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gas when the rotation slows down. Shuts down the icemaker when the rotation slows down
further.

Thermal Protector
Provided on the motor coil. Operates when the motor temperature rises. The protector is
auto-reset, but the controller shuts down the icemaker. Press the Reset Button to restart.

The above protectors indicate “E3”, “Ed” or “EE”. When “Ed” or “EE” appears ten times,
“EJ” will be displayed. The Evaporator has been frequently overloaded. This could result in
an excessively worn Gear or a broken screw on the Housing.

3) Fan Motor

The auto-reset Fuse attached to the motor coil will operate when the motor temperature
rises. For the air-cooled models, the High Pressure Switch will turn on and off the icemaker.
“E4” may appear in the Display Window.

4) Overcurrent Protector

Trips to shut down the icemaker in case of over current conditions. Manual-reset.

5) Chute Switch

If the Bin Control Switch fails to operate, the Spout and Chute will be clogged with ice and
disconnected to spill ice. The Chute Switch is installed to prevent this trouble. “EL” will
appear in the Display Window when the Chute Switch operates.

6) Low Water

In case of low water or clogged water supply circuit, the icemaker will shut down unless the
Float Switch trips at the upper float level within 5 minutes after tripping at the lower float
level. The Water Valve will open and close every 5 minutes until the Float Switch trips at the
upper float level. The record of low water is indicated by the code “c1” when the Option and
Stop Buttons are pressed in servicing.

7) Ice Production Timer

Detects reduction in ice production capacity unless the Float Switch trips at the lower float
level within 30 minutes for the first freeze cycle and 15 minutes for the second and
subsequent cycles after tripping at the upper float level. “E1” will appear in the Display
Window.

8) Water Leak

Detects a water leak if the water level goes down with the Compressor out of operation
after the first water supply cycle (i.e. no ice production). “E0” will appear in the Display
Window.

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Содержание FM-300AFE-HC

Страница 1: ...NO F048 796 ISSUED MAR 1 2010 REVISED MAY 14 2010 SERVICE MANUAL HOSHIZAKI MODULAR ICE MAKER MODEL FM 481AGE HC FM 481AGE HCN FM 300AFE HC FM 300AFE HCN ...

Страница 2: ...ant circuit unless qualified competent and authorised to do so 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 Fax 44 0 1952 292777 ...

Страница 3: ...M 300AFE HC FM 300AFE HCN 11 II MAINTENANCE AND CLEANING INSTRUCTIONS 12 1 EXTRUDING HEAD HOUSING BEARING AUGER BEARING 12 2 MECHANICAL SEAL 12 3 GEAR MOTOR 13 4 CONDENSER 13 5 AIR FILTER 13 6 WATER VALVE 14 7 CLEANING OF WATER SYSTEM 15 8 PERIODICAL CLEANING 17 III TECHNICAL INFORMATION 18 1 WATER CIRCUIT AND REFRIGERANT CIRCUIT 18 a FM 481AGE HC FM 481AGE HCN 18 b FM 300AFE HC FM 300AFE HCN 19 2...

Страница 4: ...i THERMOSTATIC EXPANSION VALVE 29 6 ELECTRIC CIRCUIT 30 a BASIC OPERATION 30 b TIMING CHART 30 c SEQUENCE 33 d OPERATION BOARD 45 e CONTROLLER BOARD 45 f SURGE ABSORBER 46 g CAPACITOR XY FILTER 46 h BIN CONTROL SWITCH 46 i CHUTE SWITCH 47 j DEICING HEATER BELT HEATER 47 7 OPERATION BOARD 48 a USER OPERATION 48 b SERVICE OPERATION 48 8 PROTECTORS 52 a INDICATION 52 b PROTECTORS 52 9 ERROR CODES 55 ...

Страница 5: ...refrigeration circuit This will temporarily reduce the ice production to avoid the overload condition c OVERLOAD ERROR When the above protection fails to evade the overload condition and the Gear Motor has a high current and a low rotation speed the icemaker will shut down for protection The icemaking mechanism will have extensive damage if this condition is repeated ten times In this case the ice...

Страница 6: ...ke ice and nugget ice were available by replacing the Extruding Head and Cutter With the new models not only the Extruding Head and Cutter but also the refrigeration circuit is different between the flake ice model and nugget ice model To ensure the proper capacity and prevent a trouble with excessive ice production do not replace the Extruding Head and Cutter to change the ice type ...

Страница 7: ...3 2 DIMENSIONS CONNECTIONS a FM 481AGE HC FM 481AGE HCN ...

Страница 8: ...4 b FM 300AFE HC FM 300AFE HCN ...

Страница 9: ...5 3 SPECIFICATIONS a FM 481AGE HC ...

Страница 10: ...6 b FM 481AGE HCN ...

Страница 11: ...7 c FM 300AFE HC ...

Страница 12: ...8 d FM 300AFE HCN ...

Страница 13: ...0AFE HCN include Water Supply Evaporator Compressor Condenser and Control Assemblies As the unit is not equipped with an Ice Storage Bin this must be purchased separately as optional extra a FM 481AGE HC FM 481AGE HCN Control Box Compressor Reservoir Gear Motor Evaporator Flush Water Valve ...

Страница 14: ...10 Drier Ice Chute Pressure Switch ...

Страница 15: ...11 b FM 300AFE HC FM 300AFE HCN Control Box Compressor Reservoir Drier Ice Chute Gear Motor Pressure Switch Evaporator Flush Water Valve ...

Страница 16: ...itions but normally the Bearings should be checked for wear after a total of 8 000 10 000 hour operation from installation date Note The clearance between the Auger blades and the Evaporator interior is 0 4 0 5 mm If the Bearings and rotating parts are worn out to create a larger clearance the Evaporator interior may be damaged The diameters differ by 0 8 1 0 mm If the Auger surfaces against which...

Страница 17: ...Condenser once a year and clean if required by using a brush or vacuum cleaner More frequent cleaning may be required depending on the location of the icemaker 5 AIR FILTER Plastic mesh Air Filters remove dirt or dust from the air and keep the Condenser from getting clogged If the Filters get clogged the icemaker s performance will be reduced Remove and clean the Air Filters at least twice per mon...

Страница 18: ...pply tap 3 Disconnect the Inlet Hose from the Water Valve 4 Remove the Mesh Filter from the Water Valve 5 Clean the Mesh using a brush 6 Replace the Mesh and Inlet Hose in their correct positions 7 Open the water supply tap 8 Connect the power source 9 Check for leaks ...

Страница 19: ... to shorten cleaning time 6 Wipe off any splashed or spilt cleaner sanitiser immediately 7 Do not use any ammonia type cleaners on any part of the icemaker STEP 1 Dilute the solutions with water as follows Cleaning solution Nickel Safe Ice Machine Cleaner by The Rectorseal Corporation or similar Prepare approximately 3 L of solution as directed on the container Sanitising solution 30 mL of 5 25 so...

Страница 20: ...further 20 minutes Open the Access Flap and press the Stop Button 12 Allow time for the Gear Motor to stop and the water system to drain 13 Unplug the icemaker 14 Refit the Top and Front Panels Plug in the icemaker 15 Allow the icemaker to make ice for approximately 10 minutes 16 Pour warm water into the Storage Bin to melt any ice down the drain Note 1 If the machine has heavy deposits of scale r...

Страница 21: ...e thoroughly with a clean cloth and fresh water 3 Mix 5 litres of water with 18 mL of 5 25 sodium hypochlorite solution in a suitable container or the recommended Hoshizaki sanitiser as directed 4 Soak a clean sponge or cloth with the solution and wipe all the surfaces of the Bin Liner Ice Deflector and Door inner surface 5 Rinse thoroughly with fresh water and a clean cloth to wipe off the soluti...

Страница 22: ...18 III TECHNICAL INFORMATION 1 WATER CIRCUIT AND REFRIGERANT CIRCUIT a FM 481AGE HC FM 481AGE HCN Pressure Switch Cut out 22 6 1 5 0 bar Cut in 15 7 1 5 bar ...

Страница 23: ...19 b FM 300AFE HC FM 300AFE HCN Pressure Switch Cut out 22 6 1 5 0 bar Cut in 15 7 1 5 bar ...

Страница 24: ...20 2 WIRING DIAGRAM a WIRING DIAGRAM FM 481AGE HC FM 481AGE HCN ...

Страница 25: ...21 FM 300AFE HC FM 300AFE HCN ...

Страница 26: ...22 b CONTROL BOX LAYOUT FM 481AGE HC FM 481AGE HCN ...

Страница 27: ...23 FM 300AFE HC FM 300AFE HCN ...

Страница 28: ... is located on top of the Evaporator The Deicing Heater Belt Heater around the top of the cylinder functions to reduce the load on the Gear Motor FM 481AGE HCN FM 300AFE HCN only See 5 REFRIGERATION CIRCUIT for further details b AUGER The stainless steel Auger is supported by the upper and lower Bearings of the Evaporator and slowly rotated by the Gear Motor while scraping off the ice forming on t...

Страница 29: ...ector trips the Controller Board will stop the Gear Motor The Protector can be reset by the Reset Button on the Operation Board The Thermal Protector trips when the Gear Motor mechanism is overloaded or when excessively high or low voltage is applied on the Gear Motor The electrical capacity must be increased if a large current flows through the surrounding equipment h BELT HEATER FM 481AGE HCN FM...

Страница 30: ...will automatically restart icemaking operation when the proper water level is resumed If the Float Switch trips at the upper float level on startup and trips at the lower float level request for water supply before the Compressor starts the icemaker will display E0 for a water leak error and shut down If the Float Switch trips at the upper float level and does not trip at the lower float level the...

Страница 31: ...IONS In winter the water circuit must be completely drained out or otherwise protected to prevent freeze up and damage before shutting down the icemaker at night 1 Close the Water Supply Line Shut off Valve to stop water supply 2 Open the Air Shut off Valve 3 Press the Stop Button and drain the Float Tank and Evaporator Casing 4 Turn off the icemaker Before restarting the icemaker 1 Close the Air ...

Страница 32: ...mal usage take utmost care when handling this icemaker so as not to cause any damages to the system In the case of accidental damage to the refrigeration system causing refrigerant leak do not create a source of ignition in the area Do not operate electrical switches or plugs in the area do not use naked flame Immediately ventilate the area by opening doors and or windows d COMPRESSOR The Compress...

Страница 33: ...rovided for forced air cooling Use a vacuum cleaner or brush to remove dirt and dust between the spiral fins Be careful not to bend the fins g CONDENSER COOLING FAN MOTOR The Fan Motor cools the Air cooled Condenser and sends air to condense refrigerant gas inside the Condenser h DRIER The Drier uses desiccants molecular sieves activated alumina to absorb moisture in the refrigeration circuit The ...

Страница 34: ...the Compressor starts to begin icemaking operation In normal operation the icemaker shuts down when the Storage Bin fills up to trip the Bin Control Switch or the Stop Button is pressed When the Compressor operates for 6 hours in total and continuously for more than 10 minutes the icemaker supplies water until the Reservoir fills up and starts a drain cycle After 10 minutes the icemaker automatica...

Страница 35: ...31 FM 300AFE HC FM 300AFE HCN ...

Страница 36: ...32 ...

Страница 37: ...33 c SEQUENCE FM 481AGE HC FM 481AGE HCN 1 Startup Water Supply ...

Страница 38: ...34 FM 481AGE HC FM 481AGE HCN 2 Startup After completion of water supply Gear Motor and Fan Motor start 5 min ...

Страница 39: ...35 FM 481AGE HC FM 481AGE HCN 3 Startup Ice production starts ...

Страница 40: ...36 FM 481AGE HC FM 481AGE HCN 4 Normal Operation Bin Control ...

Страница 41: ...37 FM 481AGE HC FM 481AGE HCN 5 Shutdown Compressor stops 5 min ...

Страница 42: ...38 FM 481AGE HC FM 481AGE HCN 6 Shutdown Drain ...

Страница 43: ...39 FM 300AFE HC FM 300AFE HCN 1 Startup Water Supply ...

Страница 44: ...40 FM 300AFE HC FM 300AFE HCN 2 Startup After completion of water supply Gear Motor and Fan Motor start 5 min ...

Страница 45: ...41 FM 300AFE HC FM 300AFE HCN 3 Startup Ice production starts ...

Страница 46: ...42 FM 300AFE HC FM 300AFE HCN 4 Normal Operation Bin Control ...

Страница 47: ...43 FM 300AFE HC FM 300AFE HCN 5 Shutdown Compressor stops 5 min ...

Страница 48: ...44 FM 300AFE HC FM 300AFE HCN 6 Shutdown Drain ...

Страница 49: ...wn with a trouble an error code will be displayed immediately to notify the user To facilitate servicing ask the user for the applicable error code and prepare for the trouble in advance 4 Flush Timer The previous models were equipped with a Flush Timer that periodically flushes the water circuit to prevent water deposits from entering the Bearing and accelerating its wear The latest models have t...

Страница 50: ...or at the same time When ice is used the Actuator will return to the original position to switch on the Proximity Switch The Gear Motor will restart in 7 seconds and the Compressor in 5 minutes When the Bin Control Switch seems to have malfunctioned check the dimensions of the Actuator as well as the operation of the Proximity Switch Also if the Chute Switch or the Gear Motor Circuit Protector has...

Страница 51: ... Normal Condition Abnormal Condition Band moves and presses microswitch j DEICING HEATER BELT HEATER FM 481AGE HCN FM 300AFE HCN ONLY The Deicing Heater is provided to reduce the load of ice passing the Extruding Head and prevent vapor lock If the Extruding Head is clogged with ice a creaking sound will be heard or the Evaporator Cylinder will expand to break the soldered joint between the Cylinde...

Страница 52: ...wer supply for the icemaker Turn it OFF to shut down the unit for a long time b SERVICE OPERATION Remove the Front Panel for access to the Option and Set Buttons CAUTION Removal of the Front Panel will expose moving and hot parts It is allowed for qualified service personnel only 1 Setting Model No The Model Setting No must be set to 34 at the time of replacement of the Controller Board Improper s...

Страница 53: ...ess than 1 000 hours but less than 2 000 hours 25 indicates not less than 25 000 hours but less than 26 000 hours 4 Resetting Compressor Operating Hours Do not use this command unless necessary With the Operation Switch in the OFF position keep pressing the Ice Stop Option Buttons together and turn ON the Operation Switch Release the Buttons when the Display Window shows the ICE mode The Compresso...

Страница 54: ...g the Option Button in the ICE or STOP mode The Display Window will show the compressor operating hours b 3 Press and release the Stop Button to display the error record b 5 The most recent errors will be displayed in reverse order of occurrence When appears press and release the Stop Button b 6 Press and release the Stop Button to indicate numerals and or letters six times When appears release th...

Страница 55: ...es Release the Option Button to return to the original mode The freeze cycle time is displayed with two digits each for minutes o E 0 9 and seconds 0 5 0 9 Minutes o 0 9 0 9 min A 0 9 10 19 min b 0 9 20 29 min C 0 9 30 39 min d 0 9 40 49 min E 0 9 50 59 min Seconds 0 5 0 9 Example o 9 4 8 9 minutes 48 seconds b 7 3 6 27 minutes 36 seconds An approximate ice production capacity can be calculated fr...

Страница 56: ... will stop When a service call is received ask the user to check which error code is in the Display Window Then see the error code table in 9 ERROR CODES to locate the cause b PROTECTORS 1 Compressor Internal Inherent Motor Protector Senses a temperature rise of the Compressor and internally shuts off the circuit Automatically resets when the temperature goes down If the Compressor takes a long ti...

Страница 57: ...pout and Chute will be clogged with ice and disconnected to spill ice The Chute Switch is installed to prevent this trouble EL will appear in the Display Window when the Chute Switch operates 6 Low Water In case of low water or clogged water supply circuit the icemaker will shut down unless the Float Switch trips at the upper float level within 5 minutes after tripping at the lower float level The...

Страница 58: ... condensing pressure when the icemaker has a clogged Air Filter or a dirty Condenser E4 will appear in the Display Window when the Pressure Switch trips five times within an hour 11 Voltage If the supply voltage is too low the Compressor may fail to start properly or the Gear Motor may lock to cause freeze up inside the Evaporator To prevent these troubles the icemaker will shut down and wait unti...

Страница 59: ...Fan Motor Cooling water circuit Refrigeration circuit Condenser clogged Water supply Installation conditions E5 Gear Motor Drive Element Error Gear Motor is OFF on Controller Board while Rotation Sensor signals Gear Motor rotation or current flows Whole unit stops Press Reset Button Miswiring Gear Motor Magnet Switch or Relay Replace Controller Board E8 Discharge Pipe Temperature Error Discharge P...

Страница 60: ...erly Memory circuit not available Replace Controller Board Error records and compressor operating hours not available on display c1 Low Water Water supply continues for more than 90 seconds or Float Switch trips at lower float level and does not reset for more than 60 seconds after water supply Whole unit stops until Reservoir fills up Only Control Water Valve operates intermittently for 5 minutes...

Страница 61: ...Pressure bar Head Pressure1 bar Head Pressure2 bar Suction Pressure1 bar Suction Pressure2 bar 0 50 100 150 200 250 300 350 400 450 500 10 10 21 15 32 21 Ambient Temp Water Temp Ice Production Cspscity kg day Ice Production Capacity kg day 0 0 05 0 1 0 15 0 2 0 25 0 3 0 35 0 4 0 45 0 5 10 10 21 15 32 21 Ambient Temp Water Temp Water Consumption Water Consumption ...

Страница 62: ...ressure bar Head Pressure1 bar Head Pressure2 bar Suction Pressure1 bar Suction Pressure2 bar 0 50 100 150 200 250 300 350 400 10 10 21 15 32 21 Ambient Temp Water Temp Ice Production Capacity kg day Ice Production Capacity kg day 0 0 05 0 1 0 15 0 2 0 25 0 3 0 35 0 4 10 10 21 15 32 21 Ambient Temp Water Temp Water Consumption Water Consumption ...

Страница 63: ...ssure bar Head Pressure bar Suction Pressure bar 0 50 100 150 200 250 300 350 10 10 21 15 32 21 Ambient Temp Water Temp Ice Production Capacity kg day Ice Production Capacity kg day 0 00 0 05 0 10 0 15 0 20 0 25 0 30 0 35 10 10 21 15 32 21 Ambient Temp Water Temp Water Consumption m 3 day Water Consumption m 3 day c FM 300AFE HC ...

Страница 64: ...ssure bar Head Pressure bar Suction Pressure bar 0 50 100 150 200 250 300 350 10 10 21 15 32 21 Ambient Temp Water Temp Ice Production Capacity kg day Ice Production Capacity kg day 0 00 0 05 0 10 0 15 0 20 0 25 0 30 0 35 10 10 21 15 32 21 Ambient Temp Water Temp Water Consumption m 3 day Water Consumption m 3 day d FM 300AFE HCN ...

Страница 65: ...1 Coil winding opened 1 Replace f Water Valve 1 Coil winding opened 1 Replace 1 Closed 1 Open g Water Supply Tap 2 Water failure 2 Wait till water is supplied 1 Disconnected 1 Connect h Plug and Receptacle Control Box 2 Terminal out of Plug or Receptacle 2 Insert Terminal back in position i Chute Switch 1 Tripped 1 See III 6 i CHUTE SWITCH j Overload Protector 1 Tripped 2 Reset 1 The icemaker will...

Страница 66: ... Bad contacts 8 Check for continuity and replace 3 Water has been supplied but the icemaker will not start d Pressure Switch 9 Loose connections 9 Tighten 1 Bad contacts 1 Check for continuity and replace Controller Board a X1 and X2 Relays 2 Coil winding opened 2 Replace Controller Board 1 Loose connections 1 Tighten 2 Motor winding opened or earthed 2 Replace b Compressor 3 Motor Protector tripp...

Страница 67: ... PROBLEM POSSIBLE CAUSE REMEDY 1 Bearing worn out 1 Replace 2 Fan blade deformed 2 Replace fan blade a Fan Motor Condenser Unit 3 Fan blade does not move freely 3 Replace 1 Bearings worn out or cylinder valve broken 1 Replace b Compressor 2 Mounting pad out of position 2 Reinstall c Refrigerant Lines 1 Rub or touch lines or other surfaces 1 Replace d Gear Motor Ice Making 1 Bearing or Gear wear da...

Страница 68: ...se 1 Clean or replace 2 Overflow from Reservoir Water does not stop c Float Switch 1 Bad contacts 1 Check for continuity and replace a Power Supply Voltage 1 Too high or too low 1 Connect the unit to a power supply of proper voltage 3 Gear Motor Protector operates frequently b Evaporator Assy 1 Bearings or Auger worn out 1 Replace Bearing or Auger ...

Страница 69: ...eak into the refrigerant circuit unless qualified competent and authorised to do so 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 Fax 44 0 1952 292777 ...

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