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Hoshizaki FD-1001MLH(-C) Refrigerator User Manual

1. 43 d 1 in 1 Drain 44 1 in 12 Drain 45 f Infrared Sensor 46 g Mechanical Bin Control Shutdown aatia oin apap neos 47 Low Water Safety Mte sumtus 48 Pressure SWIIGD sasesana aaraa 49 8 1 NENNT RES 50 1 FD 1001MAH Air cooled 50 2 FDA 00TMAH G air cooled 51 3 FD 1001MWH 52 4 FD 1001MWH C waler cODIBd 53 5 54 6 FD 1001MRH C remote air cooled 55 7 FD 1001MLH low side parallel rack 56 8 FD 1001MLH C low side parallel rack 57 4 S rvic ep m 58 A N68 Production GHG qu nin 9 M et 58 B Diagnostic Procedure inca PO Te C 58 GC
2. 92 L Removal and Replacement of Evaporator Pressure Regulator E P R MLH Model low side parallel tack SySEtelri uo nasa res 93 M Removal and Replacement of Water 93 93 PIRA ROTER 94 Removal and Replacement of Control 95 Vi Cleaning and Maintenance qmm 96 A Cleaning and Sanitizing 96 Te Cleaning TC 96 2 Cleaning PIODBgUl sssrinin aiaa adaa inaaianei iadi 96 3 Sanitizing Solut 98 4 Sanitizing Procedure Mtia 98 Sanitizing Proced re Final A EE tuu 99 UT Mmmm 100 C Preparing the Icemaker for Long Storage 102 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 WARNING Indicates a hazardous situation which could result in death or serious injury CAUTION Indicates a situation which could result in damage to the unit IMPORTANT Indicates important information a
3. 18 1 FD 1001MAH C 18 2 FD 1001MWH C water cooled 19 3 FD 1001MRH C remote 20 4 FD 1001MLH C low side parallel rack system 21 BCS Making sg Rc 22 B Sequence Of Qperati M pata 23 1 Sequence Cycles Shutdown lt 23 a Fill 23 b Ice P rge Cyle 23 C Freze EARE E E AEN ENA 23 d Drain 23 SNUtJOWM C 24 Flow aN 25 Control ES ONO E OR 26 X 27 28 ly Low Water Safety 28 b lce Pure 5 28 C Freeze
4. 39 2 FD 1001MLH C CONTROL BOARD SERVICE BUTTON DIP SWITCH COMPRESSOR RELAY GND GR NEUT LINE BR 115 120 60 1 lt gt WIRE COLOR CODE POWER SWITCH LIQUID LINE SOLENOID BR 2 SUCTION LINE SOLENOID VALVE 4 dl lt 5 6 3 4 DARK BLUE 5 6 T 8 d W R WHITE RED 11 rs CIRCUIT PROTECT W BK WHITE BLACK tese b GEAR MOTOR W BR WHITE BROWN PROTECT RELAY w o WHITE ORANGE p BR 24MFD FUSE P 3A BK b 0 T2 THERMAL PROTECTOR e e 115V EVAP HEATER ANH OL TRANSFORMER 24V CUBELET C ONLY LBU BK BR R CONTROL 51 SWITCH 11 2 31 W BK W BK INFRARED SENSOR BIN T TE CONTROL CONTROL BOARD M HI PRESS 12 SWITCH 3 S R 4 w 156 5 DBU W O DBU MECH BIN FLOAT S SWITCH CONTROL Wo 40 3 Sequence Wiring Diagram a Fill Cycle Power supply is turned on Inlet water valve energizes and reservoir fills CONTROL BOARD SERVICE BUTTON DIP SWITCH COMPRESSOR RELAY
5. Red Positive Test Lead Black Negative lt Test Lead Multimeter K6 Connector Infrared Sensor Fig 4 5 5VDC control board switch output checks Control Switch High Pressure Switch Gear Motor Protect Relay terminals 3 amp 5 Mechanical Bin Control Proximity Switch and Float Switch 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 5 Then place the black negative test lead from the multimeter to the corresponding pin to complete the 5VDC check If the icemaker is in alarm beeping see 2 9 LED Lights and Alarm Safeties Chart Red positive test lead to white K5 connector pin closest to red K4 connecotor Red Positive Test Lead Fig 5 Multimeter Black Negative Test Lead gt Control Switch white black W BK High Pressure Switch 2 of yellow Y wires LT uus Le ze oes Gear Motor Protect Relay sJ 77 terminals 3 and 5 7 white orange W O 2 Control Board K9 Connector 62 a Control Switch K9 connector pins 1 and 2 white black W BK wires 5VDC is present from the white K5 connector pin closest to red K4 connector to the K9 connector pin 1 white black W BK wire at all times If 5VDC is not present the con
6. Evaporator AMD A Pressure T Regulator AN a HI Ex 4 A Suction Line 3 Valve Ice Chute Infrared Sensor 21 5 Ice Making Unit Cutter Extruding Head Upper Bearing Allen Head Cap Screw Extruding Head Heater Cubelet Models Only Auger Cylinder Insulation Mechanical Seal O Ring Allen Head Cap Screw Housing Lower Bearing l Hexagon Head Bolt Spline Coupling rm imu zc unn Sequence of Operation 1 The steps in the sequence are as outlined below This unit utilizes a control board to switch the components on and off as needed When power is supplied the power switch is in the ON position and the control switch is in the ICE position CB POWER OK LED comes on Sequence Cycles and Shutdown a Fill Cycle WTRIN LED is on WV energizes and fill cycle begins UF S closes and WV de energizes 30 second GM delay timer starts If UF S remains open during fill cycle longer than 90 seconds 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 FM FMR 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 the control board after GM starts WARNING Risk of electric shock Care should be taken not to touch live t
7. 28 d Drain EE GN EEEE 28 e Bin Control Shutdown Dele pun 28 f High Voltage and Low Voltage roter nennen 29 g LED Lights and Alam Safeties 29 3 Low Water Safety 1 beep 30 b Control Switch in the DRAIN Position 2 beep alarm 30 High Pressure Switch 3 amp 4 beep 30 d Freeze Timer 5 Deep mese xr avara ma dove x BO Ea EB ERES spur RR ORG Qaae da 30 Low Voltage O Deep alarm 30 f High Voltage 7 beep aptata 31 g Gear Motor 8 beep alarm 31 h Bin Control 9 beep alarm cet 31 A Controls 6 31 a Default Dip Switch Settings 31 b Infrared Sensor Shutdown Delay S1 dip switch 1 2 amp 3 32 c Drain Frequency Control 51 dip switch 4 32 d Conti
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9. 3 When brazing protect the C P R and drier by using wet cloths to prevent the C P R and drier from overheating Do not allow the C P R or drier to exceed 250 F 121 C 1 Turn off the power supply 2 Remove the panels from the remote condenser unit 3 Recover the refrigerant and store it in an approved container 4 Before heating break off the stub on the dome to release the dome charge 5 Disconnect the headmaster 6 Place the new headmaster in position 7 Remove the drier then place the new drier in position 8 Braze all fittings with nitrogen gas flowing at a pressure of 3 to 4 PSIG 9 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 10 Evacuate the system and charge it with refrigerant See the rating label inside the icemaker for the required refrigerant charge 11 Replace the panels in their correct positions 12 Turn on the power supply 91 Removal and Replacement of Liquid Line Valve or Suction Line Valve MLH Model low side parallel rack system CAUTION 1 Always replace the strainer when replacing the liquid line valve 2 Always install a new drier every time the sealed refrigeration system is opened 3 Do not replace the drier until after all o
10. Check the 51 dip switch settings see II C 4 a Default Dip Switch Settings to assure that they are in the correct positions For proper operation of IS confirm that S1 dip switch 7 is in the ON position WARNING 1 Risk of electric shock Use extreme caution and exercise safe electrical practices 2 Moving parts e g fan blade can crush and cut Keep hands clear 58 5 on the power supply then move the power switch to the ON position Make sure the control switch is in the ICE position CB POWER OK LED and IS green LED turn on Diagnosis POWER OK LED Check that CB POWER OK LED is on If not check for proper supply voltage 115VAC input to the control transformer If 115VAC is not present check the power switch and breaker Next check that the circuit protect relay is de energized closed between terminals 1 and 5 If the circuit protect relay is energized 208 230VAC confirm proper power supply The circuit protect relay helps protect 115VAC components from exposure to 208 230VAC Next check for proper outpout voltage 24VAC from the control transformer If POWER OK LED is off check 24VAC at CB K8 connector 1 white red W R to pin 2 light blue LBU If 24VAC is not present replace the control transformer If 24VAC is present and POWER OK LED is off CB is bad and must be replaced Diagnosis IS If POWER OK LED is on and IS green LED is off check 20VDC at CB K6 connector brown BR
11. Control Board 61 DEIN UUE 66 UNI Infrared Sensor CHECK 66 2 Mechanical Bin Control Check 67 E Float 9Swileh Clieck and Cleaning gt duque 69 UM epe WIC SR Em 69 2 Float Switeh aed 69 71 1 ING lce dedic 71 2 LOW ICE PROG UCT OM e a E 74 M 75 V Removal and Replacement of Components 76 A Service Tor Belrigerabit LINES uad opns ea ttp su tid petat au cest irre xac 76 1 Refrigerant Recovery except 76 2 Brazing 17 Evacuation and Recharge 404 except 77 4 Refrigerant Recovery Evacuation and Recharge Model low side parallel zie dvi e 78 B Removal and Replacement of 79 C Removal and Replacement of Expansion 80 D Removal and Replacement of Evaporato
12. WHITE LIGHT BLUE DARK BLUE WHITE BLUE WHITE RED WHITE BLACK WHITE BROWN WHITE ORANGE START AP 108 130MFD BK RUN CAR 25MFD REMOTE ONLY CRANKCASE HEATER P CIRCUIT PROTECT RELAY 8 BR GEAR MOTOR PROTECT RELAY AIR COOLED ONLY REMOTE ONLY BK co TUS FAN MOTOR F N MOTOR THERMAL PROTECTOR CONTROL TRANSFORMER CUBELET C ONLY 4 CONTROL SWITCH 6110023 oo INFRARED W BK SENSOR BIN CONTROL ME BI PRESS BR tr KG nacer rbd EOE E CERA VERA ERR DBU MECH BIN FLOAT SWITCH CONTROL 45 f Infrared Sensor Shutdown Ice fills storage bin to level of activating infrared sensor infrared sensor yellow LED turns on flashing or steady Infrared sensor shutdown sequence begins For further information see II B 1 e Shutdown Cycle CONTROL BOARD 1 SERVICE BUTTON NEUT W GND GR 208 230 60 1 3 WIRE WITH NEUTRAL FOR 115 E BR 12 BK POWER SWITCH R__ RED
13. wire to dark blue DBU wire If 20VDC is not present confirm dip switch 7 is in the ON position If dip switch 7 is in the ON position and 20VDC is not present CB is bad and must be replaced If IS yellow LED is on or flashing move ice away from IS lens If no ice is present clean the lens with a warm clean damp cloth If cleaning the lens does not work replace IS Diagnosis MBC Confirm S1 dip switch 7 is in the OFF position Check that the actuator paddle is properly positioned Check for continuity across MBC proximity switch When MBC proximity switch is closed 5VDC is present at CB K8 connector pin 3 or 4 gray GY to CB white K5 connector pin closest to red K4 connector BVDC See Fig 6 If 5VDC is not present the control board is bad and must be replaced CB monitors the following switches with 5VDC High Pressure Switch Gear Motor Protect Relay relay terminals 3 amp 5 and Mechanical Bin Control When 5VDC is present across any of these switches the switch 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 terminating the 90 second low water safety timer starting the 30 minute freeze timer and de energizing WV Diagnosis Check that WTRIN LED turns on If not make sure IS yellow LED is off If not move ice away from IS If IS yellow LED does not turn off clean t
14. 51 X1 WIRE COLOR CODE BLACK BROWN ORANGE YELLOW R GREEN Y GRAY PINK VIOLET WHITE U LIGHT BLUE DBY DARK BLUE W BU WHITE BLUE W BK WHITE BLACK W BR WHITE BROWN W O WHITE ORANGE NEUT W GND GR 208 230 60 1 3 WIRE WITH NEUTRAL FOR 115V LI BR POWER SWITCH 12 BK CUB ELET C ONLY START T 7 REMOTE ONLY SORS SENE ED BK CRANKCASE HEATER Sj COMP LE 4 6 18 CIRCUIT PROTECT RELAY w BR GEAR MOTOR PROTECT RELAY AIR COOLED ONLY REMOTE ONLY BK BR CAP 5MFD dH BR e C gt FAN MOTOR MOTOR T2 THERMAL GEAR PEAR PROTECTOR HEATER BK CONTROL TRANSFORMER BIN CONTROL NFRARED SENSOR CON SW W BK TROL TCH W BK HI PRESS SWITCH FLOAT SWITCH MECH BIN CONTROL 41 b Ice Purge Cycle Upper float switch closes 30 second gear motor delay timer starts After 30 second gear motor delay timer terminates 5 minute ice purge ti
15. CF 50 70 90 PER 24 HR 70 930 423 80 825 375 730 332 Ibs day kg day 645 294 APPROXIMATE ELECTRIC CONSUMPTION watts APPROXIMATE WATER CONSUMPTION PER 24 HR gal day l day EVAPORATOR OUTLET TEMP F CC HEAD PRESSURE PSIG kg cm G SUCTION PRESSURE PSIG kg cm G CONDENSER VOLUME 74 5 cu HEAT OF REJECTION FROM CONDENSER 8900 BTU h AT 90 WT 70 F HEAT OF REJECTION FROM COMPRESSOR 1400 BTU h AT 90 F WT 70 F Note We reserve the right to make changes in specifications and design without prior notice 55 7 FD 1001MLH low side parallel rack system Awaiting Data Note We reserve the right to make changes in specifications and design without prior notice 56 8 FD 1001MLH C low side parallel rack system Awaiting Data Note We reserve the right to make changes in specifications and design without prior notice 57 IV Service Diagnosis WARNING This unit should be diagnosed and repaired only by qualified service personnel to reduce the risk of death electric shock serious injury or fire Risk of electric shock Use extreme caution and exercise safe electrical practices Moving parts e g fan blade can crush and cut Keep hands clear CHOKING HAZARD Ensure all components fasteners and thumbscrews are securely in place after the unit is serviced Make sure that none have fallen into the dispenser unit storage bin Make sure a
16. COMPRESSOR RELAY WIRE COLOR CODE RED P PINK DARK BLUE WHITE BLUE WHITE RED W BR WHITE BROWN W O WHITE ORANGE NEUT CW GND GR 208 230 60 1 3 WIRE WITH NEUTRAL FOR 115 k 1 LICBR L2 BK POWER SWITCH START REMOTE ONLY BR BRE 108 130 6 Me CRANKCASE HEATER 2 o e ec 5 6 3 4 al ipee CIRCUIT PROTECT T b 28 w RELAY BR REMOTE ONLY FAN MOTOR GEAR MOTOR m PROTECT RELAY R BR FUSE 545 CONTROL bots FR SWITCH WERARED W BK W BK SENSOR i BIN m CONTROL HI PRESS SWITCH MECH BIN FLOAT SWITCH CONTROL 43 d 1 1 Drain Cycle Compressor liquid line valve suction line valve on MLH models fan motor fan motor remote and gear motor continue Drain valve energizes for 2 seconds every hour CONTROL BOARD SERVICE BUTTON 22 DIE SWITCH NEUT W GND GR 208 230 60 1 3 WIRE WITH NEUTRAL FOR 115V X1 COMPRESSOR RELAY E LI CBR L2 BK POWER SWITCH WIRE COLOR CODE R S AR REMOTE ONLY BR BR
17. K8 Connector 24VAC 5VDC 115VAC n Transformer 3 Input black 24VAC Input 2 ae 1 white red brown E Transformer 24VAC Neutral 2 light blue e ba 2 B Mechanical Bin Control 3 to 4 gray Drain Valve 10 white blue Float Switch Transformer Br 9 white red Upper Float Switch Inlet Water Valve gt EO red 8 white brown 2 Open 5VDC to 5 black a Closed OVDC to 5 black Transformer S Lower Float Switch Input a O 7 dark blue 7 white red mm _ gt Open 5VDC to 5 black AM DM Gosecovbo to 5 black K7 Connector open E POWER OK LED _ 51 Dip Switch WT K6 Connector 20VDC Infrared Sensor Closed 5VDC common terminals Brown BR White W Dark Blue DBU Fig 6 65 yellow LED off 20VDC DBU to BR 20VDC DBU to W OVDC W to BR Open yellow LED flashing or steady 20VDC DBU to BR OVDC DBU to W 20VDC W to BR D Bin Control Check 1 Infrared Sensor Check IMPORTANT Make sure S1 dip switch 7 is in the ON position This allows the control board to monitor the infrared sensor along with the mechanical bin control 1 Turn off the power supply 2 Remove the front panel top panel and control b
18. S Jf ueuM uo HN senunuoo AM uo AIS W4 AM deeq uo ATI uo Hd IND 14 14 6S 06 lt 1114 uo dwog uo s 4n 298 06 uo 14 uo 5 47 UO AM spuooes 06 Q31 SI uo 141 49949 I uo G37 H3MOd 301 YOWME U9IIMS 1 dnes 1 sejnuiu Spes WD uonnq 39IAH3S sseJd ssed q oL 9 2 2 eBung 29 YMS dig 15 9 2A2 111 L Heys G4 25 C Control Board A Hoshizaki exclusive control board is employed in FD 1001MAH C FD 1001MWH C FD 1001MRH C and FD 1001MLH C Modular Flakers All models are pre tested and factory set CAUTION The control board is fragile handle very carefully The control board contains integrated circuits which are susceptible to failure due to static discharge It is especially important to touch the metal part of the icemaker before handling or replacing the control board Do not touch the electronic devices on the control board or the back of the control board to prevent damage to the control board Do not change wiring and connections Never misconnect terminals Do not short out power supply to test for voltage Always replace the whole control board if it goes bad The control board provides the following safeguards High and
19. S OS CIdOMED 2 2 LBU LIGHT BLUE e 9 DBY DARKBLUE d W BU WHITE BLUE e E W R RED 35 4 W BK WHITE BLACK nm 5 6 8 W BR WHITE BROWN x WHITE ORANGE CIRCUIT PROTECT T b 18 w RELAY BR REMOTE ONLY GEAR MOTOR PROTECT RELAY W R BR NE 24MFD FUSE iu gt gt oo C2 THERMAL GEAR MOTOR PROTECTOR HEATER FAN MOTOR FAN MOTOR CONTROL TRANSFORMER CUBELET C ONLY CONTROL 2 2 TI SWITCH INFRARED SENSOR BIN CONTROL CONTROL BOARD HI PRESS SWITCH MECH BIN FLOAT SWITCH CONTROL 44 1 12 1 in 12 drain cycle initiates S1 dip switch 4 Compressor motor fan motor remote de energize 5 minute ice purge timer starts and gear motor continues 5 minute ice purge timer terminates gear motor de energizes Drain valve opens for 10 minutes CONTROL BOARD 51 SERVICE BUTTON 52 DIP SWITCH COMPRESSOR RELAY NEUT W GND GR 208 230 60 1 3 WIRE WITH NEUTRAL FOR 115V POWER SWITCH 2 BK LICBR WIRE COLOR CODE RED BLACK BROWN ORANGE YELLOW GREEN GRAY PINK VIOLET
20. capacitor 4 Check and Replace 5 Condenser water 5 Check and get pressure too low or off recommended pressure water cooled model 6 Water regulating 6 Clean valve restricted water cooled model Compressor 1 Inefficient compressor 1 Replace compressor g p 2 Faulty thermal 2 Replace compressor protector overload 3 Faulty capacitor 3 Replace components starter 74 3 Other Possible Cause 1 Icemaker will not stop a Bin Control 1 Erratic or defective 1 IV D Bin Control when bin is filled with Check ice 2 Abnormal noise a Fan Motor except 1 Bearing worn out 1 Replace water cooled model 2 Fan blade deformed 2 Replace fan blade 3 Fan blade does not 3 Replace move freely b Compressor 1 Bearings worn out or 1 Replace cylinder valve broken 2 Mounting pad out of 2 Reinstall position Refrigerant Lines 1 Rub or touch lines 1 Reposition other surfaces d Auger 1 Bearings or auger 1 Replace bearings or worn out auger See V D 1 Upper Bearing Wear Check e Gear Motor 1 Bearing or gear worn 1 Replace out damaged f Evaporator 1 Scale on inside wall 1 SCALE AWAY of evaporator freezing solution to clean cylinder periodically If the water is found hard by testing install a softener 2 Low refrigerant 2 Check charge check for pressures possible leak repair re charge 3 Expansion valve bad 3 Re
21. extruding head and the lower bearing in the housing should be replaced Instructions for removing the extruding head and housing are located later in this procedure Fig 12 Note Replacing the bearing requires a bearing press adaptor If one is not available replace the whole extruding head and housing 6 Remove the bolt Replace the cutter and then the cutter bolt 7 Replace the spout 8 Replace the panels in their correct positions 9 Turn on the power supply 2 Removal and Replacement of Cutter 1 Turn off the power supply 2 Remove the panels 3 Remove the strap connecting the spout to the chute assembly then remove the spout 4 Remove the bolt and lift off the cutter 6 Replace the spout 5 Install the new cutter and replace the bolt 7 Replace the panels in their correct positions 8 Turn on the power supply 82 3 Removal and Replacement of Extruding Head 1 Drain the water from the evaporator a Move the power switch to the OFF position b Move the control switch to the DRAIN position c Move the power switch to the ON position and allow the water to drain from the evaporator d Move the power switch to the OFF position then turn off the power supply 2 Remove the panels 3 Remove the strap connecting the spout to the chute assembly then remove the spout 4 Remove the bolt and lift off the cutter 5 Remove the allen head cap screws and lift off
22. front panel in its correct position 16 Open the water supply line shut off valve then turn on the power supply to supply water to the reservoir 17 After the gear motor starts turn off the power supply Remove the front panel then move the control switch to the DRAIN position Replace the front panel in its correct position 18 Turn on the power supply and allow the water system to drain for 5 minutes Note If you do not sanitize the unit go to step 14 in VI A 5 Sanitizing Procedure Final 19 Turn off the power supply then 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 2596 sodium hypochlorite solution chlorine bleach with 5 gal 19 1 of warm water 4 Sanitizing Procedure Initial 1 Make sure the power supply is off and the water supply line shut off valve is closed Remove the panels then move the power switch to the OFF position 2 Remove the strap connecting the spout to the chute assembly then remove the spout Remove the rubber O ring and nylon O ring if applicable at the top of the cylinder and also remove the packing between the spout and the chute 3 Pour the sanitizing solution over the extruding head until the evaporator assembly and the reservoir are full and the solution starts to overflow into the drain pan 98 4 Remove
23. leak B Removal and Replacement of Compressor 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 Note When replacing a compressor with a defective winding be sure to install the new start capacitor and start relay supplied with the replacement compressor Due to the ability of the POE oil in the compressor to absorb moisture quickly the compressor must not be opened more than 15 minutes for replacement or service Do not mix lubricants of different compressors even if both are charged with R 404A except when they use the same lubricant 1 Turn off the power supply 2 3 4 Remove the terminal cover on the compressor and disconnect the compressor wiring On remote air cooled models disconnect the crankcase heater Remove the panels Recover the refrigerant and store it in an approved container 5 Remove the drier and the discharge suction and process pipes 79 6 Remove the hold down bolts washers and rubber grommets 7 Remove the compressor Unpack the new compressor package 8 Attach the rubber grommets of the prior compressor to t
24. low voltage protection Provides component protection during low water supply Purges remaining ice in the evaporator Provides short cycle protection for the compressor 26 1 Control Board Layout GM LED X2 Relay GM FMR FMS K1 Connector FMS brown FLUSH LED Relay drain S DV e WTRIN LED X4 Relay WV K2 Connector 24VAC Drain Valve ex 10 white blue Transformer Input 9 white red Inlet Water Valve 8 white brown Transformer Input 7 white red Water Dispensing Valve Agitation Motor and Ice Dispensing LEDs not used on this model F A Control Board K9 Connector 5VDC e COMP LED X1 Relay Control Switch High Pressure Switch Comp 1 amp 2 white black 3 amp 4 yellow LLV Gear Motor Protect Relay Circuit SLV 5 amp 6 white orange ORE S2 SERVICE Button Ice Purge Cycle Bypass K8 Connector 24 and 5VDC Transformer 24VAC Input 1 white red Transfomer 24VAC Neutral 2 light blue z Mechanical Bin Control 2 3 amp 4 gray 5VDC 7 Float Switch 45 black VDO Upper Float Switch d 6 red STUT Lower Float Switch prr 7 dark blue e K7 Connect
25. oT SO 5351 STER E 2345678 90 11 23 K2 KI INFRARED b TE HB SENSOR BIN CONTROL HI PRESS CONTROL BOARD BR DBU SUM MECH BIN CONTROL wid SWITCH w o 49 C Performance Data 1 FD 1001MAH air cooled Awaiting Data Note We reserve the right to make changes in specifications and design without prior notice 50 2 FD 1001MAH C air cooled APPROXIMATE Ambient Water Temp F ICE PRODUCTION Temp CF 5 70 90 PER 24 HR 70 940 427 80 820 373 725 330 Ibs day kg day 640 292 APPROXIMATE ELECTRIC CONSUMPTION watts APPROXIMATE WATER CONSUMPTION PER 24 HR gal day l day EVAPORATOR OUTLET TEMP HEAD PRESSURE PSIG kg cm G SUCTION PRESSURE PSIG kg cm G TOTAL HEAT OF REJECTION 8800 BTU h AT 90 F WT 70 Note We reserve the right to make changes in specifications and design without prior notice 51 3 FD 1001MWH water cooled Awaiting Data Note We reserve the right in make changes to specifications and design without prior notice 52 4 FD 1001MWH C water cooled Awaiting Data Note We reserve the right to make changes in specifications and design without prior notice 53 5 FD 1001MRH remote air cooled Awaiting Data Note We reserve the right to make changes in specifications and design without prior notice 54 6 FD 1001MRH C remote air cooled APPROXIMATE ICE PRODUCTION Temp
26. panels in their correct positions 13 Turn on the power supply D Removal and Replacement of Evaporator Assembly Components CAUTION On flaker models make sure the cutter pin is in place after service On cubelet models make sure the extruding head heater is installed after service Cutter Bolt and Washer Extruding Head Heater C models only i Extruding Head Cutter Pin 2 Flaker models only Auger Allen Head Cap Screw 5 ke Evaporator Head Cap Screw Spring Retainer amp Washer Mechanical Seal Gear Motor Fig 11 1 Upper Bearing Wear Check To ensure that the bearing inside the extruding head does not exceed the wear tolerance of 02 follow the instructions below 1 Turn off the power supply 2 Remove the panels 4 Remove the bolt from the auger and lift off the cutter 02 Round Stock or Pin Gauge 3 Remove the strap connecting the spout to the chute assembly then remove the spout 5 Replace the bolt in the auger Grasp the bolt at the top of the auger and move the auger towards you and then try to insert a 02 round stock or pin gauge in between the back side of the auger 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
27. the new control board Replace the control box cover and front panel in their correct positions 95 VI Cleaning and Maintenance WARNING CHOKING HAZARD Ensure all components fasteners and thumbscrews are securely in place after any cleaning or maintenance is done to the unit Make sure that none have fallen into the dispenser unit storage bin A Cleaning and Sanitizing Instructions Hoshizaki recommends cleaning and sanitizing this icemaker at least twice a year More frequent cleaning and sanitizing however may be required in some existing water conditions 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 sanitizing 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 recommended cleaner Hoshizaki Scale Away or LIME A WAY Economics Laboratory Inc with 1 6 gal 6 0 I of warm water 2 Cleaning Procedure 1 Turn off the power su
28. 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 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 Move the control switch to the ICE position then move the power switch to the ON position Replace the panels in their correct positions then turn on the power supply Make ice using the solution until the icemaker stops making ice 13 Turn off the power supply then remove the front panel Move the control switch to the DRAIN position then replace the front panel in its correct position 14 Turn on the power supply
29. to the ON position 4 Turn on the power supply to start the automatic icemaking process Strap A sor Proximity Switch Actuator Paddle 7 7 Assembly Fig 8 67 5 Make sure the GM LED is on There is a delay of at least 30 seconds before the GM LED turns on after power up After the GM LED turns on press the SERVICE button on the control board to bypass the 5 minute compressor delay WARNING Risk of electric shock Care should be taken not to touch live terminals The COMP LED turns on 6 Press the actuator paddle located in the top of the chute S1 dip switch 7 in the ON position The compressor and gear motor should de energize within 10 seconds and the control board should sound a 9 beep alarm S1 dip switch 7 in the OFF position The compressor and gear motor should de energize within 10 seconds Diagnosis If the mechanical bin control fails to open or the icemaker fails to shut down check that the actuator paddle is moving freely Confirm that the actuator paddle is engaged Check for continuity across the mechanical bin control wires If the mechanical bin control is found open and the icemaker continues to run the control board is bad and must be replaced If the mechanical bin control is found closed with the actuator paddle engaged the mechanical bin control proximity switch is bad and must be replaced 7 Move the power switch to the OFF position and turn off th
30. unit storage bin Clean the dispenser unit storage bin liner using a neutral cleaner Rinse thoroughly after cleaning 102 3 water cooled model only first remove the water from the water cooled condenser 1 Make sure the power supply is off then remove the front and right side panels 2 Close the condenser water supply line shut off valve If connected to a closed loop system also close the condenser return line shut off valve 3 Open the condenser water supply line drain valve If connected to a closed loop system also open the condenser return line drain valve 4 Attach a compressed air or carbon dioxide supply to the condenser water supply line drain valve 5 Open the water regulating valve by using a screwdriver to pry up on the spring retainer underneath the spring While holding the valve open blow out the condenser using the compressed air or carbon dioxide supply until water stops coming out 6 Close the drain valve s 7 Replace the right side panel and front panel in their correct positions 103
31. upper float and black BK to blue DBU for the lower float They should be closed Clean or replace if necessary 2 Float Switch Cleaning Depending on local water conditions scale may build up on the float switch Scale on the switch can cause the floats to stick In this case the float switch should be cleaned and checked 1 Turn off the power supply 2 Remove the float switch assembly from the reservoir cover See Fig 10 3 Wipe down the float switch assembly with a mixture of 1 part recommended cleaner Hoshizaki Scale Away or LIME A WAY Economics Laboratory Inc 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 The floats must be installed with the magnets inside them towards the top of the switch Installing the floats upside down will affect the timing of the float switch operation See Fig 9 5 Rinse the float switch assembly thoroughly with clean water and replace in its original position 69 Red R upper float switch Black BK PT common Dark Blue DBU lower float switch Magnet towards top Upper Float blue Spring Retainer Clip Magnet towards top Lower Float white Plastic Retainer Clip Float Switch Assembly Reservoir Cover gt b Fig 10 70 Diagnostic Charts 1 No Ic
32. 0 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 See Fig 15 Otherwise continue to step 12 a Remove the float switch assembly from the reservoir cover b Wipe down the float switch assembly with the cleaning solution c Rinse the float switch assembly thoroughly with clean water d Replace the float switch assembly in its correct position Float Switch Assembly Reservoir Cover Reservoir Fig 15 97 11 Wipe down the infrared sensor s lens located on the bottom of the icemaker with the cleaning solution See Fig 16 Next rinse the cleaning solution off of the infrared sensor s lens with a clean damp cloth Infrared Sensor A Infrared Sensor pr Pene Fig 16 Lens 12 Move the control switch to the ICE position then move the power switch to the ON position Replace the panels in their correct positions Turn on the power supply and make ice using the solution until the icemaker stops making ice 13 Turn off the power supply then remove the front panel Move the control switch to the DRAIN position then replace the front panel in its correct position 14 Turn on the power supply and allow the solution to drain for 5 minutes 15 Turn off the power supply then remove the front panel Move the control switch to the ICE position then replace the
33. ANT CHARGE DESIGN PRESSURE OPERATING CONDITIONS ACCESSORIES SUPPLIED 115 60 1 Connection to Icemaker 115V Total 1 3FLA 65W 21 15 16 15 11 16 x 17 7 8 557 x 398 x 454 mm 24 x 18 1 8 x 32 13 16 610 x 460 x 834 mm Galvanized Steel Net 61 Ibs 28 kg Shipping 68 Ibs 31 kg Permanent Connection Discharge Line 1 1 16 12 UNF Fitting 10 AEROQUIP Liquid Line 5 8 18 UNF Fitting 6 AEROQUIP Air cooled Fin and tube type Thermal Protection Condensing Pressure Regulator R 404A 11 14 oz 850g High 467 PSIG VOLTAGE RANGE 104 127V AMBIENT TEMP 20 122 F Leg 2 pcs Hex Head Bolt w Washer 8 x 16 8 pcs Hex Nut 8 8 pcs Note We reserve the right to make changes in specifications and design without prior notice 16 b Dimensions 24 610 mm 23 1 32 585 mm 3 19 11 16 6 16 3 4 10 20 4 2 SLOTTED HOLES 3 ut al we 2E BE Se xE 1 1 1 TO WE 8 n9 i5 ig 38 48 18 1 8 460 20 15 32 520 21 15 16 co N N 7 8 DIA HOLE 23 mm DIA s ET 1o 1 1 4 l ER E E NI ME al M 2 15 16 75 m NN E NV es 17 General Information A Construction 1 FD 1001MAH C air cooled Mechanical Bi trol Inlet Water Valve echanical Bin Contro Spout Contro
34. ARD 1 SERVICE BUTTON S2 DIP SWITCH NEUT W GND GR 208 230 60 1 3 WIRE WITH NEUTRAL FOR 115 X1 COMPRESSOR RELAY 2 POWER SWITCH oo WIRE COLOR CODE BED 8 BK BLACK BROWN START 7 7 ONLY BR CR T CRANKCASE R sj COMP Y GRAY PINK 2 VIOLET WHITE 4 LBU LIGHT BLUE DBY DARK BLUE W BU WHITE BLUE 78 W BK WHITE BLACK 1 8 PROT EGT W BR WHITE BROWN it BR GEAR MOTOR wo WHITE ORANGE R PROTECT RELAY AIR COOLED ONLY REMOTE ONLY BK BR FUSE 34 D o FAN MOTOR FAN MOTOR THERMAL eae PROTECTOR EVAP HEATER BK CONTROL TRANSFORMER CUBELET C ONLY CONTROL SWITCH 5502 3 s W BK W BK HI PRESS SWITCH INFRARED SENSOR BIN CONTROL BR DBU MECH BIN FLOAT CONTROL SWITCH 47 h Low Water Safety During fill or refill Should the upper float switch fail to clos
35. BLACK BROWN ORANGE REMOTE ONLY CAPIT z R 108 130MFD BK YELLOW CRANKCASE HEATER P m Bo Zr E a 5 VIOLET WHITE gt LBU d DBY DARKBLUE 6 W BU WHITE BLUE W R WHITE RED W BK WHITE BLACK E W BR WHITE BROWN CIRCUIT PROTEGT W O WHITE ORANGE 7 BR GEAR MOTOR PROTECT RELAY AIR COOLED ONLY REMOTE ONLY BK m BR CP CP 3 FAN MOTOR FAN MOTOR THERMAL PROTECTOR EVAP HEATER CONTROL TRANSFORMER BK CUBELET C ONLY CONTROL roo a oo oe ee SWITCH gt it 2345678910 112 3 oF W BK INFRARED MECH BIN FLOAT CONTROL Wid SWITCH 46 9 Mechanical Control Shutdown Ice fills the chute to the point of engaging the mechanical bin control Dip Switch 7 ON The icemaker shuts down within 10 seconds of the mechanical bin control opening and a 9 beep alarm sounds Dip Switch 7 OFF Hoshizaki ice storage bin applications only The icemaker shuts down within 10 seconds of the mechanical bin control opening CONTROL BO
36. Hoshizaki America Inc Modular Flaker Models FD 100I MAH C FD 100I MWH C FD 100I MRH C FD 1001I MLH C SERVICE MANUAL A Superior Degree of Reliability www hoshizaki com Number 73159 Issued 2 12 2010 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 with this manual may adversely affect safety performance component life and warranty 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 which 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 Attn 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 e Model Number Serial Number Complete and detailed explanation of the problem This man
37. IN position Move the power switch to the ON position and allow the water to drain from the evaporator d Move the power switch to the OFF position 2 Turn off the power supply 4 5 Remove the allen head cap screws securing the extruding head Using the cutter lift out the auger assembly 3 Remove the panels Remove the strap connecting the spout to the chute assembly then remove the spout 6 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 7 Remove the allen head cap screws securing the evaporator to the lower bearing housing 8 Raise the evaporator up to access the lower housing 9 Remove the O ring and mechanical seal from the housing If only replacing the mechanical seal proceed to step 12 WARNING To help prevent water leaks be careful not to damage the surfaces of the O ring or mechanical seal 85 6b Lower Housing 10 Remove the bolts securing the housing to the gear motor and remove the housing from the gear motor If inspection of the upper bearing inside the extruding head see V D 1 Upper Bearing Wear Check indicates that it is out of tolerance replace both it and the bearing inside the lower housing Note Replacing the bearing requires a bearing press adaptor I
38. M GMPR and FM FMR de energize 10 minute DT begins DV energizes After 10 minute DT terminates 12 hour drain cycle timer starts 23 3 Manual Drain Manual 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 Comp LLV and SLV on MLH models de energize and the 5 minute ice purge timer begins When the 5 minute ice purge timer terminates GMR X2 on CB GM GMPR and FM FMR de energize DV energizes to drain the evaporator and reservoir To avoid the 5 minute shutdown delay turn off the power supply then move the control switch to the DRAIN position Turn on the power supply DV energizes to drain the evaporator and reservoir DV de energizes when the control switch is moved to the ICE position e Shutdown 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 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 S1 dip switch 1 2 amp 3 begins For a typical dispenser unit application a 100 second shutdown delay is recommended When used with a standard Hoshiza
39. N jem ONLY BR 08 130 0 T RUN GY GRAY CRANKCASE 91 CAR P PINK 4 PATER du 25 5 COMP 5 2 voer WHITE LIGHT BLUE 2 DARK BLUE lt WHITE BLUE 2 o WHITE RED Fle ep 5 6 WHITE BLACK 3o o WHITE BROWN 5 6 ip WHITE ORANGE CIRCUIT PROTECT 7 8 RELAY o ponto eee BR GEAR MOTOR PROTECT RELAY AIR COOLED ONLY REMOTE ONLY w BK BR 5MFD dH BR C 24MFD FUSE WD P P 3A OM O a 9 FAN MOTOR FAN MOTOR T2 THERMAL GEAR rn PROTECTOR e e e EVAP LAA HEATER ak CONTROL TRANSFORMER e BK CY Y S 24V CUBELET C ONLY FUSE R CIA LBU 4 CONTROL SWITCH 5 INFRARED SENSOR BIN rw CONTROL HUE HI PRESS 12 SWITCH 13 er Y BR 140 Y p 118176 1 21 5 e W O DBU 62T W70 BK T DBU 1 p GY _ AUG MECH BIN CONTROL n SWITCH
40. Y MINIMUM CIRCUIT AMPACITY APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE QUALITY APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W kWH 100 lbs POTABLE WATER gal 24HR gal 100 Ibs EXTERIOR DIMENSIONS WxDxH 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 COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE P C BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION GEAR MOTOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS 208 230 60 1 3 wire with neutral for 115V 240 V 4 2 RLA 34 LRA 120 V 3 FLA 1 4 HP 115 3A MAX 120 V 0 03A 15A 15A 15A 15A Ambient WATER TEMP F Temp F 5 70 90 70 930 423 895 406 860 390 80 825 375 790 360 760 345 90 730 332 720 326 670 306 100 645 294 620 282 580 263 Cubelet Approx 8096 Ice 90 70 F Conductivity 200 us cm N A 90 70 70 50 F 1449 4 8 1401 3 6 86 12 112 12 22 x 24 x 25 15 16 560 x 610 x 658mm Stainless Steel Galvanized Steel Rear Net 176 Ibs 80 kg Shipping 205 Ibs 93 Perma
41. a 90 second shutdown cycle starts Comp de energizes and CB signals a 1 beep alarm every 5 seconds 90 second purge timer starts GMR GM GMPR and FM FMR continue to clear ice from the evaporator 90 second purge timer terminates GMR GM GMPR and FM FMR de energize WV and 1 beep alarm continue until UF S closes Diagnosis Check that WTRIN LED is on If not check LF S See IV E Float Switch Check and Cleaning If LF S is open and WTRIN LED is off CB is bad and must be replaced If WTRIN LED is on check that the reservoir fills If not check the water supply line clogged water filters WV solenoid clogged WV screen If WV is energized and refill exceeds 90 second low water safety timer fill timer check DV leaking by UF S open 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 Il 3 Freeze Timer 5 alarm 60 10 Shutdown IV D Control Check Legend CB control board Comp compressor DV drain valve EHH extruding head heater C model only FM fan motor FMR fan motor remote GM gear motor GMPR gear motor protect relay GMR gear motor relay IS infrared sensor LF S lower float switch LLV liquid line valve model only MBC mechanical bin c
42. agnosis If WTRIN LED is off upper float switch is closed reservoir full GM LED is on and the gear motor energizes skip to step 8 If WTRIN and GM LED are off confirm that the control switch is in the ICE position open Check that the yellow LED on the infrared sensor is not steady or flashing see step 4 below Next check the continuity of the lower and upper float switches open or closed For further details see 5 1 below If the lower or upper float switch is open and the WTRIN LED is off the control board is bad and must be replaced If the WTRIN LED is on and the lower or upper float switch is open water should be filling the reservoir If not skip to step 6 61 4 Infrared Sensor connector Check that the infrared sensor green LED is If not check for 20VDC from the black K6 connector dark blue wire DBU to the K6 connector brown BR wire See Fig 4 If 20VDC is not present the control board is bad and must be replaced Next confirm that the yellow LED is not flashing or steady If IS yellow LED is on or flashing move ice away from IS lens If no ice is present clean the lens with a warm clean damp cloth If cleaning the lens does not work replace IS Infrared Sensor 20VDC Closed 20VDC DBU to BR 20VDC DBU to W OVDC W to BR Infrared Sensor 20VDC Open yellow LED flashing or steady 20VDC DBU to BR OVDC DBU to W 20VDC W to BR Brown BR White W Dark Blue DBU
43. ain to reset the alarm For further details see IV D Bin Control Check 4 Controls and Adjustments 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 DipSwitchNo 1 2 3 4 5 6 7 8 9 10 Normally off factory use Mechanical 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 31 b Infrared Sensor Shutdown Delay S1 dip switch 1 2 amp 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 dispense method Increasing the shutdown delay setting allows for a higher level of ice in the bin before the icemaker shuts down For a typical dispenser unit application a 100 second shutdown delay is recommended When used with a standard Hoshizaki storage bin any shutdown delay setting is acceptable WARNING Increasing the shutdown delay allows a higher level of ice in the dispensing u
44. and allow the solution to drain for 5 minutes 15 Turn off the power supply 5 Sanitizing Procedure Final 1 Mix a new batch of the sanitizing solution 2 Make sure the power supply is off and the water supply line shut off valve is closed Remove the front and top panels then move the power switch to the OFF position 3 Remove the strap connecting the spout to the chute assembly then remove the spout 4 Pour the sanitizing solution over the extruding head until the evaporator assembly and the reservoir are full and the solution starts to overflow into the drain pan 5 Replace the spout and strap in their correct positions 6 Allow the icemaker to sit for about 10 minutes before operation 7 Move the control switch to the ICE position then move the power switch to the ON 99 position Replace the panels in their correct positions then turn on the power supply Make ice using the solution until the icemaker stops making ice 8 Turn off the power supply then remove the front panel Move the control switch to the DRAIN position then replace the front panel in its correct position 9 Turn on the power supply and allow the solution to drain for 5 minutes 10 Turn off the power supply then 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 then turn on the power supply to supply water to the re
45. and the upper float switch is closed the control board sounds a 5 beep alarm every 5 seconds Both alarms require a manual reset For further details see Il C 3 d Feeze Timer 5 beep alarm d Drain Frequency 1 t in 1 Drain Cycle The 1 hour drain timer terminates then the drain valve energizes for 2 seconds This occurs once every hour when the 1 in 1 drain cycle is activated S1 dip switch 4 in the OFF position factory default This setting is recommended for optimum icemaker performance The 1 in 1 drain cycle allows for maximum drainage of any sediment from the evaporator without interrupting the icemaking process 2 1 in 12 Drain Cycle optional The 12 hour drain timer terminates then the icemaker cycles down and the drain valve energizes for 10 minutes This occurs once every 12 hours when the 1 in 12 drain cycle is activated S1 dip switch 4 in the ON position optional For further details see II B 1 d Drain Cycle e Bin Control Shutdown Delay 1 Infrared Sensor The ice level at shutoff may need to be adjusted depending on the dispenser agitation or dispense method For a typical dispenser unit application a 100 second shutdown delay is recommended Increasing the shutdown delay setting allows for a higher level of ice in the bin before the icemaker shuts down When used with a standard Hoshizaki storage bin any shutdown delay setting is acceptable For further details see II C 4 b Infrared Sensor Shutdo
46. as a mixture with pressurized air for leak testing 11 Evacuate the system and charge it with refrigerant See the nameplate for the required refrigerant charge 12 Replace the panels in their correct positions 13 Turn on the power supply 87 Removal and Replacement of Water Cooled Condenser CAUTION Always install a new drier every time the sealed refrigeration system is opened Do not replace the drier until after all other repair or replacement has been made Install the new drier with the arrow on the drier in the direction of the refrigerant flow When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 1 Turn off the power supply 2 Remove the panels 3 Close the condenser water supply line shut off valve If connected to a closed loop water supply also close the condenser return outlet shut off valve 4 Open the condenser water supply line drain valve If connected to a closed loop water supply also open the condenser return outlet drain valve 5 Attach a compressed air or carbon dioxide supply to the condenser water supply line drain valve 6 Open the water regulating valve by using a screwdriver to pry up on the spring retainer underneath the spring While holding the valve open blow out the condenser using the compressed air or carbon dioxide supply until water stops coming out 7 Recover the refrigera
47. bout the use and care of the unit 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 eventual damage caused by improper incorrect and unreasonable use To reduce the risk of death electric shock serious injury or fire follow basic precautions including the following 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 injury fire or severe damage to equipment This unit requires an independent power supply See the nameplate for proper voltage and breaker fuse size Failure to use a proper 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 Failure to properly ground this unit could result in death or serious injury This unit should be disassembled or repaired only by qualified service personnel to reduce the risk of electric shock injury or fire Do not make any alterations to the unit Alterations could result in electric shock injury fire or damage to the unit Specifications Icemaker 1 1001 air cooled Awaiting Data Note We reserve the right to make changes
48. brazing protect the valve body and drier by using wet cloths to prevent the valve body and drier from overheating Do not allow the valve body or drier to exceed 250 121 C 1 Turn off the power supply 2 Remove the panels 3 Recover the refrigerant and store it in an approved container 4 Remove the insulation and the expansion valve bulb on the suction line 5 Remove the expansion valve cover and disconnect the expansion valve Place the new expansion valve in position 6 Remove the drier then place the new drier in position 7 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG 80 8 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 404 as a mixture with pressurized air for leak testing 9 Evacuate the system and charge it with refrigerant For air cooled and water cooled models see the nameplate for the required refrigerant charge For remote air cooled model see the rating label inside the icemaker 10 Attach the expansion valve bulb to the suction line in the same location as the previous bulb The bulb should be between the 10 and 2 o clock position on the tube Be sure to secure the bulb with the clamp and holder and to insulate it 11 Place the expansion valve cover in position 12 Replace the
49. d then raise the pressure using nitrogen gas 140 PSIG DO NOT use R 404A as a mixture with pressurized air for leak testing 9 Evacuate and recharge the system See V A 4 Refrigerant Recovery Evacuation and Recharge MLH Model low side parallel rack system or the rack system manufacturer s instructions 10 Replace the panels in their correct positions 11 Turn on the power supply M Removal and Replacement of Water Valves 1 Inlet Water Valve 1 Turn off the power supply 2 3 4 5 Remove the panels Close the water supply line shut off valve Open the water supply line drain valve Nu Disconnect the terminals from the inlet water valve 93 6 Loosen the fitting nut on the inlet water valve and remove the inlet water valve Do not lose the packing inside the fitting nut 7 Remove the water supply hose from the inlet water valve 8 Install the new inlet water valve 9 Replace the removed parts in the reverse order of which they were removed 10 Close the water supply line drain valve 11 Open the water supply line shut off valve 12 13 Replace the panels in their correct positions Check for water leaks 14 Turn on the power supply 2 Drain Valve 1 Turn off the power supply 2 Remove the panels and close the water supply line shut off valve 3 Remove the clamp and disconnect the drain water valve Note Water may still remain inside the evaporator Be sure t
50. e Production Possible Cause 1 The icemaker will not a Power Supply 1 Off blown fuse or 1 Turn on replace or reset tripped breaker 2 Tighten 3 Bad contacts 3 Check for continuity and replace 4 Not within 4 Refer to nameplate and specifications correct b Water Supply 1 Water supply off or 1 Check and get pressure too low recommended pressure c Power Switch 1 OFF position 1 Move to ON position Control Box 2 Bad contacts 2 Check for continuity and replace d Circuit Protect Relay 1 Power supply not 1 Refer to nameplate and within specifications correct or re wire 2 Bad Contacts 2 Check for continuity and replace 1 Coil winding opened 1 Replace f Fuse Control Box 1 Blown 1 Check for short circuit and replace 9 Infrared Sensor 1 No power or defective 1 See IV D Bin Control Check h Mechanical Bin 1 Tripped with bin filled 1 Remove ice Control Backup Bin with ice 9 beep Control Safety alarm 2 Mechanical bin control 2 See IV D Bin Control stuck open Check 3 Actuator paddle does 3 Clean shaft and its not move freely corresponding holes or replace damaged components i High Pressure Switch 1 Bad Contacts 1 Check for continuity and replace 2 Dirty air filter or 2 Clean condenser 3 Ambient or condenser 3 Reduce temperature water temperature too warm 4 Refrigerant 4 Recharge overcharged 5 Fan not operati
51. e power supply 8 Replace the chute assembly and strap in their correct positions 9 Move the power switch to the ON position 10 Replace the control box cover top panel and front panel in their correct positions 11 Turn on the power supply to start the automatic icemaking process 68 E Float Switch Check and Cleaning 1 Float Switch Check 1 Remove the front panel and move the power switch to the OFF position Move the control switch to the DRAIN position 2 Move the power switch to the ON position 3 Allow the water to drain from the reservoir then move the power switch to the OFF position and the control switch to the ICE position 4 Remove the molex plug from the control box and check continuity across the float switch wires Black BK to red R for the upper float and black BK to dark blue DBU for the lower float See Fig 9 With the water reservoir empty the float switches are open If open continue to step 5 If closed follow the steps in IV E 2 Float Switch Cleaning After cleaning the float switches check them again Replace if necessary 5 Replace the molex plug on the control box 6 Move the power switch to the ON position and let the water reservoir fill 7 Once the reservoir is full and the gear motor starts move the power switch to the OFF position 8 Remove the molex plug from the control box and check continuity across the float switch wires Black BK to red R for the
52. e within 90 seconds after the water valve energizes a 1 beep alarm sounds The water valve remains open until the upper float switch closes If this occurs during refill the icemaker cycles down CONTROL BOARD 1 SERVICE BUTTON S2 DIP SWITCH CONTROL X1 COMPRESSOR RELAY NEUT W GND GR 208 230 60 1 3 WIRE WITH NEUTRAL FOR 115 L2 BK WIRE COLOR CODE POWER SWITCH R START t REMOTE ONLY 108 130MFD BK RUN CRANKCASE 9 CAR COMP VIOLET WHITE U LIGHT BLUE 2 DBY DARKBLUE LA W BU WHITE BLUE 4 W R WHITE RED 6 W BK WHITE BLACK W BR WHITE BROWN WHITE ORANGE CIRCUIT PROTECT w RELAY GEAR MOTOR PROTECT RELAY AIR COOLED ONLY REMOTE ONLY BK 85 5MFD BR 1 FAN MOTOR MOTOR THERMAL PROTECTOR EVAP HEATER BK CONTROL TRANSFORMER CUBELET C ONLY CONTROL SWITCH 9 1 INFRARED W BK SENSOR BIN CONTROL HI PRESS SWITCH R DBU SET MECH BIN CONTROL W SWITCH
53. erminals 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 FM FMR remain energized CR X1 on CB and Comp energize LLV and SLV energize on MLH models 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 BC shuts down the icemaker or power is turned off to the unit d Drain Cycle 1 1 1 Drain Cycle DV energizes once every hour when the 1 in 1 drain cycle is activated 1 dip switch 4 is in the OFF position factory default position GMR X2 on CB GM GMPR FM FMR CR X1 on CB and Comp continue DV energizes for 2 seconds every hour This setting is recommended for optimum icemaker performance The 1 in 1 drain cycle allows any sediment to drain from the evaporator without interrupting the icemaking process 2 1 in 12 Drain Cycle optional DV energizes once every 12 hours when the 1 in 12 drain cycle is activated S1 dip switch 4 is in the on position optional 12 hour drain cycle timer terminates CR X1 on CB and Comp de energize LLV and SLV de energize on MLH model GMR X2 on CB GM GMPR and FM FMR continue The 5 minute ice purge timer begins When the 5 minute ice purge timer terminates GMR X2 on CB G
54. f one is not available replace the whole extruding head and housing 11 Mount the lower housing on the gear motor 12 Install the O ring and lower part of the mechanical seal on the lower housing 13 Lower the evaporator down and secure it to the lower housing 14 Install the auger assembly with the upper part of the mechanical seal attached 15 Replace the removed parts in the reverse order of which they were removed 16 Replace the panels in their correct positions 17 Move the drain switch to the ICE position Then turn on the power supply 7 Removal and Replacement of Gear Motor 1 Drain the water from the evaporator a Move the power switch to the OFF position b Move the control switch to the DRAIN position c Move the power switch to the ON position and allow the water to drain from the evaporator d Move the power switch to the OFF position 2 Turn off the power supply 4 5 Remove the bolts securing the lower housing to the gear motor Lift the evaporator up slightly 3 Remove the panels Remove the strap connecting the spout to the chute assembly then remove the spout 6 Remove the bolts securing the gear motor 7 Disconnect the gear motor wiring then remove the gear motor 8 Remove the gear motor bracket and spline coupling from the old gear motor and place on the new gear motor 9 Install the new gear motor and re connect the electrical wires 10 Replace the removed parts
55. f the bottom of the icemaker is not accessible in your application remove the thumbscrew securing the infrared sensor housing remove the housing from the base then cover the infrared sensor lens See Fig 7 The yellow LED on the infrared sensor 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 the infrared sensor shutdown delay timer starts See Infrared Sensor Shutdown Delay S1 dip switch 1 2 and 3 The compressor should de energize immediately after the shutdown delay timer expires Five minutes later the gear motor and fan motor should de energize Diagnosis If the yellow LED is not on after covering the lens the infrared sensor is bad and must be replaced If the unit remains on after the infrared sensor shutdown delay timer expires and the 5 minute ice purge timer expires the control board is bad and must be replaced If the infrared sensor fails to shut down the icemaker and the level of ice activates the mechanical bin control the icemaker shuts down within 10 seconds of the mechanical bin control opening and a 9 beep alarm sounds To reset turn the power off and then on again 66 9 Remove the object covering the infrared sensor If you removed the infrared sensor housing from the base replace it in its correct position and secure it with the thumbscrew 10 Move the power switch to the OFF po
56. frigerants 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 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 78 4 Close the low side valve high side valve on the gauge manifold 5 Disconnect the gauge manifold hose from the vacuum pump and attach it to a refrigerant service cylinder Remember to loosen the connection and purge the air from the hose Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard 700 latest edition be used 6 A liquid charge is recommended for charging an R 404A system Invert the service cylinder and place it on scales Open the high side valve on the gauge manifold 7 Allow the system to charge with liquid until a charge weight equal to the charge weight removed earlier in step 4 5 is met 8 Remove the magnets from the liquid and suction line valves 9 Close the gauge manifold valves 10 Open the rack system liquid and suction line service valves 11 Turn on the power supply 12 Allow the system to run then confirm the EPR evaporator pressure regulator setting EPR Setting 32 PSIG for evaporator temperature no less than 5 F 15 C 13 Disconnect the gauge manifold hoses 14 Cap the access valves to prevent a possible
57. g closed end connectors 12 13 14 15 Connect the new solenoid leads Attach the solenoid to the valve body and secure it with the screw Replace the panels in their correct positions was a fT Turn on the power supply 92 L Removal and Replacement of Evaporator Pressure Regulator E P R MLH Model low side parallel rack system 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 E P R and drier by using wet cloths to prevent the E P R and drier from overheating Do not allow the E P R or drier to exceed 250 F 121 C 1 Turn off the power supply 2 Remove the panels 3 Isolate the icemaker from the rack system See V A 4 Refrigerant Recovery Evacuation and Recharge MLH Model low side parallel rack system or the rack system manufacturer s instructions 4 Recover the refrigerant and store it in an approved container 5 Remove the E P R valve 6 Place the new E P R valve in position 7 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG 8 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 an
58. gas 140 PSIG DO NOT use 404 as a mixture with pressurized air for leak testing 15 Evacuate the system and charge it with refrigerant See the nameplate for the required refrigerant charge 16 Connect the flare connections 17 Close the condenser water supply line drain valve If connected to a closed loop water supply also close the condenser return outlet drain valve 89 18 Open the condenser water supply line shut off valve If connected to a closed loop water supply also open the condenser return outlet shut off valve 19 Check for water leaks 20 Replace the panels in their correct positions 21 Turn on the power supply H Adjustment of Water Regulating Valve Water Cooled Model The water regulating valve also called water regulator is factory adjusted No adjustment is required under normal use Adjust the water regulator if necessary using the following procedure 1 Prepare a thermometer to check the condenser outlet temperature Attach a pressure gauge to the high side line of the system Adjustment Screw 2 Five minutes after a freeze cycle starts confirm that the thermometer reads 104 F to 115 F 40 C to 46 C If it does not rotate the adjustment screw by using a flat blade screwdriver until the temperature is in the proper range See Fig 13 Next check that the reference pressure is in the range indicated in the Head Pressure table in the Performance Data section If it is not in the
59. harge weight is met 8 If necessary add any remaining charge to the system through the low side Use a throttling valve or liquid dispensing device to add the remaining liquid charge through the low side access port with the unit running 9 Close the gauge manifold valves and disconnect the gauge manifold hoses 10 Cap the access valves to prevent a possible leak 4 Refrigerant Recovery Evacuation and Recharge MLH Model low side parallel rack system a Refrigerant Recovery Using proper refrigerant practices close the liquid and suction line service valves at the rack system Then follow the steps below to recover the refrigerant from the line set and icemaker and store it in an approved container Do not discharge the refrigerant into the atmosphere 1 Turn off the icemaker power supply 2 Close the liquid and suction line service valves at the rack system 3 Connect gauge manifold hoses to the line set liquid and suction access valves 4 Place magnets on top of the liquid and suction line solenoids 5 Recover the refrigerant from the line set and icemaker Note the charge amount removed Do not discharge the refrigerant into the atmosphere b Brazing See V A 2 Brazing c Evacuation and Recharge 404 1 Attach a vacuum pump to the system Be sure to connect charging hoses to both liquid and suction access valves IMPORTANT The vacuum level and vacuum pump may be the same as those for current re
60. he lens with a warm clean damp cloth If cleaning the lens does not work replace IS When WTRIN LED turns on check that WV fills the reservoir If not 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 Check for water supply line shut off valve closed clogged water filters and clogged WV screen Check that DV is not leaking by Check that WV shuts off when UF S closes If not check UF S LF S CB and WV See IV E 1 Float Switch Check 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 59 7 Ice Purge Cycle GM LED is 30 second GM delay timer and 30 minute freeze timer start WV de energizes and WTRIN LED turns off Once the 30 second GM delay timer terminates the 5 minute ice purge timer starts GMR X2 on CB GM GMPR FM FMR and EHH C model only energize 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 43 black BK to white W neutral Check for 115VAC at CB K1 connector pin 42 brown BR to a white W neutral If no voltage is present CB is bad and must be replaced If 115VAC is present check GM fuse thermal protector and GM windings If FM FMR is on but GM is off check GM capacitor GM winding
61. he new compressor 9 Place the compressor in position and secure it using the bolts and washers 10 Place the new drier in position 11 Remove plugs from the suction discharge and process pipes 12 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG 13 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 404 as a mixture with pressurized air for leak testing 14 Evacuate the system and charge it with refrigerant For air cooled and water cooled models see the nameplate for the required refrigerant charge For remote air cooled models see the rating label inside the icemaker 15 Connect the terminals and replace the terminal cover in its correct position On remote air cooled models connect the crankcase heater 16 Replace the panels in their correct positions 17 Turn on the power supply C Removal and Replacement of Expansion Valve Moisture in the refrigeration circuit may exceed drier capacity and freeze up at the expansion valve 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
62. ice or maintain this icemaker 2 Disconnect power before performing maintenance 100 Maintenance Schedule Femeny aea Air Filter s Inspect Wash with warm water and neutral cleaner if dirty Weeks 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 Clean any chlorine staining rust Storage Bin colored spots using a non abrasive cleaner like Zud or Bon Ami Exterior Infrared Sensor Wipe down with clean cloth and warm water Lens Underside of 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 the water supply line shut off valve and drain the wa
63. in specifications and design without prior notice 2 FD 1001MAH C air cooled AC SUPPLY VOLTAGE COMPRESSOR GEAR MOTOR FAN MOTOR OTHER MAXIMUM FUSE SIZE MAX HACR BREAKER USA ONLY MAX CIRC BREAKER CANADA ONLY MINIMUM CIRCUIT AMPACITY APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE QUALITY APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W KWH 100 Ibs POTABLE WATER gal 24HR gal 100 Ibs EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN ICE MAKING SYSTEM HARVESTING SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM PRIMARY BIN CONTROL SYSTEM SECONDARY COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE P C BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION GEAR MOTOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS 208 230 60 1 3 wire with neutral for 115V 240 V 4 2 RLA 34 LRA 120 V 3 FLA 1 4 HP 115 V 0 85FLA 1 15 HP 120 V 0 03A 15A 15A 15A 15A Ambient WATER TEMP F Temp CE 5 70 2390 70 940 427 890 405 855 389 80 90 100 Cubelet Approx 80 Ice 90 70 F Conductivity 200 us cm N A 90 70 F 70 50 1390 4 8 1320 3 4 86 12 113 12 22 x 24 x 25 15 16 560 x 610 x 658 Stainles
64. in the reverse order of which they were removed 11 Replace the panels in their correct positions 12 Move the drain switch to the ICE position Then turn on the power supply 86 E Removal and Replacement of Air Cooled Condenser CAUTION Always install a new drier every time the sealed refrigeration system is opened Do not replace the drier until after all other repair or replacement has been made Install the new drier with the arrow on the drier in the direction of the refrigerant flow When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 1 Turn off the power supply Remove the panels 3 Recover the refrigerant and store it in an approved container A Disconnect the condenser inlet and outlet piping Remove the corner barrier from the condenser O Remove the screws securing the condenser assembly then remove the assembly N Install the new condenser then attach the corner barrier 2 Sa Ta aT ef Remove the drier then place the new drier in position 9 10 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG 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
65. it in an approved container Do not discharge the refrigerant into the atmosphere 76 2 Brazing 4 WARNING 1 R 4044 itself is not flammable at atmospheric pressure and temperatures up to 176 F 80 2 404 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 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 250 121 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 press
66. ki storage bin any shutdown delay setting is acceptable See II C 4 b Infrared Sensor Shutdown Delay S1 dip switch 1 2 amp 3 Once IS shutdown delay timer terminates CR X1 on CB and Comp LLV and SLV on MLH models de energize and the 5 minute ice purge timer begins When the 5 minute ice purge timer terminates GMR X2 on CB GM GMPR and FM FMR de energize See II D Bin Control Note If IS fails to shutdown the icemaker MBC opens CB shuts down the icemaker and a 9 beep alarm sounds 2 Mechanical Bin Control CB shuts down the entire unit within 10 seconds when MBC opens actuator paddle engaged and sounds a 9 beep alarm For further details see II C 4 f Mechanical Bin Control Shutdown Delay S1 dip switch 8 and Bin Control Legend BC bin control CB control board Comp compressor CR compressor relay DT drain timer DV drain valve FM fan motor FMR fan motor remote GM gear motor GMPR gear motor protect relay GMR gear motor relay IS infrared sensor LF S lower float switch LLV liquid line valve model MBC mechanical bin control SLV suction line valve MLH model UF S upper float switch WV inlet water valve 24 2 Sequence Flow Chart e oqe IIIJ by O a 9AD 72 LA zL ut L q31 SI uo q31 ueei S Joxeuio2 Auo
67. l Box Extruding Head gt lt Heater FD 1001MAH C Evaporator Fan Motor Expansion 4 Valve 8 Air Cooled Condenser Gear Motor Ice Chute Compressor Infrared Sensor 18 2 FD 1001MWH C water cooled Mechanical Bin Control Inlet Water Valve Control Box Spout Extruding Head Heater FD 1001MWH C Evaporator Y 65 LM ee JA Water Expansion Regulating Valve Valve Water Cooled Y Condenser Gear Motor Ice Chute Compressor Infrared Sensor 19 3 FD 1001MRH C remote air cooled Inlet Water Valve Mechanical Bin Control Spout gt Extruding Head Heater FD 1001MRH C ncn Valve Gear Motor Ice Chute Compressor Infrared Sensor 20 4 FD 1001MLH C low side parallel rack system Inlet Water Valve Mechanical Bin Control Control Box Spout Extruding Head bu Heater 2 uer N 4i m Line n Wp i Valve Evaporator SIL EM ba al j ut LAM o cpm Strainer Expansion a ee Valve
68. ll food zones in the icemaker and dispenser unit storage bin are clean after the unit is serviced For cleaning procedures see Cleaning and Maintenance A Ice Production Check To check production prepare a bucket or pan to catch the ice and a set of scales to weigh the ice After the icemaker has operated for 10 to 20 minutes catch the ice production for 10 minutes Weigh the ice to establish the batch weight Multiply the batch weight by 144 for the total production in 24 hours B Diagnostic Procedure This diagnostic procedure is a 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 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 3 Alarm Safeties Note FM FMR and EHH C model only energize when GM LED turns on On MLH model CB X1 Comp relay energizes LLV and SLV 1 2 3 4 Turn off the power supply Remove the front panel then move the power switch to the OFF position Remove the control box cover and access CB 2 arf
69. losed calling for ice 5VDC is present from the white K5 connector pin closest to red K4 connector to the K8 connector pin 3 and 4 gray GY wires If 5VDC is not present the control board is bad and must be replaced If 5VDC is present to pin 3 gray GY wire and not to pin 4 gray GY wire the mechanical bin control proximity switch is open See IV D 2 Mechanical Bin Control Check 63 e Float Switch K8 connector pins 5 black BK wire 6 red wire upper 7 dark blue DBU wire lower 5VDC is present from the white K5 connector pin closest to red K4 connector to the K8 connector 5 black BK wire If 5VDC is not present the control board is bad and must be replaced For further float switch diagnostics see IV E Float Switch Check and Cleaning 6 WTRIN LED is on and the inlet water valve is off Check that the water supply is on and that no water restrictions exist Next check for 24VAC from the K2 connector pin 7 white red W R wire to a light blue LBU wire If 24VAC is present check for 24VAC from the K2 connector pin 8 white brown wire to a light blue LBU wire If 24VAC is not present the control board is bad and must be replaced If 24VAC is present check for 24VAC directly across the inlet water valve solenoid If 24VAC is present turn off the power supply and check continuity across the inlet water valve solenoid If open replace the inlet water valve 7 GM LED is on and the gea
70. manual reset Before resetting contact your local Hoshizaki Service Representative Turn the power off and then on again to reset the alarm If the high pressure switch has reset the icemaker starts running again d Freeze Timer 5 beep alarm The control board starts a 30 minute freeze timer once the upper float switch closes As the water level drops in the reservoir the upper float switch opens Should the upper float switch fail to close again before the 30 minute freeze timer terminates the control board sounds a 5 beep alarm every 5 seconds This alarm requires a manual reset Turn the power off and then on again to reset the alarm The icemaker starts running Also when the lower float switch is open and the upper float switch is closed the control board sounds a 5 beep alarm every 5 seconds This alarm requires a manual reset Turn the power off and then on again to reset the alarm For further details see IV E Float Switch Check e Low Voltage 6 beep alarm The minimum allowable power supply voltage of this icemaker is limited by the low voltage cut out When low voltage 92Vac 5 or less is present the POWER OK LED turns off and the control board shuts down the unit and sounds a 6 beep alarm every 5 seconds When the proper supply voltage resumes the icemaker automatically starts running again 30 f High Voltage 7 beep alarm The maximum allowable supply voltage for this icemaker is limited by the high voltage cut
71. may be used as a stand alone bin control when the unit is placed on a standard Hoshizaki ice storage bin 51 dip switch 7 in the off position WARNING Do not place S1 dip switch 7 in the off position on dispenser unit applications Proximity Switch Infrared Sensor 7 Infrared Sensor LED VN Connector 20V DC jun from K6 connector on TE CAD control board po d vi Actuator Infrared Sensor LED Paddle __ Infrared Sensor Infrared Sensor ane Ice Chute ae Infrared Sensor _ Housing 2 2 Fig 1 Fig 2 E Float Switch A dual float switch is used to determine that there is sufficient water in the reservoir during fill and refill The control board monitors the upper float switch to de energize the inlet water valve when the upper float switch closes during fill and refill The control board monitors the lower float switch to energize the inlet water valve when the lower float switch opens during the freeze cycle refill See Fig 3 The control board monitors the time between the lower float switch opening and the upper float switch closing 90 second low water safety The control board also monitors the time between the upper float switch closing and the lower float switch opening 30 minute freeze timer No adjustment is required For a float switch check procedure see IV E 1 Float Switch Check Red iin ien switch Black Dark Blue DBU lower float switch Upper Float S
72. mer starts gear motor fan motor fan motor remote energize Note The 30 second gear motor delay is active when S1 dip switch 7 is in the on position Otherwise gear motor has a 5 second delay when upper float switch closes CONTROL BOARD S1 SERVICE BUTTON NEUT W GND GR 208 230 60 1 3 WIRE WITH NEUTRAL FOR 115 LI BR L2 BK R RED BK BLACK BR Y YELLOW REMOTE ONLY BR ad R GR GREEN RUN ie GY GRAY CET P LA COMP LBU LIGHT BLUE LL DBY j b lil 4 W BU A 9 5 6 WR WHITE RED 3 e B W BK WHITE BLACK 5 6 1 me W BR WHITE BROWN al 18 Du GEAR MOTOR 2R PROTECT RELAY AIR COOLED ONLY REMOTE ONLY BR NT e FUSE 5 3A MOTOR HEATER BK CUBELET C ONLY CONTROL INFRARED SENSOR BIN CONTROL SWITCH W BK W BK rod 55 12 SWITCH FLOAT SWITCH 42 MECH BIN CONTROL c Freeze Cycle 5 minute ice purge timer terminates compressor energizes liquid line valve and suction line valve on MLH models CONTROL BOARD 1 SERVICE BUTTON
73. nent Connection Inlet 1 2 FPT Outlet 3 4 Discharge line 1 1 16 12 UNF Fitting 10 AEROQUIP Liquid line 5 8 18 UNF Fitting 6 AEROQUIP Auger type Direct Driven Auger 1 4 HP Gear Motor Float Switch N A Photoelectric Sensor Mechanical Bin Control Proximity Sw Hermetic Model RS70 C1E PFV Air cooled Remote Condenser unit URC 5F Recommended Copper Tube on Cylinder Thermostatic Expansion Valve Condensing Pressure Regulator on URC 5F R 404A 416 102 1850g Ice Maker 2 Ib oz Cond Unit 1 Ib 14 oz High 427 PSIG Low 230 PSIG High Voltage Cut off Relay Internal Protector Fuse 3A Auto reset High Pressure Control Switch Float Switch and Timer Spare Fuse Ice Storage Bin VOLTAGE RANGE 187 253 V AMBIENT TEMP 45 100 WATER SUPPLY TEMP 45 90 WATER SUPPLY PRESSURE 10 113 PSIG 13 7 FD 1001MLH low side parallel rack system Awaiting Data Note We reserve the right to make changes in specifications and design without prior notice 14 8 FD 1001MLH C low side parallel rack system Awaiting Data Note We reserve the right to make changes in specifications and design without prior notice 15 B Condenser Unit 1 URC 5F a Specifications AC SUPPLY VOLTAGE FAN MOTOR EXTERIOR DIMENSIONS WxDxH DIMENSIONS INCLUDING LEGS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC REFRIGERANT CONDENSER FAN MOTOR PROTECTION REFRIGERANT CONTROL REFRIGER
74. ng protect WRV and drier by using wet cloths to prevent the WRV and drier from overheating Do not allow the WRV or drier to exceed 250 121 1 Turn off the power supply 2 Remove the panels 3 Close the condenser water supply line shut off valve If connected to a closed loop water supply also close the condenser return outlet shut off valve 4 Open the condenser water supply line drain valve If connected to a closed loop water supply also open the condenser return outlet drain valve 5 Attach a compressed air or carbon dioxide supply to the condenser water supply line drain valve 6 Open the water regulating valve by using a screwdriver to pry up on the spring retainer underneath the spring While holding the valve open blow out the condenser using the compressed air or carbon dioxide supply until water stops coming out 7 Recover the refrigerant and store it in an approved container 8 Disconnect the capillary tube at the condenser outlet 9 Disconnect the flare connections of the valve 10 Remove the screws and the valve from the bracket 11 Install the new valve 12 Remove the drier then place the new drier in position 13 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG 14 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
75. ng 5 See chart 3 2 a Fan except water cooled Motor model 6 Refrigerant line or 6 Remove the restriction or component restricted component and replace the drier 71 Possible Cause 1 The icemaker will not i High Pressure Switch 7 Condenser water 7 Check and get start continued continued pressure too low or off recommended pressure water cooled model 8 Water regulating 8 Adjust it lower valve set too high water cooled model j Control Switch 1 DRAIN position 1 Move to ICE position 2 Bad contacts 2 Check for continuity and replace k Inlet Water Valve 1 Coil winding opened 1 Replace Control Board 1 Defective 1 IV B Diagnostic Procedure 2 Fill cycle will not a Float Switch 1 Bad contacts 1 Check for continuity and terminate replace 2 Float does not move 2 Clean or replace freely b Drain Water Valve 1 Valve seat clogged 1 Clean or replace and water leaking Hoses 1 Disconnected 1 Connect d Control Board 1 Defective 1 IV B Diagnostic Procedure 3 Ice purge cycle will Control Board 1 Defective 1 See IV B Diagnostic not start Procedure b Gear Motor Fuse 1 Blown 1 Check gear motor amperage bearing wear see V D 1 Upper Bearing Wear Check supply voltage Gear Motor Thermal 1 Open 1 Check gear motor bearings Protector voltage supply d Gear Motor Protect 1 Open windings 1 Re
76. nit storage bin before shutdown This could lead to icemaker movement or ice overflow S1 Dip Switch Settin ETENETEXEUEX Infrared Sensor Shutdown Delay ON OFF OFF 100 Seconds 1 6 minutes Factory Default 1100 Seconds 18 3 minutes c Drain Frequency Control S1 dip switch 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 available S1 Dip Switch Settin Drain Timer Interval Drain Valve Open OFF 1 in 1 ON 1 in 12 11 Hours 45 Minutes d Continuous Dispensing Timer S1 dip switch 5 amp 6 DCM models only The dispense mode switch on DCMs must be in the CONTINUOUS position for this setting to apply The factory setting allows ice to be dispensed continuously as long as the dispense solenoid is activated 1 Dip Switch Setting Dispense Time O O 60 Seconds Nes N N e Control Selector S1 dip switch 7 This unit is factory set for infrared sensor bin control operation No adjustment is required When used on a standard ice storage bin the mechanical bin control may be used instead of the infrared sensor by moving S1 dip switch 7 to the off position In the factory default position S1 dip switch 7 in the on position the gear motor delay after the upper float switch cl
77. nt Lines WARNING Repairs requiring the refrigeration circuit to be opened must be performed by properly trained and EPA certified service personnel Always recover the refrigerant and store it in an approved container Do not discharge the refrigerant into the atmosphere Use an electronic leak detector or soap bubbles to check for leaks Add a trace of refrigerant to the system if using an electronic leak detector and then raise the pressure using nitrogen gas 140 PSIG DO NOT use R 404A as a mixture with 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 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 time the sealed refrigeration system is opened Do not replace the drier until after all other repair or replacement has been made Install the new drier with the arrow on the drier in the direction of the refrigerant flow When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 1 Refrigerant Recovery except MLH model The icemaker unit is provided with refrigerant access valves Using proper refrigerant practices recover the refrigerant from the access valves and store
78. nt and store it in an approved container 8 Disconnect the condenser water inlet and outlet piping and the refrigeration inlet and outlet piping at the condenser 9 Remove the old condenser and install the new condenser Remove the drier then place the new drier in position 10 11 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG 12 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 13 Evacuate the system and charge it with refrigerant See the nameplate for the required refrigerant charge 14 Close the drain valve s Open the condenser water supply line shut off valve If connected to a closed loop water supply also open the condenser return outlet shut off valve 15 Check for water leaks 16 Replace the panels in their correct positions 17 Tum on the power supply 88 Removal and Replacement of Water Regulating Valve Water Cooled Model 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 brazi
79. nuous Dispensing Timer S1 dip switch 5 amp 6 32 Bin Control Selector S1 dip switch 7 33 f Mechanical Bin Control Shutdown Delay S1 dip switch 8 33 g Factory Use S1 Dip Switch 9 Ee Rr RR OR pae RE 33 D BMC OO E R EE E 34 E Float SWIIBD E AEE E E EEE AE 34 IM 35 A Water Circuit and Refrigeration Circuit 35 1 FD 1001MAH C 3lF COO BEL 35 2 FD 1001MWH C water cooled 36 3 FD 1001MRH C remote lt 27 4 FD 1001MLH C low side parallel rack system 38 B Wining c RR 39 1 FD 1001MAH C FD 1001MWH C 1001 39 2 FDA OO GC 40 SOQUENCE Wiring 41 a A9 41 D lce Purge en ae ed et Pree 42 c Freeze Oy
80. o drain the water into the drain pan 4 Disconnect the terminals from the drain water valve 5 Remove the drain water valve from the bracket 6 7 Connect the drain pipe to the new drain water valve and place the new drain water valve in position Remove the drain pipe from the drain water valve 8 Connect the hose to the drain water valve and secure it with the clamp 9 Pour water into the reservoir and check for water leaks 10 Open the water supply line shut off valve 11 Turn on the power supply 12 Move the control switch to the ICE position 13 Check for water leaks Turn on the power supply Make sure water is draining Turn off the power supply then move the control switch to the ICE position 14 Turn off the power supply then move the control switch to the DRAIN position Turn on the power supply 15 16 17 18 Replace the panels their correct positions 94 Removal and Replacement of Control Board 1 Turn off the power supply 2 Remove the front panel and the control box cover 3 Disconnect the control board connectors from the control board 4 Remove the control board 5 Adjust the dip switches on the new control board to the factory default settings See Il C 4 a Default Dip Switch Settings 6 Install the new control board taking care not to damage it 8 9 Turn on the power supply 7 Connect the control board connectors to
81. ontrol SLV suction line valve MLH model only UF S upper float switch WV inlet water valve C Control Board Check Before replacing a control board that does not show a visible defect and that you suspect is bad always conduct the following check procedure This procedure will help you verify your diagnosis 1 Check the S1 dip switch settings to assure that they are in the factory default position 1 dip switch 7 is determined by bin control application Bin Control Application Infrared Sensor Bin Control S1 dip switch 7 in the OFF position Mechanical Bin Control S1 dip switch 7 in the ON position For factory default settings see II C 4 a Default Dip Switch Settings 2 Move the power switch to the ON position and move the control switch to the ICE position The POWER OK LED turns on Diagnosis POWER OK LED Check that the POWER OK LED is on If not check for proper supply voltage 115 input to the control transformer power switch breaker fuse and circuit protect relay Next check for proper low voltage 24VAC output from the control transformer and that the 1A fuse is good Check for 24VAC from 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 the control board is bad and must be replaced 3 WTRIN LED is on When the lower or upper float switch is open the inlet water valve energizes and water fills the reservoir Di
82. or Open 2 i PS POWER OK LED 0000000 909 61 Dip Switch K6 Connector 20VDC Infrared Sensor brown ground white signal common dark blue HITE J2 Connector Open K4 Connector Open K5 Connector Open F A Control Board 27 2 Features a Low Water Safety When the inlet water valve opens during fill and refill a 90 second low water safety timer starts Once the upper float switch closes the 90 second low water safety timer terminates If the upper float switch remains open longer than 90 seconds a 1 beep alarm sounds The water valve and 1 beep alarm continue until the upper float switch closes b Ice Purge Cycle Bypass To speed up the diagnostic process the 5 minute ice purge cycle may be bypassed by pressing the SERVICE button on the control board after the gear motor starts WARNING Risk of electric shock Care should be taken not to touch live terminals c Freeze Timer A 30 minute freeze timer starts once the upper float switch closes Should the upper float switch fail to close again before the 30 minute timer terminates the control board shuts down the icemaker and sounds a 5 beep alarm every 5 seconds Also when the lower float switch is open
83. oses is 30 seconds When the mechanical bin control is used S1 dip switch 7 in the off position the gear motor delay after the upper float switch closes is 5 seconds WARNING Do not place S1 dip switch 7 in the off position on dispenser unit applications S1 Dip Switch Setting Bin Control Application Gear Motor Delay Mechanical Bin Control Standard Ice Storage Bins Only Infrared Sensor with Mechanical Bin Control Backup f Mechanical Bin Control Shutdown Delay S1 dip switch 8 Factory set for normal operation No adjustment is required The shutdown delay is the time between the mechanical bin control proximity switch opening and the control board shutting off the icemaker S1 Dip Switch Settin Bin Control 1 g 8 Shutdown Delay 0 25 Seconds 6 7 Seconds g Factory Use S1 Dip Switch 9 amp 10 Factory set for optimum performance Do not adjust 33 D Bin Control An infrared sensor is used to control the level of ice in the dispenser unit ice storage bin S1 dip switch 7 in the ON position The infrared sensor is the primary bin control device 20VDC powers the infrared sensor from the control board K6 connector A green power LED and a yellow ice detection LED are located on the infrared sensor See Fig 1 The paddle actuated mechanical bin control is used as a backup bin control and safety device See Fig 2 For further details see IV D Bin Control Check The paddle actuated mechanical bin control
84. out When high voltage 147 5Vac 5 or more is present the POWER OK LED turns off and the control board shuts down the unit and sounds a 7 beep alarm every 5 seconds When the proper supply voltage resumes the unit automatically starts running again g Gear Motor 8 beep alarm Gear motor operation is confirmed through the gear motor protect relay control board K1 connector If the white orange W O wires on the control board K9 connector gear motor protect circuit do not have continuity gear motor protect relay de energized the compressor relay does not energize If the icemaker is running and the gear motor protect relay de energizes the control board shuts down the compressor and gear motor and sounds an 8 beep alarm every 5 seconds This alarm requires a manual reset Turn the power off and then on again to reset the alarm The icemaker starts running The compressor starts running again when the gear motor protect relay energizes For further details see IV B Diagnostic Procedure h Bin Control 9 beep alarm This alarm provides protection to prevent the icemaker from overfilling the ice storage bin If the infrared sensor is signifying the ice storage bin is empty yellow LED off and the mechanical bin control is signifying the ice storage bin is full proximity switch open the control board shuts down the unit and sounds a 9 beep alarm every 5 seconds This alarm requires a manual reset Turn the power off and then on ag
85. ow Y wire to 9 connector 4 yellow Y wire When the high pressure switch is open 5VDC is present from the K9 connector pin 3 yellow Y wire to connector 4 yellow Y wire If the high pressure switch is open and the control board is not in alarm the control board is bad and must be replaced c Gear Motor Protect Relay K9 connector pins 5 and 46 white orange WO wires When the gear motor protect relay contacts terminals 3 and 4 are open gear motor protect relay 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 the control board is bad and must be replaced When the gear motor protect relay contacts terminals 3 and 4 are closed gear motor protect relay energized 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 46 white orange W O wire If OVDC is present the gear motor protect relay contacts terminals 3 amp 5 are closed If 5VDC is present the gear motor protect relay contacts terminals 3 amp 5 are open and the control board may be in an 8 beep alarm See II C 3 g Gear Motor 8 beep alarm d Mechanical Bin Control K8 connector pins 3 and 4 gray wires When the mechanical bin control proximity switch is c
86. ox cover 3 Confirm that S1 dip switch 1 2 amp 3 are in the proper position for your application See Il C 4 b Infrared Sensor Shutdown Delay S1 dip switch 1 2 amp 3 4 Confirm that the infrared sensor is connected to the K6 connector on the control board Wipe down the infrared sensor lens with a clean warm damp cloth 5 Move the control switch to the ICE position then move the power switch to the ON position 6 Turn on the power supply to start the automatic icemaking process Check that the infrared sensor green LED is on This green LED confirms 20VDC power from the K6 connector on the control board to the infrared sensor and remains on constantly Diagnosis If the green LED is not on check DC voltage at connector dark blue DBU to brown BR If 20VDC is not present the control board is bad and must be replaced If 20VDC is present and the green LED is off the infrared sensor is bad and must be replaced 7 Make sure the GM LED on the control board is on There is a delay of at least 30 seconds before the GM LED turns on after power up After the GM LED turns on press the SERVICE button on the control board to bypass the 5 minute ice purge cycle See Il C 1 Control Board Layout WARNING Risk of electric shock Care should be taken not to touch live terminals The COMP LED turns on 8 GM and COMP LEDs are on Use an object to cover the infrared sensor lens at the bottom of the icemaker I
87. 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 12 Make sure the lower mechanical seal is in place then place the evaporator in position Secure the evaporator to the lower housing using the allen head cap screws 13 Remove the drier then place the new drier in position 14 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG 15 Use an electronic leak detector or soap bubbles to check for leaks Add a trace of refrigerant to the system if using an electronic leak detector and then raise the pressure using nitrogen gas 140 PSIG DO NOT use 404 as a mixture with pressurized air for leak testing 84 16 Evacuate the system and charge it with refrigerant For air cooled and water cooled models see the nameplate for the required refrigerant charge For remote air cooled models see the rating label inside the icemaker 17 Replace the removed parts in the reverse order of which they were removed 18 Replace the panels in their correct positions 19 Move the drain switch to the ICE position Then turn on the power supply 6 Removal and Replacement of Mechanical Seal and Lower Housing 6a Mechanical Seal 1 Drain the water from the evaporator a Move the power switch to the OFF position b Move the control switch to the DRA
88. place Relay 2 Open or stuck 2 Replace contacts e Gear Motor 1 Open windings 1 Replace 2 Auger coupling broke 2 Replace 3 Locked bearings 3 Replace 4 Freeze cycle will not a Control Board 1 Defective 1 See IV B Diagnostic start compressor Procedure b Starter start relay 1 Bad contacts 1 Check for continuity and replace 2 Coil winding opened 2 Replace 3 Tighten Start Capacitor or Run 1 Defective weak 1 Replace Capacitor 72 Possible Cause 4 Freeze cycle will not d Compressor 1 Wiring to compressor 1 Check for loose or open start compressor connection repair or replace continued 2 15 5 connections 2 Tighten Motor winding opened 3 Replace or grounded 4 Compressor locked 4 Replace and motor protector tripped e Power Supply 1 Not within 1 Refer to nameplate and specifications correct b Freeze cycle Refrigerant Line 1 Gas leaks 1 Check for leaks with a leak starts but no ice is detector Repair leaks produced Replace drier and charge with refrigerant See V A Service for Refrigerant Lines 2 Refrigerant line or 2 Remove the restriction or component restricted component and replace the drier b Expansion Valve 1 Defective 1 Replace TXV not adjustable 1 See 2 1 g Compressor d Headmaster C P R 1 Not operating properly 1 Replace remote air cooled and liquid line model tempe
89. place 4 Evaporator bad 4 Replace 3 Overflow from 1 Install a pressure reducing reservoir water does high valve close replace 4 Gear motor protector 1 Refer to nameplate and operates frequently or specifications correct fuse blows frequently p Evaporator Assembly 1 Gear motor bearings 1 Replace bearings or or auger bearings auger See V D 1 Upper worn out Bearing Wear Check c Bin Control 1 Defective 1 IV D Bin Control Check 2 Actuator does not 2 Clean shaft and its move freely corresponding holes or replace bin control d Control Board 1 Erratic operation of 1 See IV B Diagnostic gear motor relay Procedure 75 V Removal and Replacement of Components WARNING This unit should be diagnosed and repaired only by qualified service personnel to reduce the risk of death electric shock serious injury or fire Move the power switch to the OFF position and turn off the power supply before servicing Lockout Tagout to prevent the power from being turned back on inadvertently CHOKING HAZARD Ensure all components fasteners and thumbscrews are securely in place after the 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 A Service for Refrigera
90. pply then remove the front panel Make sure the power switch is in the ON position then move the control switch to the DRAIN position Replace the front panel in its correct position 2 Close the water supply line shut off valve 3 Turn on the power supply and allow the water system to drain for 5 minutes 4 Turn off the power supply then remove the front and top panels Move the power switch to the OFF position 5 Remove all of the ice from the dispenser unit storage bin 96 6 Remove the strap connecting the spout to the chute assembly then remove the spout Proximity Switch Packing ZE 55 Bin Control Assembly Mount Actuator Shaft a e Ay 7 n Spout 2 Chute Insulation Hook and Loop Evaporator Assembly Fig 14 Packing 7 Pour the cleaning solution over the extruding head until the evaporator assembly and the reservoir are full and the solution starts to overflow into the drain pan Note If there is excess scale on the extruding head fill the evaporator assembly and reservoir as described above then use a clamp on the reservoir hose between the reservoir and evaporator assembly to block flow Pour additional cleaning fluid over the extruding head until the evaporator assembly is completely full 8 Replace the spout and strap in their correct positions 9 Allow the icemaker to sit for about 1
91. proper range verify the refrigerant charge Fig 13 3 Check that the condenser drain temperature is stable Top View Removal and Replacement of Fan Motor air cooled and remote air cooled models Note When replacing a fan motor with defective winding it is recommended that a new capacitor be installed 1 Turn off the power supply 2 Remove the panels 3 Remove the junction box cover from the remote condenser unit remote air cooled model 4 Disconnect the fan motor wires and the capacitor wires 5 Remove the fan motor bracket air cooled model fan motor and capacitor 6 Install the new fan motor onto the fan motor bracket air cooled model Install the fan motor assembly and connect the fan motor wires Make sure the wires are properly routed in the wire saddles and do not interfere with the fan blade Install the capacitor and connect the capacitor wires 7 Replace the panels in their correct positions 8 Replace the junction box cover in its correct position remote air cooled model 9 Turn on the power supply 90 J Removal and Replacement of Headmaster Condensing Pressure Regulator C P R Remote Air Cooled Model 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
92. r Assembly Components 81 1 Upper Bearing Wear Check Grains CUu 82 2 Removal and Replacement of Cutter esses 82 Removal and Replacement of Extruding Head 83 4 Removal and Replacement of 83 5 Removal and Replacement of Evaporator 84 6 Removal and Replacement of Mechanical Seal and Lower Housing 85 7 Removal and Replacement of Gear 86 E Removal and Replacement of Air Cooled 87 F Removal and Replacement of Water Cooled 88 Removal and Replacement of Water Regulating Valve Water Cooled Model 89 H Adjustment of Water Regulating Valve Water Cooled Model 90 I Removal and Replacement of Fan Motor air cooled and remote air cooled models 90 J Removal and Replacement of Headmaster Condensing Pressure Regulator C P R Remote Air Cooled MOUGL iint tierce o paa 91 K Removal and Replacement of Liquid Line Valve or Suction Line Valve MLH Model low side parallel rack pnta Mapa Fata
93. r motor and condenser fan are off Check for 115VAC from the K1 connector pin 42 brown BR wire to a white W neutral wire If 115VAC is not present see IV B Diagnostic Procedure step 5 If 115VAC is present check for 115VAC from the control board K1 connector pin 3 black BK wire to a white W neutral wire If 115VAC is not present the control board is bad and must be replaced 8 GM and COMP LED are on and the compressor is off Note To bypass the Ice Purge Cycle press the SERVICE button after the GM LED turns on Check for 115VAC from the control board X1 relay brown BR wire to a white neutral wire If 115VAC is not present see IV B Diagnostic Procedure step 5 If 115VAC is present check X1 relay red R wire to a white neutral wire If 115VAC is not present the control board is bad and must be replaced 64 High Pressure Switch 3 to 4 yellow Open 5VDC Closed OVDC Control Switch Gear Motor Protect Relay Circuit d to 2 white black 5 to 6 white orange ICE Open 5VDC Relay De Energized Open 5VDC DRAIN Closed OVDC Relay Energized Closed OVDC K9 Connector SERVICE Button Ice Purge Cycle Bypass EN
94. r 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 Replace the front panel in its correct position then turn on the power supply 7 Blow the icemaker water line out using the compressed air or carbon dioxide supply 8 Close the icemaker water supply line drain valve 2 Drain the evaporator 1 Turn off the power supply then remove the front panel 2 Move the control switch to the DRAIN position then replace the front panel in its correct position 3 Turn on the power supply and allow the water system to drain for 5 minutes 4 Turn off the power supply then remove the front panel Move the power switch to the OFF position 5 Remove the evaporator drain line hose from the evaporator and attach a compressed air or carbon dioxide supply to the hose 6 Turn on the power supply then 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 7 Move the power switch to the OFF position then turn off the power supply Reconnect the evaporator drain line hose 8 Replace the front panel in its correct position 9 Remove all ice from the dispenser
95. rature too warm e Water Supply Line Condenser water 1 Check and get water cooled model pressure too low or recommended pressure off and high pressure control opens and closes frequently f Water Regulating 1 Set too high 1 Adjust or replace See Valve water cooled V H Adjustment of Water model Regulating Valve 73 2 Low Production Possible Cause 1 Low ice production a Evaporator 1 Dirty 1 Clean See Cleaning and Sanitizing Instructions b Bin Control 1 Erratic sticking 1 See IV D Bin Control defective Check C Losing Water 1 Drain valve leaking 1 Clean or replace 2 Mechanical seal 2 Replace leaking 3 O ring leaking 3 Replace d Expansion Valve 1 Low side pressure too 1 Replace not adjustable low 2 Low side pressure too 2 See if expansion valve bulb is mounted properly and replace the valve if necessary e Refrigerant Line 1 Gas leaks Check for leaks with a lea detector Repair leaks Replace drier and charge with refrigerant See V A Service for Refrigerant Lines 2 Refrigerant lines or Remove the restriction or components restricted component and replace the drier 3 Overcharged 3 Recharge f High Side Pressure 1 Dirty air filter or 1 Clean Too High condenser 2 Ambient or condenser 2 Reduce temperature water temperature too warm 3 Fan motor slow rpm 3 See 3 2 a Fan Motor 4 Fan motor
96. s and GM coupling between auger and GM If FM FMR does not start check FM FMR capacitor FM FMR windings and FM FMR bearings 8 Freeze Cycle COMP LED is on GM LED remains on Comp LLV MLH model and SLV MLH model energize GMR X2 on CB GM GMPR and FM FMR continue Ice production begins 4 to 6 minutes after Comp LLV MLH model and SLV MLH model energize depending on ambient and water conditions Diagnosis Check that COMP LED is on and that Comp or LLV MLH model and SLV MLH model energize If COMP LED is off check DC voltage across GMPR 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 Comp is off check for 115VAC at CB X1 Comp relay Comp LLV MLH model and SLV MLH model Check Comp internal overload motor protector start relay and capacitors 9 Refill Cycle Low Water Safety Cycle As ice is produced the water level in the reservoir drops UF S opens Nothing occurs at this time When LF S opens WV energizes 90 second low water safety timer fill timer starts Comp GMR GM GMPR and FM FMR continue When UF S closes WV de energizes 90 second low water safety timer fill timer terminates and 30 minute freeze timer resets If UF S remains open 90 seconds after WV energizes fill timer exceeded
97. s Steel Galvanized Steel Rear Net 176 Ibs 80 kg Shipping 205 Ibs 93 Permanent Connection Inlet 1 2 FPT Outlet 3 4 FPT Auger type Direct Driven Auger 1 4 HP Gear Motor Float Switch N A Photoelectric Sensor Mechanical Bin Control Proximity Sw Hermetic Model RS70 C1E PFV Air cooled Fin and tube type Copper Tube on Cylinder Thermostatic Expansion Valve R 404A 11b 12oz 8009 High 427 PSIG Low 230 PSIG High Voltage Cut off Relay Internal Protector Fuse 3A Auto reset High Pressure Control Switch Float Switch and Timer Spare Fuse Ice Storage Bin VOLTAGE RANGE 187 253 V AMBIENT TEMP 45 100 F WATER SUPPLY TEMP 45 90 WATER SUPPLY PRESSURE 10 113 PSIG Note We reserve the right to make changes in specifications and design without prior notice 3 FD 1001MWH water cooled Awaiting Data Note We reserve the right to make changes in specifications and design without prior notice 10 4 FD 1001MWH C water cooled Awaiting Data Note We reserve the right to make changes in specifications and design without prior notice 11 5 FD 1001MRH remote air cooled Awaiting Data Note We reserve the right to make changes in specifications and design without prior notice 12 6 1001 remote air cooled AC SUPPLY VOLTAGE COMPRESSOR GEAR MOTOR FAN MOTOR REMOTE OTHER MAXIMUM FUSE SIZE MAX HACR BREAKER USA ONLY MAX CIRC BREAKER CANADA ONL
98. servoir 12 After the gear motor starts turn off the power supply Remove the front panel then move the control switch to the DRAIN position Replace the front panel in its correct position 13 Turn on the power supply and allow the water system to drain for 5 minutes 14 Turn off the power supply then remove the front panel Move the control switch to the ICE position then replace the front panel in its correct position 15 Turn on the power supply to start the automatic icemaking process Allow the icemaker to run for about 30 minutes then turn off the power supply 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 Turn on the power supply to start the automatic icemaking process B Maintenance This icemaker must be maintained individually referring to the instruction manual and labels provided with the icemaker The schedule below is a guideline More frequent maintenance however may be required depending on water quality the icemaker s environment and local sanitation regulations Consult with 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 WARNING 1 Only qualified service technicians should attempt to serv
99. servoir Expansion Valve Evaporator N Overflow m Gear EH Drain Motor LI Valve Drain Outlet Lo Drain Pan Condenser Unit Coupling Condenser Fusible Plug Condensing Pressure Regulator Headmaster Receiver Tank Condenser Fan Motor Insulation Access Coupling _ Valve Compressor 2 Water Circuit Refrigerant Circuit 37 4 FD 1001MLH C low side parallel rack system Inlet Water Valve Spout Float ANANY Fe Switch Water Supply Line TN Insulation x Water Level JI m EH N Reservoir Evaporator N Expansion N Valve Overflow Er I d ow 7 gi DEE Drain Outlet Drain Pan Heat Exchanger Liquid NES Line X Valve Strainer d B Multi Rack Suction Condensing Access S vaye Valve SS Evaporator i L Regulator Water Circuit Valve EPR Valve Refrigerant Circuit 38 B Wiring Diagrams 1 FD 1001MAH C FD 1001MWH C FD 1001MRH C CONTROL BOARD SERVICE BUTTON X1 COMPRESSOR RELAY NEUT GND GR 208 230 60 1 3 WIRE WITH NEUTRAL FOR 115 j LICBR L2 BK WIRE COLOR CODE possemus AER BK BR YELLOW R START d jm GREE
100. sets and the icemaker automatically starts running again once water is restored or the float switch is cleaned or replaced 2 Freeze Cycle Refill If upper float switch remains open 90 seconds after the inlet water valve energizes the compressor de energizes and the control board sounds a 1 beep alarm every 5 seconds The gear motor continues for another 90 seconds to clear the ice from the evaporator The inlet water valve and 1 beep alarm continue until the upper float switch closes The alarm resets and the icemaker automatically starts running again when the upper float switch closes b Control Switch in the DRAIN Position 2 beep alarm When the control switch is left in the DRAIN position longer than 15 minutes the control board sounds a 2 beep alarm every 5 seconds When the control switch is moved to the ICE position the alarm resets and the icemaker starts running again c High Pressure Switch 3 amp 4 beep alarms 1 3 beep alarm For the first and second high pressure switch activation in 1 hour the icemaker shuts down and the control board sounds a 3 beep alarm every 5 seconds When the high pressure switch closes the alarm resets and the icemaker automatically starts running again 2 4 beep alarm For the third high pressure switch activation in 1 hour the icemaker shuts down and the control board sounds a 4 beep alarm every 5 seconds This alarm is to prevent catastrophic failure to the compressor and requires a
101. sition Turn off the power supply then proceed to IV D 2 Mechanical Bin Control Check Infrared Sensor LED Infrared Sensor Thumbscrew aem Infrared Sensor LED Te Infrared Sensor Housing Fig 7 2 Mechanical Control Check When the actuator paddle is not engaged the mechanical bin control is closed and the icemaker produces ice a Backup Bin Control S1 dip switch 7 placed in the ON position the mechanical bin control is used as a backup bin control safety When ice fills the chute and engages the actuator paddle the mechanical bin control opens and the control board shuts down the icemaker within 10 seconds and sounds a 9 beep alarm b Stand Alone Bin Control S1 dip switch 7 placed in the OFF position the mechanical bin control is used as a stand alone bin control The stand alone application should only be used in Hoshizaki standard ice storage bin applications When ice fills the chute and engages the actuator paddle the mechanical bin control opens and the control board shuts down the icemaker within 10 seconds WARNING Do not place S1 dip switch 7 in the OFF position on dispenser unit applications See II C 4 a Default Dip Switch Settings 1 Make sure the power supply is off Lens 2 Remove the strap connecting the spout to the chute assembly See Fig 8 Pull up the chute assembly slightly so that you can access the actuator paddle located in the top of the chute 3 Move the power switch
102. tem is opened Do not replace the drier until after all other repair or replacement has been made Install the new drier with the arrow on the drier in the direction of the refrigerant flow When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 1 Drain the water from the evaporator a Move the power switch to the OFF position b Move the control switch to the DRAIN position Move the power switch to the ON position and allow the water to drain from the evaporator d Move the power switch to the OFF position then turn off the power supply 2 Remove the panels 3 Recover the refrigerant and store it in an approved container 4 Remove the strap connecting the spout to the chute assembly then remove the spout 5 Disconnect the water hoses 6 Remove the allen head cap screws securing the extruding head Using the cutter lift out the auger assembly 7 Remove the insulation and the expansion valve bulb on the suction line 8 Disconnect the inlet and outlet tubing 9 Remove the allen head cap screws securing the evaporator to the lower housing 10 Lift off the evaporator 11 Inspect the mechanical seal and O ring prior to installing the new evaporator The mechanical seal consists of two parts One moves along with the auger and the other is fixed on the lower housing If the contact surfaces of these two
103. ter system and Drain Valve Clean the inlet water valve screen and clean and inspect the drain valve Condenser Inspect Clean if necessary by using a brush or vacuum cleaner air cooled and remote air cooled Icemaker Inspect for oil spots loose components fasteners and wires Upper Bearing Check for wear using 02 round stock or pin gauge Replace both upper extruding head bearing and lower bearing if wear exceeds factory recommendations See the Service Manual for details After Upper Bearing Inspect 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 101 C Preparing the Icemaker for Long Storage CAUTION When storing the icemaker for an extended time or in sub freezing temperatures follow the instructions below to prevent damage When the icemaker is not used for two or three days under normal conditions it is sufficient to only move the power switch to the OFF position When storing the icemaker for extended time or in sub freezing temperatures follow the instructions below 1 Remove the water from the icemaker water supply line 1 Turn off the power supply then remove the front panel 2 Move the power switch to the OFF position 3 Close the icemake
104. the extruding head 6 Place the new extruding head in place and tighten down the allen head cap screws 7 Replace the cutter cutter bolt and spout 8 Replace the panels in their correct positions 9 Move the drain switch to the ICE position Then turn on the power supply 4 Removal and Replacement of Auger 1 Drain the water from the evaporator a Move the power switch to the OFF position b Move the control switch to the DRAIN position Move the power switch to the ON position and allow the water to drain from the evaporator d Move the power switch to the OFF position 2 3 4 5 Turn off the power supply Remove the panels Remove the strap connecting the spout to the chute assembly then remove the spout N Remove the allen head cap screws securing the extruding head Using the cutter lift out the auger assembly 6 Remove the cutter bolt cutter pin flaker only cutter and extruding head from the auger and place on the new auger On flaker models a new cutter pin is supplied with the new auger 7 8 9 10 Install the new auger Replace the removed parts in the reverse order of which they were removed Replace the panels in their correct positions Move the switch to the ICE position Then turn on the power supply 83 5 Removal and Replacement of Evaporator CAUTION Always install a new drier every time the sealed refrigeration sys
105. ther repair or replacement has been made Install the new drier with the arrow on the drier in the direction of the refrigerant flow 4 When brazing protect the valve body and drier by using wet cloths to prevent the valve body and drier from overheating Do not allow the valve body or drier to exceed 250 F 121 C 1 Turn off the power supply 2 Remove the panels 3 Isolate the icemaker from the rack system See V A 4 Refrigerant Recovery Evacuation and Recharge MLH Model low side parallel rack system or the rack system manufacturer s instructions 4 Recover the refrigerant from the icemaker and store it in an approved container 5 6 7 8 9 Remove the screw and the solenoid Disconnect the valve and strainer Place the new valve and strainer in position Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG 2 a a ra Taf 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 10 Evacuate and recharge the system See V A 4 Refrigerant Recovery Evacuation and Recharge MLH Model low side parallel rack system or the rack system manufacturer s instructions 11 Cut the leads of the solenoid allowing enough lead length to reconnect usin
106. trol board is bad and must be replaced When the control switch is in the ICE position the control switch contacts are open OVDC is present from the white 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 white black W BK wire to 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 the control board is bad and must be replaced OVDC is present from the K9 connector pin 41 white black W BK wire to 2 white black W BK wire b High Pressure Switch K9 connector pins 3 and 4 yellow Y wires When the high pressure switch is closed 5VDC is present from the white K5 connector pin closest to red K4 connector to the K9 connector pins 3 and 4 yellow Y wires If 5VDC is not present the control board is bad and must be replaced If 5VDC is present to K9 connector pin 3 yellow Y wire and not to K9 connector pin 4 yellow Y wire the high pressure switch is open and the control board sounds a 3 beep alarm Check continuity across the high pressure switch K9 connector pins 3 and 4 yellow Y wires When the high pressure switch is closed OVDC is present from the K9 connector 3 yell
107. ual should be read carefully before the icemaker is serviced maintenance operations are performed Only qualified service technicians should install service and maintain the icemaker Read the warnings 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 Impornant Sat ty MTOR VARIO 7 DSC 8 8 UN FD 1001 MAH air cooled Mc 8 9 3 FD 1001MWH water cooled 10 4 FD 1001MWH C waterscoblBUl tua es tatu otc uo aat un mtr eto 11 5 FD 1001MRH remote air coO led sosasosivetsenbspsexanavandao 12 6 FD 1001MRH C remote air cooled ict 13 7 FD 1001MLH low side parallel rack 14 8 FD 1001MLH C low side parallel rack 15 B Gondensal 16 1 rer 16 Il General MMON MAM OM 18 Mesas
108. ure 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 except MLH model 1 Attach a vacuum pump to the system Be sure to connect charging hoses to both high and low side access 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 Never allow the oil in the vacuum pump to flow backwards 3 Allow the vacuum pump to pull down to a 29 9 Hg vacuum Evacuating period depends on pump capacity 4 Close the low side valve and high side valve on the gauge manifold 77 5 Disconnect the gauge manifold hose from the vacuum pump and attach it to a refrigerant service cylinder Remember to loosen the connection and purge the air from the hose For air cooled and water cooled models see the nameplate for the required refrigerant charge For remote air cooled models see the rating label inside the icemaker Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard 700 latest edition be used 6 A liquid charge is recommended for charging an R 404A system Invert the service cylinder and place it on scales Open the high side valve on the gauge manifold 7 Allow the system to charge with liquid until the proper c
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110. w o 48 i High Pressure Switch If pressure on the refrigeration circuit high side exceeds Hoshizaki specifications a high pressure switch activates The control board then shuts down the unit until the high side pressure returns to an acceptable level See II C 3 c High Pressure Switch 3 amp 4 beep alarms CONTROL BOARD 1 SERVICE BUTTON S2 DIP SWITCH CONTROL COMPRESSOR RELAY NEUT W GND GR 208 230 60 1 3 WIRE WITH NEUTRAL FOR 115V LICBR L2 BK WIRE COLOR CODE BK BLACK BROWN ORANGE YELLOW POWER SWITCH START REMOTE ONLY CAP lt 108 130MFD GRAY CRANKCASE HEATER PINK VIOLET WHITE LBU LIGHT BLUE DBY DARK BLUE 4 W BU WHITE BLUE lil RED W BK BLACK W BR WHITE BROWN 48 W O WHITE ORANGE CIRCUIT PROTECT RELAY GEAR MOTOR PROTECT RELAY AIR COOLED ONLY REMOTE ONLY BK BR CAP 5MFD BR 7 FAN MOTOR MOTOR THERMAL PROTECTOR EVAP HEATER BK CONTROL TRANSFORMER CUBELET C ONLY CONTROL g fo ooo ooo dS
111. water supply is restored UF S open 90 seconds after WV energized and UF S closes NEN Switch Automatic reset once the control switch is NEN DRAIN position longer than 15 minutes moved to the ICE position High Pressure Switch Automatic reset once pressure drops below First and second activation in 1 hour the high pressure threshold and the high pressure switch closes High Pressure Switch Call for service To avoid possible catastrophic Third activation in 1 hour failure it is recommended to leave the icemaker off until this alarm is resolved Manual reset Turn power off and on again WV off 30 minutes since last WV activation Low Voltage POWER OK LED turns off if voltage 92Vac 5 or less protection operates High Voltage The control voltage safeties automatically 147Vac 5 or more reset when voltage is corrected GMPR contacts fail to close MBC actuator paddle engaged Legend Comp compressor DV drain valve FM fan motor FMR fan motor remote GM gear motor GMPR gear motor protect relay LLV liquid line valve model only MBC mechanical bin control SLV suction line valve model only UF S float switch WV inlet water valve 29 3 Alarm Safeties a Low Water Safety 1 beep alarm 1 Fill Cycle If upper float switch remains open 90 seconds after the inlet water valve has energized the control board sounds a 1 beep alarm every 5 seconds The alarm re
112. witch blue Spring Retainer Clip Lower Float Switch white Plastic Retainer Clip Fig 3 34 Technical Information A Water Circuit and Refrigeration Circuit 1 1001 air cooled Inlet Water Valve gt lt Float EIS Water Supply Line Switch PME Water Level FE Mosora Evaporator it p Ly Expansion 5 Valve HIN NE Overflow Drain Gear ERE A Valve Motor Drain Outlet _ BEEN Y I Pressure Switch Condenser Condenser Fan Motor Access Valve Compressor D Water Circuit 3 _ Refrigerant Circuit 35 2 FD 1001MWH C water cooled Inlet Water Valve zd a Float ANANT LAD i Switch 1 Insulation Water Supply Line x T xz Water Level S Reservoir Overflow Gear H Drain pee L Evaporator Valve Drain Pan RN Drier 1 Pressure Cond Switch Water Inlet de Water E i Outlet Water Regulating Valve Access Valve Compressor Water Circuit m Refrigerant Circuit 36 3 FD 1001MRH C remote air cooled Inlet Water Valve t M Spou oa LASI TERT ae gt lt Switch li ater Supply Line NI Insulation Water Level Re
113. wn Delay S1 dip switch 1 2 and d 2 Mechanical Bin Control The control board shuts down the entire unit within 10 seconds when the mechanical bin control proximity switch opens actuator paddle engaged For further details see II C 4 f Mechanical Bin Control Shutdown Delay S1 dip switch 8 28 f High Voltage and Low Voltage Cut outs The maximum and minimum allowable supply voltages of this icemaker are limited by the high voltage 147Vac 5 or more and low voltage 92 5 or less cut outs When high voltage 147Vac 5 or more is present the icemaker automatically stops and the control board signals with a 7 beep alarm every 3 seconds When low voltage 92Vac 5 or less is present the icemaker automatically stops and the control board signals with a 6 beep alarm every 3 seconds When the proper supply voltage is resumed the icemaker automatically starts running again 9 LED Lights and Alarm Safeties Chart The POWER LED indicates proper control voltage and will remain on unless control voltage problem occurs For further details see Sequence of Operation Energized Fill Cycle WTRIN Ice Purge Cycle GM GM FM FMR min min Freeze Cycle with refill S WTRIN refill GM Comp On until UF S closes COMP FM FMR LLV Alarm sounds after SLV WV refill The built in alarm safeties ST oUm the unit No of Beeps 1 Low Water Safety Automatic reset once

Hoshizaki FD-1001MLH(-C) Refrigerator User Manual

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