Hoshizaki KM-1301SAH/3 User Manual download pdf (Page 65)

V. Removal and Replacement of Components

WARNING

1. This unit should be diagnosed and repaired only by qualied service

personnel to reduce the risk of death, electric shock, serious injury, or re.

. 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."

A. Service for Refrigerant Lines

WARNING

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

properly trained and EPA-certied 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 (140 PSIG). DO NOT use R-404A

as a mixture with pressurized air for leak testing.

CAUTION

1. 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 ow.

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 (11°C).

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

servicing parts.

1. Refrigerant Recovery

The icemaker is provided with refrigerant service valves. Using proper refrigerant practices,

recover the refrigerant from the service valves and store it in an approved container. Do not

discharge the refrigerant into the atmosphere.

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Hoshizaki KM-1301SAH/3 User Manual Page 65