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1. Jossaidwoy YOUMS e1nssaJg Mo 402 x jepnno ueq YOUIMS Sore eunsseJg u iH pIS MO7 NLA Be x our d n jddns eur uonong eur pinbr Joje1odeA3 E jg cim 1 N LH 7 s 19497 1 d S NPA q ul E fan d 9A EA prougjog j JIOAJOSOH TF umoq dwnd A PA uoisuedx3 U9IIMS 1801 I N BA ala SIOJO Ue Jaye 3 Io HO ous Sd 11 lagnosis Il Sequence of Operation and Service D A Sequence of Operation Flow Chart Jayeay Jojejode oe H3 A PA UleJp AG Jeu ureJp Lg r urejp 3a Josseidwoo dwog Us eJnssaid Mo o33002 Sd12 Jayeay eseoxuelo H323 01402 82 dnyoeq jyeoi
2. Log Lise Joyeulo p HO E eBung 39 ing ulg L 0002 918 OI ees SpUnos uue e d q 6 e pue suedo zog eut umopinus o sile LOG H uwopinus 10sues paJeJjul 1981 2 Shutdown uMopinug 14642 MOL uonededo Jo eouenbes peog 0 140 Y 4 SI PON Sd 0 B Service Diagnosis The appliance 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 appliance 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 1 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 appliance has operated for 10 to 20 min catch the ice production for 10 min Weigh the ice to establish the batch weight Multiply the batch weight by 144 for the total production in 24 hours When confirming production or diagnosing low production reference production information found in VIII A Specification and Performance
3. BC1 infrared sensor Gear Motor Drain Valve Front Panel Right Side Panel Model Shown FS 1500MLH C 2 Condensing Unit a SRC 10H Top Panel Headmaster C Condenser High Side Service Valve Low Side Service Valve b SCH High Pressure Svvitch j a Compressor Fan Motor PR Control Low Pressure Right Side Panel Control Box Control Box Cover Safety Low Pressure Receiver Switch Left Side Panel Switch b SRC 14H Top Panel m Compressor Condenser Fan Motors Left Side Panel Receiver r High Side Service Valve Low Side Service Valve Control Low Pressure Switch Louver Panel High Pressure Switch Right Side Panel Control Box Control Box Cover Louver Panel Safety Lovv Pressure Svvitch 3 Icemaking Unit Extruding Head and Upper Bearing Evaporator Heater Auger Mechanical Seal O Ring Spline Coupling Socket Head Cap Screvv and Split Lock VVasher Cutter Evaporator Flange ii Seal Bolts and VVashers Evaporator Socket Head Cap Screvv and Split Lock VVasher Housing and Lovver Bearing Hex Bolt and VVasher Gear Motor ircuit Diagram B VVater Refrigeration C YMS ainssaig mo7 jejes
4. 40 5 Bin Control Selector S1 dip svvitch 7 The appliance is factory set for infrared sensor bin control operation No adiustment is required VVhen 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 51 dip switch 7 in the on position the gear motor delay after the upper float switch closes is 30 sec 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 sec WARNING Do not place S1 dip switch 7 in the off position on dispenser unit applications This could lead to icemaker movement or ice overflow S1 Dip Switch Setting Bin Control Application Gear Motor Delay BC mechanical stand alone Standard Ice Storage Bins Only BC1 infrared sensor with 6 BC Mechanical Stand Alone Shutdown Delay S1 dip switch 8 Not available when S1 dip switch 7 is on Factory set for normal operation No adjustment is required The shutdown delay is the time between the mechanical bin control proximity switch opening and the control board shutting off the icemaker Note When used in conjunction with BC1 shutdown is immediate and CB sounds a 9 beep alarm S1 Dip Switch Setting Mechanical Bin Control Shutdown Delay 0 25 Seconds 6 7 Seconds 7 Factory Use S1 Dip Switch 9 amp 10 Factory set for optimum perfo
5. Wire routing conduit and disconnect if required must meet national state and local electrical code requirements Failure to meet these code requirements could result in death electric shock serious injury fire or damage 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 Install the appliance in a location that stays above freezing Normal operating ambient temperature must be within 45 F to 100 F 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 provided in the instruction manual Do not place objects on top of the appliance The dispenser unit ice storage bin is for ice use only Do not store anything else in the dispenser unit ice storage bin I Construction and Water Refrigeration Circuit Diagram A Construction 1 Icemaker Top Panel CH BC2 mechanical backup Float Svvitch Spout nlet VVater Valve Evaporator Heater Povver Cord Cutter Extruding Head Evaporator n Ice Chute m Control Box 1 i Ix e u Thermostatic d Expansion Valve v Strainer High Side Service Valve Low Side Service Valve
6. 62 2 Condensing o tem 63 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 A WARNING Indicates a hazardous situation which could result in death or serious injury NOTICE Indicates a situation which could result in damage to the appliance or property IMPORTANT Indicates important information about the use and care of the appliance A WARNING The appliance 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 appliance 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 the appliance The appliance must be installed in accordance with applicable national state and local codes and regulations Failure to meet these code requirements could result in death electric shock serious injury fire or damage to the appliance The appliance m
7. COMP and VVTRIN LEDs are on LFS opens WV energizes and FT starts GM CCR GMPR EH PDS MC Comp and FMR continue LFS closes Nothing happens at this time Reservoir continues to fill until UFS closes When UFS closes WV de energizes FT terminates and FZT starts If UFS remains open longer than 90 sec after LFS opens FT exceeded and CB sounds a 1 beep alarm WV remains energized until UFS closes Alarm resets automatically when UFS closes Diagnosis Confirm that the water level has dropped and the UFS and LFS are open See II E 1 Float Switch Check Check that WTRIN LED is on If LFS is open and VVTRIN 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 8 W BR to a neutral LBU for 24VAC If 24VAC is not present check CB K2 9 W R to a neutral LBU for 24VAC If 24VAC is present on CB K2 9 W R and not on CB K2 8 W BR replace CB If 24VAC is present on CB K2 8 VV BR 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 UFS See II E Float Switch Check and Cleaning If UFS is closed check that WV de energizes If not check CB K2 8 W BR to a neutral LBU for 24VAC If 24VAC is present replace CB If WV d
8. 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 the charging hoses to both high and low side refrigerant 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 then open the gauge manifold valves then open the high and low 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 4 Close the low side valve and high side valve on the gauge manifold 44 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 required refrigerant charge Hoshizaki recommends only virgin
9. 331 1 13 345 1 00 FS 1022MLH C ONLY WATER gal 24HR gal 100 Ibs 84 12 100 12 BIN CONTROL SYSTEM Primary Photoelctric Sensor BC1 Infrared Sensor BIN CONTROL SYSTEM Secondary Proximity Switch BC2 Mechanical CONDENSING UNIT Air Cooled Remote Condensing Unit SRC 10H Required TOTAL REFRIGERANT CHARGE With RS COMPRESSOR R 404A 8 Ib 6 oz 3800g Icemaker 4 oz Cond Unit 8 Ib 2 oz VVith RST COMPRESSOR R 404A 9 Ib 1 oz 4100g Icemaker 4 oz Cond Unit 8 Ib 13 oz REFRIGERANT CIRCUIT PRESSURE PROTECTION in SRC 10H Auto Reset High Pressure Switch Manual Reset Low Pressure Switch Performance Data Sheet APPROXIMATE Ambient Water Temp F C ICE PRODUCTION Temp F C 50 10 70 21 90 32 PER 24 HR 832 378 803 365 784 378 356 765 347 747 340 729 331 712 324 703 320 679 309 Ibs day day 100 38 663 301 647 294 600 273 APPROXIMATE ELECTRIC 1713 2 1717 1722 CONSUMPTION 1727 1740 1731 1736 watts 100 38 1775 1789 1804 gl l ltl a 94 2 347 88 331 5 323 84 319 81 308 0 301 78 293 72 272 2 9 1 APPROXIMATE WATER 100 377 96 364 CONSUMPTION PER 24 HR 90 339 70 80 90 70 80 90 70 80 90 gal day V day 70 80 90 70 80 90 70 80 90 9 8 8 EVAPORATOR OUTLET TEMP F C 18 HEAD PRESSURE 224 PSIG kg sq cmG 233 2 2 0 5 1745 1760 9 14 10 14 10 16 560
10. Icemaker 4 oz Cond Unit 10 Ib 12 oz 61 B VViring Diagram 1 Icemaker 11 1 Es SWITCH LE ALVE ei T E 12 HR e SS 1 INTERNAL TECT 41 K TI FUSE EVA HEATE EE TALE yy EA QT T bi b 41 EAR MOTOR CAP SEE TABLE L TRANSFORME 1 B sd e 12 ed INLET O vl vay LV VALVE T LE ATE Le bn EI H TROL ITCH M H 3 beu EN ICE F LE apaan l ED DRAI TROL 8 2 l e R B LB FLOAT SWITCH g BK e LI ER LOWE d TROL EAR MOT EAR MOTOR FUSE IRE COL E B LENOID VALVE EL 2 814 E TROL RELA FS 1001 MLH e 5 jJ TECT RELA E ALE F LH Su DERI al F LH F A GREE DIP SWITCH SETT LBU LIGH E E FL P INI FS 1001VLH FF OFF OFF OFF OFF FF OFF F3 1022V1H FF OFF OFF OFF OFF FF OFF 3 Elle F 1 0071H FF OFF OFF OFF OFF FF OFF 8 HITE 1401 BR WHITE 2 BU WHITE BLUE WHITE ORANGE WHITE RE 62 ib 2 Condensing Un
11. Torque for F 1500 and Larger 25 8 ft Ib 35 N m Tighten 2 times Allow at least 5 sec in between each tightening Component nstall a new drier start capacitor and start relay Upper and nspect the upper bearing for wear See IV 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 nstall a new drier nspect 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 nstall a new gear motor capacitor 46 Evaporator Assembiy VVelded Metal Drip Pan GHO Evaporator Heater CH H Cutter Head Bolt z Cutter Cutter Upper Bearing C 2 Washer pressed into auger Extruding Head Extruding Head l M Dowel Pin J FS 1001MLH C Auxiliary Code D 0 D and Earlier FS 1500MLH C FS 1022MLH C Auxiliary Code C 0 and Earlier Auger m s Seal Bolt Washer FS 1001MLH C amp FS 1022MLH C Flange Drip Pan FS 1001MLH C Auxiliary Code D 0 and Earlier FS 1022MLH C Auxiliary Code D 0 and Earlier Evaporator FS 1500MLH C Auxiliary Code C 0 and Earlier 7 Socket Head Cap Screw and ep c Split Lock Washer Mechanical Seal O Ring Lower Bearing pressed into
12. then remove the gear motor 7 Remove the gear motor bracket and spline coupling from the old gear motor and place on the new gear motor 8 Install the new gear motor and reconnect the electrical wires 9 Replace the removed parts in the reverse order of which they were removed 10 Replace the top and side panels in their correct positions 11 Move the control switch to the ICE position 12 Plug the unit into the electrical outlet then move the power switch to the ON position to start the automatic icemaking process 13 Replace the front panel in its correct position 54 V Maintenance The appliance must be maintained in accordance vvith the instruction manual and labels provided Consult vvith your local Hoshizaki Certified Service Representative about maintenance service A WARNING Only qualified service technicians should service the appliance To reduce the risk of electric shock do not touch the icemaker power switch or control switch with damp hands Before Servicing FS Move the icemaker s power switch to the OFF position Unplug the icemaker from the electrical outlet SRC Turn off the power supply to the remote condensing unit Place the disconnect if applicable in the off position Lockout Tagout to prevent the power supply from being turned back on inadvertently CHOKING HAZARD Ensure all components fasteners and thumbscrews are securely in place after any maintenance is done to the
13. 15A 90 70 F 70 50 F 2122 4 72 2097 3 75 FS 1500MLH C amp SRC 14H 467 0 82 509 0 96 FS 1500MLH C ONLY 1165 0 0 1491 0 0 Photoelectric Sensor BC1 Infrared Sensor Proximity Switch BC2 Mechanical Air Cooled Remote Condensing Unit SRC 14H Required R 404A 11 Ib 5000 g Icemaker 4 oz Condensing Unit 10 Ib 12 oz Auto Reset High Pressure Switch Manual Reset Low Pressure Switch Ambient Water Temp F C Temp F C 70 21 1491 676 1444 627 1268 551 A Qo 528 979 444 906 2101 2104 211 2115 E e E 656 2142 173 o o 4 5 s s 00062 2118 e 100 38 2136 2149 656 529 128 ps E 0 152 118 22 11 70 21 191 191 1 213 1 273 70 2 132 23 32 23 32 90 32 36 25 36 25 36 100 8 39 27 39 27 39 27 1 400 BTU h AT 90 F WT 70 F FS 1500MLH C 3 445 109 21 10 26 513 11 15 9 15 134 150 213 ES clo 4 6 12 11 3 4 5 0 2 628 552 485 22 zl 13 4 15 0 16 6 2 3 24 2 5 HEAT OF REJECTION FROM CONDENSING UNIT 17 700 BTU h AT 90 F WT 70 F SRC 14H 60 4 SRC 10H and SRC 14H SRC 10H Specification Sheet AC SUPPLY VOLTAGE COMPRESSOR FAN MOTOR OTHER MAXIMUM FUSE SIZE MAX HACR BREAKER USA ONLY MAX CIRC BREAKER CANADA ONLY MIN
14. 9 5 1 EUN ox o o FJ 1 Li y ih sz N N w N alo o SI N N oiv o ER al am IM D N N si ole wech o N N o N N o 242 z N AR N SE 4 7 SUCTION PRESSURE PSIG kg cm G 3 3 33 HEAT OF REJECTION FROM ICEMAKING UNIT 1 130 BTU hr AT 90 F WT 70 F HEAT OF REJECTION FROM CONDENSING UNIT 10 500 BTU hr AT 90 F WT 70 F BRE C N c N wo IS N N wo N 59 3 FS 1500MLH C vvith SRC 14H Specification Sheet AC SUPPLY VOLTAGE AMPERAGE OTHER MAXIMUM FUSE SIZE MAX HACR BREAKER USA ONLY MAX CIRC BREAKER CANADA ONLY MINIMUM CIRCUIT AMPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC VV KVVH 100 lbs ELECTRIC VV KVVH 100 lbs WATER gal 24HR gal 100 Ibs BIN CONTROL SYSTEM Primary BIN CONTROL SYSTEM Secondary CONDENSING UNIT TOTAL REFRIGERANT CHARGE REFRIGERANT CIRCUIT PRESSURE PROTECTION in SRC 14H Performance Data Sheet APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day APPROXIMATE ELECTRIC CONSUMPTION watts APPROXIMATE WATER CONSUMPTION PER 24 HR gal day l day EVAPORATOR OUTLET TEMP F sc HEAD PRESSURE PSIG kg em G SUCTION PRESSURE PSIG kg em G HEAT OF REJECTION FROM ICEMAKING UNIT 120 60 1 120 V 3 6RLA 400 Watts 120 V 0 03A 15A 15A 15A
15. 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 to a neutral W 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 Condensing Unit Diagnosis Confirm that CLPS closes Once CLPS closes MC energizes energizing Comp and FMR If not check condensing unit 208 230VAC power supply breakers disconnets Next confirm 115VAC from CLPS BR wire to neutral W If 115VAC is not present check wiring connections and power supply CLPS When PDS is energized CLPS closes when refrigeration circuit low side pressure reaches 29 PSIG If CLPS is open check that refrigeration circuit low 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 If refrigeration circuit low side pressure reaches 29 PSIG and CLPS does not close replace CLPS SLPS If SLPS is open manually reset SLPS If manually resetting SLPS does not close contacts replace SLPS After resetting confirm proper TXV operation check for refrigerant restriction drier PDS and correct refrigerant charge Recover evacuate and recharge if necessary HPS If HPS is open HPS automatically resets when refrigeration circu
16. Delay S1 dip switch 1 2 3 PDS should de energize immediately after the shutdown delay timer terminates 5 min later GM should de energize Diagnosis If BC1 yellow LED is not on after covering the lens replace BC1 If the appliance remains on after BC1 shutdown delay timer terminates and the 5 min ice purge timer terminates replace CB If BC1 fails to shut down the icemaker and the level of ice activates BC2 the icemaker shuts down and a 9 beep alarm sounds To reset move the power switch to the OFF position and then back to the ON position 9 Remove the object covering the lens If you removed BC1 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 II D 2 Bin Control 2 mechanical backup Check 28 2 Bin Control 2 mechanical backup Check When the actuator paddle is not engaged BC2 is closed and the icemaker produces ice a Bin Control 2 mechanical backup With S1 dip switch 7 placed in the ON position BC2 is used as a backup bin control safety When ice fills the chute and engages the actuator paddle BC2 opens and CB immediately shuts down the icemaker and sounds a 9 beep alarm b Bin Control mechanical stand alone With S1 dip switch 7 placed in the OFF position BC is used as a stand alone bin control The stand alone application should only be used in
17. Hoshizaki standard ice storage bin applications WARNING Do not place S1 dip switch 7 in the OFF position on dispenser unit applications This could lead to icemaker movement or ice overflow When ice fills the chute and engages the actuator paddle BC opens and CB shuts down the icemaker within 10 sec 1 Remove the front and top panels 2 Move the power switch to the OFF position then unplug the appliance 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 appliance into the electrical outlet Chute Assembly Spout Model Shown FS 1500MLH C Fig 4 5 Move the power switch to the ON position to start the automatic icemaking process 6 Make sure CB GM LED is on There is a delay of at least 30 sec before CB GM LED turns on after power up After CB GM LED turns on press CB SERVICE button to bypass the 5 min ice purge cycle WARNING Risk of electric shock Care should be taken not to touch live terminals CB COMP LED turns on 29 7 Press the actuator paddle located in the top of the chute S1 dip svvitch 7 in the ON position PDS and GM de energize and CB sounds a 9 beep alarm S1 dip switch 7 in the OFF position PDS and GM de energize BC 2 Diagnosis If BC 2 does not open or th
18. Remove the top and side panels Remove the strap connecting the spout to the chute assembiy then remove the spout A Remove the bolt if applicable or cutter and lift off the cutter nstall the nevv cutter Replace the bolt if applicable 6 Replace the spout N Replace the top and side panels in their correct positions co Plug the unit into the electrical outlet then move the power switch to the ON position 9 Replace the front panel in its correct position 49 IMPORTANT Seal Bolt Removal and Installation Instructions Seal bolts must be replaced once removed because seal material is one time use only If new seal bolts do not have preapplied threadlocker apply Loctite 243 or equivalent threadlocker to seal bolt threads Torque for FS 1001 and Smaller 11 1 ft lb 15 N m Torque for FS 1500 and Larger 25 8 ft Ib 35 N m Tighten 2 times Allow at least 5 sec in between each tightening 3 Removal and Replacement of Extruding Head 1 Drain the water from the evaporator a Remove the front panel then move the power switch to the OFF position b Move the control switch to the DRAIN position c Move the power switch to the ON position and allow the water to drain from the evaporator d Move the power switch to the OFF position then unplug the unit from the electrical outlet 2 Remove the top and side panels 3 Remove the strap connecting the spout to the chute assembly th
19. appliance Make sure that none have fallen into the dispenser unit ice storage bin 55 A Maintenance Schedule The maintenance schedule belovv is a guideline More frequent maintenance may be required depending on water quality the appliance s environment and local sanitation regulations Maintenance Schedule Clean the ice scoop using a neutral cleaner Rinse thoroughly after cleaning Monthly External Water Filters Icemaker Exterior Infrared Sensor Lens Underside of Icemaker and Top Kits Bin Door and Snout Every 6 Icemaker and Months Dispenser Unit Ice Storage Bin Evaporator Condensate Drain Pan and Gear Motor Drain Pan Icemaker and Dispenser Unit Ice Storage Bin Drains Extruding Head Seal Bolts Check for proper pressure and change if necessary Wipe down with a clean soft cloth Use a damp cloth containing a neutral cleaner to wipe off oil or dirt build up Clean any chlorine staining rust colored spots using a non abrasive cleanser Wipe down with a clean cloth and warm water Clean and sanitize per the cleaning and sanitizing instructions provided in the instruction manual or on maintenance label Wipe down with a clean cloth and warm water Slowly pour one cup of sanitizing solution prepare as outlined in the sanitizing instructions provided in the instruction manual into the evaporator condensate drain pan and then slowly pour one cup into the gear motor drain pan Be careful not to overflo
20. auger 50 7 Replace the removed paris in the reverse order of vvhich they vvere removed Note Be sure to use new seal bolts See Seal Bolt Removal and Installation nstructions above 8 Replace the top and side panels in their correct positions 9 Move the control switch to the ICE position 10 Plug the unit into the electrical outlet then move the povver svvitch to the ON position to start the automatic icemaking process 11 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 Drain the water from the evaporator a Remove the front panel then move the power switch to the OFF position b Move the control switch to the DRAIN position c Move the power switch to the ON position and allow the water to drain from the evaporator d Move the power switch to the OFF position then turn off the power supply 2 Remove the top and side panels 3 Recover the refrigerant and store it in an approved container 4 Remove the strap connecting the spou
21. power supply to the remote condensing unit Place the disconnect if applicable in the off position Lockout Tagout to prevent the power supply from being turned back on inadvertently Do not make any alterations to the icemaker or condensing unit Alterations could result in electric shock injury fire or damage to the appliance CHOKING HAZARD Ensure all components fasteners and thumbscrews are securely in place after the appliance is serviced Make sure that none have fallen into the dispenser unit ice storage bin Make sure all food zones in the icemaker and dispenser unit ice storage bin are clean after service A Refrigeration Circuit Service Information A WARNING Repairs requiring the refrigeration circuit to be opened must be performed by properly trained and EPA certified service personnel 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 NOTICE Always recover the refrigerant and store it in an approved container Do not discharge the refrigerant into the atmosphere Do not leave the system open for longer than 15 min when replacing or servicing parts The Polyol Ester POE oils used in R 404A applications can absorb moisture quickly Therefore it is important to prevent
22. refrigerant or reclaimed refrigerant which meets AHRI Standard 700 latest edition be used 6 A liquid charge is required when charging an R 404A system to prevent fractionation Place the service cylinder on the scales if the service cylinder is not equipped 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 liquid 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 liquid dispensing device to add the remaining liquid charge through the low side service valve with the icemaker running 9 Close the high and low side gauge manifold valves then disconnect the gauge manifold hoses 10 Cap the service valves to prevent a possible leak 45 B Component Service information NOTICE When replacing a component listed below see the notes to help ensure proper operation When replacing evaporator assembly and water circuit components make sure there are no water leaks after the repair is complete e Seal bolts must be replaced once removed because seal material is one time use only If new seal bolts do not have preapplied threadlocker apply Loctite 243 or equivalent threadlocker to seal bolt threads Tighten to the torque values listed below Torque for F 1001 and Smaller 11 1 ft Ib 15 N m
23. with pressurized air for leak testing 16 Evacuate the system and charge it vvith refrigerant See the rating label inside the icemaker for the required refrigerant charge Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard 700 latest edition be used 17 Replace the removed parts in the reverse order of which they were removed Note Be sure to use new seal bolts See Seal Bolt Removal and Installation Instructions earlier in this section 18 Replace the top and side panels in their correct positions 19 Move the control switch to the ICE position 20 Plug the unit into the electrical outlet then move the power switch to the ON position to start the automatic icemaking process 21 Replace the front panel in its correct position 6 Removal and Replacement of Mechanical Seal and Lower Housing 6a Mechanical Seal 1 Drain the water from the evaporator a Remove the front panel then move the power switch to the OFF position b Move the control switch to the DRAIN position c Move the power switch to the ON position and allow the water to drain from the evaporator d Move the power switch to the OFF position then turn off the power supply 2 Remove the top and side panels 4 5 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
24. 5 W O and CB K9 5 W O and K9 6 W O After 5VDC circuit closes 5 min ice purge timer starts To bypass the 5 min 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 Diagnosis If GM LED is off check that UFS closes and WV de energizes If UFS is closed 30 sec has passed and GM LED remains off replace CB If GM LED is on and GM is off check CB K1 3 BR to a neutral W for 115VAC If 115VAC is not present check 115VAC power supply If 115VAC is present check CB K1 2 W BK to a neutral W If 115VAC is present on CB K1 3 BR and not on CB K1 2 W BK replace CB If 115VAC is present on CB K1 2 W BK check GM fuse GM internal protector GM windings and capacitor and GM coupling between auger and GM When GM energizes CCR GMPR energizes starting 5 min ice purge timer 9 Freeze Cycle COMP and GM LEDs are on Note CB X1 relay energizes the PDS pump down solenoid not the MC magnetic contactor The 5 min ice purge timer terminates GM EH and CCR GMPR continue PDS energizes Once the refrigeration circuit low side pressure reaches 29 PSIG CLPS closes energizing MC MC then energizes Comp and FMR CCH de energizes Ice production starts 4 to 6 min after Comp energizes depending on ambient and water conditions As ice is produced the water level in the reservoir drops UFS opens Nothing happen
25. B WTRIN LED turns off FZT and 30 sec GM delay timer start If UFS remains open longer than 90 sec after LFS opens FT exceeded and CB sounds a 1 beep alarm WV remains energized until UFS closes Alarm resets automatically when UFS closes Diagnosis If reservoir is empty and WTRIN LED is off confirm LFS status See II E 1 Float Switch Check If LFS 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 WTRIN LED is on and WV is off check CB K2 8 W BR to a neutral LBU for 24VAC If 24VAC is not present check CB K2 9 W R to a neutral LBU for 24VAC If 24VAC is present on CB K2 9 W R and not on CB K2 8 W BR replace CB If 24VAC is present on CB K2 8 VV BR 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 UFS See II E 1 Float Switch Check If UFS is closed check that WV de energizes If not check CB K2 8 W BR to a neutral LBU for 24VAC If 24VAC is present replace CB If WV de energizes and water continues to fill the reservoir replace WV 8 Ice Purge Cycle GM LED is on 30 sec GM delay timer terminates GM EH and CCR GMPR energize Once CCR GMPR energizes 5VDC circuit closes through CCR GMPR terminal 3 W O and terminal
26. B K6 1 DBU and CB K6 3 BR See Fig 1 If 20VDC is not present replace CB If 20VDC is present confirm that the yellow LED is not flashing or steady If BC1 yellow LED is on or flashing move ice away from lens If no ice is present clean the lens with a warm clean damp cloth If cleaning the lens does not work replace BC1 infrared sensor BC1 infrared sensor 20VDC Closed 20VDC K6 1 DBU to K6 3 BR K6 3 20VDC K6 1 DBU to K6 2 W Brown 27 Red Positive OVDC K6 2 W to K6 3 BR A3 Test Lead O BC1 infrared sensor 20VDC White W Open yellow LED flashing or steady L gt 20VDC K6 1 DBU to K6 3 BR K6 1 T Black Negative OVDC K6 1 DBU to K6 2 W Dark Blue DBU Test Lead 20VDC K6 2 W to K6 3 BR Multimeter K6 Connector Fig 1 BC1 Infrared Sensor 22 4 5VDC Output Checks CB K9 Connector Control Switch CB K9 1 and 2 open contacts for icemaking closed contacts for drain Jumper CB K9 3 and 4 Compressor Control Relay Gear Motor Protect Relay K9 5 and 6 CB K8 Connector Bin Control 2 K8 3 and 4 and Float Switch K8 5 common 6 lower and 7 upper When checking 5VDC control voltage always place the red positive test lead from the multimeter to the CB white K5 pin closest to the CB red K4 connector See Fig 2 Then place the black negative test lead from the multimeter to the correspond
27. CB K9 6 W O 5VDC is present from CB white K5 connector pin closest to CB red K4 connector to CB K9 5 W O at all times If 5VDC is not present replace CB When CCR GMPR terminals 3 W O and 4 W O are open CCR GMPR de energized 5VDC is present between CB K9 5 W O and CB K9 6 W O When CCR GMPR terminals 3 W O and 4 W O are closed CCR GMPR energized 5VDC is present between CB K9 5 W O and CB K9 6 W O When CCR GMPR terminals 3 W O amp 5 W O are open CB may be in an 8 beep alarm See III A 2 LED Lights and Audible Alarm Safeties 23 c Bin Control 2 mechanical backup CB K8 3 GY and CB K8 4 GY 5VDC is present from CB white K5 connector pin closest to CB red K4 connector to CB K8 3 GY at all times If 5VDC is not present replace CB When BC2 is closed calling for ice 5VDC is present from CB white K5 connector pin closest to CB red K4 connector to CB K8 3 GY and CB K8 4 GY If 5VDC is not present to either CB K8 3 GY or CB K8 4 GY replace CB If 5VDC is present at CB K8 3 GY and not to CB K8 4 GY BC2 is open See II D 2 Bin Control 2 mechanical backup Check d Float Switch LFS and UFS CB K8 5 BK common CB K8 6 R upper and CB K8 7 DBU lower 5VDC is present from CB white K5 connector pin closest to CB red K4 connector to CB K8 5 BK common at all times If not replace CB 5VDC is present from CB white K5 connector pin closest to CB
28. CE Button Ice Purge Cycle Bypass K8 Connector 24VAC and 5VDC Control Transformer 24VAC Input 1 white red Control Transfomer 24VAC Neutral 2 light blue Bin Control 2 mechanical backup Tp 3 amp 4 gray 5VDC e Float Switch Common A8 black 5VDC o Upper Float Switch 6 red Lower Float Switch 7 blue K7 Connector Open j TEMA POWER OK LED Dispensing LEDs not used on this model J2 Connector Open K3 Connector Open K4 Connector Open K5 Connector Open F A Control Board 26 K6 Connector 20VDC Bin Control 1 infrared sensor dark blue white signal common brown ground D Bin Control Check 1 Bin Control 1 infrared sensor Check IMPORTANT Make sure S1 dip switch 7 is in the ON position This allows the control board to monitor the BC1 infrared sensor along with the BC2 mechanical backup bin control 1 Remove the front panel 2 Move the power switch to the OFF position then unplug the appliance from the electrical outlet 3 Remove the control box cover and access CB Confirm that S1 dip switch 1 2 3 are in the proper position for your application See III B 2 BC1 Infrared Sensor Shutdown Delay S1 dip switch 1 2 3 4 Confirm that BC1 is connected to CB K6 connector Wipe down the lens with a warm clean damp cloth If the bottom of the icemaker is not accessible in your application rem
29. City GA 30269 Attn Hoshizaki Technical Support Department Web Site www hoshizaki com NOTE To expedite assistance all correspondence communication MUST include the following information Model Number Serial Number Complete and detailed explanation of the problem IMPORTANT This manual should be read carefully before the appliance is serviced Read the warnings and guidelines contained in this manual carefully as they provide essential information for the continued safe use service and maintenance of the appliance Retain this manual for any further reference that may be necessary CONTENTS Important Safety e Le EE 5 I Construction and Water Refrigeration Circuit Diagram ee 8 POSU ID scusate Scena E UN r 8 Heu cT 8 mes eT E DU s l 9 Meis TT 10 B Water Refrigeration Circuit DISSESITIs oie eda a iEn ta 1 1 1 1 1 1 11 Il Sequence of Operation and Service Diagnose 12 A Sequence or Operation 12 iM Icemaking and Drain Cycle esc 12 2 11100 a sr 13 EE Diagnosis NC ER 14 C Control Board 22 UrmlnN a E DU TR 27 E Float Switch Check and Cleaning EE 31 F Diagnostic T D ES rem 33 Ill Controls and PAINS TS NG 36 A Control Board E 36 Control Board Cayol o b s 37 2 LED Lights and Audible Alarm Safetles 38 OZEL Cycle e qot eiu 39 B COMMONS and E a
30. Data 2 Diagnostic Procedure This diagnostic procedure is a sequence check that allovvs you to diagnose the electrical system and componenis Before proceeding check for correct installation proper voltage per appliance nameplate and adequate water pressure 10 PSIG to 113 PSIG Check that both the 24VAC circuit fuse and the 115VAC GM fuse are good Note e When checking high voltage 115VAC always choose a neutral W wire to establish a good neutral connection When checking low voltage 24VAC always choose a neutral LBU wire to establish a good neutral connection When checking control board DC voltage 5VDC always place the red positive test lead from the multimeter to CB K5 pin closest to CB K4 connector See II C Control Board Check When checking BC1 infrared sensor 20VDC check that BC1 infrared sensor green LED is on This green LED confirms 20VDC power from CB K6 to BC1 infrared sensor and remains on constantly If green LED is not on check for 20VDC from CB K6 1 DBU to CB K6 3 BR See II D 1 Bin Control 1 infrared sensor Check To speed up the diagnostic process the 5 min ice purge cycle may be bypassed by pressing the SERVICE button on the control board after the gear motor starts WARNING Risk of electric shock Care should be taken not to touch live terminals e f the icemaker is in alarm see III A 2 LED Lights and Audible Alarm Safeties EH energizes when GM LED turns o
31. Hoshizaki America nc Modular Cubelet Serenity Series vvith F A Control Board Models FS 1001MLH C with SRC 10H FS 1022MLH C with SRC 10H FS 1500MLH C with SRC 14H SERVICE MANUAL A Superior Degree of Reliability www hoshizaki com Number 73203 Issued 1 5 2015 Revised 1 7 2015 A WARNING Only qualified service technicians should install and service the appliance 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 appliance 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 of the appliance 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 9 hoshizaki com HOSHIZAKI AMERICA INC 618 Highway 74 South Peachtree
32. IMUM CIRCUIT AMPACITY CONNECTIONS ELECTRIC REFRIGERATION CIRCUIT REFRIGERANT CIRCUIT PRESSURE PROTECTION in SRC 10H REFRIGERANT CONTROL PUMPDOWN CONTROL TOTAL REFRIGERANT CHARGE With RS COMPRESSOR With RST COMPRESSOR SRC 14H Specification Sheet AC SUPPLY VOLTAGE COMPRESSOR FAN MOTOR EACH OTHER MAXIMUM FUSE SIZE MAX HACR BREAKER USA ONLY MAX CIRC BREAKER CANADA ONLY MINIMUM CIRCUIT AMPACITY CONNECTIONS ELECTRICAL REFRIGERATION CIRCUIT REFRIGERANT CIRCUIT PRESSURE PROTECTION in SRC 14H REFRIGERANT CONTROL PUMPDOWN CONTROL TOTAL REFRIGERANT CHARGE 208 230 60 1 3 WIRE WITH NEUTRAL 208 230 6 5 RLA 46 LRA 120V 3A MAX 120V 0 5A 20A 20A 20A 20A Permanent Connection Discharge line 1 1 16 12 UNF Fitting 410 AEROQUIP Liquid line 5 8 18 UNF Fitting 6 AEROQUIP Auto Reset High Pressure Switch Manual Reset Low Pressure Switch Headmaster C P R 210 PSIG Auto Reset Low Pressure Switch R 404A 8 Ib 6 oz 3800g Icemaker 4 oz Cond Unit 8 Ib 2 oz R 404A 9 Ib 1 oz 4100g Icemaker 4 oz Cond Unit 8 Ib 13 oz 208 230 60 1 3 WIRE WITH NEUTRAL 208 230 6 9 RLA 56 LRA 120 V 3A MAX 120 V 0 2A 20A 20A 20A 20A Permanent Connection Discharge line 1 1 16 12 UNF Fitting 10 PARKER Liquid line 5 8 18 UNF Fitting 6 PARKER 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
33. ay DV drain valve EH evaporator heater FMR fan motor s remote FT fill timer 90 sec low water safety timer FZT freeze timer 30 min freeze safety timer GM gear motor PDS pump down solenoid valve WV inlet water valve 38 3 Ice Purge Cycle Bypass To speed up the diagnostic process the 5 min ice purge cycle may be bypassed by pressing the SERVICE button on the control board after the gear motor starts WARNING Risk of electric shock Care should be taken not to touch live terminals B 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 your Hoshizaki Certified Service Representative 1 Default Dip Switch Settings The S1 dip switch settings are factory set to the following positions wet ee ee FS 1001MLH C ON OFF OFF OFF OFF OFF ON ON OFF OFF Normally off factory use Bin Control Shutdown Delay BC mechanical stand alone Bin Control Selector Continuous Dispensing Timer DCM models only do not adjust on modular icemakers Drain Frequency Control Bin Control Shutdown Delay BC1 infrared sensor 39 2 BC1 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 LED flashing or steady and the start of the shutdown sequenc
34. cci ie a EHE XR ACTED ERG UR TU EUER a 39 1 Default Dip Switch Settings eadeni datus Rice a uiua Ee 39 2 BC1 Infrared Sensor Shutdown Delay S1 dip switch 1 2 3 40 3 Drain Frequency Control S1 dip switch A 40 4 Continuous Dispensing Timer S1 dip switch 5 6 2222 40 5 Bin Control Selector S1 dip switch 7 una agetur ib FERME yad 41 6 BC Mechanical Stand Alone Shutdown Delay S1 dip switch 8 41 7 Factory Use S1 Dip Switch 9 amp 10 cuique ada babaya d d 41 C Power Switch and Control Eeer 42 IV Refrigeration Circuit and Component Service 43 A Refrigeration Circuit Service Information 5 o eret te ria 43 B Component Service IIndteffrTeltIll snae tenter rx ERROR E a RAR d b 46 V Maintenance dee 55 CIE Re ee ee s nn 57 VIL Technical information 58 A Specification and Performance Data sss iii eene 58 1 FS 1001MLH C with RO OH iius isa ua ana h ndn KE xp aaa 58 2 FS 1022MLH C with SRG 10H e rernm tat nnnm n sn Rada Rada aaa axa aexkazakasa 59 3 FS 1500MLH C With 5 14 2 nna Ra Ra Ra asa naa a a dak aka k aroma una 60 4 SRC 10H and SRC 14H Xni na 61 B Wining L ee ENT IUIUS 62
35. d 56 VI Disposal The appliance contains refrigerant and must be disposed of in accordance vvith applicable national state and local codes and regulations Refrigerant must be recovered by properly certified service personnel 57 VII Technical information A Specification and Performance Data 1 FS 1001MLH C vvith SRC 10H Specification Sheet AC SUPPLY VOLTAGE 115 60 1 GEAR MOTOR 120 V 3 FLA 200 VVatts OTHER 120 V 0 03A MAXIMUM FUSE SIZE 15A MAX HACR BREAKER USA ONLY 15A MAX CIRC BREAKER CANADA ONLY 15A MINIMUM CIRCUIT AMPACITY 15A ELECTRIC amp WATER CONSUMPTION 90 70 F 70 50 F ELECTRIC W kWH 100 lbs 1745 6 26 1713 4 94 FS 1001MLH C amp SRC 10H ELECTRIC W kWH 100 lbs 331 1 13 345 1 00 FS 1001MLH C ONLY WATER gal 24HR gal 100 Ibs 84 12 100 12 BIN CONTROL SYSTEM Primary Photoelctric Sensor BC1 Infrared Sensor BIN CONTROL SYSTEM Secondary Proximity Switch BC2 Mechanical CONDENSING UNIT Air Cooled Remote Condensing Unit SRC 10H Required TOTAL REFRIGERANT CHARGE With RS COMPRESSOR R 404A 8 Ib 6 oz 3800 Icemaker 4 oz Cond Unit 8 Ib 2 oz With RST COMPRESSOR R 404A 9 Ib 1 oz 4100g Icemaker 4 oz Cond Unit 8 Ib 13 oz REFRIGERANT CIRCUIT PRESSURE PROTECTION in SRC 10H Auto Reset High Pressure Switch Manual Reset Low Pressure Switch Performance Data Sheet APPROXIMATE Ambient Water Temp F C ICE PRODUCTION Temp F C PER 24 HR 70 21 832 z
36. d FS float switch GM gear motor LFS lovver float switch UFS upper float switch 1 Float Switch Assembly d te Reservoir Cover Y Reservoir Fig 6 32 F Diagnostic Tables Before consulting the diagnostic charts check for correct installation proper voltage per appliance nameplate and adequate water supply Check control board using the steps in II C Control Board Check 1 No Ice Production CSCS T 1 Power Supply Power Supply SAC 2 Water Supply 3 Power Switch a OFF position b Bad contacts 115VAC 24VAC amp 1A Fuse Control Box 6 Conirol Board See ILC Control Board Check 7 Control Switch 8 BCT infrared sensor 9 BCE mechanical backup 1 Control Board 2 Inlet Water Valve 3 Fat Switch 33 1 Control Boar 2 Gear Motor 1 Compressor Control Relay Gear a No voltage from gear motor Motor Protect Relay control relay gear motor relay condition Defective Pump Down Solenoid Valve 4 Control Low Pressure Switch 5 Safety Lou Pressure Switch manual reset 6 High Pressure Switch 8 Condensing Unit Fan Motors 9 Compressor a Start or run capacitor defective b Start relay defective c Defective 10 Refrigerant Line a Gas leaks b Refrigerant line or component restricted TXV not adjustable 12 Evaporator 14 Drain Valve 34 1 Float Switch 277 7755 4 Contro Board 7775005 Shutdown 0 1 Bin Contr
37. e 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 sec 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 557 nu g Infrared Sensor Shutdown Delay ON OFF OFF 100 Seconds 16 minutes Factory Default 3 Drain Frequency Control S1 dip switch 4 The appliance 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 Settin Drain Timer Interval Drain Valve Open OFF 1 in 1 ON 1 in 12 11 Hours 45 Minutes 4 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 solenoid is activated S1 Dip Switch Settin m NODE 200 n m 2
38. e 80 26 340 90 32 lbs day kg day 100 38 301 294 600 APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 26 90 32 watts 100 38 APPROXIMATE WATER 70 21 100 94 CONSUMPTION PER 24 HR 80 26 92 88 90 32 85 81 gal day l day 100 38 80 EVAPORATOR OUTLET TEMP 70 21 14 16 18 F C 80 26 14 90 32 16 100 38 18 i8 7224 224 233 233 242 HEAD PRESSURE 70 21 PSIG kg cm G 80 26 233 198 29 90 32 30 100 38 31 HE au co o 2 gle 2 E d OND o 5 ES 4 8 o A NIN 219 e NIN SNE E MINE SIN w A o OAI BI OIN S 5 l oO R N SUCTION PRESSURE 70 21 29 29 PSIG kg em G 80 26 30 30 90 32 31 MEH 100 38 33 33 HEAT OF REJECTION FROM ICEMAKING UNIT 1 130 BTU hr SE y F WT 70 F HEAT OF REJECTION FROM CONDENSING UNIT 10 500 BTU hr AT 90 F WT 70 F N o N sikis BS SG F Az 58 2 FS 1022MLH C vvith SRC 10H Specificaiton Sheet AC SUPPLY VOLTAGE 115 60 1 GEAR MOTOR 120 V 3 FLA 200 Watts OTHER 120 V 0 03A MAXIMUM FUSE SIZE 15A MAX HACR BREAKER USA ONLY 15A MAX CIRC BREAKER CANADA ONLY 15A MINIMUM CIRCUIT AMPACITY 15A ELECTRIC amp WATER CONSUMPTION 90 70 F 70 50 F ELECTRIC W kWH 100 lbs 1745 6 26 1713 4 94 FS 1022MLH C amp SRC 10H ELECTRIC W kWH 100 Ibs
39. e energizes and water continues to fill the reservoir replace WV FT 90 Sec Low Water Safety Timer When LFS opens 90 sec low water safety timer starts If UFS does not close within 90 sec after LFS opens FT exceeded CB sounds a 1 beep alarm and a 90 sec shutdown cycle starts See 11 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 FMR GM CCR GMPR and EH continue 90 sec purge timer terminates GM EH and CCR GMPR de energize WV and 1 beep alarm continue until UFS closes 11 Drain Cycle a 1 in 1 Drain Cycle DV energizes once every hour when the 1 in 1 drain cycle is activated S1 dip svvitch 4 in the OFF position factory default position GM and PDS continue DV energizes for 2 sec every hour This setting is recommended for optimum icemaker performance The 1 in 1 drain cycle allows any sediment to drain from the evaporator vvithout interrupting the icemaking process b 1 in 12 Drain Cycle optional DV energizes once every 12 hours vvhen the 1 in 12 drain cycle is activated S1 dip switch 4 in the on position optional 12 hour drain cycle timer terminates PDS de energizes GM continues The 5 min ice purge timer starts When the 5 min ice purge timer terminates GM de energizes 10 min DT starts DV energizes After 10 min DT terminates DV de energizes and 12 hour drai
40. e icemaker continues to make ice check that the actuator paddle is moving freely Confirm that the actuator paddle is engaged Check for continuity across BC 2 wires If BC 2 contacts are found open and the icemaker continues to make ice replace CB If BC 2 is closed with the actuator paddle engaged replace BC 2 8 Move the power switch to the OFF position then unplug the appliance from the electrical outlet 9 Replace the chute assembly and strap in their correct positions 10 11 12 13 Replace the control box cover and top panel in their correct positions Plug the appliance into the electrical outlet Move the power switch to the ON position to start the automatic icemaking process Replace the front panel in its correct position Legend BC bin control mechanical stand alone BC1 bin control 1 infrared sensor BC2 bin control 2 mechanical backup CB control board GM gear motor PDS pump down solenoid valve 30 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 the OFF position and the control switch to the ICE position 5 Unplug the appliance from the electrical outlet 6 Remove the control box cover 7 Disconnect FS connector
41. e the bolt if applicable or cutter from the auger and lift off the cutter and washer if applicable 02 Round Stock 5 Replace the bolt in the auger if applicable See Fig 9 9 Pin Gauge Bolt if applicable Move the auger towards you and then try to insert a 02 round stock or pin gauge in between the back side of the Auger 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 1 the lower bearing in the lower housing should be replaced Instructions for removing the extruding head and lower Fi g 9 housing are located later in this procedure Note Replacing the bearing requires a bearing press adaptor f one is not available replace the vvhole extruding head and lovver housing Pd Extruding Head 6 7 8 9 10 Replace the front panel in its correct position Replace the washer if applicable cutter and cutter bolt if applicable Replace the spout Replace the top and side panels in their correct positions SS o Plug the unit into the electrical outlet then move the power switch to the ON 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 N a
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43. en remove the spout 4 Remove the cutter bolt if applicable or cutter and lift off the cutter and washer if applicable 5 Remove the seal bolts and lift off the extruding head 6 Place the new extruding head in place and tighten down with new seal bolts See Seal Bolt Removal and Installation Instructions above 7 8 9 10 Plug the unit into the electrical outlet then move the power switch to the ON position 11 Replace the front panel in its correct position Replace the washer if applicable cutter cutter bolt if applicable and spout Replace the top and side panels in their correct positions Move the control switch to the ICE position 4 Removal and Replacement of Auger 1 Drain the water from the evaporator a Remove the front panel then move the power switch to the OFF position b Move the control switch to the DRAIN position c Move the power switch to the ON position and allow the water to drain from the evaporator d Move the power switch to the OFF position then turn off the power supply 2 Remove the top and side panels 3 Remove the strap connecting the spout to the chute assembly then remove the spout 4 Remove the extruding head seal bolts Using the cutter lift out the auger assembly 5 Remove the cutter bolt if applicable cutter washer if applicable and dowel pin if applicable Remove the extruding head from the auger and place on the new auger 6 Install the new
44. from CB K8 connector and check FS continuity Both the UFS and LFS should be open Check continuity between CB KS 5 BK common and CB K8 6 R UFS Next check continuity between CB K8 5 BK common and CB K8 17 BU LFS If both are open continue to step 5 If either are closed follow the steps in II E 2 Float Switch Cleaning After cleaning FS check UFS and LFS again Replace if necessary 8 Reconnect FS connector to CB K8 connector 9 Plug the appliance 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 appliance from the electrical outlet 12 Disconnect FS connector from CB K8 connector and check FS continuity Both the UFS and LFS should be closed Check continuity between CB K8 5 BK common and CB K8 6 R UFS Next check continuity between CB K8 5 BK common and CB K8 7 BU LFS If either are open follow the steps in EZ Float Switch Cleaning After cleaning FS check UFS and LFS again Replace if necessary Red R upper float switch Black BK Dark Blue DBU lower float switch Magnet towards top Upper Float blue l Spring Retainer Clip Magnet tovvards top Lower Float white Plastic Retainer Clip 13 Replace CB K8 connector in its correct position Replace the con
45. ician 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 Failure to properly ground the icemaker could result in death or serious injury Do not use an extension cord 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 place fingers or any other objects into the ice discharge opening SRC The remote condensing unit 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 Electrical connection must be hard wired to the remote condensing unit and must meet national state and local electrical code requirements Failure to meet these code requirements could result in death electric shock serious injury fire or damage THE REMOTE CONDENSER UNIT MUST BE GROUNDED The power supply and ground connection to the remote condenser unit are supplied from the icemaker Failure to properly ground the remote condenser unit could result in death or serious injury
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47. ing pin to complete the 5VDC check Red positive test lead to vvhite re connector pin closest to red K4 connecotor Control Switch e white black W BK Black Negative Test Lead Red Positive SHIT b _ Yellow Jumper Y mi O Multimeter Sec eck eck SX Test Lead NIC s Je a NA DES Tr T 22 07 Sess LI lt Compressor Control Relay MEN 2 7 Gear Motor Protect Relay OT terminals 3 and 5 white orange W O Control Board K9 Connector Fig 2 a Control Switch CB K9 1 W BK and CB K9 2 W BK 5VDC is present between CB white K5 connector pin closest to CB red K4 connector and CB K9 1 W BK 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 between CB white K5 connector pin closest to CB red K4 connector and CB K9 2 W BK When in the ICE position 5VDC is present from CB K9 1 W BK to CB K9 2 W BK When the control switch is in the DRAIN position the control switch contacts are closed 5VDC is present between CB white K5 connector pin closest to CB red K4 connector to CB K9 1 W BK or 2 W BK If 5VDC is not present replace CB OVDC is present from CB K9 1 W BK to CB K9 2 W BK b Compressor Control Relay Gear Motor Protect Relay CCR GMPR CB K9 5 W O and
48. it 208 230 60 1 208 230 60 1 3 WIRE WITH NEUTRAL LI 2 1 LI L2 N GND r M BK BR W WIRE COLOR CODE BK BLACK BR BROWN RUN CAP COMP BU BLUE AN SEE TABLE DBU DARK BLUE R e SEE TABLE R R R WES 24 E BK BR LH 2 0 1 9 BU LIGHT BLUE e O ORANGE DBU KE P PINK 5 BK yo r WO WHITE START RELAY Y YELLOW R R WIBA WHITE BROWN ek w WB M TE BLUE MAGNETIC CONTACTOR R W O WHITE ORANGE i3 3 BK W R WHITE RED LBR 6 DBU mn DBU BR L2 2 R BK BE Llo lt BK pK BK BR COM Ong CRANKCASE HEATER 482 c P BK yy hn MODEL RUN CAP START CAP C2 CI W DBU CAP SRC 10 24MFD 108 150MP0 FAN MOTOR 10 MFD 330VAC R BR 145 114 MF D T SRC 14 MFD QD W 5 220VAC W BK p d FAN MOTOR 0 gen BR BK d 1 Ww e 50 0 0 5 0 0 0 e i CONTROL LOW SAFETY LOW HIGH PRESS PRESS SWITCH PRESS SWITCH SWITCH CLPS SLPS HPS Control Low Pressure Switch Safety Low Pressure Switch Cut in 2949 PSIG Manual Reset High Pressure Switch 384 PSIG 28422 PSIG 0 Differential 20 32PSIG 57 342 5 PSIG Cut out 9 PSIG Differential 6 PSIG 63
49. it high side pressure is within an acceptable range If HPS does not reset open allow pressures to equalize and HPS to reset If refrigeration circuit high side pressure does not drop recover evacuate and recharge if necessary Before restarting the appliance check for dirty or clogged condenser Once the appliance 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 for 115VAC at MC C2 O to neutral W If 115VAC is not present check CLPS SLPS and HPS contacts If 115VAC is present check MC coil continuity If open replace MC If closed check MC L1 and MC L2 to a neutral W for 115VAC 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 to MC T2 R 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 FMR does not energize check MC T3 DBU to a neutral W for 115VAC If 115VAC is present and FMR does not energize check fan motor capacitors and motor windings If 115VAC is not present replace MC 10 Refill Cycle GM
50. lower housing Truss Head Screw w Rubber uisi cr i Hex Bolt and Washer Gear Motor Barrier Lower Housing Socket Head Cap Screw and Split Lock Washer Fig 7 Evaporator Assembiy Removable Rubber Drip Pan Cutter E RL Fs 1001MLH C Auxiliary Code D 0 E and Later FS 1022MLH C Auxiliary Code D 0 and Later Upper Bearing pressed into auger i Extruding Head Auger Flange FS 1001MLH C Auxiliary Code D 1 and Later FS 1022MLH C Auxiliary Code D 1 and Later Seal Bolt Drip Pan FS 1001MLH C Auxiliary Code D 1 and Later FS 1022MLH C Auxiliary Code D 1 and Later FS 1500MLH C Auxiliary Code C 1 and Later Socket Head Cap Screw and Split Lock Washer Mechanical Seal 3 O Ring ES Lower Bearing pressed into lower housing Hex Bolt and Washer Truss Head Screw w Rubber Washer Gear Motor Barrier Tw 3 Gear Motor Lovver Housing Spline Coupling R Socket Head Cap Screw and Split Lock Washer Fig 8 48 1 Upper Bearing VVear Check To ensure that the bearing inside the extruding head does not exceed the vvear 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 Remove the top and side panels 3 Remove the strap connecting the spout to the chute assembly then remove the spout 4 Remov
51. 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 43 1 Refrigerant Recovery Using proper refrigerant practices recover the refrigerant Recover via the service valves Store the refrigerant in an approved container Do not discharge the refrigerant into the atmosphere 2 Brazing A WARNING e R 404A itself is not flammable at atmospheric pressure and temperatures up to 176 F 80 C e 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 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
52. n CB X1 relay energizes PDS After PDS energizes CPLS closes then MC energizes energizing Comp and FMR CB monitors the following switches with 5VDC during the icemaking process Control Switch CS Compressor Control Relay Gear Motor Protect Relay CCR GMPR Float Switch FS and Bin Control 2 mechanical backup When 5VDC is present across any of these switches the switch is open 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 min 3 Remove the front panel Move the power switch to the OFF position then unplug the appliance from the electrical outlet 4 Remove the control box cover and access CB 5 Check the CB S1 dip switch settings see III B 1 Default Dip Switch Settings to assure that they are in the correct positions For proper operation of BC1 infrared sensor confirm that S1 dip switch 7 is in the ON position 6 Startup CB POWER OK LED is on Plug the icemaker back into the electrical outlet then move the power switch to the ON position Move the control switch to the ICE position CB POWER OK LED and BC1 green LED turn on Diagnosis CB POWER OK LED If CB POWER OK LED is off check for proper supply voltage 115VAC input to CT If 115VAC is not present check the
53. n cycle timer starts Icemaking cycle starts c Manual Drain Manual drain is used when servicing 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 sec delay then PDS de energizes and the 5 min ice purge timer starts When the 5 min ice purge timer terminates GM de energizes DV energizes to drain the evaporator and reservoir To avoid the 5 min shutdown delay turn off the power supply then move the control switch to the DRAIN position Turn on the power supply DV energizes to drain the evaporator and reservoir DV de energizes when the control switch is moved to the ICE position 12 Shutdown BC1 infrared sensor When ice activates BC1 yellow LED starts flashing when ice is at the outer limit of its range and turns steady as ice nears After BC1 yellow LED turns on flashing or steady BC1 shutdown delay timer S1 dip switch 1 2 3 starts For a typical dispenser unit application a 100 sec shutdown delay is recommended When used with a standard Hoshizaki storage bin any shutdown delay setting is acceptable See III B 2 1 Infrared Sensor Shutdown Delay S1 dip switch 1 2 3 Once BC1 shutdown delay timer terminates PDS de energizes and the 5 min 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 FMR Whe
54. n the 5 min ice purge timer terminates GM EH CCR GMPR de energize Icemaker Diagnosis BC1 yellow LED not flashing or on with ice near See II D 1 Bin Control 1 infrared sensor Check PDS remains energized after BC1 shutdown delay timer terminates Check for 115VAC from CB X1 relay DBU wire to neutral W If 115VAC is present replace CB If 115VAC is not present check PDS for mechanical failure 20 Condensing Unit Diagnosis When PDS de energizes and closes pump down starts Confirm refrigerant low pressure drops to 9 PSIG and CLPS opens If refrigerant low pressure reaches 9 PSIG and CLPS does not open replace CLPS If Comp and FMR remain energized after CLPS opens replace MC Note If BC1 fails to shut down the icemaker BC2 opens CB shuts down the icemaker and sounds a 9 beep alarm BC2 mechanical BC2 opens actuator paddle engaged CB shuts down the icemaker and sounds a 9 beep alarm Diagnosis See II D 2 Bin Control 2 mechanical backup Check Legend BC1 bin control 1 infrared sensor BC2 bin control 2 mechanical backup CB control board CCH crankcase heater CCR GMPR compressor control relay gear motor protect relay CLPS control low pressure switch Comp compressor DV drain valve EH evaporator heater FMR fan motor remote FT 90 sec low water safety timer FZT 30 min freeze safety timer GM gear motor HM headmaster C P R HPS high pressure switch LFS lower float switch MC magnetic c
55. nergize 30 sec after UFS closes confirm UFS status See II E Float Switch Check and Cleaning If UFS is closed and GM LED does not turn replace CB If GM LED is on and GM and EH are off check for 115VAC from CB K1 3 to a neutral W If not check 115VAC power supply connections from power switch If 115VAC is present check for 115VAC from CB K1 2 to a neutral W If 115VAC is present on CB K1 3 and not on CB K1 2 replace CB 24 7 Freeze Cycle GM and COMP LED are on The 5 min ice purge timer terminates or the ice purge cycle bypass button SERVICE is pressed COMP LED turns on To bypass the 5 min 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 115VAC is present between CB X1 relay power supply brown BR and neutral W at all times If not check 115VAC power supply wire connections from power switch If COMP LED is not on after 5 min ice purge timer terminates replace CB When COMP LED turns on PDS energizes If COMP LED is on and PDS does not energize check for 115VAC between CB X1 relay dark blue DBU wire and a neutral W If 115VAC is not present confirm X1 relay brown BR to a neutral W If 115VAC is present on X1 relay brown BR and not on X1 relay dark blue DBU replace CB 8 Refill WTRIN LED is on See 5 Fill WTRIN LED is on above Legend BC1 bin control infrared sens
56. ol 1 infrared sensor See IID t Bin Contro 1 7777 77 Bin Contro 2 mechanical backup See II D 2 Bin Control 2 7 v7 A 3 Control Board 35 III Controls and Adjustments A Control Board A Hoshizaki exclusive control board is employed in Hoshizaki Modular Flakers All models are pre tested and factory adjusted e For a control board check procedure see II 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 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 36 1 Control Board Layout GM LED X2 Relay GM K1 Connector 115VAC 115VAC Input 3 brown GM EH CCR GMPR 2 white black e FLUSH LED X3 Relay drain DV WTRIN LED X4 Relay WV K2 Connector 24VAC Drain Valve 10 yellow Control Transformer 24VAC Input 9 white red Inlet Water Valve 8 white brown Control Transformer 24VAC Input 7 white red Water Dispensing Valve Agitation Motor and Ice Di
57. ontactor PDS pump down solenoid valve SLPS safety low pressure switch UFS upper float switch WV inlet water valve 21 C Control Board Check Before replacing a control board that does not shovv a visible defect and that you suspect is bad always conduct the following check procedure This procedure will help you verify your diagnosis 1 Check CB S1 dip switch settings to assure that they are in the factory default position For factory default settings see III B 1 Default Dip Switch Settings Note S1 dip switch 7 determines bin control application BC1 infrared sensor with BC2 mechanical backup S1 dip switch 7 in the ON position BC mechanical stand alone Standard Ice Storage Bin S1 dip switch 7 in the OFF position 2 Move the power switch to the ON position and move the control switch to the ICE position The CB POWER OK LED turns on Diagnosis POWER OK LED Check that the CB POWER OK LED is on If not check for proper supply voltage 115VAC input to the control transformer power switch breaker and fuse Next check for proper low voltage 24VAC output from the control transformer and the 1A fuse is good Check for 24VAC at CB K8 1 VV R to CB K8 2 LBU If 24VAC is present and CB POWER OK LED is off replace CB 3 BC1 infrared sensor Power Supply K6 connector CB supplies 20VDC to BC1 and BC1 green LED is on Diagnosis Check that BC1 green LED is on If not check for 20VDC between C
58. or BC2 bin control mechanical backup CB control board CCR GMPR compressor control relay gear motor protect relay EH evaporator heater FS float switch GM gear motor LFS lovver float switch PDS pump down solenoid valve UFS upper float switch WV inlet water valve 25 e GM LED X2 Relay GM PDS e COMP LED X1 Relay F A Control Board K9 Connector 5VDC High Pressure Switch not used on this model Control Switch 1 amp 2 white black 3 amp 4 yellow Compressor Control Relay Gear Motor Protect Relay Circuit 5 amp 6 white orange K1 Connector 115VAC 115VAC Input 3 brown GM EH CCR GMPR 2 white black FLUSH LED X3 Relay drain DV WTRIN LED X4 Relay WV K2 Connector 3 NivHQ 24VAC Drain Valve 10 yellow Control Transformer 24VAC Input 119 white red Inlet Water Valve 8 white brown Control Transformer 24VAC Input 7 white red Water Dispensing Valve Agitation Motor and Ice NISTAL TO TT M AWIL 1201 DUDU COT IHIIHIIIMIN DUTOT S2 SERVI
59. or in position Secure the evaporator to the lower housing using the socket head cap screws and split lock washers 13 Install the auger assembly with the upper part of the mechanical seal attached 14 Replace the removed parts in the reverse order of which they were removed Note Be sure to use new seal bolts See Seal Bolt Removal and Installation Instructions earlier in this section 15 Replace the top and side panels in their correct positions 16 Move the control switch to the ICE position 17 Plug the unit into the electrical outlet then move the power switch to the ON position to start the automatic icemaking process 18 Replace the front panel in its correct position 7 Removal and Replacement of Gear Motor 1 Drain the water from the evaporator a Remove the front panel then move the power switch to the OFF position b Move the control switch to the DRAIN position c Move the power switch to the ON position and allow the water to drain from the evaporator d Move the power switch to the OFF position then turn off the power supply 2 Remove the top and side panels 3 Remove the strap connecting the spout to the chute assembly then remove the spout 4 Remove the hex head bolts and washers securing the lower housing to the gear motor Lift the evaporator up slightly 5 Remove the socket head cap screws with split lock washers securing the gear motor 53 6 Disconnect the gear motor wiring
60. ove the thumbscrew securing the BC1 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 BC1 green LED is on The BC1 green LED confirms 20VDC from CB to BC1 and remains on constantly Diagnosis If the BC1 green LED is not on confirm 20VDC at CB K6 pin 1 DBU to CB K6 pin 3 BR If 20VDC is present and the BC1 green LED is off replace BC1 If not see step 3 BC1 infrared sensor Power Supply under II C Control Board Check 7 Make sure CB GM LED is on There is a delay of at least 30 sec before CB GM LED turns on after power up After CB GM LED turns on press CB SERVICE button to bypass the 5 min ice purge cycle WARNING Risk of electric shock Care should be taken not to touch live terminals BC1 infrared sensor Connector 20VDC from K6 connector on LEDs LEDs control board 9 CES Thumbscrew a _ Lens Housing Housing i i ens Fig 3 27 8 GM and COMP LEDs are on Use an object to cover the lens BC1 yellow LED turns on flashing or steady BC1 yellovv LED flashes vvhen ice is at the outer limit of its range and turns steady as ice nears After BC1 yellovv LED turns on flashing or steady BC1 shutdown delay timer starts See III B 2 BC1 Infrared Sensor Shutdown
61. power switch and breaker Next check for proper 24VAC output voltage from CT Check CB K8 1 W R to 2 LBU for 24VAC If 24VAC is not present and 1A 24VAC fuse is good replace CT If 24VAC is present and CB POWER OK LED is off replace CB Diagnosis BC1 infrared sensor Check that BC1 green LED is on If CB POWER OK LED is on and BC1 green LED is off check CB K6 3 BR to CB K6 1 DBU 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 BC1 yellow LED is on or flashing move ice away from lens If no ice is present clean the lens with a warm clean damp cloth If BC1 yellow LED is still on or flashing after cleaning the lens replace BC1 Diagnosis BC2 mechanical backup Check that the actuator paddle is properly positioned Check continuity across BC2 If open replace BC2 Next check VDC at CB K8 3 GY to CB K8 4 GY When BC2 is closed OVDC is read Move the actuator paddle to open BC2 When open 5VDC is present between CB K8 3 GY and CB K8 4 GY If 5VDC is not present when BC2 is open replace CB Return actuator to its normal position 7 Fill Cycle WTRIN LED is on Reservoir is empty and LFS and UFS are open FT starts WV energizes and fill cycle starts LFS closes Nothing happens at this time Reservoir continues to fill until UFS closes When UFS closes FT terminates WV de energizes and C
62. red K4 connector to CB K8 6 R upper and CB K8 7 DBU lower when FS is open If 5VDC is present between CB K8 5 BK and CB K8 6 R upper or CB K8 7 BU lower FS is open For further FS diagnostics see II E Float Switch Check and Cleaning 5 Fill WTRIN LED is on 24VAC is present at CB K2 9 W R at all times If not confirm 24VAC from CB K2 9 W R to a neutral LBU When LFS open at startup or opens during normal operation WTRIN LED turns on fill timer FT starts freeze timer FZT terminates only during normal operation and WV energizes If LFS is open and WTRIN LED is off confirm LFS status See II E Float Switch Check and Cleaning If LFS is open and WTRIN LED is off replace CB If WTRIN LED is on and WV is not energized check for 24VAC at CB K2 8 W BR to a neutral LBU If 24VAC is not present on CB K2 8 VV BR replace CB WTRIN LED turns off once UFS closes If not confirm UFS status See II E Float Switch Check and Cleaning If UFS is closed and WTRIN LED is on replace CB If WTRIN LED is off and WV is open check for 24VAC at CB K2 8 W BR If 24VAC is present at CB K2 8 W BR replace CB If 24VAC is not present check WV diaphram 6 Ice Purge Cycle GM LED is on When UFS closes GM delay timer starts 5 or 30 sec depending on CB S1 dip switch 7 Once GM delay timer terminates GM LED turns on GM and EH energize and 5 min ice purge timer starts If GM does not e
63. rmance Do not adjust 41 C Povver Svvitch and Control Svvitch The power switch and control switch are used to control the operation of this appliance They are located on the control box 1 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 2 Control Switch The control switch has 2 positions ICE and DRAIN When the control switch is in the ICE position open icemaking begins When the control switch is in the DRAIN position closed the drain valve energizes 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 the drain valve energizes 42 IV Refrigeration Circuit and Component Service information AA WARNING This appliance should be diagnosed and repaired only by qualified service personnel to reduce the risk of death electric shock serious injury or fire Before Servicing FS Move the icemaker s power switch to the OFF position Unplug the icemaker from the electrical outlet SRC Turn off the
64. s at this time When LFS opens WV energizes and refill cycle begins FZT terminates and FT starts FZT 30 Min Freeze Safety Timer FZT starts when UFS closes and terminates when LFS opens If LFS does not open within 30 min of UFS closing CB shuts down the icemaker and sounds a 5 beep alarm See III A 2 LED Lights and Audible Alarm Safeties To reset turn the power supply off and on again See II F Diagnostic Tables for troubleshooting details Icemaker Diagnosis CCR GMPR 5 min ice purge timer terminates CB COMP LED is on and PDS energizes If not check for 5VDC between CB K5 connector pin closest to CB K4 connector and CB K9 connector 5 W O If 5VDC is not present replace CB If 5VDC is present check for 5VDC between CB K5 connector pin closest to CB K4 connector and CB K9 connector 6 W O If 5VDC is present and CB Comp LED is off PDS not energized replace CB If 5VDC is not present check for 115VAC between CCR GMPR terminal 7 R to CCR GMPR terminal 8 W for 115VAC If 115VAC is not present GM not energized see step 8 above If 115VAC is present and CCR GMPR contacts are open 5VDC present between terminals 3 W O and 5 W O check CCR GMPR solenoid voltage and solenoid continuity Replace CCR GMPR if necessary Icemaker Diagnosis PDS If COMP LED is on and PDS is not energized check CB X1 relay BR wire to a neutral W and CB X1 relay DBU wire to a neutral W for 115VAC If 115VAC is present on
65. scratched the mechanical seal may cause water leaks and should be replaced 6 Remove the socket head cap screws and split lock washers securing the evaporator to the lower housing 3 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 7 Raise the evaporator up to access the lower housing 52 8 Remove the O ring and mechanical seal from the housing f 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 NOTICE To help prevent water leaks be careful not to damage the surfaces of the O ring or mechanical seal 6b Lower Housing 9 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 IV 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 requires a bearing press adaptor If one is not available replace the whole extruding head and lower housing 10 Mount the lower housing on the gear motor 11 Install the O ring and lower part of the mechanical seal on the lower housing 12 Make sure the lower mechanical seal is in place then place the evaporat
66. spensing LEDs not used on this model F A Control Board K9 Connector 5VDC High Pressure Switch Control Switch not used on this model X1 Relay Compressor Control Relay Gear PDS Motor Protect Relay Circuit 5 amp 6 white orange S2 SERVICE Button Ice Purge Cycle Bypass K8 Connector 24VAC and 5VDC TO Control Transformer 24VAC Input 1 white red Control Transfomer 24VAC Neutral 2 light blue Bin Control 2 mechanical backup 3 amp 4 gray 5VDC Float Switch Common 5 black 5VDC 255 Upper Float Switch NETT 2 6 red 21 2 E Z Lower Float Switch e 7 blue D T K7 Connector Open CTT B H to B E o l E E e Se mm m EE POWER OK LED 25 o 1 Dip Switch HITE J2 Connector Open K6 Connector 20VDC Bin Control 1 infrared sensor dark blue white signal common brown ground K3 Connector Open K4 Connector Open K5 Connector Open F A Control Board 37 2 LED Lights and Audible Alarm Safeties At startup CB green POVVER OK LED turns on immediately to indica
67. t to the chute assembly then remove the spout 5 Disconnect the water hoses 6 Remove the extruding head seal bolts Using the cutter lift out the auger assembly 7 Remove the insulation and the expansion valve bulb on the suction line 8 Disconnect the inlet and outlet tubing 9 Remove the socket head cap screws and split lock washers securing the evaporator to the lower housing 10 Lift off the evaporator 11 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 51 12 Make sure the lovver 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 vvashers 13 Remove the drier then place the nevv drier in position 14 Braze all fittings vvhile purging vvith nitrogen gas flovving at a pressure of 3 to 4 PSIG 15 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
68. te proper control voltage and will remain on unless a control voltage problem occurs For further details see II B Service Diagnosis Sequence Step wi GM Fill Cycle WTRIN wv 520 ce Purge Cycle IGM 5 min Freeze Cycle with refill GM COMP GM EH PDS Comp On until UFS closes Alarm WTRIN refill FMR VVV refill sounds after 90 sec 1 in 1 Drain Cycle FLUSH Drain 2se S1 dip svvitch 4 off GM COMP Comp GM EH PDS 2 sec only if BC1 not FMR only if BC1 not satisfied satisfied 1 in 12 Drain Cycle FLUSH Drain 10 min S1 dip switch 4 on The built in safeties shut down the unit and have alarms as listed below rss UFS open 90 sec after WV energized and UFS closes Control Switch Automatic reset once the control switch is In DRAIN position longer than 15 min moved to the ICE position N A 5 Freeze Timer FZT Manual reset Turn power off and on again WV off gt 30 min since last WV activation Low Voltage CB green POWER 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 HE a mm CCR GMPR contacts fail to close EN BC2 mechanical backup actuator paddle engaged Legend BC1 bin control 1 infrared sensor BC2 bin control 2 mechanical backup CB control board CCR GMPR compressor control relay gear motor protect rel
69. trol box cover in its correct position 14 Plug the appliance 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 FS Scale on FS can cause inconsistent operation of UFS and LFS In this case both UFS and LFS should be cleaned and checked 1 Remove the front panel then move the power switch to the OFF position 2 Unplug the appliance from the electrical outlet 3 Remove FS assembly from the reservoir cover See Fig 6 4 Wipe down FS 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 UFS and the white float is on bottom LFS The floats must be installed with the magnets inside them towards the top of the switch See Fig 5 Installing the floats upside down will affect the timing of FS operation 6 Rinse the float switch assembly thoroughly with clean water and replace in its correct position 7 Plug the appliance 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 position Legend CB control boar
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71. ust be installed in accordance with applicable national state and local codes and regulations To reduce the risk of electric shock do not touch the icemaker power switch or plug with damp hands Make sure the icemaker power switch is in the OFF position before plugging in or unplugging the icemaker Before Servicing FS Move the icemaker s power switch to the OFF position Unplug the icemaker from the electrical outlet SRC Turn off the power supply to the remote condensing unit Place the disconnect if applicable in the off position Lockout Tagout to prevent the power supply from being turned back on inadvertently Do not make any alterations to the icemaker or condensing unit Alterations could result in electric shock injury fire or damage to the appliance A WARNING continued FS The 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 THE ICEMAKER MUST BE GROUNDED The icemaker is equipped with a NEMA 5 15 three prong grounding plug 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 qualified electr
72. w the pans Repeat with a cup of clean water to rinse Check to make sure they are clear Inspect for leakage around seal bolts Tighten see torque values below or replace as necessary Seal bolts must be replaced once removed because seal material is one time use only If new seal bolts do not have preapplied threadlocker apply Loctite 243 or equivalent threadlocker to seal bolt threads Torque for F 1001 and Smaller 11 1 ft Ip 15 N m Torque for F 1500 and Larger 25 8 ft lb 35 N m Tighten 2 times Allow at least 5 sec in between each tightening Water Hoses Inspect the water hoses and clean replace if necessary Condenser Inspect Clean if necessary by using a brush or vacuum cleaner Icemaker Inspect for oil spots loose components fasteners and wires Check for wear using 02 round stock or pin gauge Replace both upper 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 Upper Bearing extruding head Upper Bearing extruding head then Yearly Lower Bearing and O Ring lower housing Mechanical Seal Evaporator Oylinder Auger bearing and lower bearing if wear exceeds factory recommendations Inspect Replace both upper bearing and lower bearing if wear exceeds factory recommendations Replace the mechanical seal if the seal s contact surfaces are worn cracked or scratche

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