Hoshizaki M029-897 service manual V. Maintenance

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V. Maintenance

V. Maintenance

The maintenance schedule below is a guideline. More frequent maintenance may be required depending on water quality, the appliance's environment, and local sanitation regulations

WARNING

•Only qualified service technicians should service the appliance.

•To reduce the risk of electric shock, do not touch the control switch or service switch with damp hands

•Before servicing: Move the control switch to the "OFF" position and turn off the power supply. Place the disconnect in the "OFF" position.

Lockout/Tagout to prevent the power supply from being turned back on inadvertently.

•CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are securely in place after any maintenance is done to the icemaker. Make sure that none have fallen into the dispenser unit/ice storage bin.

		Maintenance Schedule
Frequency	Area	Task

Daily	Scoop	Clean the ice scoop using a neutral cleaner. Rinse thoroughly after
		cleaning.
Bi-Weekly	Air Filters	Inspect. Wash with warm water and neutral cleaner if dirty.
Monthly	External Water	Check for proper pressure and change if necessary.
	Filters
	Icemaker Exterior	Wipe down with a clean, soft cloth. Use a damp cloth containing a
		neutral cleaner to wipe off oil or dirt build up. Clean any chlorine staining
		(rust colored spots) using a non-abrasive cleanser.
Yearly	Icemaker and	Clean and sanitize per the cleaning and sanitizing instructions provided
	Dispenser Unit/Ice	in the instruction manual or maintenance label on the icemaker.
	Storage Bin Liner
	Water Supply Inlet	Close the icemaker water supply line shut-off valve and drain the water
		system. Clean the water supply inlet screen.
	Condenser	Inspect. Clean if necessary by using a brush or vacuum cleaner. More
		frequent cleaning may be required depending on location.
	Water Hoses	Inspect the water hoses and clean/replace if necessary.

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Contents HoshizakiHoshizaki America, Inc Stackable Square Cuber Model IM-500SAA618 Highway 74 South Peachtree City, GA Complete and detailed explanation of the problemPhone 1-800-233-1940 770 Fax Attn Hoshizaki Technical Support DepartmentCONTENTS Indicates a situation which could result in damage to the Important Safety Informationserious injury appliance or propertyWARNING, continued A. Construction I. Construction and Water/Refrigeration Circuit Diagram1. Air-Cooled Model SAA B. Water/Refrigeration Circuit Diagram Water TankShutdown and Restart Sequence Flow Chart II. Sequence of Operation and Service DiagnosisA. Sequence of Operation Flow Chart IM Control Board2. Harvest Cycle B. Sequence of Operation1. Startup Cycle 3. Freeze Cycle4. Shutdown C. Service Diagnosis Table No Ice Production - Possible CauseLong Freeze Cycle Low Ice Production - Possible CauseLong Harvest Cycle Slab Does Not Break Into Separate Cubes - Possible CauseCloudy Cubes - Possible Cause D. Bin Control Check and Cleaning 1. Bin Control Check2. Bin Control Cleaning E. Evaporator Thermistor Check III. Controls and Adjustments A. Control Switch B. Control BoardIM Control Board 1. Control Board LayoutPart Number P01873-01 Version 1.3A or Later 2. SERVICE 1 and SERVICE 2 Buttons 1. RESET ButtonC. Control Buttons D. Control Board Settings Freeze Cycle Water Supply Time 1 Partial Drain CB water supply time 1 CB Setting 12 timer terminatesFreeze Cycle Water Supply Time 2 Partial Drain CB DO NOT ADJUST 3. Press the RESET button to view the item’s value E. Control Board Information Display2. Use the SERVICE 1 and SERVICE 2 buttons to move through the list 4. Press the RESET button to return to listexample, 655,350 cycles Freeze cycles interrupted by bin control shutdown1.0A, displays as follows 1. Control Board Replacement F. Control Board Model Code Setting2. Checking or Changing the Control Board Model Code Page G. Error Codes a To increase dimple diameter H. Quick Adjustments1. Dimple Diameter b To decrease dimple diameterNormal Position 2. Ice ClarityDrain Position A. Refrigeration Circuit Service Information IV. Refrigeration Circuit and Component Service Information1. Refrigerant Recovery 2. Brazing 3. Evacuation and Recharge R-404AB. Component Service Information J. Pump Motor Assembly Refer to illustration for assemblyAssembly G. Water Pan AssemblyV. Maintenance 1. Remove the water from the icemaker water supply line VI. Preparing the Icemaker for Periods of Non-Use2. Drain the water tank VII. Disposal VIII. Technical Information A. Specification Data1. IM-500SAA B. Performance Data C. Wiring Diagram 1. IM-500SAA