Hoshizaki KM-901MAH Manuel D’Utilisation

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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 control switch to the "OFF" position and turn off the power supply 

before servicing. 

3. 

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.

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

the unit is serviced. For cleaning procedures, see "VI. Cleaning and 
Maintenance."

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

properly trained and EPA-certified service personnel.

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

discharge the refrigerant into the atmosphere.

3. 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 (40 PSIG). DO NOT use R-404A 
as a mixture with pressurized air for leak testing. 

. Do not leave the system open for longer than 5 minutes when replacing or 

servicing parts. The Polyol Ester (POE) oils used in R-404A 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. 

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

made. Install the new drier with the arrow on the drier in the direction of the 
refrigerant flow. 

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

overheating. Do not allow the drier to exceed 50°F (°C). 

1. Refrigerant Recovery
The icemaker unit is provided with refrigerant access valves. Using proper refrigerant 
practices, recover the refrigerant from the access valves and store it in an approved 
container. Do not discharge the refrigerant into the atmosphere.