Rapid Freeze® Ice Flaker
Contents
1. freezing surface of the Evaporator If the TXV is underfeeding the top of the frost pattern will be a milky white color and the bottom will be clear soft and not harvest properly 2 w Superheat is not a reliable method of adjusting TXV on Ice Flaker TXV must be adjusted while TXV Underfeeding visually inspecting the Evaporator s freezing o surface SS 2 Ifthe TXV is not underfeeding close the D o TXV by 1 4 ofat it To increase the refrigerant feed of the TXV by 1 4 of a turn and wait 5 fe i minutes rotate stem counterclockwise To decrease the refrigerant feed of the TXV 3 Visually inspect the frost pattern of the rotate stem clockwise Evaporator TXV Sensing Bulb 4 Repeat steps 2 and 3 until underfeeding can be seen at the very bottom of the Evaporator 5 Now open the TXV by 1 4 of a turn and wait 5 minutes 4 30 6 Repeat step 5 until the entire frost pattern of the Evaporator becomes milky white and harvests completely Bulb placement should be at the 4 30 position oe 7 Confirm correct EPR setting see p 16 of a clock on the suction line 17 o rm ra O ok e o a lt G YN Solenoid Valve The Solenoid Valve controls the flow of liquid refrigerant to the Evaporator The Solenoid Valve should energize immediately upon starting the Ice Flaker The Solenoid Valve should only de energize when the Ice Flaker is in Off Delay Cycle p 20 or2. Cycle voltage is present at Ice Flaker Run Switch Leg Term 6 until the time setting has been met The Solenoid Valve Contacts Term 7 amp 8 are opened when the Off Delay Cycle is initiated Off Delay Setting Under Normal Operation the Off Delay Setting should be adjusted to run approximately 2 minutes after the Solenoid Valve shuts off the refrigeration to the Ice Flaker For proper adjustment turn knob counterclockwise until it stops Then turn clockwise 1 8 turn and stop The 30 minute setting is used for Cleaning Procedure only Overload Condition An Overload Condition begins when the Overload Sensing Coil reads amperage from the motor lead passing through it that is higher than the Motor Overload Setting During an Overload Condition no voltage is present at Ice Flaker Run Switch Leg Term 6 the Solenoid Valve Contacts Term 7 amp 8 are open and the Overcurrent Condition Indicator Light is lit red The Motor Overload setting should be adjusted on start up and anytime changes are made to the Drive Motor or Main Shaft 21 Motor Overload Setting The proper adjustment of Motor Overload Setting will protect the Ice Flaker and help avoid nuisance service calls To set the Motor Overload correctly 1 Mark the location of the setscrew before an adjustment is made as a point of reference 2 Place a small flat blade screwdriver in the adjustment screw while the Ice Flaker is operating 3 Then gently
3. Flaker See Drive Motor will not start above Check and replace Flex Coupling as necessary 36 Problem Possible Cause Possible Solution 1 Incorrect Evaporator Temperature 1 Adjust refrigeration to Ice Flaker Ice Flaker not meeting rated 2 Supply water temperature is outside 2 Adjust supply water to between 45 F and 90 F For temperatures below range capacity mandatory range contact Howe about Low Temperature Mixing Valve 3 Ambient temperature is outside mandatory 3 Adjust ambient temperature to between 50 F and 100 F In unable to adjust range relocate the Ice Flaker For temperatures below range contact Howe about Low Ambient Kit 1 Water Distribution Pan is overflowing 1 Adjust Water Regulating Valve so the Water Distribution Pan is halfway full 2 Water from Side Spouts or Lead Spout is 2 Clean spouts of any debris or blockages Make sure all spouts are perpendicular to not reaching freezing surface of and within reasonable distance from surface of Evaporator Evaporator Ice freezes together 3 Water is ramping off rings of ice formed 3 Adjust refrigeration to the Ice Flaker in the Ice Bin on Evaporator 4 Ice Bin is not draining properly 4 Check that all drains are flowing freely and pitched away from Ice Bin 5 Ice turnover is low and Ice Bin inventory 5 Use or discard ice within a reasonable time of producing it Contact Howe about has become stale and clumped by lengthy Energy Sav
4. and slowly turn counterclockwise until Overload Condition Indication Light illuminates Do not force adjustment screw past bottom stop 4 Then turn adjustment screw clockwise 1 hash mark and stop 5 Press the reset button to start the Ice Flaker again Va w ba jo go e jo 4 w fk e gt o G ken O ok e o a pu G w YN Photo Eyes Level Control Photo Eye Wiring li Al hare Ll F E20T68 Level Control Relay LC1 No Connection Emitter Partit E20T104 Receiver Part E20T105 N O Output Wired in series with module on off switch and remote i o 240V AC 6 1 Input O 40 3 2 Terminals 10 amp 1 24V AC Output Terminal 11 Trigger No Connection 22 The Photoelectric sensors or Photo Eyes shoot an infrared beam across the opening of the Ice Flaker If this beam in interrupted for more than 15 seconds the Ice Flaker will begin the Off Delay Cycle This prevents ice from filling into the ice making area and damaging internal parts The Ice Flaker will return to Normal Operation when the infrared beam is re established provided the Off Delay Cycle has completed If the Ice Flaker was purchased without an Ice Bin the Photo Eyes will be shipped loose and need to be properly mounted by the installing contractor Please contact Howe for further information Correct Wiring Arrangement Th
5. field installed before this connection The Ice Flaker requires a minimum water pressure of 20 PSIG and a maximum of 60 PSIG Float Valve The water level in the Water Sump is regulated by the Float Valve The water level should always be below the opening on the side of the Water Sump Water Regulating Valve Float Valve Section View of Water Sump Water should never be allowed to flow from the Water Sump back through the opening and into the Bottom Casting Adjust the water level by rotating the float end of the Float Valve Rotate clockwise to raise the water level and counterclockwise to lower the water level Water Pump The Water Pump drives the water in a continuous flow through the system The Water Pump inlet should be submerged at all times Air should never be pulled into the intake Overflow Drain The higher of the two drain connections on the Water Sump is the Overflow Drain If water is exiting the Water Sump through the Overflow Drain the water level is too high and the Float Valve needs to be adjusted Sump Drain The lower of the two is the Sump Drain It is used to flush the Water Sump of all liquid Stop Valve The stop valve attached to the Sump Drain fitting should always be closed during normal operation The stop valve should only be opened during cleaning or emptying of the Water Sump Va w ba jo go
6. not run or Ice Flaker in Overload Condition Water Pump will not run Ice does not harvest at the bottom of Evaporator Ice does not harvest on one side or angular section of Evaporator Ice accumulates on the ribs of Bottom Casting Ice Blade is frozen in place Possible Cause Defective Control Module CM Defective Drive Motor Sleeve Bearings are seized Speed Reducer is seized Motor Overload setting is too low Loose wiring Defective Control Module CM Blown Fuses Defective Water Pump Loose wiring TXV is underfeeding System is short of refrigerant Improper location of TXV sensing bulb Sleeve Bearings are worn Ice Blade clearance is too high Ambient Temperature is too low Motor Overload setting is too high Ice is freezing too thick or too hard Drive Motor has stopped Flex Coupling is broken Possible Solution Verify 24 VAC present across Term 1 purple and Term 3 red at Control Module CM Check voltage between Term 1 and Term 6 blue If no voltage present Control Module CM may be defective and need to be replaced Verify control voltage at terminals T1 Driv and T2 Driv in the Control Panel If voltage is present Drive Motor may be defective and need to be replaced Remove the Gear Motor from the Mounting Hub or the Speed Reducer from Top Casting and try to push the Ice Blade by hand If the Ice Blade will not move th
7. them to wear faster than normal ADJUSTMENT SCREWS FULL CONTACT WITH FREEZING SURFACE With normal usage the Squeegee can wear over time Worn Squeegees need to be trimmed or replaced 26 Drive Motor and Speed Reducer The Drive Motor is attached to the Speed Reducer by 4 mounting screws There are no other screws or pins holding the Drive Motor in place a MOUNTING DRIVE MOTOR SPEED REDUCER Drive Motors may provide a good deal of resistance when being removed There are 2 threaded holes on the face of the Speed Reducer in which the mounting screws can be inserted to help push the Drive Motor away One motor power lead for the Drive Motor should pass through the Overload Sensing Coil on the Control Module 1 time The Drive Motor and Speed Reducer should be placed in the orientation shown above Sleeve Bearings Ice Flakers have two Sleeve Bearings on the Main Shaft located in the Top Casting and the Bottom Casting Over time normal usage can cause these bearings to wear Worn bearings can result in ice harvesting problems and even damage to the Evaporator Improper refrigeration setting and lack of maintenance can cause the Sleeve Bearings to wear faster than normal Please contact Howe to receive the Sleeve Bearing Replacement Instructions for your model Ice Flaker Howe is proud to offer our Factory Rebuild Program as an al
8. to make sure all crates and cartons are accounted for Anv shortage or damages should be reported to the delivering carrier Damaged material becomes the delivering carrier s responsibilitv and should not be returned to the manufacturer unless prior approval is given Take care not to damage equipment when uncrating Piping The Ice Flaker has been thoroughly cleaned and dehvdrated at the factorv However foreign matter mav enter the svstem bv wav of the piping to the Rack 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 and in conformance with good practice required for the proper operation of the Ice Flaker The refrigerant pipe size should be selected from the Piping Table The interconnecting pipe size is not necessarilv the same as the stub out on the Rack or the Ice Flaker The following procedures should be followed 1 Donot leave units or piping open to the atmosphere any longer than is absolutely necessary 2 Use only refrigeration grade copper tubing properly sealed against contamination 3 Suction lines should slope 1 4 per 10 feet towards the compressor 4 Refer to the Suggested Refrigerant Piping Diagram p 6 for suitable P type oil trap locations to enhance oil return to the compressor 5 When brazing refrigerant lines Dry Nitrogen should be pas
9. D HOWE Rapid Freeze Ice Flaker Installation amp Service Manual For Use with Parallel Compressor Rack System 4000 RL 6000 RL Howe Cor oration Phone 1 773 235 0200 p Fax 1 773 235 0269 1650 North Elston Avenue Website www howecorp com Chicago IL 60642 1585 Email howeinfo howecorp com ENGINEERING GUIDELINES 3 Location Requirements Electrical Requirements Water Supply Requirement cccccvcvcncvcncccntveneccncveneccstvensccncnesescatvenescncsesencntvenoscstnenescntscnescnteonosctentenstessnsscteacesesnenssesssscsesescsceeses Drain Water Piping Requirements Refrigeration Requirements cio ici cidade Iaido a aka aiii PIPING Table i i EEE Na 7 Refrigera ant PIDeWOrK ciccscscscecccecscsnssatecacsssssstonsesceessrcbcbascncssneastcsasasceessunsoaesctasssaasecscensdcslesusasesedsieasbesadsacs lt dsadeussenscenssteoannececsads 7 Refrigerant Pipework Insulation Requirements 7 AA A EN 9 EVACUATION s uywa A A A data ka d a 10 Installation Checklist lt 0 c seseccsesvvecdsennsessveiecestsacesonsiedesestsedeneiedesuwadtsessiedesesasestsnsesesususesoanesesenacacsanaasedsnncsesssanesdsensvedbveiedesdencssees 11 START UP AND OPERATION ccccssscccsseccceccccececcsseccencccececceseccsseccenceseece
10. DIAGRAM Figure 1 From Liquid supply To Compressor Suction 15 Maximum Rise 15 Maximum Rise EPR Evaporator Pressure Regulator Piping Table 4000 RL 6000 RL 1 2 ODS 5 8 ODS 1 3 8 ODS 1 5 8 ODS 1 1 8 ODS 1 3 8 ODS For runs up to 150 feet If longer use next larger line size Refrigerant Pipework Howe recommends the field refrigerant piping be installed according to the Suggested Refrigerant Piping Diagram shown on previous page These pipe sizes are for HFC refrigerants and are not applicable to R 744 installations or secondary refrigerant applications Howe recommends the use of hard drawn ACR type L tubing with refrigeration grade wrought copper long radius elbows and fittings only No soft drawn tubing should be used in the refrigerant pipe installation No field installed P type oil trap is required at the base of the suction riser since all Ice Flakers are internally piped with a suction trap at the outlet of the evaporator Evaporator Pressure Regulator EPR valves must be field installed with the arrow correctly pointing in the direction of flow Installation specifications should require all refrigerant piping should be joined with a suitable silver brazing alloy while purging nitrogen through the piping to prevent copper oxidation scale from forming inside the tubing Refrigerant Pipework Insulation Requirements Field refrigerant pipework should be ins
11. Ice Flaker to operate inefficiently They are listed here in order of importance with regard to impact 1 Scale 2 Sediment 3 Chlorine Scale Scale or fouling is the accumulation of unwanted material on solid surfaces to the detriment of function Scale is primarily made up of calcium and magnesium hardness compounds It s estimated that scale is responsible for 70 of unscheduled maintenance inefficient operation and down time Scale forms on wetted surfaces accumulates in tubing and fittings and interferes with operation Sediment The formation of scale from dissolved minerals is made worse by sediment Sediment is suspended particles of dirt silt and other fine particulate matter that act as a catalyst for scale to form Sediment can be detrimental to the condition and performance of the Ice Flaker Particulates 33 cause added wear on parts and can clog valves and impede flow The effects of scale and sediment can be very destructive to the Ice Flaker Chlorine Chlorine is the most common disinfectant used to kill pathogenic organisms in order to make our water safe to drink However residual free chlorine in water can contribute to pitting rust and corrosion of stainless steel If not removed from water chlorine mixes with moisture in the Ice Flaker and Ice bin to form a mild hydrochloric acid This acid can cause surface rust to form on stainless steel surfaces in one to two years f
12. LI0 HAWN THIM v TIV1SNI LSA NOA DIVA VINO HO MALLAS HOWE UVAHY NOTAS TH 1N32 V DI ADI 301 S HI ONLLDINIDO NAHM F BATWA CIONINOS SNI OINON SV SIMVHAL apars 01 HOLY NOTH TANSS R A TONO SHIM Tuwa wa SaaS ANNO Supiy 221 VINOMAV OL Bal dew HOLY 0538 ga SSS TWO y SNLILS MOSEGRdWICO YOUNON OL BLHOM BNUVIIONI TWNOLLIQOW H LIA SF G IVAW St TN WA TYNOLdO NY NVH1 LIN SNIBN3ONOO OFAN AYOLOWA V OLLE NOVU TY41N329 Y OL CILIINNOO LON SI VINYA NOT NIHM V VINOWINY SUDAN LON TT NOJA SUDMIJ SLONSY TT OLLWONIddV Z ati OVOTHAMO HO LOW Y NELO NE DINAR SIHON SNILVO IQNI 2 SVH TINA L vu 403 1 33S 09 1 0 Z CI o goz CI Y IAYO ZHO9 ZHO9 Hdl ABOZCI DIN H3d SUBHLO AG U3IIAOYA 38 OL LJINNODSIO ISMA P NOLJILOMA LINDY HONVHA 39 Installation amp Service Manual For Use with Parallel Compressor Rack 4000 RL amp 6000 RL Rev Date 08 2014 Parts List 4000 RL 8 6000 RL Non Replaceable Parts Ref ANA Part No ef No Description 4000 RL 6000 RL 1 Top Casting E20A3 2 Bottom Casting E20B2 3 Evaporator E20C1 E30C1 Replacement Parts a Part No Ref No Description Includes 4000 RL 6000 RL 4 Handhole Cover E20A6 5 Bottom Bearing Cover E20B8 6 Main Shaft E20D2 E30D4 7 Ice Blade E20E2 E30E3 Feeler Gauge Kit Set of 7 gauges E10E15 8 Auxiliary Ice Scraper E20E4 9 Squeegee E20F4 E30F3 10 Squeegee Wrap
13. Overload Condition p 21 Sight Glass The Sight Glass provides a quick way to visually check that the Ice Flaker is being provided with constant liquid refrigerant and that there is no moisture in the system There should never be bubbles in the Sight Glass This indicates a flashing or inconsistent liquid feed The moisture indicator in the middle of the Sight Glass should always be green e Green Dry e Yellow Wet Field Capacity Check The Ice Flaker is a continuous production machine and makes ice at a steady rate once stabilized A Capacity Check confirms the Ice Flaker and refrigeration settings are correct 1 Choose an appropriately sized container and weigh it while empty Container Weight Lbs Run the Ice Flaker for 10 minutes 3 Position the container below the opening of the Ice Flaker 4 Catch the falling ice in the container for exactly 15 minutes Be sure that the container catches all of the ice 5 Weigh the ice and the container together in pounds using an accurate scale Do not drain before weighing Measured Weight Lbs 6 Subtract the weight of the container Measured Weight from 5 Container Weight from 1 Calculated Weight Lbs 7 Calculate the capacity by multiplying the calculated weight by 96 Calculated Weight from 6 x 96 x 96 Capacity Lbs per 24 hrs 8 Compare the number with the rated capacity of the Ice Flaker Keep in mind temperature
14. actory installation the system must be leak tight m w a 5 n al v D e j e i G 2 a LL Evacuation Do not use the refrigeration compressor to evacuate the svstem Do not start the compressor while it is in a vacuum A good deep vacuum pump should be connected to both the low and high side evacuation valves with copper tube or high vacuum hoses 1 4 ID minimum If the compressor has service valves thev should remain closed A deep vacuum gauge capable of registering pressure in microns should be attached to the svstem for pressure readings A shut off valve between the gauge connection and vacuum pump should be provided to allow the svstem pressure to be checked after evacuation Do not turn off vacuum pump when connected to an evacuated svstem before closing shut off valve The vacuum pump should be operated until a pressure of 1 500 microns absolute pressure is reached at which time the vacuum should be broken with the refrigerant to be used in the svstem through a drier until the svstem pressure rises above 0 psig Refrigerant used during evacuation cannot be vented Reclaim all used refrigerant Repeat this operation a second time Open the compressor service valves and evacuate the entire system to 500 microns absolute pressure Raise the pressure to 2 psig with the refrigerant and remove the vacuum pump 10 Installation Checklist 1 Has t
15. e D w e a gt oO o is u fu Howe Water Filters Howe offers a complete line of water treatment systems designed to extend the life and performance of the Ice Flaker Howe Water Filters inhibit the formation of scale and provides additional corrosion protection They remove 95 of all dirt rust and sediment larger than 5 microns They reduce chlorine to less than 2 PPM to guard against corrosion and improve ice quality Water Filter Cartridge Replacement 1 Turn off water filtration system by closing ball valve 2 Press the red button to release pressure 3 Remove housing s use filter wrench if necessary Clean housings with warm water If desired disinfect housings using 1 2 teaspoon of household bleach in a bowl of water Let stand 5 minutes and then discard 4 Insert new cartridges into filter housings Match cartridge model numbers to model numbers on bracket 5 Make certain the O ring is properly positioned and reinstall filter housing hand tighten only 6 Slightly open the inlet ball valve push the red pressure relief button to release trapped air until a small amount of water comes out release the red button and fully open the ball valve 7 Turn connected equipment back on 34 OD E er IO E Troubleshooting Note All wire colors are subject to change Problem Ice Flaker will not run Ice Flaker does not shut down whe
16. e Sleeve Bearings may be seized and need to be replaced Remove Speed Reducer and bring voltage to the Drive Motor If the output shaft cannot turn while not attached to the Ice Flaker it may be seized and need to be replaced Raise the Motor Overload setting at the Control Module CM Verify the amperage draw is in correspondence with the nameplate Check all wire terminals and tighten as necessary Verify 24 VAC present across Term 1 purple and Term 3 red at Control Module CM Check voltage between Term 1 and Term 6 blue If no voltage present Control Module CM may be defective and need to be replaced Check for control voltage across FU1 fuses Replace as needed Verify control voltage at terminals T1 Pump and T2 Pump in the Control Panel If voltage is present Water Pump may be defective and need to be replaced Check all wire terminals and tighten as necessary Adjust refrigeration to Ice Flaker Check for bubbles in the Sight Glass If present charge system as needed Relocated bulb to 4 30 clock position as originally set by factory Remove Speed Reducer or Gear Motor and check for play in Sleeve Bearings Replace if worn Adjust Ice Blade clearance to proper setting If ambient temperature is below 50 F relocate Ice Flaker to a warmer area Contact Howe about Low Ambient Kit Adjust the Motor Overload setting at the Control Module CM Adjust refrigeration to Ice
17. e Emitter should have only the blue amp brown wires connected to it The black lead has no connection and should not be wired to the Level Control Relay LC1 The Receiver should have the blue brown amp black wires connected Correct Voltage With Level Control Relay plugged in and power to Ice Flaker on remove wire leads from the Emitter and the Receiver Use a voltmeter to verify 24 volts across Blue and Brown terminals Alternatively you can check terminals 1 and 10 on the Level Control Relay If 24 volts is not present the Level Control Relay has likely failed and needs to be replaced 23 Sequence of Operation There are Light Emitting Diode LED indicators on the rear of both the Emitter Receiver The Emitter has a green LED which is illuminated whenever the Ice Flaker has power The Receiver has two LEDs The green LED is always illuminated whenever the Ice Flaker has power The amber LED is illuminated when it sees the infrared signal from the Emitter During Normal Operation all LEDs should be lit The Level Control Relay LC1 should open the Solenoid Valve and the Ice Flaker should begin making ice When the infrared beam is blocked both green LEDs will remain lit However the amber LED on the Receiver will go out After 15 seconds of the beam being blocked the Solenoid Valve will de energize and the Off Delay Cycle will begin Depending upon the adjustment of the Off Delay S
18. er Ice Production Management System storage time 37 IN SWS NISS D pa HG i LESTE TENTS ES SS JCU u u a 5 iii a JHR 5 EE SISIE 8 sol y 231315 5 5 8 w 2 8 3 A 5 8 6 8 8 2 4 21812 815 81815 215 dels ae 208 3 0 8 O aj s s 212 2 ole IBIS slas lt ejai jzje 8 2 3083 Sle Slalal sis SSS S 2 8 5 3 2 8 8 8 8 S 8 8 loc 21313 a lt ol loc 2 2 21 515 le Appendix Cut View xIpuaddy 38 230 1 60 Power Ice Flaker For other voltages please have a serial number and contact factory for the correct wiring diagram Wiring Diagram Appendix ve zo A a ama cl NOLVHOJHOO MOH ON SQ ON SAO IH MOLESTO zwaa zonas Y 0 82 9 IW on am 9 Siva al val sa maal aa Owe 204430 NO inoa Wum JOHLNOO 09 1 yZ 09 DNIHM MIU Y0 OMS SHOLON dNNd P AWO 09 EZ ONRU TUNEL H3MOd 09 1 087 80Z SNOLLOINNOO TWNUJU NI TENYd TOYLNOD HEAVY 301 JLOMAN ONY OTA 404 WNI HAL gt W 0 1073 SALON Soros U MHAZOQRIE VIAVLOO 5908 ON JUQI TONLNOD LSIMGIN Yay AG GRINLIVANNVAI NOLLVYOdHOO 3MOH AWIZU JOMLNOI TAAST V ONIEN Jl ELA ANI NQ Lr ASIN B TIWIGNI AJO DY JAQWIU 4 Gasn 9 CAO all E ONY V Ydin LON CO UND ONISAICNOO NI AY DH DNILWIOQI NV SI O 9 XONUVHIHO 3NIHOWA JHU NHM DAWA CIONTNOS INN INON IHL WIMOL TIM SIHA 8 ONY Vo STWNIMUIL NITWA
19. etting the Driver Motor and Water Pump will continue to operate for between 2 30 minutes If the Photo Eyes do not operate in this fashion please consult the Troubleshooting section Va w ba jo go e jo 4 w fk e gt Mechanical Operation 2 o eb O 1 Ice Deflector 4 Speed Reducer p 2 lceBlade 5 Drive Motor 3 Squeegee fe YN 24 Ice Deflector The Ice Deflector prevents ice from dropping into the water return trough A properly installed Ice Deflector should have the top outer edge positioned outside of the ice drop zone to ensure all falling ice will hit the Ice Deflector ADJUSTMENT SCREWS DROP ZONE A IF 2 BSR RS Rx IN 2 e lt oa ES S b ha 2 7 ESTO Se A RR RIA RIO RI PERRITA AOS A 2222222272 BORON AR IRIIRI ROS ROSIS SRS Section View of Ice Deflector So Q lt lt SS x gt There should be a minimum 1 8 clearance between the top of the Ice Deflector and the aluminum lip of the Bottom Casting under the Evaporator There should also be a minimum 1 8 clearance between the outer edge of the Ice Deflector and the Bottom Casting The Ice Flaker also features an Ice Deflector Scraper This plastic arm clears any excess buildup of ice on the Ice Deflector as it passes by the Ice Deflector Scraper The Ice Deflector should never touch the Ice Deflector Scraper or the Bo
20. he ambient temperature been verified between 50 F 100 F see Location Requirements p 3 Has the incoming water temperature been verified between 45 F 90 F see Water Supply Requirements p 3 Has the water supply pressure been verified between 20 PSIG and 60 PSIG see Water Supply Requirements p 3 Has the filtered water supply been verified as not RO water see Water Supply Requirements p 3 Has the Ice Flaker been located near a floor sanitary sewer drain see Drain Water Piping Requirements p 4 Have the EPR and Suction Line Heat Exchanger been installed correctly see Suggested Refrigerant Piping Diagram p 6 Have all the refrigeration lines been sufficiently insulated see Refrigerant Pipework Insulation Requirements p 7 Have the Photo Eye sensors been connected see Field Wiring p 9 Has the system been leak tested properly see Leak Testing p 9 10 Has the system been evacuated properly see Evacuation p 10 11 Has the system been charged properly 11 m w a 5 n al v D e j o pra lt O ok e o a lt G YN Start Up and Operation Water Operation D 0O E Water Inlet Connection Float Valve Water Pump Water Regulating Valve 12 aa 9 0 Water Distribution Pan amp Side Spouts Sump Connections Stop Valve Drain Outlet Water Inlet The supply water feed for the Ice Flaker must be connected here A shut off valve should be
21. he main liquid feed Racks equipped with gas defrost are not recommended for use with Howe Ice Flakers Both hot gas and saturated vapor defrost produce poor quality refrigerant returning to the liquid header which can result in saturated flash gas being supplied to the Ice Flaker If the Ice Flaker is intended to be connected to a gas defrost Rack please take all necessary measures to prevent flash gas from reaching the Ice Flaker Floating head pressure control systems will not normally affect the performance of the Ice Flaker However some highly aggressive low head pressure control strategies may affect performance if the liquid refrigerant supply pressures are not permitted to float below 125 PSIG on HFC refrigerant applications Please consult Howe if the system design intent will allow liquid pressure to drop below this threshold For floating suction systems Howe recommends a maximum of 10 F for the saturated suction temperature m We oO g gt 0a O 4 om D m wn un 0 E xo ke G eTo Ts 0 oO S LeTo Lu Field Installed Z Suction Riser Double Trap Liquid Line Suction Riser Howe Furnished Field Installed Counter Refrigerant Flow Suction Line Heat Exchanger Vert or Horiz Space Determined per Trap lt Suction Stub Within Within 4 Y y Howe Furnished Field Installed SUGGESTED REFRIGERANT PIPING
22. hz E20R3 29 Flex Coupling E20N9 H Heater Elements 3 Required HT150X240 037X50 Speed Reducer Oil SR OIL SYN vad R 507 Balance Port TXV ane E15V7 KT E30V7 KT R 404A R 507 Standard TXV Valve E E20V11 KT E30V6 KT ie R 407 Balance Port TXV po E20V12 KT R 22 R 407 Standard TXV Valve on E20V10 KT E30V5 KT Solenoid Valve B9S2 B10S2 Parts List Control Panel Miscellaneous COMPRESSOR O COMPRESSOR RUN gt LOW OIL PRESSURE FAILURE gt HIGH DISCH PRESS g FAILURE ICE FLAKER ICE FLAKER ICE FLAKER RUN 77 moron oventoaD O PUSH TO RESET LOW SUCTION PRESS PUMP DOWN Replacement Parts Ref No Description Part No 2 Light Control Panel E20T40 RL 6 Light Control Panel E20T40 SCA 1 Motor Contactor E20T44 2 Control Module E20T48 3 Transformer E20T31 4 Fuses E20T49 5 Water Pump Relay E20T45 Water Pump Relay Holder E20T46 Ice Level Control Relay E20T68 6 Ice Level Control Base 5V013 Power Switch E20T24 Ice Faker Run Green 24VAC Indicator Light RL amp SCA Panels LGX 24 Motor Overload Red 24VAC Indicator Light RL amp SCA Panels LRN 24 Compressor Run Green 230VAC Indicator Light SCA Panels LGX 2 Low Suction Pressure Pump down Amber 230VAC Indicator LAN 2 Light SCA Panels Low Oil Pressure amp High Discharge Pressure Red 230VAC LRN 2 Indicator Light SCA Panels Overload Reset Button N O E20T23 Level Control Emi
23. jo 4 w fk e gt o pra pa O ok e o ol lt G YN Water Distribution Pan The Water Distribution Pan circulates the water fed from the Water Pump down the walls of the Evaporator There are two small plastic tabs on the bottom of the Water Distribution Pan These tabs should straddle the wing of the Ice Blade to prevent it from rotating The tube exiting the Water Distribution Pan from the bottom is the Lead Spout It must always be flowing with water during normal operation and pointing perpendicular to the evaporator surface Do not plug or cap the bottom Lead Spout Side Spout Halfway HA NU bs Lead Spout Section View of Water Distribution Pan Water level in the Water Distribution Pan should be about halfway full The Side Spouts should never be starved of water 14 Water Regulating Valve Adjust the water level in the Water Distribution Pan by opening or closing the Water Regulating Valve located directly above the Water Sump Only adjust the Water Regulating Valve after the Ice Flaker has been producing ice for at least 10 minutes Drain Outlet Water exiting the Water Sump during cleaning or emptying will do so through the Drain Outlet The Drain Outlet must connect to a floor drain Make sure it is clear from restrictions and flows freely Refrigeration Operation SIMIO Piping insulation not shown Evaporato
24. n Ice Bin is full Solenoid Valve will not open Possible Cause 1 Unplugged or defective Photo Eye s Defective Level Control Relay LC1 No control power from Transformer T1 Open switch or loose wiring Defective Control Module CM Defective Emitter Photo Eye Defective Receiver Photo Eye Level Control Relay LC1 is jumped out Defective Control Module CM Defective Control Module CM Blown Fuses Defective Water Pump Relay R1 Defective Solenoid Valve Loose wiring Possible Solution Ensure Photo Eyes are properly and securely connected Place a wire jumper between terminals labeled Blue and Black it the Control Panel If Ice Flaker starts Photo Eyes may be defective and need to be replaced Place a wire jumper between terminals 5 red and 6 red at the Level Control Relay LC1 If Ice Flaker starts Level Control Relay LC1 may be defective and need to be replaced Check voltage across Term 1 purple and Term 2 yellow orange at Control Module CM If 24 VAC not present Transformer T1 may be defective and need to be replaced Place a wire jumper between Term 2 yellow orange and Term 3 red at Control Module CM If Ice Flaker starts trace voltage from Term 3 Check all wire terminals and tighten as necessary Place a wire jumper between Term 2 yellow orange and Term 3 red at Control Module CM If Ice Flake
25. nds and then Off again at Ice Flaker Control Panel This will allow cleaning solution to circulate for 30 minutes It may require several 30 minute cycles to fully clean the Ice Flaker After cleaning drain solution as shown in Step 5 except keep Stop Valve open Fill Water Sump with fresh water Turn Power Switch on for 2 3 seconds and then Off again at Ice Flaker Control Panel This will flush cleaning solution from Ice Flaker while it is being drained Continue filling Water Sump with fresh water until all cleaning solution is flushed out 31 Sanitizing Procedure 1 Mix 16 oz of household bleach with 2 gallons of warm water 90 F 115 F Pour solution into the Water Sump to the normal operating level then re circulated the sanitizing solution for approximately 20 minutes by turning on Drive Motor and Water Pump Drain solution and rinse thoroughly with fresh water at least twice following the technique described in Cleaning Procedure 10 After the Ice Flaker is thoroughly rinsed return to normal operation by opening water supply valve re adjusting Off Delay Setting and restoring refrigeration by turning the Power Switch back to On Alternate Method Substitute an approved sanitizer designed for general use in food dispensing equipment in step 1 Mix sanitizing solution according to instructions on the bottle w D e 4 O 1S c G c
26. nt m We D 4 0a O 4 om D m wn 1 O o D U Lolo ts O eb S e10 Lu Generally filtration of cold supply water is recommended Howe offers a complete line of replaceable core cartridge filter treatment systems designed to improve ice quality and extend the life of the Ice Flaker This filtration will also reduce supply water related service problems if changed at least every six months or depending upon local water conditions A dedicated 1 2 ODS copper cold water supply should be located within 4 feet of the Ice Flaker complete with hand shut off valve A 3 8 OD copper tube should connect the field installed shut off valve with the Ice Flaker water inlet connection located at the rear of the machine Drain Water Piping Requirements Ice Flaker Water Sump Drain Pitch Toward Floor Condensate Drain Pitch Toward Floor 6 Open Stand Pipe Ice Bin Drain Pitch Toward Floor A 6 Open Stand Pipe Cart Drain AirGap Minimum 1 or floor Sanitar Twice Pipe LD Sewer Drain The Drain Water Piping figure above illustrates the recommended piping to a floor sanitary sewer hub or trench drain The two vertical pipe drops should drain water through an indirect water connection with an Air Gap Code authorities having jurisdiction may dictate other indirect water connection requirements The fig
27. per E20F9 E30F8 11 Squeegee Bracket E20F11 E30F7 Ice Deflector Ice Deflector Kit Scraper E20G8 KT Scraper Backing Plate 12 Ice Deflector E20G2 13 Ice Deflector Scraper Kit rae Backing Plate E20G9 KT Lead Spout 14 Water Distribution Pan Kit Side Spouts E20H44 E30H9 Water Distribution Pan 15 Water Distribution Side Spout 7 required E20H45 E30H8 16 Water Distribution Bottom Spout E20H38 Float Valve Water Pump 17 Water Sump Kit aa i Valve E10H61 E30H7 Water Sump Covers Water Sump Gasket 18 Water Pump E10Q7 E30Q1 19 Water Float Valve E10H79 E50H18 A fel CNBHF SG 20 Compression Fitting N A BROS 21 Water Regulating Valve E10H59 22 Water Sump Cover F5H25 4 E20H10 Compression Fitting 23 Water Tube Kit a E10H67 KT Water Regulating Valve 24 Insulating Ring 2 required Top 8 Bottom E20J1 25 Water Sump Gasket E20J2 Replacement Parts Ref N D es Includ Part No ef No escription ncludes 3000 RL 6000 RL Oil Seals 26 Bearing Kit il E E20K4 Gasket Bearing Removal Tool Kit E10T1 Drive Motor 208 230 1 60 ODP N A E30M1 Drive Motor 208 230 1 60 TEFC E20M3 E30M2 Drive Motor 220 1 50 ODP E20M10 E30M3 27 Drive Motor 220 1 50 TEFC E20M15 E30M4 Drive Motor 460 3 60 ODP E20M7 E20M2 Drive Motor 460 3 60 TEFC E20M4 Drive Motor 380 3 50 ODP E20M2 E30M5 Drive Motor 380 3 50 TEFC E20M5 E30M6 28 Speed Reducer 60hz E20R4 Speed Reducer 50
28. r Pressure Regulator EPR 5 TXV Sensing Bulb Solenoid Valve 6 Evaporator Sight Glass 7 Pressure Tap Thermostatic Expansion Valve TXV 15 104 w a jo go e e m fed E e gt o pra G ken O ok e o pu G YN Evaporator Pressure Setting 4000 RL 6000 RL 30 PSI To increase the pressure setting rotate Evaporator Pressure Regulator EPR clockwise The EPR will hold the suction temperature at the proper level allowing for minor To decrease the pressure setting rotate adjustments to be made using the Thermostatic counter clockwise Expansion Valve TXV If EPR fails to regulate pressure properly it must Even though the suction temperature at the be repaired or replaced Evaporator is correct the TXV may still be underfeeding or overfeeding To ensure an accurate setting it is important to set the EPR when the ambient temperature at All EPRs are shipped loose and must be field the Rack is 10 F below the maximum rated installed The EPR should ideally be located ambient temperature within 2 feet of the Ice Flaker To read EPR setting install service manifold at the Pressure Tap of the Evaporator or at the inlet of the EPR For Globe Style EPR adjust top stem 16 Thermostatic Expansion Valve TXV Adjusting Refrigeration to the Ice Flaker Always adjust the EPR prior to adjusting the 1 Visually inspect the frost pattern on the TXV
29. r does not start Control Module CM may be defective and need to be replaced Unplug Emitter Photo Eye and wait longer than Off Delay setting If Ice Flaker stops Emitter Photo Eye may be defective and need to be replaced Unplug Receiver Photo Eye and wait longer than Off Delay setting If Ice Flaker stops Receiver Photo Eye may be defective and need to be replaced Check for a wire jumper between terminals 5 red and 6 blue at Level Control Relay LC1 If present remove wire jumper Remove wire from Term 3 red at Control Module CM and wait longer than Off Delay setting If Ice Flaker does not stop Control Module CM may be defective and need to be replaced Verify 24 VAC present across Term 1 purple and Term 3 red at Control Module CM Remove wires and check for continuity between Term 7 black and Term 8 red If the contacts remain open Control Module CM may be defective and need to be replaced Check for control voltage across FU1 fuses Replace as needed Place a wire jumper between terminals 14 black and 21 black at Water Pump Relay R1 If Solenoid Valve opens Water Pump Relay R1 may be defective and need to be replaced Verify control voltage at terminals Sol A1 and Sol A2 in the Control Panel If voltage is present Solenoid Valve may be defective and need to be replaced Check all wire terminals and tighten as necessary 35 Problem Drive Motor will
30. rings 32 Ensure Float Valve is unclogged and 13 flowing freely Verify correct Sequence of Operation of 23 Photo Eye sensors Clean and Sanitize Ice Flaker 30 Replace Water Filter Cartridge 34 Run a Field Capacity Check 18 Verify Ice Blade Clearance 25 Check Squeegee for excessive and 26 uneven wear Check Main Shaft for movement and 27 Sleeve Bearing wear e D 29 Cleaning Procedure To keep the evaporator in peak performance the Ice Flaker should be cleaned every 6 months or more often if water conditions dictate Only use cleaning solutions that are labeled as Nickel Safe mal Jeaning solution into sump to nor king level Do not ove rfill S live motor and water pump for 1 2 to 2 OVERLOAD o f ON BACK OF UNIT lsystem is clean drain cleaning solution vice 1 Turn the Power Switch Off at the Ice Flaker Control Panel 2 Open Ice Flaker Control Panel and turn Off Delay timer knob fully clockwise to 30 minutes run time 5 Open Ice Flaker Stop Valve to allow water to exit from Water Sump Afterwards close Stop Valve to prevent loss of solution i O c u fur gt 3 Removeallice from Ice Bin 6 Prepare approved cleaning solution by following manufacturer s instructions 30 10 11 Pour cleaning solution into Water Sump to a level just below the side opening Turn Power Switch On for 2 3 seco
31. s outside the rated conditions will have an effect on the Capacity 18 Electrical Operation COMPRESSOR ICE FLAKER de COMPRESSOR RUN es ICE FLAKER RUN LOW OIL PRESSURE MOTOR OVERLOAD PUSH TO RESET dis HIGH DISCH PRESS LOW SUCTION PRESS FAILURE PUMP DOWN ICE FLAKER 1 Motor Contactor M1 4 Fuses FU1 amp FU2 2 Control Module CM 5 Water Pump Relay R1 3 Transformer T1 6 Level Control Relay LC1 104 w 3 ab jo go e e oD fed E e gt 1 Term 1 24V Input Power 7 Term 7 Solenoid Valve Contact 2 Term 2 24V Input Power 8 Term 8 Solenoid Valve Contact 3 Term 3 Control Signal 9 Off Delay Setting 4 Term4 Motor Overload Reset 10 Motor Overload Setting 5 Term5 Motor Overload Switch Leg 11 Overcurrent Condition Indicator Light 6 Term 6 Ice Flaker Run Switch Leg 12 Overload Sensing Coil 19 o pra p O ol e o a lt G YN Level Control Relay LC1 This relay processes the signal from the Photo Eyes It shuts the Ice Flaker off when the Ice Bin is full to prevent damage caused by ice backing up into the evaporator section Motor Contactor M1 This relay provides power to the Drive Motor the Water Pump and the Solenoid Valve It features a manual override button which when depressed will engage the relay contacts even when the relay coil is not energized Transformer T1 This provides 24 volt control po
32. sed through the line at low pressure to prevent scaling and oxidation inside the tubing 6 Use only a suitable silver solder alloy on suction and liquid lines Field Wiring All field wiring must be in compliance with local and national codes Use only copper conductors of the appropriate size An electrical Control Panel is shipped loose with all Ice Flakers and should be wall mounted near the Ice Flaker for easy access 1 Install disconnect not supplied by factory 2 Connect power to the terminals marked L1 and L2 in the Control Panel 3 Connect the following between the Control Panel and the Junction Box at the Ice Flaker Drive T1 Driv 1 Motor T2 Driv 2 Water T1 Pump 3 Pump T2 Pump 4 Solenoid Sol A1 5 Valve Sol A2 6 Rib HTRA1 7 Heaters HTR A2 8 Rib Heaters are an optional feature and may not be present 4 Make sure the wire jumper between the terminals marked A and B in the Control Panel is secure 5 Connect the leads from the Photo Eye sensors to the terminals mark Blue Black and Brown in the Control Panel see p 22 Leak Testing After all refrigerant connections are made the entire system must be leak tested The complete system should be pressurized to no more than 150 psig with refrigerant and dry nitrogen or dry CO3 It is recommended that this pressure be held for a minimum of 12 hours and then rechecked For a satisf
33. seeescusecceacesseeesseeeeesssoeseeees 12 Water Operation acentos 12 Refrig eratiom Operation sas u u mm a a q a B a aq k aan aa 15 Electrical Operation Mechanical Operation Start Up Checklist Su A T MAINTENANCE u u a iia 29 Preventative Maintenan e Schedule u u uu u u ae aT a Tarar E ar aaa aas Ee an qasasqa saa Ni S u u ias ss 29 Ed AAA A ON ON 30 Sanitizing POCO Oi cucianciii A e ea EE AAA 31 UDC ON a Ka haw asuy Water Filtration TROUBLESHOOTING 0csscccssssscccccssscccscssceccscssceseecssesseeeesesseneeessseeeseseseeeeeesseeecesssauensseseceesessouen sees 35 APPENDIX G 38 IMPORTANT THE INFORMATION FOUND IN THIS MANUAL IS INTENDED FOR USE BY INDIVIDUALS POSSESSING EXPERIENCED BACKGROUNDS IN ELECTRICAL REFRIGERATION AND MECHANICAL REPAIR AND MAINTENANCE ANY ATTEMPT TO REPAIR OR ALTER THIS EQUIPMENT MAY RESULT IN PERSONAL INJURY OR PROPERTY DAMAGE THE MANUFACTURER IS NOT RESPONSIBLE FOR THE INTERPRETATION OF THE INFORMATION CONTAINED HEREIN NOR HAS THE MANUFACTURER ASSUMED ANY LIABILITY IN CONNECTION WITH ITS USE THE MANUFACTURER IS NOT RESPONSIBLE FOR ANY LOSS DAMAGE OR INJURY CAUSED AS A RESULT OF EITHER 1 ANY REPAIR OR REPLACEMENT TO THE MANUFACTURER S EQUIPMENT THAT IS DONE BY A THIRD PARTY NOT PREVIOUSLY APPROVED BY THE MANUFACTURER OR II ANY REPAIR OR SERVICE WORK PERFORMED ON ANY OF THE MANUFACTURER S EQUIPMENT WHICH DOES NOT STRICTLY FOLLOW THE PROCEDURES SET FORTH HEREIN Engineering G
34. ternative to replacing parts such as the Sleeve Bearings in the field 27 Va w ba jo go e jo 4 w fk e gt Start Up Checklist 1 Isthe operating water level in the Water Sump correct see Float Valve p 13 2 Is the operating water level in the Water Distribution Pan correct see Water Distribution Pan p 13 3 Isthe Stop Valve on Sump Drain connection closed see Stop Valve p 13 4 Is the Suction Temperature at the Evaporator correct see Evaporator Pressure Setting p 16 5 Have you visually inspected the freezing surface of the Evaporator see Adjusting Refrigeration to the Ice Flaker p 17 6 Have you run a Field Capacity Check see Field Capacity Check p 18 7 Have you set the Off Delay Setting on the Control Module see Off Delay Setting p 21 8 Have you set the Motor Overload Setting on the Control Module see Motor Overload Setting p 21 9 Have you verified proper Sequence of Operation by the Photo Eye sensors see Sequence of Operation p 23 10 Have you verified proper rotation by the Gear Motor or Drive Motor see Drive Motor and Speed Reducer p 26 11 Have you completed and returned the Ice Flaker warranty registration Cc G L 0 e od L G 9 28 Maintenance Preventative Maintenance Schedule Page Every 3 Every 6 Every 12 Number Months Months Months Lubricate Sleeve Bea
35. tter E20T104 NP Level Control Receiver E20T105 NP Replacement Filter Cartridge E10H57 Replacement O Ring E10H63 Filter Wrench SW 4 Ice Machine Cleaner Nickel Safe E10V1 Ice Machine Sanitizer E10V31
36. ttom Casting 25 Ice Blade The Ice Blade shatters the ice formed on the Evaporator freezing surface as the Main Shaft rotates Ice harvesting problems are often caused by improper refrigeration settings Adjusting the Ice Blade should be a last resort after all other means have been expended The clearance between the outermost tip of the Ice Blade and the Evaporator freezing surface must be between 0 004 and 0 006 MINIMUM 0 004 MAXIMUM 0 006 LOCKING SCREWS SCREWS ADJUSTMENT SCREWS Y 7 7 7 U U 7 U 7 7 7 U 7 U 7 7 7 7 7 7 2 Z DOGS AD res A set of feeler gauges should be used to determine the distance between the Ice Blade and the Evaporator Always check the clearance at a minimum of 6 points on the circumference of the Evaporator The Auxiliary Ice Scrapers located at the top and bottom of the Ice Blade remove any ice forming in those areas The clearance of the Auxiliary Ice Scraper should be the same or slightly greater than the Ice Blade e L 0 e o L G 94 Squeegee The Squeegee wipes excess water from the freezing surface so that the ice is dry upon production The Squeegee must be in full contact with the evaporator freezing surface Having a Squeegee not in contact with the freezing surface will create wet ice which causes drag on the Ice Blade This puts greater stress on the Sleeve Bearings and causes
37. u G Lubrication Speed Reducer Lubrication All speed reducers are to be filled with Mobil Glygoyle 460 Lubricant only When adding or changing oil for any reason it should be remembered that oils of various types are not compatible with Mobil Glygoyle 460 Proper oil level is maintained to the Allen head setscrew on the horizontal center line of the Speed Reducer Oil should drain out when setscrew is removed Add oil through top Allen head screw opening until oil seeps out of centered screw opening Do not overfill Sleeve Bearing Lubrication The bearings should be greased annually using USDA approved food grade edible grease Typically only one squirt of the grease gun is required or until you feel resistance on the pump Use caution to ensure the bearings is not over greased 32 Over greasing may pop the seal out of its normal position If over greased and the seal is popped out of position the excess grease will need to be removed prior to re installing the seal If seal is damaged due to over greasing it may need to be replaced Water Filtration The purpose of water filtration is to keep the Ice Flaker clean and operating efficiently The value to the user is reduced operating cost due to less maintenance improved performance and a greater return on investment as result of extended asset life There are three primary categories of contaminants that damage and cause the
38. uidelines Location Requirements Howe Rapid Freeze Ice Flakers are designed to operate in ambient room temperatures between 50 F and 100 F 50 F 100 F The Ice Flaker warranty is void if it is installed in ambient room temperatures below 50 F The Ice Flaker must be located above a sanitary sewer floor drain hub or trench drain to ensure proper drainage to the floor Many designers slope floors to the sanitary sewer inlets to manage these wet areas If installing the Ice Flaker with a Howe Ice Bin ensure that the bin is adequately secured to the floor so as to prevent the assembly from tipping when empty Electrical Requirements A dedicated 15 amp power supply from a field furnished and installed disconnect switch is required for each Ice Flaker Water Supply Requirements Cold water supply to the Ice Flaker must be totally separate and unaffected by any local hot water supply This cold water supply must be within the range of 45 F to 90 F 45 F 90 F The cold water supply pressure must be within a 20 PSIG to 60 PSIG range 20 PSIG 60 PSIG Straight Reverse Osmosis RO treated water should never be supplied to the Ice Flaker RO system treated water is aggressive toward metals and plated surfaces In addition RO water will affect the life and integrity of rubber and plastic material Ice Flaker components If only RO water is available Post RO treatment must be provided to raise pH and mineral conte
39. ulated with closed cell flexible elastomeric foam thermal insulation intended for cold applications Liquid lines should be covered with 1 2 thick and suction lines with 3 4 thick material The insulation material should be moisture vapor resistant when correctly installed according to the manufacturer s instructions The field installed Evaporator Pressure Regulator EPR valve and Suction Line Heat Exchanger must likewise be insulated If these system components are left un insulated they become thermal bridges and unwanted condensation and ice will form and drip All butt joints and seams must be properly field fabricated according to the insulation manufacturer s fusing adhesive instructions Self adhering closed cell foam insulation is also available in rolls and can be used to supplement the conventional tubular materials on irregular shapes EPR valves and caps m We oO 4 eje Ta 4 D m wn e s 2 ie U LL Field Installation Safetv Information and Guidelines Only qualified service technicians should attempt to install service or maintain the Ice Flaker Make sure all power sources are disconnected before anv service work is done to the Ice Flaker All field wiring must conform to the requirements of the equipment and all applicable local codes and national codes Inspection Upon receipt check all items against the bill of lading
40. ure depicts two separate drain lines which are required to ensure the Ice Flaker does not inadvertently flow Water Sump Drain water into the Ice Bin or Carts in the event of a backup or any other malfunction Refrigeration Requirements 4000 RL 6000 RL 36 000 BTU hr 54 000 BTU hr Refrigeration requirements are based on operating the Ice Flaker with 70 F supply water and 90 F ambient air conditions Refrigeration requirements and or capacity will vary with temperatures outside these conditions Parallel Compressor Rack Systems The design saturated evaporator temperature of the Ice Flaker requires connection to a low temperature remote parallel compressor rack system or Rack The liquid and suction header refrigeration load station stubs serving the Ice Flaker should be equipped with ball shut off valves only No liquid line solenoid valves or suction pressure regulating valve of any type should be assigned to the Ice Flaker at the Rack A solenoid valve comes installed at the Ice Flaker Howe ships loose the appropriate Evaporator Pressure Regulator EPR valve and Suction Line Heat Exchanger that must be field installed in accordance with the Suggested Refrigerant Piping Diagram on the following page The Ice Flaker should always be assigned to the liquid header station closest to the main liquid feed from the refrigerant receiver An alternate solution is to install a 5 8 liquid stub directly teed from t
41. wer to the Control Module Motor Relay and indicating lights Water Pump Relay R1 This relay closes the Solenoid Valve in the event that power is unexpectedly lost to the Water Pump Fuses FU1 amp FU2 The FU1 fuses control the Water Pump and FU2 fuses control the Rib Heaters FU2 fuses may not be present if the Ice Flaker is not equipped with the Low Ambient Kit option Ice Flaker Run Indicator Light This is lit green during Normal Operation Motor Overload Indicator Light This is lit amber when Ice Flaker is in Overload Condition The Reset Button is a normally open switch which resets the circuit after an Overload Condition 20 Control Module CM The control Module features eight wire terminals two adjustable dials and one indicating light It operates in one of three main modes e Normal Operation e Off Delay Cycle e Overload Condition Normal Operation Normal Operation begins when the Control Module senses voltage at the Control Signal Term 3 During Normal Operation voltage is present at Ice Flaker Run Switch Leg Term 6 and the Solenoid Valve Contacts Term 7 amp 8 are closed Off Delay Cycle The Off Delay Cycle begins when voltage is removed from the Control Signal Term 3 The length of the Off Delay Cycle is determined by the blue Off Delay Setting dial The increments are in minutes with 1 being the lowest possible setting and 30 being the highest During the Off Delay
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