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Hoshizaki F-2000MLH, Service Manual

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HOSHIZAKI AMERICA, INC.
618 Highway 74 South
Peachtree City, GA  30269

Attn:  HOSHIZAKI Technical Support Department

Phone:  1-800-233-1940 Technical Service

(770) 487-2331

Fax:

(770) 487-3360

NOTE:

   To expedite assistance, all correspondence/communication MUST  include the following
    information:

• Model Number

• Serial Number

• Complete and detailed explanation of the problem

IMPORTANT

Only qualified service technicians should attempt to service or maintain this icemaker.
No such service or maintenance should be undertaken until the technician has
thoroughly read this Service Manual.

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 or write to the HOSHIZAKI Technical Support Department for
assistance.

Summary of Contents for F-2000MLH

Page 1: ...SERVICEMANUAL ISSUED JULY 16 2004 MODEL HOSHIZAKI MODULAR FLAKER F 2000MWH C F 2000MRH C F 2000MRH3 C F 2000MLH C NO 73116 REVISED AUG 20 2004...

Page 2: ...tion of the problem IMPORTANT Only qualified service technicians should attempt to service or maintain this icemaker No such service or maintenance should be undertaken until the technician has thorou...

Page 3: ...0MLH C 12 2 CONDENSER UNIT 13 URC 20F 13 II GENERAL INFORMATION 15 1 CONSTRUCTION 15 F 2000MWH C 15 F 2000MRH C F 2000MRH3 C 16 F 2000MLH C 17 2 CONTROL BOX LAYOUT 18 F 2000MWH C F 2000MRH C 18 F 2000...

Page 4: ...NT OF EXPANSION VALVE 62 6 REMOVAL AND REPLACEMENT OF WATER REGULATING VALVE WATER COOLED MODELS ONLY 63 7 REMOVAL AND REPLACEMENT OF CONDENSING PRESSURE REGULATOR C P R REMOTE AIR COOLED MODELS ONLY...

Page 5: ...55 kg CONNECTIONS ELECTRIC Permanent Connection WATER SUPPLY Inlet 1 2 FPT Cond Inlet 1 2 FPT DRAIN Outlet 3 4 FPT Cond Outlet 1 2 FPT ICE MAKING SYSTEM Auger type HARVESTING SYSTEM Direct Driven Auge...

Page 6: ...s Steel Galvanized Steel Rear WEIGHT Net 310 lbs 140 kg Shipping 342 lbs 155 kg CONNECTIONS ELECTRIC Permanent Connection WATER SUPPLY Inlet 1 2 FPT Cond Inlet 1 2 FPT DRAIN Outlet 3 4 FPT Cond Outlet...

Page 7: ...Permanent Connection WATER SUPPLY Inlet 1 2 FPT DRAIN Outlet 3 4 FPT REFRIGERATION Discharge line 1 1 16 12 UNF Fitting 10 AEROQUIP CIRCUIT Liquid line 5 8 18 UNF Fitting 6 AEROQUIP ICE MAKING SYSTEM...

Page 8: ...IC Permanent Connection WATER SUPPLY Inlet 1 2 FPT DRAIN Outlet 3 4 FPT REFRIGERATION Discharge line 1 1 16 12 UNF Fitting 10 AEROQUIP CIRCUIT Liquid line 5 8 18 UNF Fitting 6 AEROQUIP ICE MAKING SYST...

Page 9: ...lbs 163 kg CONNECTIONS ELECTRIC Permanent Connection WATER SUPPLY Inlet 1 2 FPT DRAIN Outlet 3 4 FPT REFRIGERATION Discharge line 1 1 16 12 UNF Fitting 10 AEROQUIP CIRCUIT Liquid line 5 8 18 UNF Fitti...

Page 10: ...onnection WATER SUPPLY Inlet 1 2 FPT DRAIN Outlet 3 4 FPT REFRIGERATION Discharge line 1 1 16 12 UNF Fitting 10 AEROQUIP CIRCUIT Liquid line 5 8 18 UNF Fitting 6 AEROQUIP ICE MAKING SYSTEM Auger type...

Page 11: ...ON Suction line 1 1 16 12 UNF Fitting 10 AEROQUIP CIRCUIT Liquid line 5 8 18 UNF Fitting 6 AEROQUIP ICE MAKING SYSTEM Auger type HARVESTING SYSTEM Direct Driven Auger 400 W Gear Motor ICE MAKING WATER...

Page 12: ...TION Suction line 1 1 16 12 UNF Fitting 10 AEROQUIP CIRCUIT Liquid line 5 8 18 UNF Fitting 6 AEROQUIP ICE MAKING SYSTEM Auger type HARVESTING SYSTEM Direct Driven Auger 400 W Gear Motor ICE MAKING WAT...

Page 13: ...13 2 CONDENSER UNIT URC 20F...

Page 14: ...9 mm REFRIGERANT CHARGE URC 20F R404A 7 lbs 11 oz 3500 g WEIGHT Net 104 lbs 47 kg Shipping 115 lbs 52 kg CONNECTIONS REFRIGERANT One Shot Couplings Aeroquip ELECTRICAL Permanent Connection CONDENSER A...

Page 15: ...15 II GENERAL INFORMATION 1 CONSTRUCTION F 2000MWH C...

Page 16: ...16 F 2000MRH C F 2000MRH3 C...

Page 17: ...17 F 2000MLH C...

Page 18: ...18 2 CONTROL BOX LAYOUT F 2000MWH C F 2000MRH C Note The above component names are identical with the Wiring Label but not with the Parts List...

Page 19: ...19 F 2000MRH3 C...

Page 20: ...20 F 2000MLH C...

Page 21: ...21 III TECHNICAL INFORMATION 1 WATER CIRCUIT AND REFRIGERATION CIRCUIT F 2000MWH C...

Page 22: ...22 F 2000MRH C F 2000MRH3 C...

Page 23: ...23 F 2000MLH C...

Page 24: ...24 2 WIRING DIAGRAMS F 2000MWH C...

Page 25: ...25 F 2000MRH C...

Page 26: ...26 F 2000MRH3 C...

Page 27: ...27 F 2000MLH C...

Page 28: ...28 3 SEQUENCE OF ELECTRICAL CIRCUIT a When Power Switch is moved to ON position and Flush Switch to ICE position water starts to be supplied to Reservoir...

Page 29: ...29 b When Reservoir has been filled Gear Motor starts immediately...

Page 30: ...30 c Compressor starts F 2000MLH C only two solenoid valves open about 60 sec after Gear Motor starts...

Page 31: ...31 d Bin Control operates and about 6 sec later Compressor and Gear Motor stop simultaneously F 2000MLH C twosolenoidvalvesclose...

Page 32: ...32 e Low Water Except Water cooled Model where Compressor will operate intermittently...

Page 33: ...33 f When Flush Timer operates for 15 min every 12 hours or when Flush Switch is moved to FLUSH position Flush Water Valve opens and flushes Reservoir and Evaporator...

Page 34: ...ines when 208 230V are supplied to Circuit Protect Relay it protects the circuit from being miswired If the power supply is properly connected the contact of Circuit Protect Relay does not move even w...

Page 35: ...35 h When Pressure Switch opens power supply to the control board is cut off causing the Compressor and Gear Motor to turn off immediately...

Page 36: ...6 FLUSH TIMER 7 FLUSH SWITCH 8 FLUSH WATER VALVE 9 BIN CONTROL 10 GEAR MOTOR RELAY 11 GEAR MOTOR 12 FAN MOTOR 13 COMPRESSOR OR TWO SOLENOID VALVES 2000MLF C 14 PRESSURE SWITCH 15 HEATER ON OFF ON OFF...

Page 37: ...9 BIN CONTROL 10 GEAR MOTOR RELAY 11 GEAR MOTOR 12 FAN MOTOR 14 PRESSURE SWITCH 15 HEATER ON OFF ON OFF ON OFF ON OFF ON OFF 1 2 2 3 FLUSH ICE ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF U...

Page 38: ...38...

Page 39: ...BIN CONTROL 10 GEAR MOTOR RELAY 11 GEAR MOTOR 12 FAN MOTOR 14 PRESSURE SWITCH 15 HEATER ON OFF ON OFF ON OFF ON OFF ON OFF 1 2 2 3 FLUSH ICE ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF UP...

Page 40: ...40 16 SPOUT CONTROL RELAY ON OFF 17 THERMOSTAT CONTROL 2000MWE ON OFF Compressor Discharge Temp 203 F Compressor Discharge Temp 225 F...

Page 41: ...2163 8 19 TOTAL 90 1062 4 02 1374 5 20 2278 8 62 gal day m3 day 100 1105 4 18 1442 5 46 2513 9 51 EVAPORATOR OUTLET TEMP 70 11 12 11 12 11 12 F C 80 11 12 11 12 11 12 90 11 12 11 12 11 12 100 11 12 11...

Page 42: ...5 EVAPORATOR OUTLET TEMP 70 10 12 10 12 12 11 F C 80 10 12 10 12 12 11 90 10 12 10 12 12 11 100 10 12 10 12 12 11 HEAD PRESSURE 70 262 18 4 263 18 5 266 18 7 80 262 18 4 263 18 5 266 18 7 90 262 18 4...

Page 43: ...VAPORATOR OUTLET TEMP 70 12 11 12 11 12 11 F C 80 12 11 12 11 12 11 90 12 11 12 11 14 10 100 14 10 14 10 14 10 HEAD PRESSURE 70 221 15 5 221 15 5 221 15 5 80 230 16 1 230 16 1 230 16 1 90 238 16 8 238...

Page 44: ...EVAPORATOR OUTLET TEMP 70 12 11 12 11 12 11 F C 80 12 11 14 10 14 10 90 14 10 14 10 14 10 100 14 10 14 10 14 10 HEAD PRESSURE 70 220 15 5 220 15 5 220 15 5 80 227 15 9 227 15 9 227 15 9 90 233 16 4 23...

Page 45: ...0 EVAPORATOR OUTLET TEMP 70 14 10 14 10 14 10 F C 80 14 10 14 10 14 10 90 14 10 14 10 16 9 100 16 9 16 9 16 9 HEAD PRESSURE 70 219 15 4 219 15 4 219 15 4 80 230 16 2 230 16 2 230 16 2 90 241 16 9 241...

Page 46: ...EVAPORATOR OUTLET TEMP 70 12 11 12 11 14 10 F C 80 14 10 14 10 14 10 90 14 10 14 10 14 10 100 14 10 14 10 14 10 HEAD PRESSURE 70 222 15 6 222 15 6 222 15 6 80 225 15 8 225 15 8 225 15 8 90 228 16 0 2...

Page 47: ...ATER 70 258 921 234 887 230 869 CONSUMPTION PER 24 HR 80 225 851 220 832 215 814 TOTAL 90 211 798 207 785 202 764 gal day m3 day 100 198 748 194 733 180 680 EVAPORATOR OUTLET TEMP 70 12 11 12 11 12 11...

Page 48: ...90 188 710 185 699 182 687 gal day m3 day 100 180 680 177 669 149 565 EVAPORATOR OUTLET TEMP 70 12 11 12 11 12 11 F C 80 12 11 12 11 12 11 90 12 11 12 11 14 10 100 14 10 14 10 14 10 HEAD PRESSURE 70...

Page 49: ...side line of the system Or prepare a thermometer to check the condenser drain temperature 2 Rotate the Adjustment Screw by using a flat blade screwdriver so that the pressure gauge shows 260 PSIG R 40...

Page 50: ...er according to the following procedures 1 Remove the Bolt 2 Take off the upper Cutter Head of the two coarse flakes or set the upper Cutter Head on the lower fine flakes The unit is shipped from the...

Page 51: ...ry according to the following instructions 1 Remove the Cap from the E P R Access Valve and connect a pressure gauge The E P R needs no adjustment if the pressure gauge shows 22 PSIG for F 2000MLH C 2...

Page 52: ...alve 1 Coil winding opened 1 Replace i Shut off Valve 1 Closed 1 Open 2 Water failure 2 Wait till water is supplied j Plug and Receptacle 1 Disconnected 1 Connect Control Box 2 Terminal out of Plug or...

Page 53: ...water temperature too warm 2 Get cooler 3 Condenser water pressure too low or off Water cooled model only 3 Check and get recommended pressure 4 Water Regulating Valve set too high Water cooled model...

Page 54: ...C only 1 Continues to leak 1 Check and replace 5 Gear Motor and Compressor start for F 2000MLH C two Solenoid Valves open but no ice is produced a Refrigerant Line 1 Gas Leaks 1 Check for leaks with...

Page 55: ...ooled model only 3 Check and get recommended pressure 4 Fan rotating too slow 4 See 3 1 a Fan Motor 5 Water Regulating Valve clogged Water cooled model only 5 Clean 6 Condensing unit out of order F 20...

Page 56: ...is found hard by testing install a softener f Evaporator Pressure Regulator F 2000 MLH C only 1 Low side pressure too low 1 Check Evaporator Pressure Regulator and adjust or replace it if necessary 2...

Page 57: ...Manifold Hoses to the high side low side and Evaporator Pressure Regulator E P R access ports to purge or evacuate the unit To recharge the system simply open the Suction and Liquid LineShut offValve...

Page 58: ...o loosen the connection and purge the air from the Hose See the Nameplate for the required refrigerant charge Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Stan...

Page 59: ...rant and store it in an approved container Do not discharge the refrigerant into the atmosphere 4 Do not use silver alloy or copper alloy containing Arsenic 5 Do not use R 404A as a mixture with press...

Page 60: ...ion and Access Pipes from the Compressor using brazing equipment WARNING When repairing a refrigerant system be careful not to let the burner flame contact any electrical wires or insulation 5 Remove...

Page 61: ...l after all other repair or replacements have been made 1 Turn off the power supply and remove the panels 2 Recover the refrigerant and store it in an approved container if required by an applicable l...

Page 62: ...T Sometimes moisture in the refrigerant circuit exceeds the Drier capacity and freezes up at the Expansion Valve Always install a new Drier every time the sealed refrigeration system is opened Do not...

Page 63: ...container 3 Disconnect the Capillary Tube using brazing equipment 4 Disconnect the Flare connections of the valve 5 Remove the screws and the valve from the Bracket 6 Install the new valve and braze t...

Page 64: ...and store it in an approved container 4 Remove the C P R using brazing equipment 6 Braze the new C P R with nitrogen gas flowing at the pressure of 3 4 PSIG WARNING Always protect the valve body by us...

Page 65: ...9 Remove the Rubber O ring and the Nylon Ring at the top of the Evaporator EXTRUDING HEAD 10 Remove the three Socket Head Cap Screws and lift off the Extruding Head 11 Replace the Bearing inside the E...

Page 66: ...orator BEARING LOWER AND MECHANICAL SEAL 20 The Mechanical Seal consists of two parts One moves along with the Auger and the other is fixed on the Bearing Lower If the contact surfaces of these two pa...

Page 67: ...t a pressure of 3 4 PSIG b Replace the Drier except F 2000MLH C c Check for leaks using nitrogen gas 140 PSIG and soap bubbles d Evacuate the system Charge it with refrigerant except F 2000MLH C For t...

Page 68: ...68...

Page 69: ...off the power supply remove the panels and close the Water Supply Line Shut off Valve 2 Disconnect the terminals from the Control Water Valve 3 Loosen the Fitting Nut on the Control Water Valve Inlet...

Page 70: ...5 Remove the Drain Pipe from the Flush Water Valve 6 Connect the Drain Pipe to the new Flush Water Valve and place the valve in position 7 Connect the Hose to the Flush Water Valve and secure it with...

Page 71: ...lways protect the valve body by using a damp cloth to prevent the valve from overheating Do not braze with the valve body exceeding 250 F 8 Check for leaks using nitrogen gas 140 PSIG and soap bubbles...

Page 72: ...g equipment 6 Braze the new E P R with nitrogen gas flowing at a pressure of 3 4 PSIG WARNING Always protect the E P R by using a damp cloth to prevent the E P R from overheating Do not braze with the...

Page 73: ...store it in an approved container 4 Remove the screw and the Solenoid 5 Disconnect the By pass Valve using brazing equipment 6 Install the new valve CAUTION Always protect the valve body by using a da...

Page 74: ...74 11 Connect the new Solenoid leads 12 Attach the Solenoid to the valve body and secure it with a screw 13 Replace the panels in their correct position 14 Turn on the power supply...

Page 75: ...r or carbon dioxide Shut off the icemaker until the proper ambient temperature is resumed Remote Air cooled Models 1 Run the icemaker with the Water Supply Line Shut off Valve closed 2 Open the Drain...

Page 76: ...s cleaning this unit at least once a year More fre quent cleaning however may be required in some existing water conditions 2 To prevent injury to individuals and damage to the icemaker do not use amm...

Page 77: ...9 Remove the Cover of the Reservoir 10 Fill the Reservoir with the cleaning solution 11 Replace the Cover of the Reservoir and the Control Water Valve in their correct positions Note This unit is desi...

Page 78: ...ly and make ice using the solution until the icemaker stops icemaking 9 Remove the Front Panel 10 Move the Flush Switch to the FLUSH position to drain the sanitizing solution 11 Move the Flush Switch...

Page 79: ...mble the Bin Control Assembly by removing the two Snap Pins Shaft and Activator 8 Remove the two Thumbscrews Spout Switch Cover Spout Switch and Actuator 9 Remove the three Thumbscrews and the Spout 1...

Page 80: ...d with the icemaker 2 To have the optimum performance of this icemaker the following consumable parts need periodic inspection maintenance and replacement Extruding Head Housing Gear Motor Auger Mecha...

Page 81: ...scoopprovided Binaccessory The Storage Bin is for ice use only Do not store anything else in the bin Keep the scoop clean Clean using a neutral cleaner and rinse thoroughly Clean the bin liner using a...

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