Hoshizaki FM-170EE-HC Service Manual
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Hoshizaki FM-170EE-HC Service Manual

Modular ice maker
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MODULAR ICE MAKER
MODEL
HOSHIZAKI
FM-170EE-HC
FM-170EE-HCN
FM-170EE-50-HC
FM-170EE-50-HCN
SERVICE MANUAL
NO.
E2EB-814
ISSUED:
AUG. 21, 2010
REVISED:

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  • Page 1 E2EB-814 ISSUED: AUG. 21, 2010 REVISED: HOSHIZAKI MODULAR ICE MAKER FM-170EE-HC MODEL FM-170EE-HCN FM-170EE-50-HC FM-170EE-50-HCN SERVICE MANUAL...

  • Page 2: Table Of Contents

    3. TIMING CHART ----------------------------------------------------------------------------------- 30 [a] PRINCIPLE OF OPERATION ------------------------------------------------------------- 30 [b] PROTECTORS ------------------------------------------------------------------------------- 30 4. PERFORMANCE DATA ------------------------------------------------------------------------- 32 [a] FM-170EE-HC, FM-170EE-50-HC ------------------------------------------------------- 32 [b] FM-170EE-HCN, FM-170EE-50-HCN -------------------------------------------------- 33 VII. SERVICE DIAGNOSIS --------------------------------------------------------------------------- 34 1. NO ICE PRODUCTION ------------------------------------------------------------------------- 34...
  • Page 3 2. LOW ICE PRODUCTION ----------------------------------------------------------------------- 36 3. OTHERS -------------------------------------------------------------------------------------------- 36 VIII. REMOVAL AND REPLACEMENT OF COMPONENTS -------------------------------- 38 1. REFRIGERATION CIRCUIT ------------------------------------------------------------------- 38 [a] APPLICABLE PARTS ----------------------------------------------------------------------- 38 [b] SERVICE INSTRUCTIONS --------------------------------------------------------------- 38 [c] REFRIGERANT ------------------------------------------------------------------------------- 38 [d] COMPRESSOR ------------------------------------------------------------------------------ 39 [e] EVAPORATOR CASING ------------------------------------------------------------------- 39 [f] CONDENSER ---------------------------------------------------------------------------------- 39 [g] CONDENSER COOLING FAN MOTOR ----------------------------------------------- 39...

  • Page 4: Specifications

    I. SPECIFICATIONS 1. DIMENSIONS/CONNECTIONS [a] FM-170EE-HC, FM-170EE-HCN...

  • Page 5: [B] Fm-170Ee-50-Hc, Fm-170Ee-50-Hcn

    [b] FM-170EE-50-HC, FM-170EE-50-HCN...

  • Page 6: Specifications

    2. SPECIFICATIONS [a] FM-170EE-HC...

  • Page 7: [B] Fm-170Ee-Hcn

    [b] FM-170EE-HCN...

  • Page 8: [C] Fm-170Ee-50

    [c] FM-170EE-50-HC...

  • Page 9: [D] Fm-170Ee-50-Hcn

    [d] FM-170EE-50-HCN...

  • Page 10: General Information

    II. GENERAL INFORMATION 1. CONSTRUCTION Self-contained flaker models FM-170EE-HC, FM-170EE-HCN, FM-170EE-50-HC and FM-170EE-50-HCN include Water Supply, Evaporator, Condensing and Control Assemblies. Top Panel Door Front Panel (Left) Power Supply Cord Front Cover Louver Air Filter Bin Control Switch Spout Drainboard...
  • Page 11 ICE MAKING UNIT [FM-170EE-HC, FM-170EE-50-HC]...
  • Page 12 ICE MAKING UNIT [FM-170EE-HCN, FM-170EE-50-HCN]...

  • Page 13: Operation - How It Works

    2. OPERATION - How it works Potable water flows from the external supply tap and enters the water inlet on the machine, passes through an electrically operated Water Valve before flowing into the Reservoir Tank. From the Tank, water flows by gravity into the bottom of the Evaporator to completely surround the Auger and fill the Evaporator with water to the same level as in the Reservoir Tank.

  • Page 14: Timer Board

    3. TIMER BOARD [a] SOLID-STATE CONTROL 1) An exclusive HOSHIZAKI solid-state control is employed. 2) A Printed Circuit Board (hereafter called “Timer Board”) includes a stable and high- quality control system. 3) No adjustment is required. [b] TIMER BOARD CAUTION 1.

  • Page 15: [C] Sequence

    Fig. 1 [c] SEQUENCE Fig. 2...
  • Page 16 CONTROL (CTL) PROTECT (PRT) X1 RELAY (GEAR MOTOR) X2 RELAY (COMPRESSOR) PART CODE 437305-02 MODEL H2AA144C02 RATING 24 VAC 50/60Hz 60 ± 15 sec. 90 ± 22 sec. 150 ± 45 sec. Max. 1 sec. Max. 0.25 sec. Max. 1 sec. Fig.
  • Page 17 Functions of Terminals 1) Terminals 1, 2 Power supply AC 24V. 2) Terminals 3, 4 Control X (GM) and X (CM) Relays. When closed, energize X (GM) in 1 sec. and X (CM) in 60 sec. When opened, de-energize X (GM) in 150 sec.

  • Page 18: Installation Instructions

    III. INSTALLATION INSTRUCTIONS WARNING The installation must be carried out by qualified personnel, in accordance with current regulations, according to the manufacturer’s instructions. 1. UNPACKING WARNING Children should not be allowed in reach of the packaging elements (plastic bags and expanded polystyrene) as they are potential sources of danger. CAUTION 1.

  • Page 19: Location

    3) Open the Door, take out the package containing accessories, and check the contents: a) Installation Kit Inlet Hose Outlet Hose Adjustable Leg b) Scoop 4) Remove the Front Panel (Left) and Top Panel. See Fig. 5. 5) Remove the protective plastic film from the panels. If the icemaker is exposed to the sun or to heat, remove the film after the icemaker cools.

  • Page 20: Installation

    4. Allow 15 cm clearance at rear, sides and top for proper air circulation and ease of maintenance and/or service should they be required. 5. This appliance is not suitable for installation in an area where a water jet could be used and where dripping is not allowed. 6.
  • Page 21 The correct replacement for the detachable fuse cover is identifiable from the manufacturer’s reference number stamped on the plug. Supply of replacement fuse covers can be obtained from Hoshizaki Parts/Service Centres. Fuses should be rated at 13A and approved to BS 1362.

  • Page 22: Water Supply And Drain Connections

    5. WATER SUPPLY AND DRAIN CONNECTIONS * The connections to the mains water supply must be made in accordance with the countries’ current requirements of the Water Supply or Water Fittings Regulations. * Only potable water should be used for the icemaker. * Water supply pressure should be minimum 0.5 bar and maximum 8 bar.

  • Page 23: Operating Instructions

    IV. OPERATING INSTRUCTIONS WARNING 1. This icemaker is designed to produce and store edible ice. To keep the icemaker hygienic: * Wash your hands before removing ice. Use the Plastic Scoop provided (accessory). * The Storage Bin is for ice use only. Do not store anything else in the Bin.

  • Page 24: Preparing The Icemaker For Long Storage

    Circuit Motor Operation Breaker (6A) Protector (3A) Switch Control Box Front Panel (Left) Control Box Condenser Fig. 8 Fig. 9 3) Replace the Front Panel (Left) and Top Panel in their correct position. 4) Open the water supply tap. 5) Connect the power supply and energise. 6) The following should occur in sequence: a) Water Reservoir will fill.

  • Page 25: Maintenance

    2) Run the icemaker (for about 10 minutes) until the Compressor and the Gear Motor stop automatically. 3) Unplug the icemaker and remove the Front Panel (Left). 4) Remove the Inlet Hose from the water tap, and drain the Hose. 5) Unhook the Drain Hose (Water Level Gauge).
  • Page 26 1) Either mix 3 litres of water with 11 ml of 5.25% sodium hypochlorite solution in a suitable container, or the recommended Hoshizaki sanitiser as directed. 2) Soak the Scoop in the solution for more than 3 minutes. Rinse thoroughly, and shake to remove surplus liquid.

  • Page 27: Cleaning Of Water System

    2. CLEANING OF WATER SYSTEM WARNING 1. HOSHIZAKI recommends cleaning this unit at least twice a year. More frequent cleaning, however, may be required in some existing water conditions. 2. Always wear rubber gloves, eye protectors, apron, etc. for safe handling of the cleaner and sanitiser.
  • Page 28 3) Remove all ice from the Storage Bin to avoid contamination by the cleaner. 4) Remove the Front Panel (Left) and the Top Panel. 5) Unhook the Drain Hose and drain the water system. 6) Refit the Drain Hose in its correct position. 7) Remove the Control Water Valve by releasing the Fitting Nut.
  • Page 29 <STEP 3> Note: Sanitising should always be completed after cleaning or alternately as an individual procedure if conditions exist to make it necessary. Use 2.8 lit. of the sanitizing solution to sanitize the icemaker. 21) Close the water supply tap. 22) Follow items 4) to 20) to complete sanitisation of the water system.
  • Page 30 26) Immerse these parts in the sanitizing solution for about 15 minutes. 27) Rinse these parts thoroughtly with clean water. IMPORTANT If the solution is left on these parts, they will corrode. 28) Refit the removed parts in reverse order. 29) Close the water supply tap.

  • Page 31: Technical Information

    VI. TECHNICAL INFORMATION 1. WATER CIRCUIT AND REFRIGERANT CIRCUIT...

  • Page 32: Wiring Diagram

    2. WIRING DIAGRAM...

  • Page 33: Timing Chart

    3. TIMING CHART [a] PRINCIPLE OF OPERATION When the Operation Switch is moved to the “ON” position, water is supplied through the Control Water Valve. This cycle continues until the Reservoir is full and the Float Switch signals to close the Water Valve. The Gear Motor will then start in 1 second and the Compressor in 60 seconds.
  • Page 34 PRESSURE SWITCH MOTOR PROTECTOR POWER ON RESET UPPER Float Switch LOWER Control Water Valve Pressure Switch Gear Motor Fan Motor Compressor 1sec 0.25sec 1sec 60sec 60sec Fig. 14 3) Low Water Control The icemaker will stop when the water level in the Reservoir falls below the lower float level and is not refilled to the upper float level within 90 seconds due to either an interruption in the water supply or low water pressure.

  • Page 35: Performance Data

    4. PERFORMANCE DATA [a] FM-170EE-HC, FM-170EE-50-HC 10/10 21/15 32/21 Ambient Temp Water Temp (°C） 10/10 21/15 32/21 Ambient Temp Water Temp (°C） Suction Pressure(bar) Head Pressure(bar) 10/10 21/15 32/21 Ambient Temp Water Temp (°C）...

  • Page 36: [B] Fm-170Ee-Hcn, Fm-170Ee-50-Hcn

    [b] FM-170EE-HCN, FM-170EE-50-HCN 10/10 21/15 32/21 Ambient Temp Water Temp (°C） 10/10 21/15 32/21 Ambient Temp Water Temp (°C） Suction Pressure(bar) Head Pressure(bar) 10/10 21/15 32/21 Ambient Temp Water Temp (°C）...

  • Page 37: Service Diagnosis

    VII. SERVICE DIAGNOSIS 1. NO ICE PRODUCTION PROBLEM CHECK POSSIBLE CAUSE REMEDY [1] The icemaker a) Power Supply 1. OFF position. 1. Move to ON position. will not start. 2. Loose connections. 2. Tighten. 3. Bad contacts. 3. Check for continuity and replace.
  • Page 38 PROBLEM CHECK POSSIBLE CAUSE REMEDY [3] (Continued) e) Gear Motor 1. Coil winding opened. 1. Replace. Protect Relay 2. Bad contacts. 2. Check for continuity and replace. f) Pressure Switch 1. Dirty Air Filter or 1. Clean. Condenser. 2. Ambient temperature 2.

  • Page 39: Low Ice Production

    2. LOW ICE PRODUCTION PROBLEM CHECK POSSIBLE CAUSE REMEDY [1] Low ice a) Refrigerant Line 1. Gas leaks. 1. See 1 - [5] - a). production. 2. Refrigerant line 2. Replace the clogged clogged. component. 3. Overcharged. 3. Recharge. b) High-side 1.
  • Page 40 PROBLEM CHECK POSSIBLE CAUSE REMEDY [2] Overflow from a) Water Supply 1. Water pressure too 1. Install a Pressure Reservoir high. Reducing Valve. (Water does b) Water Valve 1. Diaphragm does not 1. Clean or replace. not stop.) close. c) Float Switch 1.

  • Page 41: Removal And Replacement Of Components

    If any component of the refrigeration circuit requires removal or replacement, please contact the manufacturer: HOSHIZAKI EUROPE LIMITED Telford 70 Stafford Park 7, Telford, Shropshire TF3 3BQ UK Tel: +44 (0)1952-291777...

  • Page 42: [D] Compressor

    [d] COMPRESSOR The Compressor absorbs the low-pressure refrigerant gas vaporized in the Evaporator (to reduce the pressure inside the Evaporator), compresses the refrigerant into high-temperature high-pressure gas, and sends it out to the Condenser. The hermetic-type Compressor is efficient in refrigeration, and the refrigeration circuit is designed to endure long hours of operation.

  • Page 43: [I] Thermostatic Expansion Valve

    If any component of the evaporator assembly requires removal or replacement, please contact the manufacturer: HOSHIZAKI EUROPE LIMITED Telford 70 Stafford Park 7, Telford, Shropshire TF3 3BQ UK Tel: +44 (0)1952-291777...
  • Page 44 Socket Head FM-170EE-HC Cap Screw FM-170EE-50-HC FM-170EE-HCN FM-170EE-50-HCN Cutter Evaporator Extruding Head Socket Head Cap Screw with Washer Auger O-ring Lower Bearing Ring Coupling - Spline Mechanical Seal Gear Motor Fig. 16...

  • Page 45: Fan Motor

    3. FAN MOTOR 1) Unplug the icemaker. 2) Remove the Top Panel, the Front Panel (Left) and the Left Side Panel. 3) Remove the wire connectors from the Fan Motor leads. 4) Remove the Fan Motor Bracket and the Fan Motor. 5) Install the new Fan Motor onto the Bracket, and re-fix the Fan Blade.

  • Page 46: Control Water Valve

    5. CONTROL WATER VALVE 1) Unplug the icemaker. 2) Close the water supply tap. 3) Remove the Inlet Hose from the water tap, and drain the Hose. 4) Remove the Top Panel and the Front Panel (Left). 5) Disconnect the Terminals from the Control Water Valve. 6) Loosen the Fitting Nut on the Control Water Valve Inlet, and remove the Control Water Valve.

This manual is also suitable for:

Fm-170ee-hcnFm-170ee-50-hcFm-170ee-50-hcn

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