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Service Manual 10/28/2011

1. TREFN FERF YFC FF 42 42 3 Evacuation and Recharge R 404 A ARAF yR 42 B Important Notes for Component 1 41 43 1 er 45 2 Removal and Replacement Of Cutter w sa dila ai a Ra RADAR 45 3 Removal and Replacement of Extruding 5552 22 46 4 Removal and Replacement of Auger y a yaba aun Ra AN k ko Lia R RAR a ek 46 5 Removal and Replacement of 47 6 Removal and Replacement of Mechanical Seal and Lower Housing 48 7 Removal and Replacement of Gear Motor 49 VIL rising tc GO Ynn NN pass ae 51 A Cleaning and Sanitizing Instructions ARON A Gi p n 51 Ee insiste Dc dna aa 51 2 Cleaning Procedure E 51 SE ANNO AN EE 53 4 Sanitizing Procedure Initial sessirnar 53 5 Sanitizing Procedure bala kd 54 Gate 56 C Preparing the Icemaker for Periods of Non Use ENEE bf Vk DIS PO SA OcC os 59 Important Safety Information Throughout this manual notices appear to bring your attention to situations which could result in death serious injury damage to the appliance or damage to property 4 WARNING Indicates a hazardous situation which could result in death or serious injury NOTICE Indicates a situation which could result in damage to the appl
2. See IV E Float Switch Check b Defective and Cleaning Ice Purge Cycle 1 Control Board a No power to gear motor b No power to gear motor protect relay circuit 2 Gear Motor a Blown fuse b Internal protector open c Gear motor winding open Mechanical failure 38 3 Gear Motor Protect Relay X1 relay defective 3 Pump Down Solenoid Valve a Open coil 4 Magnetic Contactor Open coil Contacts sticking 5 Control Low Pressure Switch a Refrigerant pressure too low Out of adjustment or defective 6 Safety Low Pressure Switch a Refrigerant pressure too low manual reset Defective 7 High Pressure Switch Dirty condenser Ambient temperature too warm Fan motor not operating 8 Condensing Unit Fan Motor Magnetic contactor contacts bad or coil winding open Bearing worn out or locked rotor Capacitor defective 9 Compressor Magnetic contactor contacts bad or coil winding open Motor winding open Start capacitor or run capacitor defective Start relay contacts bad or coil winding open 10 Evaporator Damaged or defective TL Expansion Valve TXV ee RR Low 13 Drain Valve Dirty leaking by 39 B r 87X9Xx 1 Float Svvitch a Dirty sticking 2 inier Water Valve 3 Water Supply 4 Contro Board Shutdown T nfrared Sensor Bin Contro 2 Mechanical Backup Bin Control 6 Contro Board 40 V Removal and Replacement of Compon
3. 3 18 c Drain Frequency Control S1 dip switch 4 s r LA LA AAA koka kk sa ase kass 19 d Continuous Dispensing Timer S1 dip switch 5 amp 6 19 e Bin Control Selector 51 19 f Mechanical Bin Control Shutdown Delay S1 dip switch 8 20 a Factory Use S1 Dip Switch 9 amp DL RO RAA FA d e 20 D Power and Control Wii a A kk RO 20 1 Power IC cr 20 2 Control SDU 20 UL TECHNICAL IGF al s na t RR FD TF FF FUN a EFE FU TR UR FR SN 21 A Water Circuit and Refrigeration C iroli aaa 21 B Wining DI ele 22 US 1010 alee sa o o nr NN WN CNAU 22 Z ORG TA P MIRI 23 EUR 1221 r ri o a santt kk batan bi e ba a Y S 24 IV Service Ee ee 25 Alea ee tee Ee Ve 25 B Diagnostic PEOCES VE za no ik a kk a a na a OAN GAN iw AO 25 C Control Board OhnEEk v n d s balaban FFF DEG GEa p RYN 30 Di Bin Gontrol Check abba xaxaxa daaa ay ya ay d n 33 e AEA SAN SON CHECK NET 33 2 Mechanical Backup Bin Control CMG CK E 34 E Float Switch Check and Cleaning d Dossenus ako kite O OO 36 Floal SWEN need RYN FR PRYNU EF EFE 36 2 eene E ne D 36 E Ulannosit en 38 V Removal and Replacement of Components 2 2 41 A Service Tor Refrigerant E TE 41 1 Retrigerant RECOV GUY EY
4. After the IS yellow LED turns on flashing or steady IS shutdown delay timer starts See II C 3 b Infrared Sensor Shutdown Delay S1 dip switch 1 2 3 Comp and FMRs should de energize immediately after the shutdown delay timer terminates Five minutes later GM should de energize Diagnosis If the IS yellow LED is not on after covering the lens replace IS If the unit remains on after IS shutdown delay timer terminates and the 5 minute ice purge timer terminates replace CB If IS fails to shut down the icemaker and the level of ice activates MBC the icemaker shuts down within 10 seconds of MBC opening and a 9 beep alarm sounds To reset move the power switch to the OFF position and then back to the ON position 33 9 Remove the object covering IS If you removed IS housing from the base replace it in its correct position and secure it with the thumbscrew 10 Move the power switch to the OFF position Unplug the icemaker from the electrical outlet then proceed to IV D 2 Mechanical Backup Bin Control Check Infrared Sensor LED Infrared Sensor Thumbscrew Infrared Sensor LED aa Infrared Sensor Housing Fig 3 f n Lens 2 Mechanical Backup Bin Control Check When the actuator paddle is not engaged MBC is closed and the icemaker produces ice a Mechanical Backup Bin Control S1 dip switch 7 placed in the ON position MBC is used as a backup bin control safety When ice fills the chute and engages the actuator
5. Do not place fingers or any other objects into the ice discharge opening SRC 14H Electrical connection must be hard wired and must meet national state and local electrical code reguirements Failure to meet these code reguirements could result in death electric shock serious injury fire or severe damage to equipment This remote condensing unit reguires an independent power supply of proper capacity See the nameplate for electrical specifications Failure to use an independent power supply of proper capacity can result in a tripped breaker blown fuse damage to existing wiring or component failure This could lead to heat generation or fire THIS UNIT MUST BE GROUNDED Failure to properly ground the remote condensing unit could result in death or serious injury Lockout Tagout to prevent the power supply from being turned back on inadvertently NOTICE Follow the instructions in this manual carefully to reduce the risk of costly water damage n areas where water damage is a concern install in a contained area with a floor drain nstall the icemaker in a location that stays above freezing Normal operating ambient temperature must be within 45 F to 1009F 7 C to 38 C Do not leave the icemaker on during extended periods of non use extended absences or in sub freezing temperatures To properly prepare the icemaker for these occasions follow the instructions in V I C Preparing the Icemaker for Per
6. Move the control switch to the ICE position 16 Plug the unit into the electrical outlet then move the power switch to the ON position to start the automatic icemaking process 17 Replace the front panel in its correct position 50 VI Maintenance This icemaker must be maintained in accordance with the instruction manual and labels provided with the icemaker Consult with your local Hoshizaki Certified Service Representative about maintenance service 4 WARNING Only qualified service technicians should service this icemaker e CHOKING HAZARD Ensure all components fasteners and thumbscrews are securely in place after any cleaning or maintenance is done to the unit Make sure that none have fallen into the dispenser unit storage bin A Cleaning and Sanitizing Instructions Hoshizaki recommends cleaning and sanitizing this unit at least twice a year More freguent cleaning and sanitizing however may be reguired in some existing water conditions A WARNING To prevent injury to individuals and damage to the icemaker do not use ammonia type cleaners Carefully follow any instructions provided with the bottles of cleaning and sanitizing solution Always wear liquid proof gloves and goggles to prevent the cleaning and sanitizing solutions from coming into contact with skin or eyes After cleaning and sanitizing do not use ice made from the cleaning and sanitizing solutions Be careful not to leave any s
7. S1 dip switch 7 in the ON position Comp and GM de energizes within 10 seconds and CB sounds a 9 beep alarm S1 dip switch 7 in the OFF position Comp and GM de energize within 10 seconds Diagnosis If MBC does not open or the icemaker continues to make ice check that the actuator paddle is moving freely Confirm that the actuator paddle is engaged Check for continuity across MBC wires If MBC contacts are found open and the icemaker continues to make ice CB is bad and must be replaced If MBC is closed with the actuator paddle engaged MBC is bad and must be replaced 8 Move the power switch to the OFF position then unplug the unit from the electrical outlet 9 Replace the chute assembly and strap in their correct positions 10 Replace the control box cover and top panel in their correct positions 12 13 Replace the front panel in its correct position 11 Plug the unit into the electrical outlet Move the power switch to the ON position to start the automatic icemaking process Legend CB control board Comp compressor GM gear motor IS infrared sensor MBC mechanical backup bin control 35 E Float Switch Check and Cleaning 1 Float Switch Check 1 Remove the front panel then move the power switch to the OFF position 2 Move the control switch to the DRAIN position 3 Move the power switch to the ON position 4 Allow the water to drain from the evaporator then move the power switch to th
8. green indicate which relays and connector pins are energized e COMP LED X1 Relay X1 Relay Terminals 115VAC F A Control Board e K9 Connector 5VDC 1 2 Control Switch Open Icemaking Closed Drain 3 4 Jumper 5 6 Gear Motor Protect Relay Circuit e GM LED X2 Relay K1 Connector Pins 2 3 115VAC e FLUSH drain LED X3 Relay K2 Connector Pin 10 e VVTRIN LED X4 Relay K2 Connector Pin 8 e K1 Connector 1 Open L 2 GM LED Gear Motor and Evaporator Heater it 3 Power Supply Input 115VAC 5 e K2 Connector 50 1 through 6 Open 7 Control Transformer 24VAC input 8 WTRIN LED nlet VVater Valve o 9 Control Transformer NILA 470 4510 TOLL 24VAC input 10 FLUSH drain LED Drain Valve Water Dispensing Valve Agitation Motor and Ice S2 SERVICE Button Ice Purge Cycle Bypass K8 Connector 1 Control Transformer 24VAC input 2 Control Transformer 24VAC neutral 3 4 Mechanical Backup Bin Control 5VDC 5 Float Switch Common 5VDC 6 Upper Float Switch 7 Lower Float Switch 8 Open K7 Connector Open POWER OK LED green lights when 24VAC
9. on To bypass the Ice Purge Cycle press the SERVICE button on CB after the GM LED turns on WARNING Risk of electric shock Care should be taken not to touch live terminals When COMP LED is on 115VAC is present between CB X1 relay dark blue DBU wire and a neutral W wire PDS energizes Diagnosis Check for 115VAC from CB X1 relay dark blue DBU wire to a neutral W wire If 115VAC is not present check X1 relay brown BR wire to a neutral W wire If 115VAC is present on X1 relay brown BR wire and not on X1 relay dark blue DBU wire replace CB 8 Refill VVTRIN LED is on See 5 Fill VVTRIN LED is on above Legend CB control board EH evaporator heater F S float switch FT fill timer 90 second low water safety timer FZT freeze timer 30 minute freeze safety timer GM gear motor GMPR gear motor protect relay IS infrared sensor LF S lower float switch MBC mechanical backup bin control PDS pump down solenoid valve UF S upper float switch WV inlet water valve 32 D Bin Control Check 1 Infrared Sensor Check IMPORTANT Make sure S1 dip switch 7 is in the ON position This allows the control board to monitor the infrared sensor along with the mechanical backup bin control 1 Remove the front panel 2 Move the power switch to the OFF position then unplug the unit from the electrical outlet 3 Remove the control box cover and access CB Confirm that S1 dip switch 1 2 3 are in
10. paddle MBC opens and CB shuts down the icemaker within 10 seconds and sounds a 9 beep alarm b Stand Alone Mechanical Bin Control S1 dip switch 7 placed in the OFF position MBC is used as a stand alone bin control The stand alone application should only be used in Hoshizaki standard ice storage bin applications WARNING Do not place S1 dip switch 7 in the OFF position on dispenser unit applications When ice fills the chute and engages the actuator paddle MBC opens and CB shuts down the icemaker within 10 seconds 1 Remove the front panel 2 Move the power switch to the OFF position then unplug the unit from the electrical outlet 3 Remove the strap connecting the spout to the chute assembly See Fig 4 Pull up the chute assembly slightly so that you can access the actuator paddle located in the top of the chute 4 Plug the unit into the electrical outlet 5 Move the power switch to the ON position to start the automatic icemaking process Strap a fa Proximity Switch Actuator Paddle an MP Assembly B o Fig 4 34 6 Make sure CB GM LED is on There is a delay of at least 30 seconds before CB GM LED turns on after power up After CB GM LED turns on press CB SERVICE button to bypass the 5 minute ice purge cycle WARNING Risk of electric shock Care should be taken not to touch live terminals CB COMP LED turns on 7 Press the actuator paddle located in the top of the chute
11. range and turns steady as ice nears After IS yellow LED turns on flashing or steady IS shutdown delay timer S1 dip switch 1 2 3 starts For a typical dispenser unit application a 100 second shutdown delay is recommended When used with a standard Hoshizaki storage bin any shutdown delay setting is acceptable See II C 3 b Infrared Sensor Shutdown Delay S1 dip switch 1 2 3 Once IS shutdown delay timer terminates PDS de energizes and the 5 minute ice purge timer starts Unit is in pump down mode When the refrigerant low side pressure drops to 9 PSIG CLPS opens MC de energizes de energizing Comp and FMRs When the 5 minute ice purge timer terminates GM GMPR and EH de energize Note If IS fails to shut down the icemaker MBC opens CB shuts down the icemaker and sounds a 9 beep alarm Mechanical Backup Bin Control MBC opens actuator paddle engaged CB shuts down the icemaker within 10 seconds and sounds a 9 beep alarm Diagnosis See IV D Bin Control Check Legend CB control board CCH crankcase heater CLPS control lovv pressure switch Comp compressor DV drain valve EH evaporator heater FMRs fan motors remote FT fill timer 90 second low water safety timer FZT freeze timer 30 minute freeze safety timer GM gear motor GMPR gear motor protect relay GMR gear motor relay HM headmaster HPS high pressure switch IS infrared sensor LF S lower float switch MC magnetic contactor MBC mechanical backup
12. the proper position for your application See II C 3 b Infrared Sensor Shutdown Delay S1 dip switch 1 2 3 4 Confirm that IS is connected to CB K6 connector Wipe down the IS lens with a clean warm damp cloth If the bottom of the icemaker is not accessible in your application remove the thumbscrew securing the IS housing then remove the housing from the base See Fig 3 5 Make sure the control switch is in the ICE position then plug the icemaker into the electrical outlet 6 Move the power switch to the ON position to start the automatic icemaking process Check that the IS green LED is on The IS green LED confirms 20VDC from CB to IS and remains on constantly Diagnosis If the IS green LED is not on confirm 20VDC at CB K6 connector pin 1 DBU wire to CB K6 connector pin 3 BR wire If 20VDC is present and the IS green LED is off replace IS If not see step 3 IS Power Supply under IV C Control Board Check 7 Make sure CB GM LED is on There is a delay of at least 30 seconds before CB GM LED turns on after power up After CB GM LED turns on press CB SERVICE button to bypass the 5 minute ice purge cycle WARNING Risk of electric shock Care should be taken not to touch live terminals 8 GM and COMP LEDs are on Use an object to cover IS lens The IS yellow LED on IS turns on flashing or steady The IS yellow LED flashes when ice is at the outer limit of its range and turns steady as ice nears
13. the reverse order of which they were removed 19 Replace the top and side panels in their correct positions 20 21 Move the control switch to the ICE position Plug the unit into the electrical outlet then move the power switch to the ON position to start the automatic icemaking process 22 Replace the front panel in its correct position 7 Removal and Replacement of Gear Motor 1 Remove the front panel then move the power switch to the OFF position 2 Move the control switch to the DRAIN position 3 4 5 Move the power switch to the OFF position then unplug the unit from the electrical outlet Move the power switch to the ON position Allow the water to drain from the evaporator 6 Remove the top and side panels 7 Remove the strap connecting the spout to the chute assembly then remove the spout 8 Remove the hex head bolts and washers securing the lower housing to the gear motor Lift the evaporator up slightly 9 Remove the socket head cap screws with split lock washers securing the gear motor 10 Disconnect the gear motor wiring then remove the gear motor 11 Remove the gear motor bracket and spline coupling from the old gear motor and place on the new gear motor 12 Install the new gear motor and reconnect the electrical wires 13 Replace the removed parts in the reverse order of which they were removed 14 Replace the top and side panels in their correct positions 49 15
14. the spout Remove the extruding head seal bolts Using the cutter lift out the auger assembly 10 Install the new auger 11 Replace the removed parts in the reverse order of which they were removed 12 Replace the top and side panels in their correct positions 46 13 Move the control switch to the ICE position 14 Plug the unit into the electrical outlet then move the power switch to the ON position to start the automatic icemaking process 15 Replace the front panel in its correct position 5 Removal and Replacement of Evaporator NOTICE Always install a new drier every time the sealed refrigeration system is opened Do not replace the drier until after all other repair or replacement has been made Install the new drier with the arrow on the drier in the direction of the refrigerant flow When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 1 Remove the front panel then move the power switch to the OFF position 2 Move the control switch to the DRAIN position 3 Move the power switch to the ON position 4 Allow the water to drain from the evaporator 5 Move the power switch to the OFF position then unplug the unit from the electrical outlet 6 Remove the top and side panels 7 Recover the refrigerant and store it in an approved container 8 Remove the strap connecting the spout to
15. water supply line shut off valve to supply water to the reservoir 17 After the gear motor starts remove the front panel Move the power switch to the OFF position Move the control switch to the DRAIN position then move the power switch back to the ON position Replace the front panel in its correct position 18 Allow the water system to drain for 5 minutes Note If you do not sanitize the unit go to step 14 in III A 5 Sanitizing Procedure Final 19 Remove the front panel Move the power switch to the OFF position then unplug the unit from the electrical outlet Close the water supply line shut off valve 52 3 Sanitizing Solution IMPORTANT For safety and maximum effectiveness use the solution immediately after dilution Dilute 2 5 fl oz 74 ml or 5 tbs of a 5 2596 sodium hypochlorite solution chlorine bleach with 5 gal 19 1 of warm water 4 Sanitizing Procedure Initial 1 Make sure the power switch is in the OFF position the unit is unplugged from the electrical outlet and the water supply line shut off valve is closed Remove the panels 2 Remove the strap connecting the spout to the chute assembly then remove the spout Remove the rubber O ring and nylon O ring at the top of the cylinder and also remove the packing and drip guide between the spout and chute 3 Pour the sanitizing solution over the extruding head until the evaporator assembly and the reservoir are full and the solution s
16. white K5 connector pin closest to CB red K4 connector to CB K8 connector pin 5 BK wire common 5VDC is present to CB K8 connector pin 6 R wire upper and pin 7 DBU wire lower when the F S is open Diagnosis If 5VDC is not present at CB K8 connector pin 5 BK wire replace CB For further F S diagnostics see IV E Float Switch Check and Cleaning 5 Fill VVTRIN LED is on When LF S opens FZT terminates FT starts and the WTRIN LED turns on The WTRIN LED turns off once UF S closes 24VAC is present at CB K2 connector pin 8 W BR wire to any neutral LBU wire when LF S is open Diagnosis If LF S is open and WTRIN LED is off confirm LF S status See IV E Float Switch Check and Cleaning If LF S is open and VVTRIN LED is off replace CB If WTRIN LED is on and 24VAC is not present from CB K2 connector pin 8 W BR wire to a neutral LBU wire confirm 24VAC from CB K2 connector pin 19 W R wire to a neutral LBU wire If 24VAC is present on CB K2 connector pin 9 and not on CB K2 connector pin 8 replace CB 6 Ice Purge Cycle GM LED is on GM LED is on GM and EH energize Diagnosis If GM LED is on and GM and EH are off check for 115VAC from CB K1 connector pin 2 W BK wire to a neutral W wire If 115VAC is not present check for 115VAC from CB K1 connector pin 3 BR wire to a neutral W wire lf 115VAC is present on pin 3 and not on pin 2 replace CB 7 Freeze Cycle GM and COMP LED are
17. 7 li 9pIS M07 A BA d i Co W ism jeug ureJq ki NOLH AQ 200 oun Ajddns eur uonons A eur pinbr Joyerodeng 492M Eu Jost 19497 JeleM E jeurens 7 E 4 T AS HEEN Hr SIE A dun o UMOQ dulfici uoisuedxy YMS 1EO1 I o CLE SJO1OJ N UB4 H YAN out 3 Ti Hd p leiseupeoH HtL OuS 9 H IINO0SL SJ o L Wi o LL E A Water Circuit and Refrigeration Circuit 21 B Wiring Diagrams 1 FS 1500MLH C 115 1 L ER SWITCH EAR MOT LENOI TECT RELA AL 144 49 rd B
18. 70F conductivity 200 pS cm N A 90 70 F 70 50 F 2122 4 51 2097 3 75 FS 1500MLH C amp SRC 14H 467 0 82 509 0 96 FS 1500MLH C ONLY 140 12 0 179 12 0 30 x16 5 x33 765x418x836mm Stainless Steel Galvanized Steel Rear Net Ib 182 83 kg Shipping Ib 222 101kg Cord Connection Inlet 1 2 FPT Outlet 3 4 FPT Suction line 1 1 16 12 10 PARKER Liquid line 5 8 18 6 PARKER Auger Type Direct Driven Auger 1 2HP Gear Motor Float Switch Photoelectric Sensor Mechanical Bin Control and Timer Air Cooled Remote Condensing Unit SRC 14H Copper Tube on Cylinder Thermostatic Expansion Valve Headmaster C P R in SRC 14H 190 PSIG R 404A 11 Ib 5000 g Ice Maker O Ib 4 oz 100 g Remote Condensing Unit 10 Ib 12 oz 4900 g High 427 PSIG Low 190 PSIG 1A Fuse and High Voltage Cut Out internal 7A Fuse Auto Reset High Pressure Switch Manual Reset Low Pressure Switch in SRC 14H Float Switch and Timer Gear Motor Spare Fuse 2 Dispenser Unit or Ice Storage Bin Remote Condensing Unit SRC 14H VOLTAGE RANGE 104 127VAC AMBIENT TEMP FS 1500MLH C 45 100 F SRC 14H 4 122 F WATER SUPPLY TEMP 45 90 F WATER SUPPLY PRESSURE 10 113 PSIG Note We reserve the right to make changes in specifications and design without prior notice B Condensing Unit 1 SRC 14H AC SUPPLY VOLTAGE COMPRESSOR FAN MOTOR EACH OTHER MAXIMUM FUSE SIZE MAX HACR BREAKER USA ONLY MAX CIRC BREAK
19. AC If 115VAC is not present on either L1 or L2 check incoming power supply If 115VAC is present on both L1 and L2 and Comp does not start check MC T1 BK wire to MC T2 R wire for 208 230VAC If 208 230VAC is not present replace MC If 208 230VAC is present check Comp start relay start capacitor run capacitor and Comp motor windings If FMRs do not energize check MC T3 DBU wire to a neutral W wire for 115VAC If 115VAC is present and FMRs do not energize check FM capacitors and motor windings If 115VAC is not present replace MC 10 Refill Cycle GM COMP and VVTRIN LEDs are on LF S and UF S are open WV energizes GM GMPR EH PDS MC Comp and FMRs continue LF S closes Nothing happens at this time Reservoir continues to fill until UF S closes When UF S closes FT terminates and FZT starts WV de energizes If UF S remains open longer than 90 seconds after LF S opens FT exceeded and CB sounds a 1 beep alarm WV remains energized until UF S closes Alarm resets automatically when UF S closes Diagnosis Confirm that the water level has dropped and the UF S and LF S are open See IV E Float Switch Check and Cleaning Check that WTRIN LED is on If LF S is open and WTRIN LED is off replace CB If VVTRIN LED is on check that the reservoir fills If not check water supply line shut off valve water filters and WV screen If WTRIN LED is on and WV is off check CB K2 connector pin 8 W BR wire to a neut
20. B OVDC is present from CB K9 connector pin 1 W BK wire to CB K9 connector pin 2 W BK wire b Gear Motor Protect Relay GMPR CB K9 connector pins 5 and 6 W O wires When GMPR terminals 3 and 4 are open GMPR de energized 5VDC is present from CB white K5 connector pin closest to CB red K4 connector to CB K9 connector pin 5 W O wire If 5VDC is not present replace CB When GMPR terminals 3 and 4 are closed GMPR energized 5VDC is present from CB white K5 connector pin closest to CB red K4 connector to CB K9 connector pins 5 and 6 W O wires Also check from CB K9 connector pin 5 W O wire to CB K9 connector pin 6 W O wire If OVDC is present GMPR terminals 3 8 5 are closed If 5VDC is present GMPR terminals 3 8 5 are open and CB may be in an 8 beep alarm See II C 2 LED Lights and Audible Alarm Safeties c Mechanical Backup Bin Control MBC CB K8 connector pins 3 and 4 GY wires When MBC is closed calling for ice 5VDC is present from CB white K5 connector pin closest to CB red K4 connector to CB K8 connector pin 3 and 4 GY wires Diagnosis If 5VDC is not present to either pin replace CB If 5VDC is present to pin 3 GY wire and not to pin 4 GY wire MBC is open See IV D 2 Mechanical Backup Bin Control Check 31 d Float Switch LF S and UF S CB KS connector pin 5 BK wire common 6 R wire upper and 7 DBU wire lower 5VDC is always present from CB
21. D flashing or steady and the start of the shutdown sequence For dispenser unit applications the ice level at shutoff may need to be adjusted depending on the dispenser agitation or dispense method Increasing the shutdown delay setting allows for a higher level of ice in the bin before the icemaker shuts down For a typical dispenser unit application a 100 second shutdown delay is recommended When used with a standard Hoshizaki storage bin any shutdown delay setting is acceptable A WARNING Increasing the shutdown delay allows a higher level of ice in the dispensing unit storage bin before shutdown This could lead to icemaker movement or ice overflow S1 Dip Switch Settin EZENN SO Infrared Sensor Shutdown Delay ON OFF OFF 100 Seconds 1 6 minutes Factory Default c Drain Freguency Control S1 dip switch 4 This unit is factory set for optimum performance with the 1 in 1 drain cycle This setting allows for removal of sediment from the evaporator every hour without interrupting the icemaking process An optional 1 in 12 drain cycle is available S1 Dip Switch Setting m Mei Drain Timer Interval Drain Valve Open ON 1 in 12 11 Hours 45 Minutes 10 Minutes d Continuous Dispensing Timer S1 dip switch 5 amp 6 DCM models only The dispense mode switch on DCMs must be in the CONTINUOUS position for this setting to apply The factory setting allows ice to be dispensed continuously as long as the dispense soleno
22. ER CANADA ONLY MINIMUM CIRCUIT AMPACITY EXTERIOR DIMENSIONS WxDxH DIMENSIONS WITH LEGS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC REFRIGERATION CIRCUIT COMPRESSOR CONDENSER COMPRESSOR PROTECTION FAN MOTOR PROTECTION REFRIGERATANT CIRCUIT PROTECTION REFRIGERANT CONTROL PUMPDOWN CONTROL REFRIGERANT CHARGE DESIGN PRESSURE OPERATING CONDITIONS ACCESSORIES SUPPLIED REOUIRED 208 230 60 1 3 WIRE w NEUTRAL FOR 115VAC 208 230 120 V 120 V 20A 20A 20A 20A 35 5 8 x21 7 8 x22 897x555x558mm 37 7 8 x25 1 2 x37 960x645x938mm 6 9 RLA 3A 02A 45 7 LRA MAX Galvanized Steel Net 190 Ib 86 kg Shipping 235 Ib 107 kg Permanent Connection 1 1 16 12 10 PARKER Liguid line 5 8 18 6 PARKER Hermetic Model CS12K6E PFV 279 Air Cooled Fin and Tube Type Discharge line Auto Reset Internal Protecter Thermal Protector Auto Reset High Pressure Switch Manual Reset Low Pressure Switch Headmaster C P R 190 PSIG Auto Reset Low Pressure Switch R404A 11 Ib 5000 g Remote Condensing Unit 10 Ib 12 oz 4900 g Icemaker 0 Ib 4 oz 100 g High 427 PSIG Low 230 PSIG VOLTAGE RANGE AMBIENT TEMP HEAT OF REJECTION 187 253VAC 4 122 F 17 700 BTU hr Leg 2 pcs Hex Head Bolt w Washer 8X16 M8x16 8 pcs Hex Nut M8 8 pcs Compatible Icemaker Note We reserve the right to make changes in specifications and design without prior notice ll General Information A Construc
23. F WT 70 F SRC 14H Note We reserve the right to make changes in specifications and design without prior notice 24 IV Service Diagnosis 4 WARNING This unit should be diagnosed and repaired only by qualified service personnel to reduce the risk of death electric shock serious injury or fire Risk of electric shock Use extreme caution and exercise safe electrical practices Moving parts e g fan blade can crush and cut Keep hands clear CHOKING HAZARD Ensure all components fasteners and thumbscrews are securely in place after the unit is serviced Make sure that none have fallen into the dispenser unit storage bin Make sure all food zones in the icemaker and dispenser unit storage bin are clean after the unit is serviced For cleaning procedures see VI B Cleaning and Maintenance A Ice Production Check To check production prepare a bucket or pan to catch the ice and a set of scales to weigh the ice After the icemaker has operated for 10 to 20 minutes catch the ice production for 10 minutes Weigh the ice to establish the batch weight Multiply the batch weight by 144 for the total production in 24 hours B Diagnostic Procedure This diagnostic procedure is a seguence check that allows you to diagnose the electrical system and components Before proceeding check for correct installation adeguate water pressure 10 to 113 PSIG and proper voltage per unit nameplate Check that the 24VAC 1A fus
24. Green POWER OK LED If CB green POWER OK LED is off check for proper supply voltage 115VAC input to CT If 115VAC is not present check the power switch and breaker Next check for proper 24VAC output voltage from CT Check CB K8 connector pin 1 W R wire to pin 2 LBU wire for 24VAC If 24VAC is not present and 1A 24VAC fuse is good replace CT If 24VAC is present and CB green POWER OK LED is off replace CB IS Diagnosis Check that IS green LED is on If CB green POWER OK LED is on and IS green LED is off check CB K6 connector pin 3 BR wire to CB K6 connector pin 1 DBU wire for 20VDC If 20VDC is not present confirm S1 dip switch 7 is in the ON position If S1 dip switch 7 is in the ON position and 20VDC is not present replace CB If IS yellow LED is on or flashing move ice away from IS lens If no ice is present clean the lens with a warm clean damp cloth If IS yellow LED is still on or flashing after cleaning the lens replace IS MBC Diagnosis Move S1 dip switch 7 to the OFF position Check that the actuator paddle is properly positioned Check for continuity across MBC proximity switch When MBC proximity switch is closed OVDC is read across CB K8 connector pin 3 GY wire and CB K8 connector pin 4 GY wire 5VDC is present between CB K8 connector pin 3 GY wire or 4 GY wire to CB K5 connector pin closest to CB K4 connector 5VDC gnd If 5VDC is not present replace CB CB monitors the following swit
25. Hoshizaki America Inc Modular Cubelet Serenity Series Model FS I SOOMLH C Including Condensing Unit Model SRC 14H SERVICE MANUAL A Superior Degree of Reliability www hoshizaki com Number 73190 ssued 9 20 2011 Revised 10 28 2011 A WARNING Only qualified service technicians should install and service the icemaker To obtain the name and phone number of your local Hoshizaki Certified Service Representative visit www hoshizaki com No service should be undertaken until the technician has thoroughly read this Service Manual Failure to service and maintain the equipment in accordance with this manual will adversely affect safety performance component life and warranty coverage and may result in costly water damage Proper installation is the responsibility of the installer Product failure or property damage due to improper installation is not covered under warranty Hoshizaki provides this manual primarily to assist qualified service technicians in the service and maintenance of the icemaker Should the reader have any questions or concerns which have not been satisfactorily addressed please call send an e mail message or write to the Hoshizaki Technical Support Department for assistance Phone 1 800 233 1940 770 487 2331 Fax 1 800 843 1056 770 487 3360 E mail techsupport hoshizaki com HOSHIZAKI AMERICA INC 618 Highway 74 South Peachtree City GA 30269 At
26. RE 4 2 L5 e L e m am INTERNAL TECT E BTI FUSE 4 EVAP HEATE k AR ove e 7 31 WB ht el i BK T 3 E NTROL TRANSFORME 115 120 VA IF Le hd L8 L8 FUSE INLET H o 28 GH m HATE LVE A ANE a A E B 2 4 ONTROL MI WITCH l w 19 T i 51 TROL 1 l EN ICE INFRARE TROL B04 n l Bi bi LI d J FLOAT SWITCH LB ER LOWE Bk Gy aK BI ET ECHAN ICAL BIN CONTROL ip SWITCH SI d IRE L F 1500VLH OFF OFF OFF OFF OFF FF OFF BR BLACH IOLET BR B TE BU DARK BLUE ELLOU EE 3K WHITE SLACI A 3R WHITE B LEU LIGHT zt 3U WHITE BLUE ANGE HITE ORANGE ET DIE E 22 2 SRC 14H 208 230 60 1 3 WIRE WITH NEUTRAL FOR 115V e ri GR WIRE COLOR CODE LI L2 N AND BK BLACK 0 ORANGE BR BROWN P PINK BR BK W GND DBU DARK BLUE R RED 6R GREEN W WHITE START CAP RUN CAP COMP 189 22 TMFD R 40MFD R R e bd C lI i ee e BK DBU Ei 0 0 2 5 BK AW BK BK START INTERNAL R RELAY CRANKCASE HEATER BK p L3 T4 e e e DBU BR p L2 T2 R e e e BR e LI T hk BK BK ki COM NO e BR De P L 4 NC W ceo EI DBU o o Eo h FAN MOTOR MAGNETIC CONTACTOR W e DBU FAN MOTOR CAP BR 10 MFD BK Hu d TT W 0 0 0 0 CONTROL LOW SAFETY LOW xxx H GH PRESS PRESS SWITCH P
27. RESS SWITCH SWITCH Control Low Pressure Switch Safety Low Pressure Switch Cut in 2949 PSIG Manual Reset 0 High Pressure Switch 38427 PSIG 284222 PSIG Differential 20413PSIG 342 5 PSIG Cut out 9 PSIG Differential 6 PSIG 23 C Performance Data 1 FS 1500MLH C with SRC 14H APPROXIMATE Ambient Water Temp F ICE PRODUCTION Temp F 50 70 90 PER 24 HR 80 1324 601 1268 575 1215 551 90 1163 528 1165 528 1067 484 lbs day kg day 100 1022 464 979 444 906 411 APPROXIMATE ELECTRIC 70 2097 2101 2204 180 ee 193111 e MS 90 2118 121221 2120 100 2136 242 2149 APPROXIMATE WATER CONSUMPTION PER 24 HR 159 602 152 576 146 552 90 140 529 140 529 128 485 gal day l day EVAPORATOROUTLETTEMP 10 42 o 32 10 42 amp 10 5 pan fon pan 9 5 fa fas om 5 too 15 t5 9 15 l HEAD PRESSURE 80 213 150 213 150 213 450 90 236 466 236 466 236 16 6 PSIG kg cm G 100 273 192 273 192 273 192 SUCTION PRESSURE 70 32 23 32 23 32 23 80 34 24 34 24 34 24 900 36 25 36 25 36 25 PSIG kg em G 100 39 27 39 27 39 2 HEAT OF REJECTION 1 400 BTU h AT 90 F WT 70 F FS 1500MLH C HEAT OF REJECTION 17 700 BTU h AT 90
28. WER OK LED turns off if 92VAC 5 or less voltage protection operates High Voltage The control voltage safeties automatically reset 147VAC 5 or more when voltage is corrected EUN NN DZ GMPR contacts fail to close MA MBC actuator paddle engaged Legend CB control board DV drain valve EH evaporator heater FMRs fan motors remote FT fill timer 90 second low water safety timer FZT freeze timer 30 minute freeze safety timer GM gear motor IS infrared sensor bin control MBC mechanical backup bin control PDS pump down solenoid valve WV inlet water valve 17 3 Controls and Adjustments NOTICE Dip switches are factory set Failure to maintain factory settings may adversely affect performance and warranty coverage For more information contact Hoshizaki Technical Support at 1 800 233 1940 a Default Dip Switch Settings The S1 dip switch settings are factory set to the following positions ee n Tw ERECRESERESSC S1 Dip Switch Normally off factory use 9 amp 10 Mechanical Backup Bin Control Shutdown Delay 8 Bin Control Selector 7 Continuous Dispensing Timer 5 amp 6 DCM models only do not adjust on modular icemakers Drain Frequency Control 4 Infrared Sensor Shutdown Delay 1 2 3 b Infrared Sensor Shutdown Delay S1 dip switch 1 2 3 Infrared sensor shutdown delay is the delay between the infrared sensor detecting ice infrared sensor yellow LE
29. al cleaner Rinse thoroughly after cleaning 17 Plug the unit back in Make sure the control switch is in the ICE position then move the power switch to the ON position to start the automatic icemaking process 55 B Maintenance The maintenance schedule below is a guideline More freguent maintenance may be reguired depending on water quality the icemaker s environment and local sanitation regulations 4 WARNING Only qualified service technicians should service this icemaker Move the power switch to the OFF position and unplug the unit from the electrical outlet before servicing 00 0 0 Maintenance Schedule 00 0 0 Maintenance Schedule FrequeneylArea T Monthly External Water Check for proper pressure and change if necessary Filters cemaker and Wipe down with clean soft cloth Use a damp cloth containing a neutral Dispenser Unit cleaner to wipe off oil or dirt build up Clean any chlorine staining rust Storage Bin colored spots using a non abrasive cleaner like Zud or Bon Ami Exterior Infrared Sensor Wipe down with clean cloth and warm water Lens Underside of cemaker and Top Kits Bin Door and Snout if applicable Every 6 cemaker and Clean and sanitize per the cleaning and sanitizing instructions provided in Months Dispenser Unit this manual Storage Bin Evaporator Wipe down with clean cloth and warm water Slowly pour one cup of Condensate Drain sanitizing solution prepare as outli
30. b freezing temperatures follow the instructions below to prevent damage When the icemaker is not used for two or three days under normal conditions it is sufficient to only move the power switch to the OFF position When storing the icemaker for extended time or in sub freezing temperatures follow the instructions below 1 Remove the water from the icemaker water supply line 1 Remove the front panel 2 Move the power switch to the OFF position 3 Close the icemaker water supply line shut off valve then open the icemaker water supply line drain valve 4 Allow the line to drain by gravity 5 Attach a compressed air or carbon dioxide supply to the icemaker water supply line drain valve 6 Move the control switch to the ICE position then move the power switch to the ON position 7 Blow the icemaker water line out using the compressed air or carbon dioxide supply 8 Close the icemaker water supply line drain valve 2 Drain the evaporator 1 Move the power switch to the OFF position Move the control switch to the DRAIN position then move the power switch back to the ON position Replace the front panel in its correct position 2 Allow the water system to drain for 5 minutes 3 Remove the front panel then move the power switch to the OFF position 4 Remove the evaporator drain line hose from the evaporator and attach a compressed air or carbon dioxide supply to the hose 5 Move the power switc
31. bient and water conditions UF S and LF S operate WV as needed to continue the icemaking process As ice is produced the water level in the reservoir drops UF S opens Nothing happens at this time When LF S opens FZT terminates and FT starts If LF S remains closed longer than 30 minutes after UF S closes CB shuts down the icemaker and sounds a 5 beep alarm To reset alarm move the power switch to the OFF position and then back to the ON position Refill VVTRIN COMP and GM LEDs are on LF S and UF S are open WV energizes GM GMPR EH PDS MC Comp and FMRs continue LF S closes Nothing happens at this time Reservoir continues to fill until UF S closes When UF S closes FT terminates and FZT starts WV de energizes If UF S remains open longer than 90 seconds after LF S opens FT exceeded and CB sounds a 1 beep alarm WV remains energized until UF S closes Alarm resets automatically when UF S closes d Drain Cycle 1 1 in 1 Drain Cycle DV energizes for 2 seconds once every hour when the 1 in 1 drain cycle is activated S1 dip switch 4 off factory default position 1 hour DCT terminates 2 second DVT starts DV energizes for 2 seconds 2 second DVT terminates 1 hour DCT starts All components and icemaking continue This setting is recommended for optimum icemaker performance The 1 in 1 drain cycle allows any sediment to drain from the evaporator without interrupting the icemaking process 12 2 1 in 12 Drain Cy
32. bin control PDS pump down solenoid valve SLPS safety low pressure switch UF S upper float switch WV inlet water valve 29 C Control Board Check Before replacing a control board that does not show a visible defect and that you suspect is bad always conduct the following check procedure This procedure will help you verify your diagnosis Before proceeding check for proper voltage per unit nameplate Check that the 24VAC 1A fuse and the 115VAC 7A GM fuse are good When checking for high voltage 115VAC always choose a neutral W wire to establish a good neutral connection When checking for lovv voltage secondary 24VAC always choose a neutral LBU wire to establish a good neutral connection If the icemaker is in alarm see II C 2 LED Lights and Audible Alarm Safeties Note EH energizes when GM LED turns on CB X1 Comp relay energizes PDS Refrigeration circuit low side pressure reaches 29 PSIG closing CLPS contacts MC is energized when CLPS closes energizing Comp and FMRs 1 Check the S1 dip switch settings to assure that they are in the factory default position For factory default settings see Il C 3 a Default Dip Switch Settings S1 dip switch 7 determines bin control application Bin Control Application Infrared Sensor Bin Control with Mechanical Backup Bin Control S1 dip switch 7 in the ON position Mechanical Bin Control Standard Ice Storage Bin S1 dip switch 7 in the OFF position 2 Star
33. ches with 5VDC Control Switch GMPR GMPR terminals 3 amp 5 F S and MBC A reading of 5VDC indicates that the switch is open 7 Fill Cycle VVTRIN LED is on Reservoir is empty and LF S and UF S are open FT starts WV energizes and fill cycle starts LF S closes Nothing happens at this time Reservoir continues to fill until UF S closes When UF S closes FT terminates and WV de energizes FZT and 30 second GM delay timer start If UF S remains open longer than 90 seconds after LF S opens FT exceeded and CB sounds a 1 beep alarm WV remains energized until UF S closes Alarm resets automatically when UF S closes Diagnosis If reservoir is empty and WTRIN LED is off confirm LF S status See IV E Float Switch Check and Cleaning If LF S is open and WTRIN LED is off replace CB If WTRIN LED is on check that the reservoir fills If not check water supply line shut off valve water filters and WV screen If VVTRIN LED is on and WV is off check CB K2 connector pin 8 W BR wire to a neutral LBU wire for 24VAC If 24VAC is not present check CB K2 connector pin 49 W R wire to a neutral LBU wire for 24VAC If 24VAC is present on CB K2 connector pin 9 and not on CB K2 connector pin 48 replace CB If 24VAC is present on CB K2 connector pin 48 W BR wire check continuity through WV solenoid If open replace WV If WV is energized and refill exceeds FT with no water in the reservoir check for DV leaking If reservoir is ful
34. cle optional DV energizes for ten minutes once every 12 hours when the 1 in 12 drain cycle is activated S1 dip switch 4 on optional 12 hour DCT terminates 5 minute ice purge timer begins PDS de energizes GM GMPR and EH continue Unit is in pump down mode When the refrigerant low side pressure drops to 9 PSIG CLPS opens MC de energizes de energizing Comp and FMRss When the 5 minute ice purge timer terminates GM GMPR and EH de energize 10 minute DVT starts DV energizes for 10 minutes After 10 minute DVT terminates 12 hour DCT starts 3 Manual Drain Manual drain is used when servicing the evaporator components and cleaning and sanitizing the unit When the unit is making ice and the control switch is moved to the DRAIN position there is a 3 second delay then the 5 minute ice purge timer begins and PDS de energizes Unit is in pump down mode When the refrigerant lovv side pressure drops to 9 PSIG CLPS opens MC de energizes de energizing Comp and FMRs When the 5 minute ice purge timer terminates GM GMPR and EH de energize DV energizes To avoid the 5 minute shutdown delay move the power switch to the OFF position then move the control switch to the DRAIN position Move the power switch to the ON position DV energizes and remains energized until the control switch is moved to the ICE position or the power switch is moved to the OFF position If the control switch is left in the DRAIN position for over 15 m
35. correct position Replace the control box cover in its correct position 14 Plug the unit into the electrical outlet then move the power switch to the ON position to start the automatic icemaking process 15 Replace the front panel in its correct position 2 Float Switch Cleaning Depending on local water conditions scale may build up on F S Scale on F S can cause inconsistent operation of UF S and LF S In this case both UF S and LF S should be cleaned and checked 1 Remove the front panel then move the power switch to the OFF position 2 Unplug the unit from the electrical outlet 3 Remove F S assembly from the reservoir cover See Fig 5 36 4 Wipe down F S assembly with a mixture of 1 part Hoshizaki Scale Away and 25 parts warm water Rinse the assembly thoroughly with clean water 5 While not necessary the floats can be removed from the shaft during cleaning If you remove them note that the blue float is on top UF S and the white float is on bottom LF S The floats must be installed with the magnets inside them towards the top of the switch See Fig 6 Installing the floats upside down will affect the timing of F S operation 6 Rinse the float switch assembly thoroughly with clean water and replace in its correct position 7 Plug the unit into the electrical outlet then move the power switch to the ON position to start the automatic icemaking process 8 Replace the front panel in its correct pos
36. d Control Suvitches The power switch and control switch are used to control the operation of this unit They are located on the control box Power Switch The power switch has 2 positions OFF and ON When the power switch is in the OFF position no power is supplied to the components When in the ON position power is supplied to the control transformer and control board The control board then supplies 5VDC to the control switch for unit operation Control Switch The control switch has 2 positions ICE and DRAIN When the control switch is in the ICE position open the icemaking process begins When the control switch is in the DRAIN position closed the drain process begins a ICE When the control switch is in the ICE position the control board reads an open circuit through the control switch contacts and starts the icemaking process b DRAIN When the control switch is in the DRAIN position the control board reads a closed circuit through the control switch and starts the drain process 20 lll Technical Information youms eunsseig Mo7 Ajayes Josserdwog a C YIUMS einssaeJg Mo 402 yYIUMS SoAIB eJnsseuid u iH 50
37. d a trace of refrigerant to the system if using an electronic leak detector and then raise the pressure using nitrogen gas 140 PSIG DO NOT use R 404A as a mixture with pressurized air for leak testing 1 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG NOTICE Always install a new drier every time the sealed refrigeration system is opened Do not replace the drier until after all other repair or replacement has been made Install the new drier with the arrow on the drier in the direction of the refrigerant flow When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 2 Use an electronic leak detector or soap bubbles to check for leaks Add a trace of refrigerant to the system if using an electronic leak detector and then raise the pressure using nitrogen gas 140 PSIG DO NOT use R 404A as a mixture with pressurized air for leak testing 3 Evacuation and Recharge R 404A 1 Attach a vacuum pump to the system Be sure to connect charging hoses to both high and lovv side service valves IMPORTANT The vacuum level and vacuum pump may be the same as those for current refrigerants However the rubber hose and gauge manifold to be used for evacuation and refrigerant charge should be exclusively for POE oils 2 Turn on the vacuum pump Open the gauge manifold valves then open the h
38. e OFF position and the control switch to the ICE position 5 Unplug the unit from the electrical outlet 6 Remove the control box cover 7 Remove CB K8 connector and check F S continuity Both the UF S and LF S should be open Check continuity between CB K8 connector pin 5 BK wire common and CB K8 connector pin 6 R wire UF S Next check continuity between CB K8 connector pin 5 BK wire common and CB K8 connector pin 7 DBU wire LF S If both are open continue to step 5 If either are closed follow the steps in IV E 2 Float Switch Cleaning After cleaning F S check UF S and LF S again Replace if necessary 8 Replace CB K8 connector in its correct position 9 Plug the unit into the electrical outlet then move the power switch to the ON position and let the water reservoir fill 10 Once the reservoir is full and GM starts move the power switch to the OFF position 11 Unplug the unit from the electrical outlet 12 Remove CB K8 connector and check F S continuity Both the UF S and LF S should be closed Check continuity between CB K8 connector pin 5 BK wire common and CB K8 connector pin 6 R wire UF S Next check continuity between CB K8 connector pin 5 BK wire common and CB K8 connector pin 7 DBU wire LF S If either are open follow the steps in IV E 2 Float Switch Cleaning After cleaning F S check UF S and LF S again Replace if necessary 13 Replace CB K8 connector in its
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40. e and the 115VAC 7A GM fuse are good When checking high voltage 115VAC always choose a neutral W wire to establish a good neutral connection When checking low voltage secondary 24VAC always choose a neutral LBU wire to establish a good neutral connection If the icemaker is in alarm see Il C 2 LED Lights and Audible Alarm Safeties Note EH energizes when GM LED turns on CB X1 relay energizes PDS CLPS closes when the refrigeration circuit low side pressure reaches 29 PSIG Once CLPS closes MC energizes energizing Comp and FMRs 1 Remove the front panel then move the power switch to the OFF position Move the control switch to the DRAIN position then move the power switch back to the ON position Replace the front panel in its correct position 2 Allow the water system to drain for 5 minutes 3 Remove the front panel Move the power switch to the OFF position then unplug the unit from the electrical outlet 4 Remove the control box cover and access CB 5 Check the S1 dip switch settings see II C 3 a Default Dip Switch Settings to assure that they are in the correct positions For proper operation of IS confirm that S1 dip switch 7 is in the ON position 25 6 Startup POWER OK LED is on Plug the icemaker into the electrical outlet then move the power switch to the ON position Move the control switch to the ICE position CB green POWER OK LED and IS green LED turn on Diagnosis CB
41. e to the center of the actuator 12 Replace all panels except the front panel in their correct positions Move the control switch to the ICE position then plug the unit back in Move the power switch to the ON position then replace the front panel in its correct position Make ice using the solution until the icemaker stops making ice 13 Remove the front panel then move the power switch to the OFF position Move the control switch to the DRAIN position then move the power switch back to the ON position Replace the front panel in its correct position 14 Allow the water system to drain for 5 minutes 15 Remove the front panel Move the power switch to the OFF position then unplug the unit from the electrical outlet 5 Sanitizing Procedure Final 1 Mix a new batch of the sanitizing solution 2 Make sure the power switch is in the OFF position the unit is unplugged from the electrical outlet and the water supply line shut off valve is closed Remove the top panel 3 Remove the strap connecting the spout to the chute assembly then remove the spout 4 Pour the sanitizing solution over the extruding head until the evaporator assembly and the reservoir are full and the solution starts to overflow into the drain pan 5 Replace the spout and strap in their correct positions 6 Allow the icemaker to sit for about 10 minutes before operation 7 Replace the top panel in its correct position Move the control sw
42. ents 4 WARNING This unit should be diagnosed and repaired only by qualified service personnel to reduce the risk of death electric shock serious injury or fire Move the power switch to the OFF position and unplug the icemaker from the electrical outlet and turn off the power supply to the condensing unit before servicing Lockout Tagout to prevent the power from being turned back on inadvertently CHOKING HAZARD Ensure all components fasteners and thumbscrews are securely in place after the eguipment is serviced Make sure that none have fallen into the dispenser unit storage bin Make sure all food zones in the icemaker and dispenser unit storage are clean after the unit is serviced For cleaning procedures see VI Cleaning and Maintenance When replacing evaporator assembly and water circuit components make sure there are no water leaks after the repair is complete A Service for Refrigerant Lines A WARNING Repairs reguiring the refrigeration circuit to be opened must be performed by properly trained and EPA certified service personnel Always recover the refrigerant and store it in an approved container Do not discharge the refrigerant into the atmosphere Use an electronic leak detector or soap bubbles to check for leaks Add a trace of refrigerant to the system if using an electronic leak detector and then raise the pressure using nitrogen gas 140 PSIG DO NOT use R 404A as a mixture with
43. h to the ON position Blow out the evaporator drain line using the compressed air or carbon dioxide supply until water stops coming out 6 Move the power switch to the OFF position then reconnect the evaporator drain line hose 7 Move the control switch to the ICE position Replace the front panel in its correct position then unplug the unit from the electrical outlet 8 Remove all ice from the dispenser unit storage bin Clean the dispenser unit storage bin liner using a neutral cleaner Rinse thoroughly after cleaning 57 3 Turn off the power supply to the remote condensing unit 1 Turn off the power supply to the remote condensing unit 2 When restarting follow the instructions in the instruction manual The remote condensing unit should have power for a minimum of 4 hours prior to startup to prevent compressor damage 58 VII Disposal This unit contains refrigerant and must be disposed of in accordance with applicable national state and local codes and regulations Refrigerant must be recovered by properly certified service personnel 59
44. he reservoir drops UF S opens Nothing happens at this time When LF S opens FZT terminates and FT starts FZT 30 Minute Freeze Safety Timer FZT starts when UF S closes and terminates when LF S opens If LF S does not open within 30 minutes of UF S closing CB shuts down the icemaker and sounds a 5 beep alarm See Il C 2 LED Lights and Audible Alarm Safeties To reset turn the power supply off and on again FS Diagnosis Check that COMP LED is on and that PDS energizes If COMP LED is off check GMPR terminal 3 to GMPR terminal 5 W O wires for 5VDC If 5VDC is present check GMPR terminal 7 R wire to GMPR terminal 8 W wire for 115VAC If 115VAC is not present replace CB If 115VAC is present and GMPR contacts are open 5VDC present on GMPR terminals 3 and 5 check GMPR solenoid voltage and solenoid continuity Replace GMPR if necessary If COMP LED is on and PDS is not energized check CB X1 relay BR wire to a neutral W wire and CB X1 relay DBU wire to a neutral W wire for 115VAC If 115VAC is present on CB X1 BR wire and not on CB X1 DBU wire replace CB If 115VAC is present on CB X1 DBU wire and PDS is not energized check for 115VAC at PDS DBU wire to a neutral W wire for 115VAC If 115VAC is present and PDS is not energized check PDS solenoid for continuity If open or if PDS is sticking closed replace PDS SRC Diagnosis Confirm that CLPS closes Once CLPS closes MC energizes energizing Comp and FMR If n
45. hock injury fire or damage to the units FS 1500MLH C e This icemaker requires an independent power supply of proper capacity See the nameplate for electrical specifications Failure to use an independent power supply of proper capacity can result in a tripped breaker blown fuse damage to existing wiring or component failure This could lead to heat generation or fire THIS UNIT MUST BE GROUNDED This unit is eguipped with a NEMA 5 15 three prong grounding plug Il to reduce the risk of potential shock hazards It must be plugged into a properly grounded independent 3 prong wall outlet If the outlet is a 2 prong outlet it is your personal responsibility to have a gualified electrician replace it with a properly grounded independent 3 prong wall outlet Do not remove the ground prong from the power cord and do not use an adapter plug Do not use an extension cord A WARNING continued FS 1500MLH C continued To reduce the risk of electric shock do not touch the power switch or plug with damp hands Do not use an icemaker with a damaged power cord The power cord should not be altered jerked bundled weighed down pinched or tangled Such actions could result in electric shock or fire To unplug the icemaker be sure to pull the plug not the cord and do not jerk the cord Do not make any alterations to the icemaker Alterations could result in electric shock injury fire or damage to the icemaker
46. iance or property IMPORTANT Indicates important information about the use and care of the appliance 4 WARNING This icemaker should be destined only to the use for which it has been expressly conceived Any other use should be considered improper and therefore dangerous The manufacturer cannot be held responsible for injury or damage resulting from improper incorrect and unreasonable use Failure to service and maintain the eguipment in accordance with this manual will adversely affect safety performance component life and warranty coverage and may result in costly water damage To reduce the risk of death electric shock serious injury or fire follow basic precautions including the following Only qualified service technicians should install and service these units These units must be installed in accordance with applicable national state and local codes and regulations e Before Servicing Move the power switch to the OFF position Unplug the icemaker from the electrical outlet and turn off the power supply to the condensing unit Place the disconnect if applicable in the off position Lockout Tagout to prevent the power supply from being turned back on inadvertently To reduce the risk of electric shock make sure the icemaker power switch is in the OFF position before plugging in or unplugging the icemaker Do not make any alterations to the icemaker or condensing unit Alterations could result in electric s
47. id is activated S1 Dip Switch Setting Dispense Time Nos Nes ON 60 Seconds ON e Bin Control Selector S1 dip switch 7 This unit is factory set for infrared sensor bin control operation No adjustment is required When used on a standard ice storage bin the mechanical bin control may be used instead of the infrared sensor by moving S1 dip switch 7 to the off position In the factory default position 81 dip switch 7 in the on position the gear motor delay after the upper float switch closes is 30 seconds When the mechanical bin control is used S1 dip switch 7 in the off position the gear motor delay after the upper float switch closes is 5 seconds WARNING Do not place S1 dip switch 7 in the off position on dispenser unit applications S1 Dip Switch Setting Bin Control Application Gear Motor Delay OFF Mechanical Bin Control Standard Ice Storage Bins Only 5 seconds OF Infrared Sensor with Mechanical Bin Control Backup 19 f Mechanical Bin Control Shutdown Delay S1 dip switch 8 Factory set for normal operation No adjustment is reguired The shutdown delay is the time between the mechanical bin control proximity switch opening and the control board shutting off the icemaker S1 Dip Switch Setting Mechanical Backup Bin Nog Control Shutdown Delay 0 25 Seconds 6 7 Seconds g Factory Use S1 Dip Switch 9 amp 10 Factory set for optimum performance Do not adjust D Povver an
48. igh and lovv side service valves Never allow the oil in the vacuum pump to flow backwards 3 Allow the vacuum pump to pull down to a 29 9 Hg vacuum Evacuating period depends on pump capacity 42 4 Close the low side valve and high side valve on the gauge manifold 5 Disconnect the gauge manifold hose from the vacuum pump and attach it to a refrigerant service cylinder Remember to loosen the connection and purge the air from the hose See the rating label inside the icemaker for the reguired refrigerant charge Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard 700 latest edition be used 6 A liguid charge is reguired for charging an R 404A system to prevent fractionation Place the service cylinder on the scales if the service cylinder is not eguipped with a dip tube invert the service cylinder then place it on the scales Open the high side valve on the gauge manifold 7 Allow the system to charge with liguid until the proper charge weight is met 8 If necessary add any remaining charge to the system through the low side NOTICE To prevent compressor damage use a throttling valve or liguid dispensing device to add the remaining liquid charge through the low side service valve with the unit running 9 Close the high and lovv side service valves Close the high and lovv side gauge manifold valves then disconnect the gauge manifold hoses 10 Cap the service valves to preve
49. inute freeze safety timer GM gear motor GMPR gear motor protect relay IS infrared sensor bin control LF S lower float switch MBC mechanical backup bin control MC magnetic contactor PDS pump down solenoid valve UF S upper float switch WV inlet water valve 2 Seguence Flow Chart Jojouu Jeob W9 Daun Aq yes z uiu OE ezeeJ 124 Jou 5 Jejem MO 99S 06 Jeun 11 1 4 A BA Jop JejuI AM 5 UP SHINA youms e0 42ddn s 4n Jejeoy J01010de e H3 s 06 jeun eBund Lei Jou A PA UIBIP LAG senunuo9 WEI SABA plouojos UMop dwnd sad SAJBA uleIp AC 2 IND senunuoo H3 Jonuoo ug Jeuun ejoAo urejp 1L9d jeseJ 19a 2 H3 peziBieue ep SHINS dnyoeq eolueyoouw Jgn Josseiduoo duio3 21 AG peziG1eue Ad peziBieue ep dwog youms Te0JJ JOMO S 41 youms ensseld moj joguoo Sd12 pepeulule LAQ Ulul 01 uiu OL sueis LAG uedo Sd19 Josues peueyjul S p eoq 01400 82 Aug r O ug Aug ejo 9 ueq 2 Sad p yams dip S ieuondo j1e say 9 92AJ ueq ZI UI L uo Gulysey q31 woe 51 yo G37 mollaa SI uo 037 ueeJ9 SI uo q31 SI Z 1 youms dip LS Aq peuiuuejep Aejap SI AOQE 9jo IL OF uieig yes y Joyeulo3J p eui or E eBung 99 z x sojnuiui G 120 L AOQE 9jo 9 eBung z 01 yo 031 Moi
50. inutes CB sounds a 2 beep alarm To reset move the control switch to the ICE position e Shutdown Cycle 1 Infrared Sensor When ice activates IS yellow LED starts flashing when ice is at the outer limit of its range and turns steady as ice nears After IS yellow LED turns on flashing or steady IS shutdown delay timer S1 dip switch 1 2 3 starts For a typical dispenser unit application a 100 second shutdown delay is recommended When used with a standard Hoshizaki storage bin any shutdown delay setting is acceptable See II C 3 b Infrared Sensor Shutdown Delay S1 dip switch 1 2 3 Once IS shutdown delay timer terminates PDS de energizes and the 5 minute ice purge timer starts Unit is in pump down mode When the refrigerant low side pressure drops to 9 PSIG CLPS opens MC de energizes de energizing Comp and FMRs When the 5 minute ice purge timer terminates GM GMPR and EH de energize Note If IS fails to shut down the icemaker MBC opens CB shuts down the icemaker and sounds a 9 beep alarm 2 Mechanical Backup Bin Control MBC opens actuator paddle engaged CB shuts down the icemaker within 10 seconds and sounds a 9 beep alarm Legend CB control board CCH crankcase heater CLPS control lovv pressure switch Comp compressor DCT drain cycle timer DV drain valve DVT drain valve timer EH evaporator heater FMRs fan motors remote FT fill timer 90 second low water safety timer FZT freeze timer 30 m
51. iods of Non Use Keep ventilation openings in the appliance enclosure or in the built in structure clear of obstruction Do not place objects on top of the icemaker The dispenser unit storage bin is for ice use only Do not store anything else in the dispenser unit storage bin I Specifications A Icemaker 1 FS 1500MLH C with SRC 14H AC SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Ib day kg day Reference without marks SHAPE OF ICE ICE HARDNESS FACTOR APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W KWH 100 Ib ELECTRIC W KWH 100 Ib POTABLE WATER gal 24HR gal 100 Ib EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN REFRIGERATION CIRCUIT ICE MAKING SYSTEM HARVESTING SYSTEM ICE MAKING WATER CONTROL BIN CONTROL SYSTEM Primary BIN CONTROL SYSTEM Secondary CONDENSING UNIT EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE P C BOARD CIRCUIT PROTECTION GEAR MOTOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REOUIRED OPERATING CONDITIONS 120 60 1 120V 3 6RLA 15A 15A Ambient TempCF 50 70 90 70 80 1324 601 1268 575 1215 551 90 1163 528 1165 528 1067 484 100 1022 464 979 444 906 411 Cubelet Approximate 8096 90
52. ir correct positions 9 Allow the icemaker to sit for about 10 minutes before operation If you placed a clamp on the reservoir hose in step 7 remove it before operation 10 In bad or severe water conditions clean the float switch assembly as described below Otherwise continue to step 11 a Remove the float switch assembly from the reservoir cover b Wipe down the float switch assembly with the cleaning solution c Rinse the float switch assembly thoroughly with clean water d Replace the float switch assembly in its correct position 11 Wipe down the infrared sensor lens located on the bottom of the icemaker with the cleaning solution Next rinse the cleaning solution off of the infrared sensor lens with a clean damp cloth 12 Replace the top panel in its correct position Move the control switch to the ICE position then plug the unit back in Move the power switch to the ON position then replace the front panel in its correct position Make ice using the solution until the icemaker stops making ice 13 Remove the front panel then move the power switch to the OFF position Move the control switch to the DRAIN position then move the power switch back to the ON position Replace the front panel in its correct position 14 Allow the water system to drain for 5 minutes 15 Remove the front panel Move the control switch to the ICE position then replace the front panel in its correct position 16 Open the
53. is supplied to K8 connector pins 1 amp 2 e S1 Dip Suvitch K6 Connector Dispensing LEDs not used on this model J2 Connector Open K3 K4 K5 Connectors Open V F A Control Board 16 BE Sensor Bin EE 20VDC 1 Dark Blue 2 White signal common 3 Brown ground 2 LED Lights and Audible Alarm Safeties At startup CB green POWER OK LED turns on immediately to indicate proper control voltage and will remain on unless a control voltage problem occurs For further details see 11 Sequence of Operation Energized Fill Cycle WTRIN ce Purge Cycle Tou En Freeze Cycle with refill GM COMP GM EH PDS Comp On unti UF S closes WTRIN refill FMRs Alarm sounds after VVV refill 90 sec 1 in 1 Drain Cycle FLUSH Drain DV 2 sec 2 sec S1 dip switch 4 off GM COMP Comp GM EH PDS only if IS not FMRs only if IS not satisfied satisfied 1 in 12 Drain Cycle FLUSH Drain B 10 min 10 min S1 dip svvitch 4 on The built in safeties shut dovvn NNNM unit and have alarms as listed below UF S open 90 seconds after WV energized and UF S closes Control Switch Automatic reset once the control switch is In DRAIN position longer than 15 minutes moved to the ICE position See 11 2 SRC 14H for high pressure switch operation WV off gt 30 minutes since last WV activation Low Voltage CB green PO
54. itch is in the ON position and the control switch is in the ICE position CB green POWER OK LED and IS green LED turn on CB green POWER OK LED remains on constantly If IS green LED is off and IS yellow LED is on or flashing move ice away from IS lens a Fill Cycle WTRIN LED is on Reservoir is empty and LF S and UF S are open FT starts WV energizes and fill cycle starts LF S closes Nothing happens at this time Reservoir continues to fill until UF S closes When UF S closes FT terminates and WV de energizes FZT and 30 second GM delay timer start If UF S remains open longer than 90 seconds after LF S opens FT exceeded and CB sounds a 1 beep alarm WV remains energized until UF S closes Alarm resets automatically when UF S closes b Ice Purge Cycle GM LED is on 30 second GM delay timer terminates GM GMPR and EH energize 5 minute ice purge timer starts GM runs for 5 minutes to clear any ice from the evaporator To bypass the 5 minute ice purge timer press CB SERVICE button after GM starts WARNING Risk of electric shock Care should be taken not to touch live terminals Note UF S must be closed before GM will energize c Freeze Cycle COMP and GM LEDs are on 5 minute ice purge timer terminates GM GMPR and EH continue PDS energizes When CLPS in SRC closes MC energizes allowing Comp and FMRs to energize CCH de energizes Ice production starts 4 to 6 minutes after Comp energizes depending on am
55. itch to the ICE position then plug the unit back in Move the power switch to the ON position then replace the front panel in its correct position Make ice using the solution until the icemaker stops making ice 8 Remove the front panel then move the power switch to the OFF position Move the control switch to the DRAIN position then move the power switch back to the ON position Replace the front panel in its correct position 9 Allow the water system to drain for 5 minutes 54 10 Remove the front panel Move the control switch to the ICE position then replace the front panel in its correct position 11 Open the water supply line shut off valve to supply water to the reservoir 12 After the gear motor starts remove the front panel Move the power switch to the OFF position Move the control switch to the DRAIN position then move the power switch back to the ON position Replace the front panel in its correct position 13 Allow the water system to drain for 5 minutes 14 Remove the front panel Move the control switch to the ICE position then replace the front panel in its correct position 15 Allow the icemaker to run for about 30 minutes then remove the front panel Move the power switch to the OFF position then unplug the unit from the electrical outlet 16 Pour warm water into the dispenser unit storage bin and melt any remaining ice Clean the dispenser unit storage bin liner using a neutr
56. ition Legend CB control board F S float switch GM gear motor LF S lower float switch UF S upper float switch a Float Switch Assembly Reservoir Cover Aq Fig 5 Red R upper float svvitch Black BK je common Dark Blue DBU lower float switch Magnet towards top Upper Float blue Spring Retainer Clip Magnet towards top Lower Float white Plastic Retainer Clip Fig 6 37 F Diagnostic Charts Before consulting the diagnostic charts check for correct installation proper voltage per unit nameplate and adequate water pressure 10 to 113 PSIG Check CB using the steps in IV C Control Board Check Check the dip switch settings to assure that S1 dip switch settings are in the factory default position For factory default settings see Il C 3 a Default Dip Switch Settings 1 No Ice Production Ta Power SuppiyFS Tb Power Supply SAC 2 Water Supply 3 Power Switch 115VAC 24VAC 5 1A Fuse FS Contro Box 6 Control Board See IV C Contro Board Check 7 Control Such 8 Infrared Sensor Bin Control 3 Mechanical Backup Bin Control b Proximity switch stuck open Actuator paddle does not move freely Fill Cycle 1 Control Board No power to inlet water valve No power to float switch or not reading float switch condition 2 Inlet Water Valve Screen or orifice clogged 3 Float Switch Float does not move freely
57. l and overflowing check for open UF S See IV E Float Switch Check and Cleaning If UF S is closed check that WV de energizes If not check CB K2 connector pin 8 W BR wire to a neutral LBU wire for 24VAC If 24VAC is present replace CB If WV de energizes and water continues to fill the reservoir replace WV 26 8 Ice Purge Cycle GM LED is on 30 second GM delay timer terminates GM GMPR and EH energize 5 minute ice purge timer starts Diagnosis If GM LED is off check that UF S closes and WV de energizes If UF S is closed 30 seconds has passed and GM LED remains off replace CB If GM LED is on and GM is off check CB K1 connector pin 3 BR wire to a neutral W wire for 115VAC If 115VAC is not present check 115VAC power supply If 115VAC is present check CB K1 connector pin 2 W BK wire to a neutral W wire If 115VAC is present on pin 3 and not on pin 12 replace CB If 115VAC is present on pin 2 check GM fuse GM internal protector GM windings and capacitor and GM coupling between auger and GM 9 Freeze Cycle COMP and GM LEDs are on 5 minute ice purge timer terminates GM GMPR and EH continue PDS energizes Once the refrigeration circuit lovv side pressure reaches 29 PSIG CLPS closes MC energizes allowing Comp and FMRs to energize CCH de energizes Ice production starts 4 to 6 minutes after Comp energizes depending on ambient and water conditions As ice is produced the water level in t
58. nd Washers Seal Bolts and Washers Socket Head Cap Screw and Split Socket Head Cap Screw and Split lt Lock Washer Lock Washer Mechanical Seal Lower Bearing Truss Head Screw pressed into lower housing w Rubber Washer Lower Housing Hex Bolt and Washer Gear Motor Barrier Spline Coupling Socket Head Cap Screw and Split Lock Washer Fig 7 1 Upper Bearing Wear Check To ensure that the bearing inside the extruding head does not exceed the wear tolerance of 02 follow the instructions below 1 Remove the front panel Move the power switch to the OFF position then unplug the unit from the electrical outlet 2 3 4 5 Remove the top and side panels Remove the strap connecting the spout to the chute assembly then remove the spout Remove the bolt from the auger and lift off the cutter and washer NS e TJ Replace the bolt in the auger Grasp the 02 Round Stock bolt at the top of the auger and move the or Pin Gauge auger towards you and then try to insert a 02 round stock or pin gauge in between the back side of the auger shaft and the bearing surface Check several locations around the auger shaft If the gauge goes between the shaft and the bearing at any point or if the bearing is scratched or cracked both the top bearing in the extruding head and the lower bearing in the lower housing should be replaced Instructions for removing the extruding head and lower h
59. ned in the sanitizing instructions in Pan and Gear this manual into the evaporator condensate drain pan Be careful not to Motor Drain Pan overflow the pan This solution will flow down to the gear motor drain pan and out the drain line to sanitize these areas Repeat with a cup of clean water to rinse cemaker and Check to make sure they are clear Dispenser Unit Storage Bin Drains Yearly Inlet Water Valve Close the water supply line shut off valve and drain the water system Clean and Drain Valve the inlet water valve screen and clean and inspect the drain valve Inspect the water hoses and clean replace if necessary Condenser Inspect Clean if necessary by using a brush or vacuum cleaner cemaker nspect for oil spots loose componenis fasteners and vvires Upper Bearing Check for vvear using 02 round stock or pin gauge Replace both upper extruding head bearing and lovver bearing if vvear exceeds factory recommendations See the Service Manual for details After Upper Bearing nspect Replace both upper bearing and lovver bearing if vvear exceeds 3 Years extruding head _ factory recommendations Replace the mechanical seal if the seal s contact then Yearly Lower Bearing surfaces are worn cracked or scratched and O Ring lower housing Mechanical Seal Evaporator Cylinder Auger 56 C Preparing the Icemaker for Periods of Non Use NOTICE When storing the icemaker for an extended time or in su
60. nt a possible leak B Important Notes for Component Replacement NOTICE When replacing a component listed below see the notes to help ensure proper operation Component Note Compressor Install a new drier start capacitor run capacitor and start relay Expansion Valve e Install a new drier Attach the expansion valve bulb to the suction line in the same location as the previous bulb The bulb should be between the 10 and 2 o clock positions on the tube Secure the bulb with the clamp and holder then insulate it Pump Down Install a new strainer and drier Solenoid Valve 1 Use copper tube of the same diameter and length when replacing valve lines Install a new fan motor capacitor Evaporator Assembly Components See Fig 7 Upper and e Inspect the upper bearing for wear See V B 1 Upper Bearing Wear Check Replace if Lower Bearings necessary When replacing the upper bearing it is advised to also change the lower bearing at the same time Evaporator Install a new drier e Inspect the mechanical seal and O ring prior to installing the new evaporator If worn cracked or scratched the mechanical seal should also be replaced Gear Motor Install a new gear motor capacitor 43 Evaporator Assembly Evaporator Heater D Cutter Head Bolt T Cutter Upper Bearing pressed into auger Extruding Head Dowel Pin Auger Rubber O Ring Seal Bolts a
61. o the CB red K4 connector See Fig 2 Then place the black negative test lead from the multimeter to the corresponding pin to complete the 5VDC 3LIH check L Red positive test lead to white K5 connector pin closest to Black Negative 7 Control Switch red K4 connecotor Test Lead white black W BK Red Positive 205 HES ce Yellow Jumper Y Multimeter SD 2 1722 Test Lead a Te ML ue rese Gear Motor Protect Relay Fia 2 je terminals 3 and 5 9 OJ white orange W O Control Board K9 Connector a Control Switch CB K9 connector pins 1 and 2 W BK wires 5VDC is present from CB white K5 connector pin closest to CB red K4 connector to CB K9 connector pin 1 W BK wire at all times If 5VDC is not present replace CB When the control switch is in the ICE position the control switch contacts are open OVDC is present from CB white K5 connector pin closest to CB red K4 connector to CB K9 connector pin 2 W BK wire When in the ICE position 5VDC is present from CB K9 connector pin 1 W BK wire to CB K9 connector pin 2 W BK wire When the control switch is in the DRAIN position the control switch contacts are closed 5VDC is present from CB white K5 connector pin closest to CB red K4 connector to CB K9 connector pins 1 or 2 W BK wires If 5VDC is not present replace C
62. olution on the parts or in the dispenser unit storage bin 1 Cleaning Solution IMPORTANT For safety and maximum effectiveness use the solution immediately after dilution Dilute 9 6 fl oz 0 29 1 of Hoshizaki Scale Away with 1 6 gal 6 0 1 of warm water 2 Cleaning Procedure 1 Remove the front panel then move the power switch to the OFF position Move the control switch to the DRAIN position then move the power switch back to the ON position Replace the front panel in its correct position 2 Close the water supply line shut off valve 3 Allow the water system to drain for 5 minutes 4 Remove the front panel Move the power switch to the OFF position then unplug the unit from the electrical outlet Remove the top panel 5 Remove all of the ice from the dispenser unit storage bin 6 Remove the strap connecting the spout to the chute assembly then remove the spout See Fig 15 51 7 Pour the cleaning solution over the extruding head until the evaporator assembly and the reservoir are full and the solution starts to overflow into the drain pan Note If there is excess scale on the extruding head fill the evaporator assembly and reservoir as described above then use a clamp on the reservoir hose between the reservoir and evaporator assembly to block flow Pour additional cleaning solution over the extruding head until the evaporator assembly is completely full 8 Replace the spout and strap in the
63. ot check CLPS SLPS manual reset and HPS automatic reset CLPS When PDS is energized CLPS closes when refrigeration circuit lovv side pressure reaches 29 PSIG If CLPS is open check that refrigeration circuit lovv side pressure has reached 29 PSIG If refrigeration circuit low side pressure is too low confirm proper TXV operation check for refrigerant restrictions drier PDS and correct refrigerant charge Recover evacuate and recharge if necessary SLPS If SLPS is open manually reset SLPS Confirm proper TXV operation check for refrigerant restriction drier PDS and correct refrigerant charge Recover evacuate and recharge if necessary 27 HPS If HPS is open HPS automatically resets when refrigeration circuit high side pressure is within an acceptable range If HPS does not reset open allow pressures to egualize and HPS to reset If refrigeration circuit high side pressure does not drop recover evacuate and recharge if necessary Before restarting unit check for dirty or clogged condenser Once unit is restarted check for proper FMR operation and fan blade for binding Check receiver service valves PDS and drier for refrigeration circuit restriction Also check for proper HM operation If high side refrigerant pressures have returned to an acceptable range and HPS does not close replace HPS MC If MC energizes and Comp does not energize check MC L1 BK wire and MC L2 BR wire to a neutral W wire for 115V
64. ousing are located later in Fig 8 this procedure Note Replacing the bearing requires a bearing press adaptor If one is not available replace the whole extruding head and lower housing 6 7 8 9 Remove the bolt Replace the washer cutter and cutter bolt Replace the spout Replace the top and side panels in their correct positions SS lt lt as wa Plug the unit into the electrical outlet then move the power switch to the ON position to start the automatic icemaking process 10 Replace the front panel in its correct position 2 Removal and Replacement of Cutter 1 Remove the front panel Move the power switch to the OFF position then unplug the unit from the electrical outlet 2 3 4 5 6 7 Remove the top and side panels Remove the strap connecting the spout to the chute assembly then remove the spout Remove the bolt and lift off the cutter Install the new cutter Replace the bolt Replace the spout ww Sa bb T Replace the top and side panels in their correct positions 45 8 Plug the unit into the electrical outlet then move the power switch to the ON position to start the automatic icemaking process 9 Replace the front panel in its correct position 3 Removal and Replacement of Extruding Head 1 Remove the front panel then move the power switch to the OFF position 2 Move the control switch to the DRAIN position 3 4 5 Move the power switch to the OFF posi
65. pressurized air for leak testing NOTICE Do not leave the system open for longer than 15 minutes when replacing or servicing parts The Polyol Ester POE oils used in R 404A units can absorb moisture guickly Therefore it is important to prevent moisture from entering the system when replacing or servicing parts Always install a new drier every time the sealed refrigeration system is opened Do not replace the drier until after all other repair or replacement has been made Install the new drier with the arrow on the drier in the direction of the refrigerant flow When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 41 1 Refrigerant Recovery The icemaker unit is provided with refrigerant service valves Using proper refrigerant practices recover the refrigerant from the service valves and store it in an approved container Do not discharge the refrigerant into the atmosphere 2 Brazing 4 WARNING R 404A itself is not flammable at atmospheric pressure and temperatures up to 1769F 809C R 404A itself is not explosive or poisonous However when exposed to high temperatures open flames R 404A can be decomposed to form hydrofluoric acid and carbonyl fluoride both of which are hazardous Do not use silver alloy or copper alloy containing arsenic Use an electronic leak detector or soap bubbles to check for leaks Ad
66. ral LBU wire for 24VAC If 24VAC is not present check CB K2 connector pin 9 W R wire to a neutral LBU wire for 24VAC If 24VAC is present on CB K2 connector pin 9 and not on CB K2 connector pin 8 replace CB If 24VAC is present on CB K2 connector pin 8 W BR wire check continuity through WV solenoid If open replace WV If WV is energized and refill exceeds FT with no water in the reservoir check for DV leaking If reservoir is full and overflowing check for open UF S See IV E Float Switch Check and Cleaning If UF S is closed check that WV de energizes If not check CB K2 connector pin 8 W BR wire to a neutral LBU wire for 24VAC If 24VAC is present replace CB If WV de energizes and water continues to fill the reservoir replace WV FT 90 Second Low Water Safety Timer When LF S opens 90 second low water safety timer starts If UF S does not close within 90 seconds after LF S opens FT exceeded CB sounds a 1 beep alarm and a 90 second shutdown cycle starts See II C 2 LED Lights and Audible Alarm Safeties PDS de energizes Refrigeration circuit low side pressure drops to 9 PSIG opening CLPS CLPS opens de energizing MC which de energizes Comp and FMRs GM GMPR and EH continue 90 second purge timer terminates GM GMPR and EH de energize WV and 1 beep alarm continue until UF S closes 28 11 Shutdown Infrared Sensor When ice activates IS yellow LED starts flashing when ice is at the outer limit of its
67. re with pressurized air for leak testing 20 Evacuate the system and charge it with refrigerant See the rating label inside the icemaker for the reguired refrigerant charge Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard 700 latest edition be used 21 Replace the removed parts in the reverse order of which they were removed 22 Replace the top and side panels in their correct positions 23 Move the control switch to the ICE position 24 Plug the unit into the electrical outlet then move the power switch to the ON position to start the automatic icemaking process 25 Replace the front panel in its correct position 6 Removal and Replacement of Mechanical Seal and Lower Housing 6a Mechanical Seal 1 Remove the front panel then move the power switch to the OFF position 2 Move the control switch to the DRAIN position 3 Move the power switch to the ON position 4 Allow the water to drain from the evaporator 5 Move the power switch to the OFF position then unplug the unit from the electrical outlet 6 7 8 9 Remove the top and side panels Remove the strap connecting the spout to the chute assembly then remove the spout Remove the extruding head seal bolts Using the cutter lift out the auger assembly T The mechanical seal consists of tvvo parts One moves along vvith the auger and the other is fixed on the lower housing If
68. tarts to overflow into the drain pan 4 Remove the proximity switch from the chute assembly then remove the chute assembly from the icemaker 5 Remove the packing at the bottom of the ice chute Remove the 3 ties and the chute insulation 6 Remove the 2 baffles 7 Remove the plate and the packing from the top of the ice chute then remove the backup bin control assembly by sliding it slightly towards the chute opening and lifting it off 8 Disassemble the backup bin control assembly by removing the 2 snap pins shaft and actuator S Packing Proximity Switch S SSS Backup Bin Control Assembly Mount zi d d Shaft y Actuator li E Baffles el E Ties V Float Switch Hook and Loop Assembly m Reservoir 7777 Nylon O Ring Extruding Head Chute Insulation Fig 15 Chute Ve R D AN F wo eee Evaporator Assembly Reservoir Packing Hose Infrared Sensor Lens 53 9 Soak the spout O ring packings drip guide chute baffles plate and backup bin control assembly in the sanitizing solution for 10 minutes then wipe them down 10 Rinse the parts thoroughly with clean water NOTICE If the solution is left on these parts they will rust 11 Replace all parts in their correct positions IMPORTANT When installing the baffles make sure that the bent surface the one without the studs faces the actuator so that the bent surface can guide the ic
69. the chute assembly then remove the spout 9 Disconnect the water hoses 10 Remove the extruding head seal bolts Using the cutter lift out the auger assembly 11 Remove the insulation and the expansion valve bulb on the suction line 12 Disconnect the inlet and outlet tubing 13 Remove the socket head cap screws and split lock washers securing the evaporator to the lower housing 14 Lift off the evaporator 15 Inspect the mechanical seal and O ring prior to installing the new evaporator The mechanical seal consists of two parts One moves along with the auger and the other is fixed on the lower housing If the contact surfaces of these two parts are worn cracked or scratched the mechanical seal may cause water leaks and should be replaced Instructions for removing the mechanical seal and lower housing are located later in this procedure 16 Make sure the lower mechanical seal is in place then place the evaporator in position Secure the evaporator to the lower housing using the socket head cap screws and split lock washers 17 Remove the drier then place the new drier in position 47 18 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG 19 Use an electronic leak detector or soap bubbles to check for leaks Add a trace of refrigerant to the system if using an electronic leak detector and then raise the pressure using nitrogen gas 140 PSIG Do Not use R 404A as a mixtu
70. the contact surfaces of these two parts are worn cracked or scratched the mechanical seal may cause water leaks and should be replaced 10 Remove the socket head cap screws and split lock washers securing the evaporator to the lower housing 11 Raise the evaporator up to access the lower housing 12 Remove the O ring and mechanical seal from the housing If only replacing the mechanical seal proceed to step 15 NOTICE To help prevent water leaks be careful not to damage the surfaces of the O ring or mechanical seal 48 6b Lower Housing 13 Remove the hex bolts w washers securing the lower housing to the gear motor and remove the lower housing from the gear motor If inspection of the upper bearing inside the extruding head see V B 1 Upper Bearing Wear Check indicates that it is out of tolerance replace both it and the bearing inside the lower housing Note Replacing the bearing reguires a bearing press adaptor If one is not available replace the whole extruding head and lower housing 14 Mount the lower housing on the gear motor 15 Install the O ring and lower part of the mechanical seal on the lower housing 16 Make sure the lower mechanical seal is in place then place the evaporator in position Secure the evaporator to the lower housing using the socket head cap screws and split lock washers 17 Install the auger assembly with the upper part of the mechanical seal attached 18 Replace the removed parts in
71. tion 1 Icemaker a FS 1500MLH C Mechanical Backup Top Panel CH Bin Control Float Switch Inlet Water Valve Evaporator Heater Power Cord Icemaking Unit Cutter Extruding Head Evaporator ce Chute x E Thermostatic A Expansion Valve ad Strainer High Side Service Valve Lovv Side Service Valve Infrared Sensor Gear Motor Drain Valve Right Side Front Panel Panel 2 Condensing Unit a SRC 14H Top Panel Compressor _ High Pressure Switch Condenser Fan Motors Right Side Panel Headmaster C P R Control Box Control Box Cover Receiver a High Side 5 Service Valve Lovv Side Left Side Panel Service Valve Louver Panel Control Low Pressure Switch Safety Low Pressure Switch 10 3 Icemaking Unit Cutter Extruding Head and Evaporator Flange Upper Bearing HE 7 Seal Bolts and Washers Evaporator Heater Auger Evaporator Mechanical Seal Socket Head Cap Screw O Ring T and Split Lock Washer Housing and Lower Bearing Hex Bolt and Washer Spline Coupling Socket Head Cap Screw and Split Lock Washer Gear Motor 11 B Seguence of Operation 1 Seguence Cycles and Shutdown The steps in the seguence are as outlined below When power is supplied the power sw
72. tion then unplug the unit from the electrical outlet Move the power switch to the ON position Allow the water to drain from the evaporator 6 Remove the top and side panels 7 Remove the strap connecting the spout to the chute assembly then remove the spout 8 Remove the cutter bolt and lift off the cutter and washer 9 Remove the seal bolts and lift off the extruding head 10 11 Place the new extruding head in place and tighten down the seal bolts Replace the washer cutter cutter bolt and spout 12 Replace the top and side panels in their correct positions 13 Move the control switch to the ICE position 14 Plug the unit into the electrical outlet then move the power switch to the ON position to start the automatic icemaking process 15 Replace the front panel in its correct position 4 Removal and Replacement of Auger 1 Remove the front panel then move the power switch to the OFF position 2 Move the control switch to the DRAIN position 4 5 Move the power switch to the OFF position then unplug the unit from the electrical outlet 3 Move the power switch to the ON position Allow the water to drain from the evaporator 6 Remove the top and side panels 8 9 Remove the cutter bolt cutter washer and dowel pin Remove the extruding head from the auger and place on the new auger 7 Remove the strap connecting the spout to the chute assembly then remove
73. tn Hoshizaki Technical Support Department Web Site www hoshizaki com NOTE To expedite assistance all correspondence communication MUST include the following information e Model Number e Serial Number Complete and detailed explanation of the problem IMPORTANT This manual should be read carefully before the icemaker is serviced Read the warnings and guidelines contained in this booklet carefully as they provide essential information for the continued safe use service and maintenance of the icemaker Retain this booklet for any further reference that may be necessary CONTENTS Important Safety OHna D ab RHY A NI 5 1 Bani a n m UCU 7 5 1 m m b 7 egin E aus 8 IL General in omlet m O L O eatin NET ieee 9 9 iM NOE ER oM i 9 oscar met TU 10 SACEMAKING n eren REG heparin de in al HRN ER FERN FARF C dd 11 B Seguente of Sui e eT eR 12 1 Sequence Cycles ad Shutdown oe go kk exe ok ank Bad 12 ci sr TC 12 p lce P rge Cycl ec 12 12 d Drain Cycle O EM M ut M 12 zie Pen eL ER 13 2 Seq nt Flow Char na NAF DAW aa 14 15 111 O o b s ni 16 2 LED Lights and Audible Alarm Safetles 17 3 Controls and FAAS I Scatter pasear ee dd GG E E 18 a Default Dip Switch SONUNMOS I a iiaa 18 b Infrared Sensor Shutdown Delay S1 dip switch 1 2
74. tup POWER OK LED on Move the control switch to the ICE position then move the power switch to the ON position The CB green POWER OK LED turns on Diagnosis POWER OK LED Check that the CB green POWER OK LED is on If not check for 24VAC from CB K8 connector pin 1 W R wire to CB K8 connector pin 2 LBU wire If 24VAC is present and CB green POWER OK LED is off replace CB 3 IS Power Supply CB supplies 20VDC to IS Diagnosis Check that IS green LED is on If IS green LED is not on check for 20VDC between CB connector K6 pin 1 DBU wire and connector K6 pin 3 BR wire See Fig 1 If 20VDC is not present replace CB nfrared Sensor 20VDC Closed 20VDC Pin 1 DBU to Pin 3 BR Pin 3 20VDC Pin 1 DBU to Pin 2 W Brown BR Red Positive OVDC Pin 2 W to Pin 3 BR lt A lTestlead BOVDC Infrared Sensor 20VDC White W id Open IS yellow LED flashing or steady 3 20VDC Pin 1 DBU to Pin 43 BR Pin 41 T Black Negative OVDC Pin 1 DBU to Pin 2 W Dark Blue DBU Test Lead 20VDC Pin 2 W to Pin 3 BR Multimeter K6 Connector Fig 1 Infrared Sensor 30 4 5VDC Output Checks Control Switch open contacts for icemaking closed contacts for drain GMPR terminals 3 8 5 MBC and F S When checking 5VDC control voltage always place the red positive test lead from the multimeter to the CB white K5 connector pin closest t
75. uedo S 47 ueuw sMejs 26s 06 1 10 suado Ag uonng 301AH3S pue 1eyeuu99i UMOP sinus go pepeeoxe 174 sesojp S 4N ueum seis pue ees a 5 e suedo U UM Depu le 1 40 174 ezooJJ eBung z el2A2 1114 7L Ssdeis ojo 9 0 h Ieuondo pesay 9 ojo 9 uq gL ul g ees eouanbes l UISID ZI UI L 104 ojgejle e SI ureJp ZL UI L e DopueululoooJ SI uieip ul jjnejep Alo108j 9 o 9 UIBIQ ZL Ul 7 b Ht L OUS Uu 9 H1NOOSI S4 1482 MOIJ eouenbes peog 104002 V J 14 C Control Board A Hoshizaki exclusive control board is employed in Hoshizaki Modular Flakers All models are pre tested and factory adjusted For a control board check procedure see IV C Control Board Check NOTICE The control board is fragile handle very carefully The control board contains integrated circuits which are susceptible to failure due to static discharge It is especially important to touch the metal part of the icemaker before handling or replacing the control board e Do not touch the electronic devices on the control board or the back of the control board Do not change wiring and connections Do not misconnect terminals Do not short out power supply to test for voltage Always replace the whole control board assembly if it goes bad 15 1 Control Board Layout Relay LEDs

Service Manual 10/28/2011

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