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Hoshizaki F-1500MA-C, Service Manual, Page: 2 / 70

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IMPORTANT

Only qualified service technicians should attempt to service or maintain this
icemaker. No 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.

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

Web Site: www.hoshizakiamerica.com

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

following information:

•  Model Number

•  Serial Number

•  Complete and detailed explanation of the problem

Summary of Contents for F-1500MA-C

Page 1: ...shizaki A Superior Degree of Reliability www hoshizaki com Models F 1500MAH C F 1500MWH C F 1500MRH C Modular Flaker Hoshizaki America Inc Number 73111 Issued 7 29 2004 Revised 10 11 2005 SERVICE MANU...

Page 2: ...er have any questions or concerns which have not been satisfactorily addressed please call or write to the HOSHIZAKI Technical Support Department for assistance HOSHIZAKI AMERICA INC 618 Highway 74 So...

Page 3: ...ircuit and Refrigeration Circuit 18 F 1500MAH C 18 F 1500MWH C 19 F 1500MRH C 20 2 Wiring Diagrams 21 F 1500MAH C 21 F 1500MWH C 22 F 1500MRH C 23 3 Sequence of Electrical Circuit 24 4 Timing Chart 32...

Page 4: ...l and Replacement of Condensing Pressure Regulator C P R remote air cooled model only 56 8 Removal and Replacement of Evaporator Assembly 57 9 Removal and Replacement of Fan Motor 61 10 Removal and Re...

Page 5: ...WEIGHT appoximate Net 300 lbs 136 kg Shipping 325 lbs 148 kg CONNECTIONS ELECTRIC Permanent Connection WATER SUPPLY Inlet 1 2 FPT DRAIN Outlet 3 4 FPT ICE MAKING SYSTEM Auger type HARVESTING SYSTEM D...

Page 6: ...lbs 136 kg Shipping 325 lbs 148 kg CONNECTIONS ELECTRIC Permanent Connection WATER SUPPLY Inlet 1 2 FPT DRAIN Outlet 3 4 FPT ICE MAKING SYSTEM Auger type HARVESTING SYSTEM Direct Driven Auger 1 2 HP G...

Page 7: ...et 300 lbs 136 kg Shipping 325 lbs 148 kg CONNECTIONS ELECTRIC Permanent Connection WATER SUPPLY Inlet 1 2 FPT Cond Inlet 1 2 FPT DRAIN Outlet 3 4 FPT Cond Outlet 3 8 FPT ICE MAKING SYSTEM Auger type...

Page 8: ...s 132 kg Shipping 325 lbs 143 kg CONNECTIONS ELECTRIC Permanent Connection WATER SUPPLY Inlet 1 2 FPT Cond Inlet 1 2 FPT DRAIN Outlet 3 4 FPT Cond Outlet 3 8 FPT ICE MAKING SYSTEM Auger type HARVESTIN...

Page 9: ...INISH Stainless Steel Galvanized Steel Rear WEIGHT appoximate Net 290 lbs 132 kg Shipping 315 lbs 143 kg CONNECTIONS ELECTRIC Permanent Connection WATER SUPPLY Inlet 1 2 FPT DRAIN Outlet 3 4 FPT ICE M...

Page 10: ...FINISH Stainless Steel Galvanized Steel Rear WEIGHT appoximate Net 290 lbs 132 kg Shipping 315 lbs 143 kg CONNECTIONS ELECTRIC Permanent Connection WATER SUPPLY Inlet 1 2 FPT DRAIN Outlet 3 4 FPT ICE...

Page 11: ...11 2 Condenser Unit URC 12F...

Page 12: ...S ELECTRIC Permanent Connection REFRIGERATION Discharge Line 1 1 16 12 UNF Fitting 10 AEROQUIP Liquid Line 5 8 18 UNF Fitting 6 AEROQUIP CONDENSER Air cooled Fin and tube type FAN MOTOR PROTECTION The...

Page 13: ...nformation 1 Construction F 1500MAH C Fan Motor Condenser Compressor Drier Ice Chute ControlWater Valve Water Supply Inlet Evaporator Gear Motor Junction Box Expansion Valve FlushWater Valve Control B...

Page 14: ...14 F 1500MWH C Water Regulator Condenser Compressor Drier Ice Chute ControlWater Valve Water Supply Inlet Evaporator Gear Motor Junction Box Expansion Valve FlushWater Valve Control Box Bin Control...

Page 15: ...15 F 1500MRH C Junction Box Expansion Valve FlushWater Valve Control Box Bin Control Receiver Tank Compressor Drier Ice Chute ControlWater Valve Water Supply Inlet Evaporator Gear Motor...

Page 16: ...oggle Switch F Water Control Relay Q 6P Plug Housing G Gear Motor Protect Relay R Fuse H Spout Control Relay S 3P Plug Housing I Starter T 4P Plug Housing J Capacitor U Protector K Run Capacitor V Spo...

Page 17: ...Relay N Rocker Switch D Transformer O 4P Plug Housing E Circuit Protect Relay P Toggle Switch F Water Control Relay Q 6P Plug Housing G Gear Motor Protect Relay R Fuse H Spout Control Relay S 3P Plug...

Page 18: ...18 III Technical Information 1 Water Circuit and Refrigeration Circuit F 1500MAH C...

Page 19: ...19 F 1500MWH C...

Page 20: ...20 F 1500MRH C...

Page 21: ...21 2 Wiring Diagrams F 1500MAH C...

Page 22: ...22 F 1500MWH C...

Page 23: ...23 F 1500MRH C...

Page 24: ...24 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 25: ...25 b When reservoir has been filled gear motor starts immediately...

Page 26: ...26 c Compressor starts about 60 sec after gear motor starts...

Page 27: ...27 d Bin control operates and about 6 sec later compressor and gear motor stop simultaneously...

Page 28: ...28 e Low water except water cooled model...

Page 29: ...29 f When flush timer operates for 21 min every 12 hours or when flush switch is moved to FLUSH position flush water valve opens and flushes reservoir and evaporator...

Page 30: ...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 when the coil...

Page 31: ...31 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 32: ...32 4 Timing Chart...

Page 33: ...33...

Page 34: ...34...

Page 35: ...35...

Page 36: ...36...

Page 37: ...152 572 90 145 547 140 531 132 499 gal day l day 100 126 477 121 456 113 429 EVAPORATOR OUTLET TEMP 70 16 9 16 9 16 9 F C 80 16 9 18 8 18 8 90 18 8 18 8 19 7 100 19 7 19 7 19 7 HEAD PRESSURE 70 210 14...

Page 38: ...121 458 119 449 112 422 gal day l day 100 107 404 103 388 96 363 EVAPORATOR OUTLET TEMP 70 16 9 16 9 16 9 F C 80 16 9 18 8 18 8 90 18 8 18 8 19 7 100 19 7 19 7 19 7 HEAD PRESSURE 70 210 14 8 210 14 8...

Page 39: ...y kg day 100 683 2586 857 3245 1432 5421 EVAPORATOR OUTLET TEMP 70 25 4 25 4 25 4 F C 80 25 4 25 4 25 4 90 25 4 25 4 25 4 100 25 4 25 4 25 4 HEAD PRESSURE 70 262 18 4 263 18 5 265 18 6 80 262 18 4 263...

Page 40: ...l day 100 634 2400 778 2945 1451 5493 EVAPORATOR OUTLET TEMP 70 24 5 23 5 28 2 F C 80 24 5 23 5 28 2 90 24 5 23 5 28 2 100 24 5 23 5 28 2 HEAD PRESSURE 70 264 18 6 264 18 6 265 18 7 80 264 18 6 264 1...

Page 41: ...90 148 558 gal day kg day 100 143 541 139 524 128 485 EVAPORATOR OUTLET TEMP 70 19 7 19 7 19 7 F C 80 19 7 21 6 21 6 90 21 6 21 6 23 5 100 23 5 23 5 23 5 HEAD PRESSURE 70 215 15 215 15 215 15 80 228 1...

Page 42: ...508 127 481 gal day l day 100 124 468 120 454 111 420 EVAPORATOR OUTLET TEMP 70 19 7 19 7 19 7 F C 80 19 7 21 6 21 6 90 21 6 21 6 23 5 100 23 5 23 5 23 5 HEAD PRESSURE 70 215 15 215 15 215 15 80 228 1...

Page 43: ...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 4...

Page 44: ...rocedures 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 factory with two cutter heads F...

Page 45: ...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 46: ...1 Clean 2 Ambient or condenser 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 s...

Page 47: ...ercurrent f Power Supply 1 Circuit Ampacity too low 1 Install a larger sized conductor 6 Gear Motor and Compressor start but no ice is produced a Refrigerant Line 1 Gas Leaks 1 Check for leaks with a...

Page 48: ...oo warm 2 Get cooler 3 Condenser water pressure too low or off Water cooled model only 3 Check and get recommended pressure 4 Fan rotating too slow 4 See 3 1 a Fan Motor 5 Water Regulating Valve clogg...

Page 49: ...ALE AWAY or LIME A WAY solution to clean periodically If the water is found hard by testing install a softener 2 a Water Supply 1 Water pressure too high 1 Install a pressure Reducing Valve b Control...

Page 50: ...cess valves one on the low side and one on the high side line Using proper refrigerant practices recover the refrigerant from the access valves and store it in an approved container Do not discharge t...

Page 51: ...e or liquid dispensing device to add the remaining liquid charge through the low side access port with the unit running 9 Close the two refrigerant access valves and disconnect the hoses and service m...

Page 52: ...approved container if required by an applicable law 4 Remove the discharge suction and access pipes from the compressor using brazing equipment WARNING When repairing a refrigerant system be careful n...

Page 53: ...l 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 law 3 Remov...

Page 54: ...s 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 replace th...

Page 55: ...be 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 the capillary tube 7 Install the new dri...

Page 56: ...nd 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 usi...

Page 57: ...on 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 extruding head if it exceeds the wear t...

Page 58: ...rator 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 par...

Page 59: ...r a Braze the new evaporator with nitrogen gas flowing at a pressure of 3 4 PSIG b Replace the drier c Check for leaks using nitrogen gas 140 PSIG and soap bubbles d Evacuate the system Charge it with...

Page 60: ...60 Rubber O ring Nylon Ring Bolt Dowel Pin Cutter Extruding Head Strap Evaporator Socket Head Cap Screw Auger MechanicalSeal O ring Housing Gear Motor Coupling Spline Socket Head Cap Screw...

Page 61: ...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 62: ...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 63: ...t temperature is resumed Air Cooled Models and Remote Air Cooled Models 1 Run the icemaker with the water supply line shut off valve closed 2 Open the drain valve and blow out the water inlet line by...

Page 64: ...e power supply and wait for 20 seconds 3 Close the water supply line shut off valve 4 Open the drain valve and quickly blow the water supply line from the drain valve to drain water in the condenser 5...

Page 65: ...oratory Inc with 0 8 gallons 3 l of warm water This is a minimum amount Make more solution if necessary IMPORTANT For safety and maximum effectiveness use the solution immediately after dilution b Cle...

Page 66: ...il the icemaker stops making ice 13 Remove the front panel 14 Move the flush switch to the FLUSH position to drain the remainder of the solution 15 After the solution is drained move the flush switch...

Page 67: ...emove the four thumbscrews spout switch cover belt switch and actuator 13 Soak the removed parts in 25 gallons 1 l of sanitizing solution for 10 minutes then wipe them down 14 Rinse the parts thorough...

Page 68: ...ion 13 After the solution is drained move the flush switch to the ICE position 14 Replace the front panel in its correct position 15 Open the water supply line shut off valve and supply water to the r...

Page 69: ...Bearing Mechanical Seal Consult with your local distributor about inspection and maintenance service To obtain the name and phone number of your local distributor call Hoshizaki Technical Support at 1...

Page 70: ...er removes dirt or dust from the air and keeps the condenser from getting clogged As the filter gets clogged the icemaker s performance will be reduced Check the filter at least twice a month When clo...

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