Hoshizaki 73180 ユーザーズマニュアル

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• This unit should be diagnosed and repaired only by qualified service personnel to 

reduce the risk of death, electric shock, serious injury, or fire.

• Move the power switch to the "OFF" position, then unplug the unit from the 

electrical outlet before servicing. 

• 

CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are 

securely in place after the unit is serviced. Make sure that none have fallen into 
the storage bin.

• Make sure all food zones in the icemaker and storage bin are clean after the 

unit is serviced. For cleaning procedures, see "VI.B. Cleaning and Sanitizing 
Instructions."

• Repairs requiring the refrigeration circuit to be opened must be performed by 

properly trained and EPA-certified service personnel.

• Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of 

refrigerant to the system (if using an electronic leak detector), and then raise the 
pressure using nitrogen gas (140 PSIG). DO NOT use R-134a as a mixture with 
pressurized air for leak testing. 

• Always recover the refrigerant and store it in an approved container. Do not 

discharge the refrigerant into the atmosphere.

• Do not leave the system open for longer than 15 minutes when replacing or 

servicing parts. The Polyol Ester (POE) oils used in R-134a units can absorb 
moisture quickly. Therefore it is important to prevent moisture from entering the 
system when replacing or servicing parts.

• Always install a new drier every time the sealed refrigeration system is opened. Do 

not replace the drier until after all other repair or replacement has been made.

• When brazing, protect the drier by using a wet cloth to prevent the drier from 

overheating. Do not allow the drier to exceed 250°F (121°C).

No refrigerant access valves are provided on this unit. Using proper refrigerant 
practices, utilize a temporary tap-line valve on the high side to recover the refrigerant. 
Store the refrigerant in an approved container. Do not discharge the refrigerant into the 
atmosphere. 
After recovery is complete, replace the tap-line valve with a proper, permanent access 
valve.