Hoshizaki F-80 I MWH (-c), F-80 I MAH (-c) service manual Other, Problem, Possible Cause, Remedy

Page 38

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,

1.

Replace.

 

 

 

 

 

or cylinder valve

 

 

 

 

 

 

 

broken.

 

 

 

 

 

 

2.

Mounting pad out of

2.

Reinstall.

 

 

 

 

 

position.

 

 

 

 

c)

Refrigerant Lines

1.

Rub or touch lines or

1.

Replace.

 

 

 

 

 

other surfaces.

 

 

 

 

d)

Gear Motor (Ice

1.

Bearing or Gear

1.

Replace.

 

 

 

Making)

 

worn out / damaged.

 

 

 

 

e)

Evaporator

1.

Too much pressure

1.

Replace.

 

 

 

 

 

loss.

 

 

 

 

 

 

2.

Scale on inside wall

2.

Remove Auger. Use

 

 

 

 

 

of Freezing Cylinder.

 

"SCALE AWAY" or

 

 

 

 

 

 

 

"LIME-A-WAY"

 

 

 

 

 

 

 

solution to clean

 

 

 

 

 

 

 

periodically. If the

 

 

 

 

 

 

 

water is found hard by

 

 

 

 

 

 

 

testing, install a

 

 

 

 

 

 

 

softener.

[2]

Overflow from

a)

Water Supply

1.

Water pressure too

1.

Install a pressure

 

Reservoir (Water

 

 

 

high.

 

Reducing Valve

 

does not stop.)

b)

Control Water Valve

1.

Diaphragm does not

1.

Clean or replace.

 

 

 

 

 

close.

 

 

 

 

c)

Float Switch

1.

Bad contacts.

1.

Check for continuity

 

 

 

 

 

 

 

and replace.

[3]

Gear Motor Fuse

a)

Power Supply

1.

Too high or too low.

1.

Connect the unit to a

 

blown frequently.

 

Voltage

 

 

 

power supply of

 

 

 

 

 

 

 

proper voltage.

 

 

b)

Ice Making Unit

1.

Bearings or Auger

1.

Replace Bearing or

 

 

 

 

 

worn out.

 

Auger.

 

 

c)

Bin Control

1.

Bad contacts.

1.

Check for continuity

 

 

 

 

 

 

 

and replace.

 

 

 

 

2.

Activator does not

2.

Clean Axle and its

 

 

 

 

 

move freely.

 

corresponding holes

 

 

 

 

 

 

 

or replace Bin Control.

38

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Contents Modular Flaker Models F-801MAH-C F-801MWH-C Number Issued Revised“A Superior Degree of Reliability” HoshizakiHoshizaki America, IncHOSHIZAKI AMERICA, INC 618 Highway 74 South Peachtree City, GA Phone 1-800-233-1940 Technical Service 770 487-2331 FaxComplete and detailed explanation of the problem Attn HOSHIZAKI Technical Support DepartmentCONTENTS 8. Removal and Replacement of Fan Motor 5. Removal and Replacement of Expansion Valve7. Removal and Replacement of Evaporator Assembly 9. Removal and Replacement of Control Water ValveI. Specification 1. Icemaker F-801MAHF-801MWH F-801MAH-C F-801MWH-C II. General Information 1. Construction F-801MAH/-CF-801MWH/-C Water Supply Inlet Junction Box Water Regulator Compressor Drier2. Control Box Layout GEAR MOTORRUN CAPACITOR CONTROL TIMERFLUSH III. Technical Information 1. Water Circuit and Refrigeration Circuit F-801MWH/-C 2. Wiring Diagrams F-801MAH/-C, F-801MWH/-C3. Sequence of Electrical Circuit b When reservoir has been filled, gear motor starts immediately c Compressor starts about 60 sec. after gear motor starts Page e Low water except water-cooled model Page Page h When flush timer operates for 15 min. every 12 hours Page Page Proper wiring. The unit starts 4. Timing ChartMiswiring. Circuit Protect Relay operates 60 sec 150 sec1 sec 1. CIRCUIT PROTECT RELAY 2. WATER LEVEL UPPER 3. FLOAT SWITCH LOWER 5. Performance Data WATER FLOW FOR CONDENSER F-801MAH-C F-801MWH-C IV. Adjustment of Components 1. Adjustment of Water Regulating Valve water-cooled model only2. Adjustment of Flake Size POSSIBLE CAUSE V. Service Diagnosis 1. No Ice ProductionPROBLEM REMEDYREMEDY POSSIBLE CAUSE PROBLEM2. Low Ice Production REMEDY3. Other a Refrigerant Recovery VI. Removal and Replacement of Components1. Service for Refrigerant Lines b Evacuation and Recharge R-404A2. Brazing DANGER 3. Removal and Replacement of Compressor 4. Removal and Replacement of Drier 5. Removal and Replacement of Expansion Valve Page Extruding Head 7. Removal and Replacement of Evaporator AssemblyCutter AugerBearing-Lower and Mechanical Seal Gear Motor28 Move the flush switch to the ICE position 27 When replacing the evaporatorc Check for leaks using nitrogen gas 140 PSIG and soap bubbles 30 Turn on the power supplyRubber O-ring Nylon Ring Bolt Washer Cutter Extruding Head Washer Auger Mechanical Seal O-ring Bearing Lower Bolt WasherCoupling - Spline Socket Head Cap Screw Evaporator Washer Socket Head Cap Screw Barrier8. Removal and Replacement of Fan Motor 9. Removal and Replacement of Control Water Valve10. Removal and Replacement of Flush Water Valve VII. Cleaning and Maintenance 1. Preparing the Icemaker for Long Storage2. Cleaning and Sanitizing Instructions a Cleaning Solutionb Cleaning Procedure c Sanitizing Solution d Sanitizing Procedure - Initiale Sanitizing Procedure - Final 21 Flush out any solution from the storage bin 18 Move the flush switch to the “ICE” position and run the icemaker19 Turn off the power supply after 30 minutes 22 Turn on the power supply and start the automatic icemaking process3. Maintenance 3 Air Filter air-cooled model only 4 Condenser except water-cooled model
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