice Deflector eese rennen 54 Replacement and Adjustment Of The Squeegee amp Squeegee Wrapper sess 55 Replacement Of Water Pump dep bert te tuia eto e E pee etes 56 Repl cement Of Drive Mo
83. t Number 3 SE lug spacers Kant G225J1 T Main shaft E50D1 E75D1 E100D1 G225D1 8 Shaft sleeve E50D2 G225D2 Top ice blade 20 L 122 L 204 L E30E3 E20E2 E30E3 Top Rotary Blade Assembly with carrier I Sg Nuts bolts and 4 washers top ice blade ESQES EES ENES i Bottom ice blade E30E3 10 Bottom rotary blade 2 G225E5 assembly with carrier Nuts bolts and 10a washers bottom ice E30E5 blade 11 Ice deflector blade E50G5 G225G1 Nuts bolts and Hs washers ice deflector B3098 NN GK RA 60 12 Insulating ring 2 E50J1 4PCS 12a Insulating ring adhesive 7V033 1 2 pint B Ice deflector bracket E50G9 _ 2 14 Auxiliary ice scraper 15 Q E20E4 Nuts bolts and 15a washers auxiliary ice E20E7 scraper 16 Squeegee E30F3 E75F3 E100F3 G225F3 17 Squeegee wrapper E30F8 E75F4 E100F4 G225F4 Nuts bolts and 17a washers squeegee E30F22 E75F8 E100F8 G225F5 wrapper Number in parentheses indicates quantities if more than one is required 86 14 Parts List 76 1 RL 101 1 RL ERE m6 2 RE 101 2 RL MUERE d Part Description Part Number 18 Top squeegee bracket E50F1 E75F1 E50F1 G225F1 E E50F1 G225F2 bracket 20 Main shaft bearings 2 E50K1 G200K1 21 Bottom bearing thrust ESOK2 G200K2 plate 22 Top main bearing 23 kai seal E50K13 G225K7 Bottom main bearing E50K14 G225K7 PL grease seal 1 252 Ran Deanne
84. to turn each until ice is made and harvested over the entire length of the evaporator Check the pressure gauges to ensure equal pressure for both circuits Failure to make proper TXV adjustments may cause unwanted ice build ups in evaporator damaging component parts and void warranty 61 II Service amp Adjustment Replacement and Adjustment of Ice Blade Ice blade adjustment is not normally required except after bearing replacement If you suspect the blade needs adjustment because of excessive clearance it is more likely that the bearings have worn Do not try to adjust the blade clearance without checking for and correcting worn bearings When checking tolerances do NOT use automotive type feeler gauges Automotive types are too short and not flexible enough to give a true reading You MUST use industrial machine tool feeler gauges these are about 1 2 wide by 12 long These machine tool feeler gauges are available from the factory if you cannot locate them locally Clearance between the ice blade and the evaporator freezing surface must be between 0 004 and 0 006 005 to 008 for Rotary Blades 20 Ton only with the evaporator at room temperature If it is determined that the ice blade clearance must be adjusted 1 Locate the exact position on the evaporator freezing surface where the clearance between the tip of the ice blade and freezing surface is the least Check clearance at the top and botto
85. tor mete 56 Replacement Of Speed Reducer and Flexible Coupling eee 57 Replacement and Adjustment Of Water Float Valve eese rene 58 Replacement of Solenoid Valve anerkennen an ea 59 Replacement and Adjustment of the Expansion Valve TXV a 59 Replacement and Adjustment of Ice Blade AAA 62 Replacement of rotary blade bearings 20 ton model only 62 Bearing Replacement suia 62 12 Appendix A Ice Flaker and Condensing Unit Drawinss 65 13 Appendix B Wiring Diagrams 69 14 Appendix C Parts BL e 84 iv 2 Introduction 2 Introduction 2 Introduction The Rapid Freeze by Howe ice flaker is backed by over 50 years of proven performance and innovation Long known for durability and reliability our flake ice equipment is unsurpassed in energy efficiency and low maintenance Available in a wide variety of sizes and configurations the rugged Rapid Freeze flaker can be found in diverse applications from supermarkets and food processors to remote fishing villages Introduction to the Zzzz Freeze Ice Flaker Refer to Figure 1 for a guide to the major components of the Howe ice flaker Among the key features are Evaporator The heart of the Howe ice flaker is the carbon steel dir
86. uff key on the slow speed output shaft of the speed reducer has sheared System is short of refrigerant 47 Repair or replace the speed reducer Charge system until there are no bubbles in the sight glass Problem 10 Troubleshooting Possible Cause Remedy harvests only on the upper half Superheat setting is too high Open the TX V 14 turn at a time until ice is harvested over entire evaporator Wait 10 15 minutes between adjustments to allow the system to balance TXV sensing bulb is improperly located Relocate the bulb approximately 6 from the inlet side of the suction line heat exchanger or on the horizontal section of the suction line d Head pressure is too Adjust or replace head pressure controls as low necessary e The liquid line Replace the filter drier filter drier is dirty 2 Ice freezes and harvests entire height of evaporator but harvests on only one side of the drum Main bearings are worn Replace worn bearings Repair or replace main shaft bearing sleeve if excessive wear is detected Ice blade clearance is too high Check and adjust blade clearance as necessary 3 Ice freezes and harvests entire height of evaporator but harvests poorly or at random 4 Ice freezes soft on entire height of drum and drive motor cuts out on overload shortly after starting Feed water is too hard Install a wate
87. veness of the heaters KKK CAUTION ES NEVER INSTALL AN ICE FLAKER IN A COLD ROOM 45 F 7 C OR LOWER THE ICE FLAKER WARRANTY IS VOID IF THE ICE FLAKER IS INSTALLED IN A COLD ROOM OR OUTSIDE WHERE THE AMBIENT TEMPERATURE MAY DROP BELOW 45 F 7 C OR LOWER qe CAUTION EE Optimum surrounding air temperature range 60 F 15 C to 95 F 35 C Minimum air temperature without heater 50 F 10 C Minimum air temperature with heater 45 F 7 C Maximum air temperature 100 F 38 C Optimum water temperature range 60 F 15 C to 80 F 25 C Minimum water temperature without water mixing valve 45 F 7 C Minimum water temperature water mixing valve must be used 36 F 2 C Maximum water temperature 90 F 32 C Installation without ice bin Rapid Freeze Ice Flakers may be installed under certain conditions without a typical ice bin When the flaker is installed without a bin it must have a drainable condensate pan located under the machine The flaker must also be mounted high enough off the floor so there is no chance that somebody may reach into the evaporator from below either with a pole or their arm while the flaker is operating Refrigerating the ice storage bin is not normally necessary nor is it recommended However in those cases where ice is to be discharged into an existing freezer room then as a minimum electric heaters should be installed on the bottom casting regardless of the actual

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