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Hoshizaki FS-1022MLH-C User's Manual

1. L N 2s PUM m SOLE VALVE Ti 4 DB e W m e W BR I W 8 BU L gol INLET LBI W BK BU BR W R W 2 bd aR BR BR WA Y BR 3 3 J 8910 23 KI a NTROL B Ba 8 6 2 EEE LBU W O W SI DIP SWITCH SETTING 2 3 4 5 6 1 FS 1022MLH C ON OFF OFF OFF OFF OFF ON Se OFF 7 BLACH HITE B B ELL B ARK BLUE l HITE BLACI EE 3 HITE BLACH A B HITE BLUE L8 LICHT BLUE HITE ANGE ANGE HITE RE 23 2 SRC 10H 208 231 IRE WITH NEUTRAL FOR 115 LI L ON B 3 W L T3 m jai L s LI TI BI H Mu 7 CRANKCASE OMe VO HEATER BR W e IC GY BK W c2 c W BJ 4 BK m e CONTROL LOW PRESS SAFETY LOW PRESS HIGH PRESS SWITCH SWITCH SWITCH BK 0 BR P au T A RA W WHITE Control Low Pressure Switch Cut in 2905PSIG Differential 20 52PSIG Safety Low Pressure Switch Manual Reset Differential 3 2 5 PSIG 6 PSIG H
2. Motor and Ice AN ol 36017 aoe goo YA Dispensing LEDs FA BLAZI EF HTE e K6 Connector 20VDC not used on this nfrared Sensor Bin Control model Dark Blue White signal common J2 Connector Open lt K3 Connector Open e K4 Connector Open Connector Open Brovvn ground F A Control Board 17 2 LED Lights and Audible Alarm Safeties The POVVER OK LED indicates proper control voltage and vvill remain on unless a control voltage problem occurs For further details see II B Sequence of Operation Energized Fill Cycle WTRIN ce Purge Cycle GM EH Freeze Cycle with refill GM COMP GM EH PDS Comp On until UF S closes WTRIN refill FMR 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 FMR only if IS not satisfied satisfied 1 in 12 Drain Cycle FLUSH Drain 77 10 min 10 min S1 dip svvitch 4 on The built in alarm safeties shut s the unit UF S open gt 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 III B 2 SRC 10H for high pressure switch operation WV off 30 minutes since last WV activation Low Voltage POWER OK LED turns off if
3. 20 f Mechanical Bin Control Shutdown Delay S1 dip switch 8 21 g Factory Use S1 Dip Switch 9 amp 10 AA Ra RA d kk 21 ll TE GINEN NO ATA ANNO sy a uy y uuu u u nu ai 22 A Water Circuit and Refrigeration 22 MWA R L OFANS u un us al b y 23 li Ib uuu uu 23 ZORG TL c l 24 olman APA i 0 DL aa aa 25 Iv Service AITO SNS u n akana ure ales laudet ta cust te a kita l D 26 Alea Production Ghe K_ a YR aka a a ra a a A n kk ak e S 26 B Diagn stie PEOCES W AE ie ik aa ik a kk ab dA n a IL kl k ka ja D ki bk 26 C Control Board Gh ecK U uuu titit fa a kk kat aa sky a ik bi a si 30 D Bin Gontrel Geek ky katkat kk a aa tt e e in kak a a daaa ay ya ke a 33 1 HLTAT Q Sensor CHECK eka oo aki iya epike kepi anons kak lokasyon 33 2 Mechanical Backup Bin Control Check 34 E Float Switch Check and Cleaning esse eee eee eee eee eee 36 Floal SWEN GHegkuu u p e aaa y 36 2 uoc mc e se eal D 36 F Ulannosit Ch afib ab Ra qia h att n aba a 38 V Removal and Replacement of 65 eee eee 41 A Service for Refrigerant Lines PYD aa aaa a 41 1 Retrigerant RECOV GUY uuu uu uuu uuu ank ako ott ak e kaa ba lanan anas n 42 a a kt EREN 42 3 Evacuation and Recharge R 404
4. Remove the socket head cap screws and split lock washers securing the evaporator to the lovver 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 47 17 Remove the drier then place the nevv drier in position 18 Braze all fittings vvhile purging vvith nitrogen gas flovving 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 mixture with pressurized air for leak testing 20 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 vvhich meets ARI Standard 700 latest
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6. 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 ice 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 54 4 Pour the sanitizing solution over the extruding head until the evaporator assembly and the reservoir are full and the solution starts to overflovv into the drain pan 5 Replace the spout and str
7. IV E Float Switch Check and Cleaning 5 Fill VVTRIN LED is on The VVTRIN LED only turns on vvhen the reservoir vvater level is low enough to open the LF S The VVTRIN LED turns off once the UF S closes 24VAC is present at CB K2 connector pin 8 to any light blue LBU wire when LF S is open Diagnosis If the LF S is open and the WTRIN LED is off confirm LF S status open or closed f LF S is open and VVTRIN LED is off CB is bad and should be replaced If VVTRIN LED is on and 24VAC is not present from CB connector K2 connector pin 8 to any light blue LBU wire confirm 24VAC from K2 connector pin 9 to any light blue LBU wire If 24VAC is present on K2 connector pin 9 and not on K2 connector pin 8 CB is bad and must be replaced 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 the K1 connector pin 2 white black BK wire to a white W neutral wire If 115VAC is not present check for 115VAC from CB K1 connector pin 3 brown BR wire to a white W neutral wire If 115VAC is present on pin 3 and not on pin 2 CB is bad and should be replaced 7 Freeze Cycle GM and COMP LED are 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 at CB X1 relay dark blue
8. DBU wire and PDS energizes Diagnosis Check for 115VAC from CB X1 relay dark blue DBU wire to a white neutral wire If 115VAC is not present check X1 relay brown BR wire to a white neutral wire If 115VAC is present on X1 relay brown BR wire and not on X1 relay dark blue DBU wire CB is bad and must be replaced 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 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 vvith 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 svvitch 1 2 3 are in the proper position for your application See II C 3 b Infrared Sensor Shutdown Delay S1 dip svvitch 1 2 3 4 Confirm that IS is connected to the K6 connector on CB VVipe dovvn the IS lens vvith a clean warm damp cloth If the bottom of the icemaker is not accessible in your application remove the thumbscrevv securing the IS housing
9. Jeyewoo r yams dig LS anou AJOAB spuooes Z JO suedo Aq ejoAo ureup ur L l A z 13 spunos uueje deaq l p p x J 095 06 lo eBung 99 Z pue sjesai uue e I au ss sesoj S 4N ueuMw Ajajes 194eM MO1 SHE S W9 Joye uonnq JDIAYIS Bind 99 Z 3Ol Ul YOUMS O4JUOD eo Z NO YOUMS Jemoqd pue sjesel uuefe s solo S 4N ueuM spunos aid ssedAq ol dnyeis L 2 Sequence Flow Chart ueje d q 14 jJeuondo ersoy 3 ejoAo 412 1 ZI Ui L g ees eouanbas 999 06 lt Ild H urejp zL ur L 104 ejqejreAe SI l ureip ZI UI L e Papuewwooa SI r 1134 JAD uap 1 ul I inejep MOR eui u6nouliv 9joA2 uredg ZL UI L p HOL DUS IO HTINGGOL SI Heu 0 4J eouenbes peog 104002 V 3 15 C Control Board e A Hoshizaki exclusive control board is employed in Hoshizaki Modular Flakers e All models are pre tested and factory set CAUTION 1 The control board is fragile handle very carefully 2 The control board contains integrated circuits vvhich 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 3 Do not touch the electronic devices on the control board or the back of the control board 4 Do not change wiring and connections Do not misconnect terminals 5 Do not sh
10. PROTECTION ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS 115 60 1 120 V 120 V 15 A 15 A 15 A 15 A 3 FLA 0 03A 1 4 HP WATER TEMP F Ambient Temp F 830 380 805 365 90 70 830 380 805 365 80 90 100 Cubelet Approx 80 Ice 90 70 F Conductivity 200 ps cm N A 90 70 F 70 50 F 1745 5 96 1713 4 94 FS 1022MLH C amp SRC 10H 331 1 13 345 1 00 FS 1022MLH C ONLY 84 12 100 12 22 x16 5 x26 560x417x657mm Stainless Steel Net 126 Ib 57 kg Shipping 166 Ib 75 kg Cord Connection nlet 1 2 FPT Outlet 3 4 FPT Suction line 1 1 16 12 UNF Fitting 10 PARKER Liquid line 5 8 18 UNF Fitting 6 PARKER Auger type Direct Driven Auger 1 4 HP Gear Motor Float Svvitch N A Photoelctric Sensor Mechanical Bin Control Proximity Svvitch Air Cooled Remote Condensing unit SRC 10H Required Copper Tube on Cylinder Thermostatic Expansion Valve Headmaster C P R on SRC 10H 210 PSI R 404A 8 Ib 6 oz 3800 g cemaker 4 oz 113 g Condensing Unit 8 Ib 2 oz 3687 g High 427 PSIG Low 230 PSIG Fuse 1A Fuse 3A Float Svvitch and Timer Spare Fuse ce Storage Bin Condensing Unit SRC 10H VOLTAGE RANGE 104 127VAC AMBIENT TEMP 45 100 F VVATER 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
11. SRC 10H AC SUPPLY VOLTAGE COMPRESSOR FAN MOTOR OTHER MAXIMUM FUSE SIZE MAX HACR BREAKER USA ONLY MAX CIRC BREAKER CANADA ONLY MINIMUM CIRCUIT AMPACITY EXTERIOR DIMENSIONS VVxDxH DIMENSIONS WITH LEGS VVxDxH EXTERIOR FINISH WEIGHT Approximate CONNECTIONS ELECTRIC REFRIGERATION CIRCUIT COMPRESSOR CONDENSER FAN MOTOR PROTECTION REFRIGERATION PROTECTION REFRIGERANT CONTROL PUMPDOWN CONTROL REFRIGERANT CHARGE DESIGN PRESSURE COMPRESSOR PROTECTION ACCESSORIES SUPPLIED OPERATING CONDITIONS 208 230 60 1 3 Wire w Neutral for 115VAC 208 230V 9 6 RLA 46 LRA 120 V 3A MAX 120 V 0 5 A 20 A 20A 20 A 20 A 28 x23 x19 711x280x485mm 28 x23 x36 711x280x915mm Galvanized Steel Net 143 Ib 65 kg Shipping 169 Ib 77 kg Permanent Connection Suction Line 1 1 16 12 UNF Fitting 10 PARKER Liquid Line 5 8 18 UNF Fitting 6 PARKER Hermetic Model RS80 C2E CAV Air Cooled Fin and Tube Type Thermal Protector Auto Reset High Pressure Switch Manual Low Pressure Switch Headmaster C P R 210 PSI Auto Reset Low Pressure Switch R 404A 8 Ib 6 oz 3800 g Condensing Unit 8 Ib 2 oz 3687 g Icemaker 4 oz 113 g High 427 PSIG Low 230 PSIG Internal Protector Leg 2 pcs Hex Head Bolt w Washer 8X16 8 pcs Hex Nut 8 pcs VOLTAGE RANGE 187 253 VAC AMBIENT TEMP 4 122 F HEAT OF REJECTION 10500 BTU hr Note We reserve the right to make changes in specifications and design without prior n
12. b 2 Gear Motor a Blown fuse b Internal protector open c Gear motor winding open Mechanical failure 38 3 Gear Motor Protect Relay 2 Control Board 5775510200 7 mE 3 Pump Down Solenoid Valve AMNEM EN Magnetic Contactor 1777700000 5 Contro Low Pressure Switch Pe oe O 6 Safety Low Pressure Switch 7 High Pressure Switch Bad contacts 8 Condensing Unit Fan Motor 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 irty Damaged or defective TT Expansion Valve TXV Sanaill OOOO O RR 13 Drain Vale Defective coil Defective control board 14 Water System Water leaks 1 Float Switch Dirty sticking Defective 2 Inlet Water Valve Clogged or defective 3 Water Supply Off 39 4 Contro Board 2777 sm 0777 Shutdown T Infrared Sensor Bin Contr 2 Mechanical Backup Bin Contr 6 Control Board 40 V Removal and Replacement of Components A WARNING 1 This unit should be diagnosed and repaired only by qualified service personnel to reduce the risk of death electric shock serious injury or fire 2 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
13. edition be used 21 Replace the removed paris in the reverse order of which they were removed 22 23 24 Plug the unit into the electrical outlet then move the povver svvitch to the ON position to start the automatic icemaking process Replace the top and side panels in their correct positions Move the control svvitch to the ICE position 25 Replace the front panel in its correct position 6 Removal and Replacement of Mechanical Seal and Lovver Housing 6a Mechanical Seal 1 Remove the front panel then move the povver svvitch to the OFF position 2 Move the control switch to the DRAIN position 3 Move the power switch to the ON position 4 Allovv the vvater 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 8 9 The mechanical seal consists of tvvo parts One moves along vvith the auger and the other is fixed on the lower housing If the contact surfaces of these two parts are vvorn cracked or scratched the mechanical seal may cause vvater leaks and should be replaced Remove the strap connecting the spout to the chute assembiy then remove the spout Remove the extruding head seal bolts Using the cutter lift out the auger assembly 10 Remove the socket head cap screvvs and split lock vvashers securing the evaporator to the lower housing 11 Raise
14. injury CAUTION Indicates a situation which could result in damage to the unit IMPORTANT Indicates important information about the use and care of the unit A 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 To reduce the risk of death electric shock serious injury or fire follow basic precautions including the following This unit should be disassembled or repaired only by qualified service personnel to reduce the risk of electric shock injury or fire 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 before any servicing is undertaken Place the disconnect if applicable in the off position Lockout Tagout to prevent the power supply from being turned back on inadvertently Make sure the icemaker power switch is in the OFF position before plugging in or unplugging the icemaker to reduce the risk of electric shock Do not make any alterations to the icemaker or condensing unit Alterations could result in electric shock injury fire or damage to the units For FS The icemaker requires an independent power supply of proper capacity See the nameplate for electrical specifications Fa
15. second DT starts DV energizes for 2 seconds 2 second DT terminates 1 hour DT resets All components and icemaking continue This setting is recommended for optimum icemaker performance The 1 in 1 drain eycle allovvs any sediment to drain from the evaporator vvithout interrupting the icemaking process 2 1 in 12 Drain Cycle optional DV energizes for ten minutes once every 12 hours when the 1 in 12 drain cycle is activated S1 dip switch 4 in the ON position optional 12 hour drain cycle timer terminates CR X1 on CB and PDS de energize GMR X2 on CB GM GMPR and EH continue Unit is in pump down mode Once the low side pressure drops to 9 PSIG CLPS opens de energizing MC Comp and FMR 5 minute ice purge timer begins When the 5 minute ice purge timer terminates GMR X2 on CB GM GMPR and EH de energize 10 minute DT begins DV energizes After 10 minute DT terminates 12 hour drain cycle timer starts 3 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 second delay then CR X1 on CB and PDS de energize Unit is in pump down mode Once the low side pressure drops to 9 PSIG CLPS opens de energizing MC Comp and FMR 5 minute ice purge timer begins When the 5 minute ice purge timer terminates GMR X2 on CB GM and GMPR de energize DV energizes to drain the evapor
16. terminals 3 and 5 white orange W O wires If 5VDC is present GMPR contacts are open Check GMPR solenoid voltage and solenoid continuity Replace GMPR if necessary If COMP LED remains off CB is bad and must be replaced If COMP LED is on and PDS is not energized confirm 115VAC at CB X1 relay brown BR to white W neutral and CB X1 relay dark blue DBU to white W neutral If 115VAC is present on CB X1 brown BR and not on CB X1 dark blue DBU CB is bad and must be replaced Next check for 115VAC from PDS dark blue DBU to white W neutral If 115VAC is present and PDS is closed check for continuity through PDS solenoid 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 not check CLPS SLPS manual reset and HPS automatic reset CLPS When PDS is energized CLPS closes when refrigeration circuit low side pressure rises to 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 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 HPS HPS
17. the evaporator up to access the lower housing 48 12 Remove the O ring and mechanical seal from the housing f only replacing the mechanical seal proceed to step 15 A WARNING To help prevent vvater leaks be careful not to damage the surfaces of the O ring or mechanical seal 6b Lovver Housing 13 Remove the hex bolts w washers securing the lower housing to the gear motor and remove the lovver housing from the gear motor f inspection of the upper bearing inside the extruding head see V B 1 Upper Bearing VVear Check indicates that it is out of tolerance replace both it and the bearing inside the lovver housing Note Replacing the bearing requires a bearing press adaptor f one is not available replace the vvhole extruding head and lovver housing 14 Mount the lovver 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 lovver mechanical seal is in place then place the evaporator in position Secure the evaporator to the lovver housing using the socket head cap screvvs and split lock vvashers 17 Install the auger assembly with the upper part of the mechanical seal attached 18 Replace the removed parts in the reverse order of which they were removed 20 Move the control svvitch to the ICE position 21 Plug the unit into the electrical outlet then move the povver svvitch to the ON position to start the automatic icemaking pro
18. the power from being turned back on inadvertently CHOKING HAZARD Ensure all components fasteners and thumbscrews are securely in place after the equipment 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 5 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 1 Repairs requiring the refrigeration circuit to be opened must be performed by properly trained and EPA certified service personnel 2 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 pressurized air for leak testing CAUTION 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 quickly Therefore it is important to prevent moisture from entering the system when replacing or servicing parts Always install a new drier every
19. then remove the housing from the base See Fig 3 5 Make sure the control svvitch 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 green LED confirms 20VDC povver from CB to IS and remains on constantly Diagnosis If the green LED is not on confirm 20VDC at K6 connector dark blue DBU to brown BR If 20VDC is present and the green LED is off IS is bad and must be replaced If not see step 3 IS Power Supply under IV C Control Board Check 7 Make sure the GM LED on CB is on There is a delay of at least 30 seconds before the GM LED turns on after povver up After the GM LED turns on press the SERVICE button on CB 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 yellow LED on IS turns on flashing or steady The yellow LED flashes when ice is at the outer limit of its range and turns steady as ice nears After the 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 FMR should de energize immediately after the shutdown delay timer terminates Five minutes later GM should de energize Diagnosis If the yellow LED is not on after cov
20. 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 vvith 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 1 R 404A itself is not flammable at atmospheric pressure and temperatures up to 176 F 80 C 2 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 3 Do not use silver alloy or copper alloy containing arsenic 4 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 1 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG CAUTION 1 Always install a new drier ever
21. upper float switch Black BK ja common Dark Blue DBU lower float switch Magnet towards top Upper Float blue Spring Retainer Clip Magnet tovvards top Lovver Float vvhite 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 supply Check CB using the steps in IV C Control Board Check Check that the S1 dip svvitch settings are in the factory default position For factory default settings see II C 3 a Default Dip Switch Settings 1 No Ice Production Startup n 1a Power Supply FS a Unplugged off blown fuse or tripped breaker Tb Power Supply SAC 2 Water Supply 3 Power Switch 4 Control Transformer Coil winding open or shorted 115V 24V 5 Fuse Control Box 6 Control Board See IV C Control Board Check 7 Control Switch 8 Infrared Sensor Bin Contr 9 Mechanical Backup Bin Contro Actuator paddle does not move freely 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 b Coil winding open 3 Float Switch Float does not move freely See IV E Float Switch Check b Defective and Cleaning Ice Purge Cycle 1 Control Board a No power to gear motor No power to gear motor protect relay circuit
22. voltage 92VAC 596 or less protection operates High Voltage The control voltage safeties automatically 147VAC 5 or more reset when voltage is corrected asi s GMPR contacts fail to close je m aaa MBC actuator paddle engaged Legend DV drain valve EH evaporator heater FMR fan motor remote GM gear motor IS infrared sensor bin control MBC mechanical backup bin control PDS pump down solenoid valve WV inlet water valve 18 3 Controls and Adiustments CAUTION 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 1 Dip SwitchNo 1 2 3 4 5 6 7 8 10 Normally off factory use Mechanical Backup Bin Control Shutdown Delay Bin Control Selector Continuous Dispensing Timer DCM models only do not adjust on modular icemakers Drain Frequency Control Infrared Sensor Shutdown Delay b Infrared Sensor Shutdown Delay S1 dip switch 1 2 3 Infrared sensor shutdown delay is the delay between the infrared sensor detecting ice yellow LED 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 di
23. A kask mama koko sote 42 B Important Notes for Component 1 41 43 1 Upper Bearing Wear Check 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 Evaporator 47 6 Removal and Replacement of Mechanical Seal and Lower Housing 48 7 Removal and Replacement of Gear Motor a 49 VI lean na and tr yigg meme PT 51 A Cleaning and Sanitizing Instructions eee eee 51 Ee nisse Dc G 51 2 Cleaning Procedure E X 51 Salallizing ONION eas T 53 4 Sanitizing Procedure Initial pau aaa Bozen Ata ia 53 5 Sanilizimg Procedure Finals u L Da n s balabanla 54 B NS MAIN CS baba Dada EE e EEE m kk ya na 55 C Preparing the Icemaker for Long Storage 57 important Safety Information Throughout this manual notices appear to bring your attention to situations which could result in death serious injury or damage to the unit A WARNING Indicates a hazardous situation which could result in death or serious
24. Hoshizaki America nc Modular Cubelet Serenity Series Model FS 1022MLH C Including Condensing Unit Model SRC 10H SERVICE MANUAL A Superior Degree of Reliability www hoshizaki com Number 73186 Issued 6 9 201 IMPORTANT Only qualified service technicians should install service and maintain the icemaker No service or maintenance should be undertaken until the technician has thoroughly read this Service Manual Failure to service and maintain the equipment in accordance vvith this manual may adversely affect safety performance component life and vvarranty coverage 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 vvhich have not been satisfactorily addressed please call write or send an e mail message to the Hoshizaki Technical Support Department for assistance HOSHIZAKI AMERICA INC 618 Highway 74 South Peachtree City GA 30269 Atin Hoshizaki Technical Support Department Phone 1 800 233 1940 Technical Support 770 487 2331 Fax 1 800 843 1056 770 487 3360 E mail techsupport hoshizaki com Web Site www hoshizaki com NOTE To expedite assistance all correspondence communication MUST include the following information Model Number e Serial Number e Complete and detailed explanation of the problem IMPORTANT This ma
25. ap in their correct positions 6 Allovv the icemaker to sit for about 10 minutes before operation 7 Replace the top panel in its correct position Move the control svvitch to the ICE position then plug the unit back in Move the povver svvitch 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 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 fr
26. ator and reservoir To avoid the 5 minute shutdown delay turn off the icemaker power supply then move the control switch to the DRAIN position DV de energizes when the control switch is moved to the ICE position e Shutdovvn Cycle 1 Infrared Sensor When power is supplied to the icemaker the green LED on IS turns on The green LED remains on constantly As ice fills the storage bin to the level of activating IS IS yellow LED turns on flashing or steady The yellow LED flashes vvhen ice is at the outer limit of its range and turns steady as ice nears After the yellow LED turns on flashing or steady IS shutdown delay timer S1 dip switch 1 2 3 begins For a typical dispenser unit application a 100 second shutdown delay s recommended VVhen used vvith a standard Hoshizaki storage bin any shutdovvn 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 CR X1 on CB and DDS de energize and the 5 minute ice purge timer begins Unit is in pump dovvn mode Once the lovv side pressure drops to 9 PSIG CLPS opens de energizing MC Comp and FMR When the 5 minute ice purge timer terminates GMR X2 on CB GM and GMPR de energize Note If IS fails to shut down the icemaker MBC opens CB shuts down the icemaker and a 9 beep alarm sounds 2 Mechanical Backup Bin Control CB shuts dovvn the entire unit vvithin 10 seconds when MBC opens actuat
27. automatically resets when refrigeration circuit 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 unit check for dirty or clogged condenser Once unit is restarted check for proper FMR operation and fan blade for binding Check for refrigeration circuit refrigerant restriction receiver service valves PDS and drier Also check for proper HM operation If 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 208 230VAC at MC T1 black BK to MC T2 red R If 208 230VAC is not present check incoming power supply and MC contact continuity If 208 230VAC is present and Comp does not start check Comp start relay start capacitor run capacitor and Comp motor windings If FMR does not energize check 115VAC at MC T3 dark blue DBU to white W neutral If 115VAC is present and FM does not energize check FM capacitor and motor windings 28 9 Refill Cycle Low Water Safety Cycle GM COMP and VVTRIN LEDs are on As ice is produced the vvater level in the reservoir drops UF S opens Nothing happens at this time When LF S opens WV energizes 90 second low water safety timer fill timer starts GMR X2 on CB GM GMPR EH PDS MC Comp and FMR co
28. cess 19 Replace the top and side panels in their correct positions 22 Replace the front panel in its correct position 7 Removal and Replacement of Gear Motor 1 Remove the front panel then move the povver svvitch to the OFF position 2 Move the control switch to the DRAIN position 4 Allovv the vvater to drain from the evaporator 5 Move the power switch to the OFF position then unplug the unit from the electrical outlet 3 Move the povver svvitch to the ON position 6 Remove the top and side panels 7 Remove the strap connecting the spout to the chute assembiy 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 49 11 Remove the gear motor bracket and spline coupling from the old gear motor and place on the nevv 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 15 Move the control svvitch 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 th
29. ck that IS green LED is on If green LED is not on check for 20VDC between CB connector K6 dark blue DBU and Connector K6 brown BR See Fig 1 If 20VDC is not present CB is bad and must be replaced nfrared Sensor 20VDC Closed Brown BR 20VDC DBU to BR 20VDC DBU to VV Red Positive OVDC W to BR White W Test Lead Infrared Sensor 20VDC Open yellovv LED flashing or steady D gt 20VDC DBU to BR Dark Blue DBU Black Negative Multimeter OVDC DBU to W 20VDC VV to BR Test Lead 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 white K5 connector pin closest to the red K4 connector See Fig 2 Then place the black negative 3LIH test lead from the multimeter to the corresponding pin to complete the 5VDC check Red positive test lead to white K5 connector pin closest to Black Negative l gt Control Switch red K4 connecotor Test Lead white black W BK Red Positive 205 Yellow Jumper Y Multimeter Sec T Lo ER4 Test Lead T T k Le Mo L Gear Motor Protect Relay Fia 2 d je terminals 3 an
30. ctor S1 dip switch 7 This unit 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 S1 dip svvitch 7 in the on position the gear motor delay after the upper float svvitch closes is 30 seconds VVhen the mechanical bin control is used S1 dip svvitch 7 in the off position the gear motor delay after the upper float svvitch closes is 5 seconds WARNING Do not place S1 dip switch 7 in the off position on dispenser unit applications S1 Dip Suvitch Setting Bin Control Application Gear Motor Delay OFF Mechanical Bin Control Standard Ice Storage Bins Only 5 seconds OF nfrared Sensor vvith Mechanical Bin Control Backup 20 f Mechanical Bin Control Shutdovvn Delay S1 dip switch 8 Factory set for normal operation No adiustment is required The shutdown delay is the time betvveen the mechanical bin control proximity svvitch opening and the control board shutting off the icemaker S1 Dip Suvitch Mechanical Setting Backup Bin Control Shutdovvn Delay 0 25 Seconds 6 7 Seconds g Factory Use S1 Dip Switch 9 amp 10 Factory set for optimum performance Do not adjust 21 III Technical information einssaeJg u iH A Water Circuit and Refrigeration Circuit 1 FS 1022MLH C with SRC 10H
31. d 5 9 z OF white orange W O Control Board K9 Connector a Control Svvitch K9 connector pins 1 and 2 white black W BK wires 5VDC is present from the vvhite K5 connector pin closest to red K4 connector to the K9 connector pin 1 vvhite black VV BK wire at all times If 5VDC is not present CB is bad and must be replaced When the control switch is in the ICE position the control svvitch contacts are open OVDC is present from the vvhite K5 connector pin closest to red K4 connector to the K9 connector pin 2 white black W BK wire When in the ICE position 5VDC is present from the K9 connector pin 1 vvhite black W BK wire to pin 2 white black W BK wire When the control switch is in the DRAIN position the control switch contacts are closed 5VDC is present from the white K5 connector pin closest to red K4 connector to the K9 connector pins 1 or 2 white black W BK wires If 5VDC is not present CB is bad and must be replaced OVDC is present from the K9 connector pin 1 white black W BK wire to pin 2 white black W BK wire b Gear Motor Protect Relay GMPR K9 connector pins 5 and 6 white orange WO wires When GMPR terminals 3 and 4 are open GMPR de energized 5VDC is present from the white K5 connector pin closest to red K4 connector to the K9 connector pin 5 white orange W O wire If 5VDC is not present CB is bad and must be replaced When GMPR terminals 3 and 4 are closed GMPR energiz
32. e 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 en Proximity Switch Actuator Paddle an Assembiy B od Fig 4 34 6 Make sure the GM LED is on There is a delay of at least 30 seconds before the GM LED turns on after povver up After the GM LED turns on press the SERVICE button located on CB to bypass the 5 minute ice purge cycle WARNING Risk of electric shock Care should be taken not to touch live terminals The COMP LED turns on 7 Press the actuator paddle located in the top of the chute 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 ac
33. e front panel in its correct position 50 VI Cleaning and Maintenance This icemaker must be cleaned and maintained in accordance vvith the instruction manual and labels provided vvith the icemaker Consult vvith your local distributor about cleaning and maintenance service To obtain the name and phone number of your local distributor visit www hoshizaki com or call Hoshizaki Technical Support at 1 800 233 1940 in the USA A WARNING 1 Only qualified service technicians should attempt to service this icemaker 2 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 3 The dispenser unit storage bin is for ice use only Do not store anything else in the dispenser unit storage bin A Cleaning and Sanitizing Instructions Hoshizaki recommends cleaning and sanitizing this icemaker at least twice a year More frequent cleaning and sanitizing however may be required in some existing water conditions A WARNING 1 To prevent injury to individuals and damage to the icemaker do not use ammonia type cleaners 2 Carefully follow any instructions provided with the bottles of cleaning and sanitizing solution 3 Always wear liquid proof gloves and goggles to prevent the cleaning and sanitizing solutions from coming into contact with skin or eyes 4 After cleaning and sanit
34. ean 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 Icemaker and Top Kits Bin Door and Snout if applicable Every 6 Icemaker 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 outlined 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 Icemaker 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 exce
35. ector pin 5 black BK common wire and K8 connector pin 6 red R UF S wire Next check continuity between CB K8 connector pin 5 black BK common wire and K8 connector pin 7 dark blue DBU LF S wire 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 black BK common wire and K8 connector pin 6 red R UF S wire Next check continuity between CB K8 connector pin 5 black BK common wire and K8 connector pin 7 dark blue DBU LF S wire 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 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
36. ed 5VDC is present from the white K5 connector pin closest to red K4 connector to the K9 connector pins 5 and 6 white orange W O wires Also check from the K9 connector pin 5 white orange W O wire to K9 connector pin 6 white orange W O wire If OVDC is present GMPR terminals 3 8 5 are closed If 5VDC is present GMPR terminals 3 amp 5 are open and CB may be in an 8 beep alarm See ILC 2 LED Lights and Audible Alarm Safeties 31 c Mechanical Backup Bin Control MBC K8 connector pins 3 and 4 gray GY vvires VVhen MBC is closed calling for ice 5VDC is present from the vvhite K5 connector pin closest to red K4 connector to the K8 connector pin 3 and 4 gray GY vvires Diagnosis If 5VDC is not present to either pin CB is bad and must be replaced If 5VDC is present to pin 3 gray GY wire and not to pin 4 gray GY wire MBC is open See IV D 2 Mechanical Backup Bin Control Check d Float Switch LF S and UF S K8 connector pin 5 black BK wire common 6 red R wire upper and 7 dark blue DBU wire lower 5VDC is always present from the white K5 connector pin closest to red K4 connector to the K8 connector pin 5 black BK wire common 5VDC is present to the K8 connector pin 6 red R wire upper and pin 7 dark blue DBU wire lower when the F S is open Diagnosis If 5VDC is not present at K8 connector pin 5 black BK wire CB is bad and must be replaced For further F S diagnostics see
37. eded VVhen povver is supplied the povver svvitch is in the ON position and the control svvitch is in the ICE position control board POVVER OK LED and infrared sensor green LED come on The POVVER OK LED remains on constantly If the infrared sensor yellow LED is on or flashing move ce avvay from the infrared sensor lens This system utilizes a pump dovvn solenoid valve in the icemaker and a control lovv pressure svvitch in the condensing unit to control the operation of the Comp and FMH This eliminates the need for an electrical connection betvveen the 2 units VVhen calling for ice the control board X1 on control board energizes the pump dovvn solenoid The lovv side refrigerant pressure rises to 29 PSIG the control low pressure switch located in the condensing unit closes energizing the Comp and FMR When the ice level satisfies the infrared sensor bin control bin full the unit goes into the shutdown cycle The control board de energizes the pump down solenoid valve X1 on CB The low side refrigerant pressure drops unit pumping down When the low side pressure drops to 9 PSIG the control low pressure switch opens de energizing Comp and FMR Control Low Pressure Switch Settings Cut Out 9 PSIG Differential 20 PSIG Cut In 29 PSIG 1 Sequence Cycles and Shutdown a Fill Cycle WTRIN LED is on WV energizes and fill cycle begins 90 second low water safety timer starts When UF S closes WV de energizes and 90 seco
38. eds factory recommendations See the Service Manual for details After Upper Bearing nspect Replace both upper bearing and lower bearing if wear 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 Long Storage CAUTION When storing the icemaker for an extended time or in sub freezing temperatures follovv the instructions belovv to prevent damage VVhen the icemaker is not used for tvvo or three days under normal conditions it is sufficient to only move the povver svvitch to the OFF position VVhen 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 supp
39. ering the lens IS is bad and must be replaced If the unit remains on after IS shutdown delay timer terminates and the 5 minute ice purge timer terminates CB is bad and must be replaced 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 e nfrared Sensor Housing Fig 3 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 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 storag
40. he 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 sequence check that allows you to diagnose the electrical system and components Before proceeding check for correct installation adequate water supply minimum of 10 PSIG maximum of 113 PSIG and proper voltage per unit nameplate Check that the 24VAC 1A fuse and the 115VAC 3A GM fuse are good When checking for high voltage 115VAC always choose a white W neutral wire to establish a good neutral connection When checking for low voltage Secondary 24VAC always choose a light blue LBU neutral 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 Pressure rises in the refrigeration system and closes CLPS MC is energized when CLPS closes energizing Comp and FMR 1 Remove the front panel then move the power switch to the OFF position 2 3 4 Unplug the icemaker from the electrical outlet Remove the control box cover and access CB 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
41. he 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 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 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 25 sodium hypochlorite solution chlorine bleach with 5 gal 19 1 of warm
42. igh Pressure Switch 384 6 PSIG 284 22 PSIG Cut out 9 PSIG 24 C Performance Data 1 FS 1022MLH C vvith SRC 10H APPROXIMATE Ambient ICE PRODUCTION Temp F 50 7 9 PER 24 HR 70 80 90 Ibs DAY I day 100 APPROXIMATE ELECTRIC 70 CONSUMPTION 80 90 watts 100 APPROXIMATE WATER 70 CONSUMPTION PER 24 HR 80 90 gal day I day 100 EVAPORATOR OUTLET TEMP 70 F C 80 90 100 HEAD PRESSURE 70 80 90 PSIG kg sq cmG 100 SUCTION PRESSURE 70 PSIG kg sq cmG 80 90 100 1130 BTU hr AT 90 FIWT 70 F Note We reserve the right to make changes in specifications and design without prior notice 25 IV Service Diagnosis A WARNING 1 This unit should be diagnosed and repaired only by qualified service personnel to reduce the risk of death electric shock serious injury or fire 2 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 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 t
43. ilure to use a properly sized breaker or fuse can result in a tripped breaker blown fuse or damage to existing wiring This could lead to heat generation or fire THIS UNIT MUST BE GROUNDED This unit is equipped with a 3 prong grounding plug to reduce the risk of potential shock hazards It must be plugged into a properly grounded independent wall outlet If the outlet is a 2 prong outlet it is your personal responsibility to have a qualified 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 To reduce the risk of electric shock make sure the power switch is in the OFF position before plugging in or unplugging the unit For FS Continued e To reduce the risk of electric shock do not touch the plug or power switch with damp hands e Do not use a unit 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 unit be sure to pull the plug not the cord and do not jerk the cord e Do not place fingers or any other objects into the ice discharge opening For SRC e Electrical connection must be hard wired and must meet national state and local electrical code requirements Failure to meet these code requirements could result in death electric shock serious inj
44. imity svvitch VVhen MBC proximity svvitch is closed OVDC is read across CB K8 connector pin 3 gray GY and 4 gray GY 5VDC is present between CB K8 connector pin 3 gray GY or 4 gray GY to CB white K5 connector pin closest to red K4 connector 5VDC gnd If 5VDC is not present CB is bad and must be replaced CB monitors the follovving svvitches vvith 5VDC Control Svvitch Gear Motor Protect Relay relay terminals 3 8 5 Float Switch and Mechanical Bin Control When 5VDC is present across any of these svvitches the svvitch is open 6 Fill Cycle WTRIN LED is on WV energizes The 90 second low water safety timer begins LF S closes Nothing occurs at this time The reservoir continues to fill until UF S closes The closing of the UF S de energizes WV terminates the 90 second low vvater safety timer and starts the 30 minute freeze timer Diagnosis Check that VVV energizes and water fills the reservoir If not check for water supply line shut off valve closed clogged water filters and clogged WV screen Next check 24VAC to WV from CB K2 connector pin 8 white brown W BR wire to a light blue LBU neutral wire Check for continuity through WV solenoid If open replace WV If WV is energized and refill exceeds 90 second low water safety timer fill timer with no water in the reservoir check for DV leaking If reservoir is full and overflowing check for open UF S Check that WV shuts off when UF S closes If not check UF S co
45. is in the ON position 5 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 POWER OK LED and IS green LED should be on Diagnosis POWER OK LED CB POWER OK LED is off Check for proper supply voltage 115VAC input to the control transformer If 115VAC is not present check the power switch and breaker Next check for proper 24VAC outpout voltage from the control transformer Check CB 26 e KB connector pin 1 vvhite red VV R to pin 2 light blue LBU If 24VAC is not present and 1A 24VAC fuse is good replace the control transformer If 24VAC is present and POWER OK LED is off CB is bad and must be replaced IS Diagnosis Check that IS green LED is on If POWER OK LED is on and IS green LED is off check 20VDC at CB K6 connector brown BR wire to dark blue DBU wire 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 CB is bad and must be replaced lf 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 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 prox
46. izing do not use ice made from the cleaning and sanitizing solutions Be careful not to leave any solution 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 51 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 9 Plate Packing Strap Rubber O Ring Nylon O Ring Float Switch Assembiy Reservoir Cover a Head Reservoir Reservoir Chute insuti A Hose Ties Hook and Loop Evaporator Assembly Chute Packing Fig 9 7 Pour the cleaning solution over the extruding head until the evaporator assembly and the reservoir are full and the soluti
47. lue LBU neutral 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 vvhen GM LED turns on CB X1 Comp relay energizes PDS Refrigeration circuit lovv side pressure rises to 29 PSIG closing the CLPS contacts MC is energized when CLPS closes energizing Comp and FMR 1 Check the S1 dip svvitch 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 nfrared Sensor Bin Control vvith Mechanical Backup Bin Control S1 dip svvitch 7 in the ON position Mechanical Bin Control Standard Ice Storage Bin S1 dip switch 7 in the OFF position 2 Startup POWER OK LED on Move the control switch to the ICE position then move the povver svvitch to the ON position The POVVER OK LED turns on Diagnosis POWER OK LED Check that the POWER OK LED is on lf not check for proper supply voltage 115VAC input to the CT main breaker or fuse and power switch Next check for proper low voltage 24VAC output from CT and that the 1A fuse is good Check for 24VAC from K8 connector pin 1 white red W R to K8 connector pin 2 light blue LBU If 24VAC is present and the POWER OK LED is off CB is bad and must be replaced 3 IS Power Supply CB supplies 20VDC to IS Diagnosis Che
48. ly 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 switch 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
49. n their correct positions 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 assembiy then remove the spout Remove the bolt and lift off the cutter Install the new cutter Replace the bolt Replace the spout Sa x T Replace the top and side panels in their correct positions 45 8 Plug the unit into the electrical outlet then move the povver svvitch 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 povver svvitch 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 Allovv the vvater to drain from the evaporator 6 Remove the top and side panels 7 Remove the strap connecting the spout to the chute assembiy then remove the spout 8 Remove the cutter bolt and lift off the cu
50. nd low water safety timer resets 30 second GM delay timer starts If 90 second low water safety timer terminates before UF S closes WV remains energized and a 1 beep alarm sounds b Ice Purge Cycle GM LED is on 30 second GM delay timer terminates GMR X2 on CB 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 press the SERVICE button on CB after GM starts WARNING Risk of electric shock Care should be taken not to touch live terminals Note UF S must be closed before GMR will energize c Freeze Cycle COMP and GM LEDs are on 5 minute ice purge timer terminates GMR X2 on CB GM GMPR and EH continue CR X1 on CB and PDS energize When CLPS in SRC closes MC energizes allowing Comp and FMR to energize CCH de energizes As water in the evaporator cools ice starts forming within 4 to 6 minutes This time frame depends on the inlet water and ambient temperature conditions UF S and LF S operate WV as needed to continue the ice making process This continues until IS activates allowing CB to de energize X1 on CB and PDS The unit goes into pump down CLPS opens MC de energizes de energizing Comp and FMR CCH energizes 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 in the off position factory default position 1 hour drain cycle timer terminates 2
51. ng Socket Head Cap Screw and Split Lock Washer 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 povver svvitch 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 assembiy then remove the spout Remove the bolt from the auger and lift off the cutter and washer 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 O2 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 housing 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 i
52. ntinue VVhen LF S closes nothing happens at this time VVhen UF S closes VVV de energizes 90 second lovv vvater safety timer fill timer terminates and 30 minute freeze timer starts If UF S remains open 90 seconds after WV energizes LF S opens fill timer exceeded a 90 second shutdown cycle starts CB X1 relay de energizes de energizing PDS Refrigeration circuit lovv side pressure drops to 9 PSIG opening CLPS CLPS opens de energizing MC Comp and FMR CB signals a 1 beep alarm every 5 seconds 90 second purge timer starts GMR X2 on CB GM GMPR and EH continue 90 second purge timer terminates GMR X2 on CB GM GMPR and EH de energizes VVV and 1 beep alarm continue until UF S closes Diagnosis Check that VVTRIN LED is on f not check that LF S is open See IV E Float Switch Check and Cleaning If LF S is open and VVTRIN LED is off CB is bad and must be replaced If VVTRIN LED is on check that the reservoir fills If not check for water supply line shut off valve closed clogged water filters and clogged VVV screen Next check 24VAC to WV from CB K2 connector pin 8 white brown VV BR wire to a light blue LBU neutral wire Check for continuity through WV solenoid If open replace WV If WV is energized and refill exceeds 90 second low water safety timer fill timer with no water in the reservoir check for DV leaking If reservoir is full and overflowing check that UF S closes If not check UF S continuit
53. ntinuity red R wire to black BK wire Clean or replace if necessary See IV E Float Switch Check and Cleaning Note Low Water Safety If UF S remains open 90 seconds after WV energizes a 1 beep alarm sounds This alarm resets automatically once UF S closes 7 Ice Purge Cycle GM LED is on WV de energizes and WTRIN LED turns off 30 second GM delay timer and 30 minute freeze timer start The 30 second GM delay timer terminates GMR X2 on CB GM GMPR and EH energize 5 minute ice purge timer starts Diagnosis If GM LED is off check that WV de energizes and UF S closes If GM LED is on and GM is off confirm 115VAC at CB K1 connector pin 3 brown BR to white W neutral Check for 115VAC at CB K1 connector pin 2 white black W BK to a white W neutral If no voltage is present CB is bad and must be replaced If 115VAC is present check GM fuse GM internal protector GM windings and capacitor and GM coupling between auger and GM 27 8 Freeze Cycle GM and COMP LEDs are on GM LED GMR X2 on CB GM GMPR and EH continue COMP LED turns on and PDS energizes Once the refrigeration circuit lovv side pressure rises to 29 PSIG CLPS closes energizing MC which energizes Comp and FMR Ice production begins 4 to 6 minutes after Comp and FMR energize depending on ambient and water conditions FS Diagnosis Check that COMP LED is on and that PDS energizes If COMP LED is off check DC voltage across GMPR
54. nual should be read carefully before the icemaker is serviced or maintenance operations are performed Only qualified service technicians should install service and maintain the icemaker Read the vvarnings contained in this booklet carefully as they give important information regarding safety Please retain this booklet for any further reference that may be necessary CONTENTS Important ale falar b as koda 5 l Bon m DR 7 5 1 aT m ub 7 COC SUN N NT e e 8 HM eneral A SANN ANS m EO 9 5 0 LIEN CAN l ta at e a a ek l BUDLU 9 T 6emak6r i n ka ko i b 9 osa n a be ai ke 10 SACEMAKING Em 11 B Sequence ot DETAL eR 12 1 Sequence Cycles and 12 ci sr TC 12 b Ice Purge ee T 12 Cola DU 12 d Drain Cycle en ee b a ke DE 13 zen Pen peo eL ER 14 2 Seq nt Flow a 15 Dn eh BEI UD Rad 16 To Control Board ANOU a b mut MEM MEUM E 17 2 LED Lights and Audible Alarm 18 9 Controls and PAS UNS vejetasyon ya os ne e dan 19 a Default Dip Switch Settings inrunner A eske 19 b Infrared Sensor Shutdown Delay S1 dip switch 1 2 3 19 c Drain Frequency Control 81 dip switch 4 20 d Continuous Dispensing Timer S1 dip switch 5 amp 6 20 e Bin Control Selector 51
55. o 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 recommenas only virgin refrigerant or reclaimed refrigerant which meets ARI Standard 700 latest edition be used 6 A liquid charge is required for 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 CAUTION 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 unit running 9 Close the high and low side service valves 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 B Important Notes for Component Replacement CAUTION When replacing a component listed below see the notes to help ensure proper operation Component Haes 0 Compressor Install a new drier start capacitor run capacitor and start relay Expansion Valve e Install a new drier Attach the expansion valve b
56. om 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 neutral cleaner Rinse thoroughly after cleaning 17 Plug the unit back in Make sure the control svvitch is in the ICE position then move the povver svvitch to the ON position to start the automatic icemaking process B Maintenance This icemaker must be maintained individually referring to the instruction manual and labels provided vvith the icemaker The schedule belovv is a guideline More frequent maintenance hovvever may be required depending on vvater quality the icemaker s environment and local sanitation regulations Consult vvith your local distributor about inspection and maintenance service To obtain the name and phone number of your local distributor visit www hoshizaki com or call Hoshizaki Technical Support at 1 800 233 1940 in the USA A WARNING 1 Only qualified service technicians should attempt to service this icemaker 2 Move the power switch to the OFF position and unplug the unit from the electrical outlet before servicing 55 Maintenance Schedule Maintenance Schedule Frequoneylaea _ k _ S Monthly External Water Check for proper pressure and change if necessary Filters Icemaker 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 Cl
57. on 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 their correct positions nfrared Sensor Lens 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 Othervvise continue to step 11 a Remove the float switch assembly from the reservoir cover b VVipe 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 Float Switch Assembly Reservoir Cover Reservoir Fig 10 52 11 VVipe 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 vvith a clean damp cloth Infrared Sensor i Infrared Sensor d Housing Lens Fig 14 12 Replace the top panel in its correct position Move the control switch to the ICE position then plug the unit back in Move t
58. or paddle engaged and sounds a 9 beep alarm Legend CB control board CCH crankcase heater CLPS control low pressure switch Comp compressor CR compressor relay pump down solenoid DT drain timer DV drain valve EH evaporator heater FMR fan motor remote F S float switch GM gear motor GMPR gear motor protect relay GMR gear motor relay IS infrared sensor 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 J041009 UIQ 10sues poueiiuil SI Jojou Jeob WN9 Ajayes 1eye mop 1euun 1 3 Jejeoy Joje1ode e H3 9A E Ul amp Jp AG Joun ureJp 1q youms yeoy jeddn S 4n Jeuun obind La SABA piou os uwop duind Sad Jo11uoo ulq ejofo ureip 9q dnyoeq jeoiueuoeui 38IN Josse ldwoo dwo9 youms eO 19MO S 471 YMS eunsseJd wo jouuoo saq19 senumuoo IND 8 21 YNWA 21 dwoj suedo 4412 Sad Auo 20 1999 LA ZI UI L Sq sezi amp ieue ep 21 N9 JA 5912411 1 10 ulul 0L Ajuo 20 seziBieue Aq Sueis OG JO PIPAN SI AOQE TO Q 111 L O AOQE 9 2AJ eBung Z p uouws dip LS jeuondo 161590 9 9 9 2 ueq ZI UI L E yo GAT Molla SI uo q31uee o SI E uleiq SNUIIN OL eB
59. ort out power supply to test for voltage 6 Always replace the whole control board assembly if it goes bad 16 1 Control Board Layout F A Control Board e K9 Connector 5VDC 1 amp 2 Control Switch Open Icemaking e GM LED e COMP LED Closed Drain X2 Relay X1 Relay 3 amp 4 Jumper Gear Motor Pump Down Evaporator Heater Solenoid Valve 5 amp 6 Gear Motor Protect Relay Circuit e SERVICE Button Ice Purge Cycle Bypass TIT e Ki Connector 115VAC 3 115VAC Input 2 Gear Motor a K8 Connector EDU 24VAC and 5VDC Evaporator B s Heater 1 Transformer 24VAC Input 2 Transformer 24VAC Neutral e FLUSH LED 2 or 3 8 44 Mechanical Backup Bin X3 Relay n Control BVDC Drain Valve m 5 Float Switch Common 5VDC e K2 Connector STR Lat 16 Upper Float Svvitch 24VAC I 7 Lower Float Switch 10 Drain Valve B go prai 8 Inlet Water Valve TORT 9 Transformer 24VAC Input ui zi o 7 Transformer e K7 Connector Open 24VAC Input L Ni e WTRIN LED mi E e POWER OK LED X4 Relay E 75 Inlet Water Valve mi 6000000006 S1 Dip Switch Water Dispensing Valve Agitation
60. otice II General Information A Construction 1 Icemaker a FS 1022MLH C Mechanical Backup Bin Control nlet VVater Valve Povver Cord 22 Float Switch cemaking Unit m lt S Cutter m Extruding Head p Evaporator el T 11 17 li a Evaporator Heater a Ice Chute L w A Thermostatic Strainer MS DT Expansion Valve Solenoid Valve Control Box High Side Service Valve Low Side Service Valve Drain Valve Infrared Sensor Gear Motor 2 Condensing Unit a SRC 10H Fan Motor Condenser Headmaster C P R TELS High Pressure Switch High Side Service Valve Compressor Liquid Line Suction Line Connection Connection Control Box Safety Low Pressure Switch Control Low Pressure Switch y 10 3 Icemaking Unit Cutter Extruding Head VVasher Upper Bearing Seal Bolts and VVashers Evaporator Heater Auger Evaporator Mechanical Seal Socket Head Cap Screvv O Ring T and Split Lock Washer Housing Lower Bearing Spline Coupling Hex Bolt and Washer Socket Head Cap Screw and Split Lock Washer Gear Motor 11 B Sequence of Operation The steps in the sequence are as outlined belovv This unit utilizes a control board to svvitch the icemaker components on and off as ne
61. 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 inconsistant 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 2 Remove F S assembly from the reservoir cover See Fig 5 36 3 Wipe down F S assembly with a mixture of 1 part Hoshizaki Scale Avvay and 25 parts warm water Rinse the assembly thoroughly with clean water 4 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 5 Rinse the float switch assembly thoroughly with clean water and replace in its correct position 6 Plug the unit into the electrical outlet then move the power switch to the ON position to start the automatic icemaking process 7 Replace the front panel in its correct position 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 JA Reservoir Cover br Fig 5 Red R n
62. spense 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 S1 Dip Switch Settin p Infrared Sensor Shutdown Delay ON OFF OFF 100 Seconds 1 6 minutes Factory Default 1100 Seconds 18 3 minutes overflow c Drain Frequency Control S1 dip suvitch 4 This unit is factory set for optimum performance with the 1 in 1 drain cycle S1 dip switch 4 in the OFF position This setting allows for removal of sediment from the evaporator without interrupting the icemaking process An optional 1 in 12 drain cycle is S1 Dip Switch Settin Drain Timer Interval Drain Valve Open available 2 Seconds ON 1 in 12 11 Hours 45 Minutes 10 Minutes d Continuous Dispensing Timer S1 dip switch 5 8 6 DCM models only The dispense mode svvitch 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 Suvitch Setting D ispense Time Nes ON 60 Seconds ON e Bin Control Sele
63. 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 CAUTION 1 Always install a new drier every time the sealed refrigeration system is opened 2 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 3 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 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 12 13 Remove the insulation and the expansion valve bulb on the suction line Disconnect the inlet and outlet tubing
64. tter and vvasher 9 Remove the seal bolts and lift off the extruding head 10 11 Place the nevv extruding head in place and tighten dovvn the seal bolis Replace the vvasher 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 povver svvitch 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 povver svvitch to the ON position Allovv the vvater to drain from the evaporator 6 Remove the top and side panels 8 9 Remove the cutter bolt cutter vvasher and dovvel pin Remove the extruding head from the auger and place on the nevv auger 7 Remove the strap connecting the spout to the chute assembiy then remove 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 svvitch
65. tuator 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 11 12 13 Replace the front panel in its correct position 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 povver svvitch to the OFF position 2 Move the control svvitch to the DRAIN position 3 Move the power switch to the ON position 4 Allovv the vvater to drain from the evaporator then move the povver svvitch to the OFF position and the control svvitch 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 conn
66. ulb 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 e Secure the bulb with the clamp and holder then insulate it Pump Down Install a new strainer and drier Solenoid Valve Use copper tube of the same diameter and length when replacing valve lines Fan Motor 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 Assembiy Evaporator Heater J Upper Bearing pressed into auger Seal Bolts and Washers Socket Head Cap Screw and Split Lock Washer Truss Head Screw w Rubber Washer p e Gear Motor Barrier Gear Motor Fig 7 Cutter Hex Head Bolt Cutter Extruding Head Dowel Pin Auger O Ring Seal Bolts and Washers Socket Head Cap Screw and Split Lock Washer Mechanical Seal Lower Bearing pressed into lower housing Lower Housing Hex Bolt and Washer Spline Coupli
67. ung aa1 z s nulul Heis H t oq s eniul 1G L Jo 031 Mola SI uo q31u 9 SI Ape ls 10 Sulusel q31 SIT uo q31 ueei SI cz youms dip VS Aq Aejap SI spunos wee d q 6 e pue suedo gg ayewa eui UMOPINUS ol S TE SI J ejoN ueisou seyewool b HO yewa eBung Z uig L s nunuo AM s nulluo W9 senunuoo H3 seziG1ou9 ap YING sezib1oua ap dwog suedo 4410 8 21 Sad spunos uueje d q L sezib1ous ap WD 2 H3 s nunuo sad senunuoo W9 s nunuo s nunuo H3 senunuoo dwog seziBjeue ep AM S BU ULL 14 senunuoo sad s nunuo INS senunuoo HIA s nunuo H3 senunjuoo dwog sezibloue AM o s 06 sueis 14 senunuoo M senunuoo H3 5 21 YINA 21 dwog 8921 AM Sejeuiuuel Ld senuljuoo AM p p x 14 pesojo s 4n uedo S 41 sesop 4412 sezifieue W9 pesojo s 4n 08S 06 sueis 14 s nunuo uueje d q L uedo s 4n pesoj S 41 uedo s 4n 2 Sad seziBieue HI p solo S 41 S ZI A U AM S b 295 06 ZIEL ld P s x 14 s yeulun 14 QA d es spuooes 06 Ho Q31 MOIIBA SI Spuooes 06 spuooes 06 saeinulu g s UJDUJIXe A uo 1 71 SI 1 1 Sueis sulbeq ld oes 06 wnwixey Ld eBueuo jou seop SEIS l O uo Q3 1 0 H3MOd snjejs
68. ury fire or severe damage to equipment e The remote condensing unit requires an independent power supply of proper capacity See the nameplate for electrical specifications Failure to use a properly sized breaker or fuse can result in a tripped breaker blown fuses or damage to existing wiring This could lead to heat generation or fire e THIS UNIT MUST BE GROUNDED Failure to properly ground the remote condensing unit could result in death or serious injury e Lockout Tagout to prevent the power supply from being turned back on inadvertently I Specifications A Icemaker 1 FS 1022MLH C AC SUPPLY VOLTAGE GEAR MOTOR OTHER MAXIMUM FUSE SIZE MAX HACR BREAKER USA ONLY MAX CIRC BREAKER CANADA ONLY MINIMUM CIRCUIT AMPACITY APPROXIMATE ICE PRODUCTION PER 24 HR Ib day kg day Reference vvithout marks SHAPE OF ICE ICE QUALITY APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W kWH 100 Ibs ELECTRIC W kWH 100 Ibs POTABLE WATER gal 24HR gal 100 Ib EXTERIOR DIMENSIONS VVxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN REFRIGERATION CIRCUIT ICE MAKING SYSTEM HARVESTING SYSTEM ICE MAKING WATER CONTROL COOLING 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 LOW WATER
69. 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 chute bracket between the spout and chute 53 3 Pour the sanitizing solution over the extruding head until the evaporator assembly and the reservoir are full and the solution starts to overflovv 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 9 Soak the spout O ring packings 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 CAUTION If the solution is left on these parts they will rust 11 Replace all parts in their correct positions
70. y red R wire to black BK wire Clean or replace if necessary See IV E Float Switch Check and Cleaning Note Each time UF S closes 30 minute freeze timer starts The 30 minute freeze timer resets when UF S closes again If UF S does not close again within 30 minutes CB shuts down the unit and sounds a 5 beep alarm every 5 seconds See 1 2 LED Lights and Audible Alarm Safeties 10 Shutdown See IV D Bin Control Check Legend CB control board CLPS control low pressure switch Comp compressor DV drain valve EH evaporator heater FMR fan motor remote 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 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 shovv a visible defect and that you suspect is bad alvvays conduct the follovving check procedure This procedure vvill help you verify your diagnosis Before proceeding check for proper voltage per unit nameplate Check that the 24VAC 14 fuse and the 115VAC 3A GM fuse are good When checking for high voltage 115VAC alvvays choose a vvhite VV neutral vvire to establish a good neutral connection VVhen checking for lovv voltage secondary 24VAC alvvays choose a light b
71. y time the sealed refrigeration system is opened 2 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 3 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 low 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 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 42 4 Close the lovv side valve and high side valve on the gauge manifold 5 Disconnect the gauge manifold hose from the vacuum pump and attach it t

Hoshizaki FS-1022MLH-C User's Manual

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