Hoshizaki F-1500MAH Service Manual
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Hoshizaki F-1500MAH Service Manual

Hoshizaki F-1500MAH Service Manual

Modular flaker
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Hoshizaki
Hoshizaki America, Inc.
"A Superior Degree
of Reliability"
www.hoshizaki.com
Modular Flaker
Models
F-1500MAH(-C)
F-1500MWH(-C)
F-1500MRH(-C)
SERVICE MANUAL
Number: 73111
Issued: 7-29-2004
Revised: 10-11-2005

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  • Page 1 Hoshizaki Hoshizaki America, Inc. Modular Flaker Models F-1500MAH(-C) F-1500MWH(-C) F-1500MRH(-C) SERVICE MANUAL “A Superior Degree of Reliability” www.hoshizaki.com Number: 73111 Issued: 7-29-2004 Revised: 10-11-2005...
  • Page 2 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.

  • Page 3: Table Of Contents

    CONTENTS I. Specifications ........................5 1. Icemaker ........................5 F-1500MAH ........................ 5 F-1500MAH-C ......................6 F-1500MWH ....................... 7 F-1500MWH-C ......................8 F-1500MRH ....................... 9 F-1500MRH-C......................10 2. Condenser Unit ......................11 URC-12F ........................11 II. General Information ......................13 1. Construction ....................... 13 F-1500MAH(-C)......................
  • Page 4 VI. Removal and Replacement of Components ..............50 1. Service for Refrigerant Lines ..................50 [a] Refrigerant Recovery................... 50 [b] Evacuation and Recharge [R-404A] ..............50 2. Brazing ........................51 3. Removal and Replacement of Compressor ..............52 4. Removal and Replacement of Drier ................53 5.

  • Page 5: Specifications

    I. Specifications 1. Icemaker F-1500MAH AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral for 115V) COMPRESSOR 240 V 9.8 RLA 56 LRA GEAR MOTOR 120 V 5.6 FLA 1/2 HP FAN MOTOR 115 V 0.85FLA 1/15 HP OTHER 120 V 0.03A...

  • Page 6: F-1500Mah-C

    F-1500MAH-C AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral for 115V) COMPRESSOR 240 V 9.8 RLA 56 LRA GEAR MOTOR 120 V 5.6 FLA 1/2 HP FAN MOTOR 115 V 0.85FLA 1/15 HP OTHER 120 V 0.03A MAXIMUM FUSE SIZE 20 A MAX.

  • Page 7: F-1500Mwh

    F-1500MWH AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral for 115V) COMPRESSOR 240 V 9.8 RLA 56 LRA GEAR MOTOR 120 V 5.6 FLA 1/2 HP FAN MOTOR 115 V 0.51A OTHER 120 V 0.03A MAXIMUM FUSE SIZE 20 A MAX.

  • Page 8: F-1500Mwh-C

    F-1500MWH-C AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral for 115V) COMPRESSOR 240 V 9.8 RLA 56 LRA GEAR MOTOR 120 V 5.6 FLA 1/2 HP FAN MOTOR 115 V 0.51A OTHER 120 V 0.03A MAXIMUM FUSE SIZE 20 A MAX.

  • Page 9: F-1500Mrh

    F-1500MRH AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral for 115V) COMPRESSOR 240 V 9.8 RLA 56 LRA GEAR MOTOR 120 V 5.6 FLA 1/2 HP FAN MOTOR 115 V 0.51A OTHER 120 V 0.03A MAXIMUM FUSE SIZE 20 A MAX.

  • Page 10: F-1500Mrh-C

    F-1500MRH-C AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral for 115V) COMPRESSOR 240 V 9.8 RLA 56 LRA GEAR MOTOR 120 V 5.6 FLA 1/2 HP FAN MOTOR 115 V 0.51A OTHER 120 V 0.03A MAXIMUM FUSE SIZE 20 A MAX.

  • Page 11: Condenser Unit

    2. Condenser Unit URC-12F...
  • Page 12 SPECIFICATIONS MODEL: URC-12F AC SUPPLY VOLTAGE 115/60/1 (Connection to Icemaker) FAN MOTOR (QTY. 2) 115 V Total 2.6FLA 130W EXTERIOR DIMENSIONS (WxDxH) 35-11/16" x 15-11/16" x 21-15/16" (907.2 x 398 x 557.8 mm) DIMENSIONS INCLUDING LEGS (WxDxH) 37-13/16" x 18-1/8" x 36-15/16" (960 x 460 x 937.8 mm) EXTERIOR FINISH Galvanized Steel WEIGHT...

  • Page 13: General Information

    II. General Information 1. Construction F-1500MAH(-C) Water Supply Inlet Control Water Valve Chute Evaporator Fan Motor Condenser Gear Motor Compressor Drier Junction Box Bin Control Control Box Expansion Valve Flush Water Valve...

  • Page 14: F-1500Mwh(-C)

    F-1500MWH(-C) Water Supply Inlet Control Water Valve Chute Water Regulator Evaporator Condenser Gear Motor Compressor Drier Bin Control Junction Box Control Box Expansion Valve Flush Water Valve...

  • Page 15: F-1500Mrh(-C)

    F-1500MRH(-C) Water Supply Inlet Control Water Valve Chute Evaporator Receiver Tank Gear Motor Compressor Drier Junction Box Bin Control Control Box Expansion Valve Flush Water Valve...

  • Page 16: Control Box Layout

    2. Control Box Layout F-1500MAH(-C) A 12P Plug Housing L Starting Capacitor B Cam Timer M Timer Board C Relay N Rocker Switch D Transformer O 4P Plug Housing E Circuit Protect Relay P Toggle Switch F Water Control Relay...

  • Page 17: F-1500Mwh(-C), F-1500Mrh(-C)

    F-1500MWH(-C), F-1500MRH(-C) A 12P Plug Housing L Starting Capacitor B Cam Timer M Timer Board C 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 Housing...

  • Page 18: Technical Information

    III. Technical Information 1. Water Circuit and Refrigeration Circuit F-1500MAH(-C)

  • Page 19: F-1500Mwh(-C)

    F-1500MWH(-C)

  • Page 20: F-1500Mrh(-C)

    F-1500MRH(-C)

  • Page 21: Wiring Diagrams

    2. Wiring Diagrams F-1500MAH(-C)

  • Page 22: F-1500Mwh(-C)

    F-1500MWH(-C)

  • Page 23: F-1500Mrh(-C)

    F-1500MRH(-C)

  • Page 24: Sequence Of Electrical Circuit

    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 [b] When reservoir has been filled, gear motor starts immediately.
  • Page 26 [c] Compressor starts about 60 sec. after gear motor starts.
  • Page 27 [d] Bin control operates, and about 6 sec. later, compressor and gear motor stop simultaneously.
  • Page 28 [e] Low water (except water-cooled model).
  • Page 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 [g] 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 when the coil is energized.
  • Page 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: Timing Chart

    4. Timing Chart...

  • Page 37: Performance Data

    5. Performance Data F-1500MAH APPROXIMATE Ambient Water Temp. (F) ICE PRODUCTION Temp. (F) PER 24 HR. 1590 1514 1447 1382 1321 1262 1206 1170 1100 lbs./DAY kg/day 1051 1005 APPROXIMATE ELECTRIC 1820 1826 1832 CONSUMPTION 1838 1845 1851 1857 1863...

  • Page 38: F-1500Mah-C

    F-1500MAH-C APPROXIMATE Ambient Water Temp. (F) ICE PRODUCTION Temp. (F) PER 24 HR. 1300 1245 1194 1145 1099 1054 1011 lbs./DAY kg/day APPROXIMATE ELECTRIC 1820 1826 1832 CONSUMPTION 1838 1845 1851 1857 1863 1867 watts 1872 1876 1880 APPROXIMATE WATER CONSUMPTION PER 24 HR.

  • Page 39: F-1500Mwh

    F-1500MWH APPROXIMATE Ambient Water Temp. (F) ICE PRODUCTION Temp. (F) PER 24 HR. 1435 1390 1360 1335 1310 1285 1260 1245 1210 lbs./DAY kg/day 1185 1160 1075 APPROXIMATE ELECTRIC 1792 1780 1780 CONSUMPTION 1792 1780 1780 1792 1780 1780 watts 1792 1780 1780...

  • Page 40: F-1500Mwh-C

    F-1500MWH-C APPROXIMATE Ambient Water Temp. (F) ICE PRODUCTION Temp. (F) PER 24 HR. 1125 1075 1060 1050 1040 1025 1010 lbs./DAY kg/day APPROXIMATE ELECTRIC 1852 1756 1858 CONSUMPTION 1852 1756 1858 1852 1756 1858 watts 1852 1756 1858 APPROXIMATE WATER 2158 2639 1219...

  • Page 41: F-1500Mrh

    F-1500MRH APPROXIMATE Ambient Water Temp. (F) ICE PRODUCTION Temp. (F) PER 24 HR. 1585 1532 1484 1439 1394 1351 1309 1300 1230 lbs./DAY kg/day 1192 1155 1070 APPROXIMATE ELECTRIC 2010 2011 2011 CONSUMPTION 2012 2013 2014 2014 2015 2021 watts 2028 2034 2040...

  • Page 42: F-1500Mrh-C

    F-1500MRH-C APPROXIMATE Ambient Water Temp. (F) ICE PRODUCTION Temp. (F) PER 24 HR. 1335 1294 1258 1223 1188 1155 1123 1120 1060 lbs./DAY kg/day 1031 1002 APPROXIMATE ELECTRIC 2010 2011 2011 CONSUMPTION 2012 2013 2014 2014 2015 2021 watts 2028 2034 2040 APPROXIMATE WATER...

  • Page 43: Adjustment Of Components

    IV. Adjustment of Components 1. Adjustment of Water Regulating Valve (water-cooled model only) The water regulating valve or also called “water regulator” is factory-adjusted. No adjustment is required under normal use. Adjust the water regulator , if necessary, using the following procedures.

  • Page 44: Adjustment Of Flake Size

    2. Adjustment of Flake Size To adjust the flake size, change the number of the cutter heads on the top of the auger, 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).

  • Page 45: Service Diagnosis

    V. Service Diagnosis 1. No Ice Production PROBLEM POSSIBLE CAUSE REMEDY [1] The icemaker will not a) Power Supply 1. OFF position. 1. Move to ON position. start. 2. Loose connection. 2. Tighten. 3. Bad contacts. 3. Check for contintinuity and replace.
  • Page 46 PROBLEM POSSIBLE CAUSE REMEDY c) Gear Motor Relay 1. Coil winding opened. 1. Replace. 2. Bad contacts. 2. Check for continuity and replace. d) Control Timer 1. Broken. 1. Replace. (Printed Circuit Board) e) Gear Motor Protect 1. Coil winding opened. 1.
  • Page 47 PROBLEM POSSIBLE CAUSE REMEDY e) Compressor 1. Loose connections. 1. Tighten. 2. Motor winding opened 2. Replace. or grounded. 3. Motor Protector 3. Find out the cause of tripped. overheat or overcurrent. f) Power Supply 1. Circuit Ampacity too 1. Install a larger-sized low.

  • Page 48: Low Ice Production

    2. Low Ice Production PROBLEM POSSIBLE CAUSE REMEDY [1] Low ice production a) Refrigerant Line 1. Gas leaks. 1. See "1. [6] a) Refrigerant Line." 2. Refrigerant line 2. Replace the clogged clogged. component. 3. Overcharged. 3. Recharge. High-side Pressure Too 1.

  • Page 49: Other

    3. Other PROBLEM POSSIBLE CAUSE REMEDY [1] Abnormal noise a) Fan Motor 1. Bearing worn out. 1. Replace. 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.

  • Page 50: Removal And Replacement Of Components

    VI. Removal and Replacement of Components IMPORTANT 1. The Polyolester (POE) oils used in R-404A units can absorb moisture quickly. Therefore it is important to prevent moisture from entering the system when replacing or servicing parts. 2. Always install a new filter drier every time the sealed refrigeration system is opened.

  • Page 51: Brazing

    5) Disconnect the vacuum pump, and attach a refrigerant service cylinder to the high- side line. Remember to 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 Standard No. 700-88 be used.

  • Page 52: Removal And Replacement Of Compressor

    Note: All brazing-connections inside the bin are clear-paint coated. Sandpaper the brazing connections before unbrazing the components. Use a good abrasive cloth to remove coating. 3. Removal and Replacement of Compressor IMPORTANT Always install a new drier every time the sealed refrigeration system is opened.

  • Page 53: Removal And Replacement Of Drier

    12) Install the new drier. 13) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles. 14) Evacuate the system, and charge it with refrigerant. See the nameplate for the required refrigerant charge and type. 15) Connect the terminals to the compressor, and replace the terminal cover in its correct position.

  • Page 54: Removal And Replacement Of Expansion Valve

    5. Removal and Replacement of Expansion Valve IMPORTANT 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 replace the drier until after all other repairs or replacements have been made.

  • Page 55: Removal And Replacement Of Water Regulating Valve (Water-Cooled Models Only)

    6. Removal and Replacement of Water Regulating Valve (water-cooled models only) IMPORTANT Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repair or replacements have been made. 1) Turn off the power supply, remove the panels, and close the water supply line shut-off valve.

  • Page 56: Removal And Replacement Of Condensing Pressure Regulator (C.p.r.) (Remote Air-Cooled Model Only)

    7. Removal and Replacement of Condensing Pressure Regulator (C.P.R.) (remote air-cooled model only) IMPORTANT Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repairs or replacements have been made.

  • Page 57: Removal And Replacement Of Evaporator Assembly

    8. Removal and Replacement of Evaporator Assembly 1) Turn off the power supply. 2) Remove the panels. 3) Move the flush switch to the “FLUSH” position. 4) Turn on the power supply and drain out all water from the water line. 5) Turn off the power supply.
  • Page 58 IMPORTANT Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repair or replacements have been made. 14) Remove the bulb of the expansion valve. 15) Disconnect the brazing-connections of the expansion valve and the copper tube- low side from the evaporator, using brazing equipment.
  • Page 59 26) Assemble the removed parts in the reverse order of the above procedure. WARNING Be careful not to scratch the surface of the O-ring, or it may cause water leaks. Handle the mechanical seal with care not to scratch nor to contaminate its contact surface.
  • Page 60 Rubber O-ring Nylon Ring Bolt Dowel Pin Cutter Extruding Head Socket Head Cap Screw Strap Evaporator Socket Head Cap Screw Auger Mechanical Seal O-ring Housing Coupling - Spline Gear Motor...

  • Page 61: Removal And Replacement Of Fan Motor

    9. Removal and Replacement of Fan Motor 1) Turn off the power supply and remove the panels. 2) Remove the wire connectors from the fan motor leads. 3) Remove the fan motor bracket and fan motor. 4) Install the new fan motor. 5) Replace the panels in their correct position, and turn on the power supply.

  • Page 62: Removal And Replacement Of Flush Water Valve

    11. Removal and Replacement of Flush Water Valve 1) Turn off the power supply, remove the panels and close the water supply line shut-off valve. 2) Remove the clamp and disconnect the flush water valve. Note: Water may still remain inside the evaporator. Be sure to drain the water into the drain pan.

  • Page 63: Cleaning And Maintenance

    VII. Cleaning and Maintenance 1. Preparing the Icemaker for Long Storage IMPORTANT Ensure all components, fasteners and thumbscrews are securely in place after any maintenance or cleaning is done to the equipment. WARNING When shutting off the icemaker for an extended time, drain out all water from the water line and remove the ice from the storage bin.
  • Page 64 [Water-Cooled Models] 1) Turn off the power supply and wait for 3 minutes. 2) Turn on the 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.

  • Page 65: Cleaning And Sanitizing Instructions

    [a] Cleaning Solution Dilute 4.8 fl. oz. (142 ml) of recommended cleaner Hoshizaki “Scale Away” or “LIME-A-WAY” (Economics Laboratory, Inc.) with 0.8 gallons (3 l) of warm water. This is a minimum amount. Make more solution if necessary.

  • Page 66: [C] Sanitizing Solution

    9) Pour the cleaning solution over the extruding head until the evaporator assembly and the reservoir are filled 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.

  • Page 67: [E] Sanitizing Procedure - Final

    4) Pour the sanitizing solution over the extruding head until the evaporator assembly and the reservoir are filled and the solution starts to overflow into the drain pan. 5) Remove the thumbscrews securing the proximity switch to the chute assembly. 6) Remove the chute assembly from the icemaker.
  • Page 68 4) Turn off the power supply. 5) Remove the strap connecting the spout to the chute assembly. 6) Remove the thumbscrews securing the spout and lift it off. 7) Pour the sanitizing solution over the extruding head until the evaporator assembly and the reservoir are filled and the solution starts to overflow into the drain pan.

  • Page 69: Maintenance Instructions

    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 1-800-233-1940 in the USA. 1) Stainless Steel Exterior To prevent corrosion, wipe the exterior occasionally with a clean and soft cloth. Use a damp cloth containing a neutral cleaner to wipe off oil or dirt build up.
  • Page 70 4) Air Filter (air-cooled model only) A plastic mesh air filter 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 clogged, use warm water and a neutral cleaner to wash the filter.

This manual is also suitable for:

F-1500ma-cF-1500mwhF-1500mw-cF-1500mrhF-1500mr-c

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