Hoshizaki F-80 I MAH (-c) VII. Cleaning and Maintenance, Preparing the Icemaker for Long Storage

Page 51
VII. Cleaning and Maintenance

VII. Cleaning and Maintenance

IMPORTANT

Ensure all components, fasteners and thumbscrews are securely in place after any maintenance or cleaning is done to the equipment.

1. 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. The storage bin should be cleaned and dried. Drain the icemaker to prevent damage to the water supply line at sub-freezing temperatures, using air or carbon dioxide. Shut off the icemaker until the proper ambient temperature is resumed.

[Air-Cooled and Remote Air-Cooled Models]

1)Run the icemaker with the water supply line shut-off valve closed.

2)Open the drain valve and blow out the water inlet line by using air pressure.

3)Turn off the power supply.

4)Remove the front panel.

Shut-off Valve

5)Move the flush switch on the control box to the “FLUSH” position.

6)Turn on the power supply, and then drain out all water from the water line.

Drain Valve

7)Turn off the power supply.

8)Turn off the power switch on the control box.

Air or CO2

9)Replace the front panel in its correct position.

10) Close the drain valve.

11) Remove all ice from the storage bin, and clean the bin.

51

Image 51
Contents HoshizakiHoshizaki America, Inc Number Issued Revised“A Superior Degree of Reliability” Modular Flaker Models F-801MAH-C F-801MWH-CAttn HOSHIZAKI Technical Support Department Phone 1-800-233-1940 Technical Service 770 487-2331 FaxComplete and detailed explanation of the problem HOSHIZAKI AMERICA, INC 618 Highway 74 South Peachtree City, GACONTENTS 9. Removal and Replacement of Control Water Valve 5. Removal and Replacement of Expansion Valve7. Removal and Replacement of Evaporator Assembly 8. Removal and Replacement of Fan MotorF-801MAH I. Specification 1. IcemakerF-801MWH F-801MAH-C F-801MWH-C F-801MAH/-C II. General Information 1. ConstructionWater Supply Inlet Junction Box Water Regulator Compressor Drier F-801MWH/-CGEAR MOTOR 2. Control Box LayoutCONTROL TIMER FLUSHRUN CAPACITOR III. Technical Information 1. Water Circuit and Refrigeration Circuit F-801MWH/-C F-801MAH/-C, F-801MWH/-C 2. Wiring Diagrams3. 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 4. Timing Chart Miswiring. Circuit Protect Relay operatesProper wiring. The unit starts 150 sec 1 sec60 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 1. Adjustment of Water Regulating Valve water-cooled model only IV. Adjustment of Components2. Adjustment of Flake Size REMEDY V. Service Diagnosis 1. No Ice ProductionPROBLEM POSSIBLE CAUSEPROBLEM REMEDY PROBLEM2. Low Ice Production POSSIBLE CAUSE3. Other b Evacuation and Recharge R-404A VI. Removal and Replacement of Components1. Service for Refrigerant Lines a Refrigerant Recovery2. Brazing DANGER 3. Removal and Replacement of Compressor 4. Removal and Replacement of Drier 5. Removal and Replacement of Expansion Valve Page Auger 7. Removal and Replacement of Evaporator AssemblyCutter Extruding HeadGear Motor Bearing-Lower and Mechanical Seal30 Turn on the power supply 27 When replacing the evaporatorc Check for leaks using nitrogen gas 140 PSIG and soap bubbles 28 Move the flush switch to the ICE position Socket Head Cap Screw Evaporator Washer Socket Head Cap Screw Barrier Auger Mechanical Seal O-ring Bearing Lower Bolt Washer Coupling - Spline Rubber O-ring Nylon Ring Bolt Washer Cutter Extruding Head Washer9. Removal and Replacement of Control Water Valve 8. Removal and Replacement of Fan Motor10. Removal and Replacement of Flush Water Valve 1. Preparing the Icemaker for Long Storage VII. Cleaning and Maintenancea Cleaning Solution 2. Cleaning and Sanitizing Instructionsb Cleaning Procedure d Sanitizing Procedure - Initial c Sanitizing Solutione Sanitizing Procedure - Final 22 Turn on the power supply and start the automatic icemaking process 18 Move the flush switch to the “ICE” position and run the icemaker19 Turn off the power supply after 30 minutes 21 Flush out any solution from the storage bin3. Maintenance 4 Condenser except water-cooled model 3 Air Filter air-cooled model only