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Hoshizaki FS-1001MLH Service Manual

Modular flaker
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73122
NO:
ISSUED: September 12, 2005
HOSHIZAKI
MODULAR FLAKER
MODEL
FS-1001MLH/-C
ALSO COVERS
HOSHIZAKI CONDENSING UNIT
MODEL SRC-10H
SERVICE MANUAL

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Summary of Contents for Hoshizaki FS-1001MLH

  • Page 1 73122 ISSUED: September 12, 2005 HOSHIZAKI MODULAR FLAKER MODEL FS-1001MLH/-C ALSO COVERS HOSHIZAKI CONDENSING UNIT MODEL SRC-10H SERVICE MANUAL...
  • Page 2 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.

  • Page 3: Table Of Contents

    This manual should be made available to the technician prior to service or maintenance. CONTENTS I. Specifications ........................5 A. Icemaker ........................5 1. FS-1001MLH ......................5 2. FS-1001MLH-C ...................... 6 B. Condensing Unit ......................7 1. SRC-10H ........................ 7 II. General Information ......................8 A.
  • Page 4 IV. Service Diagnosis ......................32 A. No Ice Production ...................... 32 1. Icemaker ....................... 32 2. Condensing Unit ....................34 B. Low Ice Production ....................34 C. Other .......................... 35 V. Removal and Replacement of Components ..............36 A. Service for Refrigerant Lines ..................36 1.

  • Page 5: Specifications

    I. Specifications A. Icemaker 1. FS-1001MLH No Data Available We reserve the right to make changes in specifications and design without prior notice.

  • Page 6: Fs-1001Mlh-C

    Approx. 80%, Ice (90/70°F, Conductivity 200 µs/cm) APPROXIMATE STORAGE CAPACITY ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F ELECTRIC W (kWH/100 lbs.) 1745 (5.96) 1713 (4.94) FS-1001MLH-C & SRC-10H ELECTRIC W (kWH/100 lbs.) 331 (1.13) 345 (1.00) FS-1001MLH-C ONLY POTABLE WATER 84 (12) 100 (12) gal./24HR (gal./100 lbs.)

  • Page 7: Condensing Unit

    B. Condensing Unit 1. SRC-10H AC SUPPLY VOLTAGE 208-230/60/1 (3 WIRE W/ NEUTRAL FOR 115V) COMPRESSOR 208-230 9.6 RLA 46 LRA FAN MOTOR 120 V OTHER 120 V 0.5 A MAXIMUM FUSE SIZE 20 A MAX. HACR BREAKER (USA ONLY) 20 A MAX.

  • Page 8: General Information

    II. General Information A. Dimensions Unit = inches [mm] 1. Icemaker a) FS-1001MLH/-C...

  • Page 9: Condensing Unit

    2. Condensing Unit a) SRC-10H Unit = [inches] mm...

  • Page 10: Construction

    B. Construction 1. Icemaker a) FS-1001MLH/-C Water Supply Inlet Control Water Valve Bin Control Power Supply Cord Control Box Ice Chute Evaporator Expansion Valve Gear Motor Beam Sensor Drier Flush Water Valve...

  • Page 11: Condensing Unit

    2. Condensing Unit a) SRC-10H Condenser Pressure Regulator Condenser Fan Motor Receiver Tank Control Box Compressor...

  • Page 12: Control Box Layout

    C. Control Box Layout 1. Icemaker a) FS-1001MLH/-C Capacitor Transformer Flush Switch Timer Power Switch Water Control Relay Fuse Gear Motor (Timer Board 1A) Relay Fuse Connector (Gear Motor 3A) Timer Board Time Delay Relay Connector...

  • Page 13: Condensing Unit

    2. Condensing Unit a) SRC-10H Pressure Switch Low Pressure Switch 2 (Safety) Low Pressure Switch 1 (Control) Cut-out 3 psig Cut-out 9 psig Cut-in 6 psig (manual reset) Cut-in 29 psig Starter (Relay) Magnetic Contactor Capacitor Capacitor - Start Capacitor - Run...

  • Page 14: Technical Information

    III. Technical Information A. Water Circuit and Refrigeration Circuit 1. Icemaker a) FS-1001MLH/-C...

  • Page 15: Condensing Unit

    2. Condensing Unit a) SRC-10H...

  • Page 16: Wiring Diagram

    B. Wiring Diagram 1. Icemaker a) FS-1001MLH/-C...

  • Page 17: Condensing Unit

    2. Condensing Unit a) SRC-10H...

  • Page 18: Sequence Of Electrical Circuit

    C. Sequence of Electrical Circuit 1. Icemaker 1. When the power switch is moved to the “ON” position and the flush switch to the “ICE” position, water starts to be supplied to the reservoir.
  • Page 19 2. When the reservoir has been filled, the gear motor starts immediately.
  • Page 20 3. The pumpdown solenoid valve energizes about 60 sec. after the gear motor starts.
  • Page 21 4a. The bin control sensor operates and the pumpdown solenoid deenergizes after a time delay set by the user. 60 seconds after that the gear motor stops.
  • Page 22 4b. Should the bin control sensor fail and the bin control switch operate, the pumpdown solenoid valve and gear motor will stop simultaneously 6 sec. after operation.
  • Page 23 5. Low water.
  • Page 24 6. When the flush switch is moved to the “FLUSH” position, the flush water valve opens and flushes the reservoir and evaporator.
  • Page 25 7. When the flush timer operates (for 15 min. every 12 hours).
  • Page 26 8. If the gear motor fuse (3A) blows, the solenoid valve and gear motor will turn off immediately.

  • Page 27: Timing Chart

    D. Timing Chart Bin Control Switch Upper Water Level Lower Bottom Upper Float Switch Lower Water Control Relay Control Water Valve Flush Timer 1 - 2 2 - 3 Flush Switch Flush Flush Water Valve 8. Bin Control 1 sec 1 sec 6 sec Gear Motor...
  • Page 28 Low Water/Bin Control Sensor Flush Timer Upper Water Level Lower Bottom Upper Float Switch Lower Water Control Relay Control Water Valve Flush Timer 1 - 2 2 - 3 21 min every 1 2 hr Flush Switch Flush Flush Water Valve 8.
  • Page 29 Flush Switch Pressure Switch Flush Upper Water Level Lower Bottom Upper Float Switch Lower Water Control Relay Control Water Valve Flush Timer 1 - 2 2 - 3 Flush Switch Flush Flush Water Valve 8. Bin Control 1 50 sec 1 sec 1 sec Gear Motor...

  • Page 30: Performance Data

    E. Performance Data 1. FS-1001MLH No Data Available We reserve the right to make changes in specifications and design without prior notice.

  • Page 31: Fs-1001Mlh-C

    2. FS-1001MLH-C Performance Data: APPROXIMATE Ambient Water Temp. (F) ICE PRODUCTION Temp. (F) PER 24 HR. *832 *703 lbs./DAY ( l/day) *600 APPROXIMATE ELECTRIC 1713 1717 1722 CONSUMPTION 1727 1731 1736 1740 1745 1760 watts 1775 1789 1804 APPROXIMATE WATER *100 CONSUMPTION PER 24 HR.

  • Page 32: Service Diagnosis

    IV. Service Diagnosis A. No Ice Production 1. Icemaker 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 continuity and replace.
  • Page 33 Problem Possible Cause Remedy Water has been a) Water Control Relay 1. Bad contacts. 1. Check for continuity and supplied, but the replace. icemaker will not b) Bin Control 1. Bad contacts. 1. Check for continuity and start. replace. 2. Actuator does not 2.

  • Page 34: Condensing Unit

    Problem Possible Cause Remedy [7] Continued from b) Condensing Unit 1. Not functioning 1. Proceed to "2. previous page. properly. Condensing Unit." 2. Condensing Unit Problem Possible Cause Remedy Condensing unit does Power Supply 1. OFF position. 1. Turn supply on. not start.

  • Page 35: Other

    C. Other Problem Possible Cause Remedy [1] Abnormal noise. a) Refrigerant Lines 1. Rub or touch lines or 1. Replace. other surfaces. b) Gear Motor (Ice 1. Bearing or gear worn 1. Replace. Making) out / damaged. c) Evaporator 1. Too much pressure 1.

  • Page 36: Removal And Replacement Of Components

    V. Removal and Replacement of Components IMPORTANT Ensure all components, fasteners and thumbscrews are securely in place after the equipment is serviced. 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.

  • Page 37: B) Partial Evacuation With Pumpdown

    Remember to loosen the connection and purge the air from the hose. See the rating label on the control box in the icemaker for the required refrigerant charge. Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard No.

  • Page 38: Brazing

    4) Turn the power supply to the condensing unit back on. 5) Once the automatic pumpdown cycle is complete and the condensing unit shuts itself down, turn off the power supply to the condensing unit. 6) Close the suction line shut-off valve by rotating the valve stem clockwise until it is fully seated.

  • Page 39: Service For Condensing Unit

    C. Service for Condensing Unit Note: 1. The condensing unit is wired independently from the icemaker. The compressor and condenser fan motor energize when the suction line primary low pressure switch closes. This switch has a cut-out point of 9 psig and a cut-in point of 29 psig. Because of the independent wiring, the condensing unit may periodically energize for short periods of time in order to keep suction pressures from building.

  • Page 40: Removal And Replacement Of Condensing Pressure Regulator (C

    8) Sandpaper the discharge, suction and access pipes. 9) Place the compressor in position and secure it using the bolts. 10) Remove plugs from the discharge, suction and access pipes. 11) Braze the access, suction and discharge lines (Do not change this order), while purging with nitrogen gas flowing at a pressure of 3 - 4 psig.

  • Page 41: Removal And Replacement Of Drier

    7) Install the new drier in the icemaker. 8) Check for leaks using nitrogen gas (140 psig) and soap bubbles. 9) Evacuate the system. Charge it with refrigerant. See the rating label on the control box in the icemaker. 10) Replace the panels in their correct position.

  • Page 42: Removal And Replacement Of Expansion Valve

    E. 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 43: Removal And Replacement Of Evaporator Assembly

    F. 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 44 Evaporator Note: Skip the following steps 13) through 15) when the evaporator does not need replacement. 13) See chapter V, section A. 2. b) and perform the partial evacuation procedure. 14) Recover the refrigerant and store it in an approved container, if required by an applicable law.
  • Page 45 Gear Motor 24) Remove the coupling-spline on the gear motor shaft. 25) Remove the barrier on the top of the gear motor. 26) Remove the three socket head cap screws securing the gear motor. 27) 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.
  • Page 46 Rubber O-ring Nylon Ring Bolt Dowel Pin Cutter Washer Extruding Head Heater with Spring Washer Socket Head Cap Screw Evaporator Split Lock Washer Socket Head Cap Screw Auger Mechanical Seal O-ring Hex Head Bolt Spring Washer Washer Housing Truss Head Screw Coupling - Spline Barrier - Gear Motor...

  • Page 47: Removal And Replacement Of Control Water Valve

    G. Removal and Replacement of Control Water Valve 1) Turn 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 inlets and remove the control water valve. Do not lose the packings inside the fitting nut.

  • Page 48: Removal And Replacement Of Flush Water Valve

    H. 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 49: Cleaning And Maintenance

    VI. Cleaning and Maintenance IMPORTANT Ensure all components, fasteners and thumbscrews are securely in place after any maintenance or cleaning is done to the equipment. A. Preparing the Icemaker for Long Storage 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 50: Cleaning And Sanitizing Instructions

    1. 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 51 9) Replace the control water valve in its correct position. 10) Remove the strap connecting the spout to the chute assembly. 11) Remove the thumbscrews securing the spout and lift it off. 12) 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.

  • Page 52: Sanitizing Solution

    3. Sanitizing Solution Dilute 2.5 fl. oz. (74 ml or 5 tbs) of IMS-II Sanitizer or a 5.25% sodium hypochlorite solution (chlorine bleach) with 5 gallons (19 l) of warm water. IMPORTANT For safety and maximum effectiveness, use the solution immediately after dilution.

  • Page 53: Sanitizing Procedure - Final

    14) 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. 15) Move the flush switch to the “ICE”...
  • Page 54 16) When the gear motor starts, remove the front panel and turn off the power supply. 17) Drain out all water from the water line. See 2) and 3). 18) Move the flush switch to the “ICE” position and run the icemaker. 19) Turn off the power supply after 30 minutes.

  • Page 55: 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.

This manual is also suitable for:

Fs-1001mlcFs-1001mlh-cSrc-10h

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