Hoshizaki SRH/3 KM-1400SWH-M 用户手册

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页码 101
51
IV. Refrigeration Circuit and Component Service Information
 WARNING
• This appliance 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. 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 the icemaker is serviced. Make sure that none have fallen 
into the dispenser unit/ice storage bin.
• Make sure all food zones in the icemaker and dispenser unit/ice storage bin are 
clean after service. 
A. Refrigeration Circuit Service Information
 WARNING
• 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-404A as a mixture with 
pressurized air for leak testing.
NOTICE
• 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 min. when replacing or servicing 
parts. The Polyol Ester (POE) oils used in R-404A applications 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. 
Install the new drier with the arrow on the drier in the direction of the refrigerant 
flow.
• 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).
1. Refrigerant Recovery
The icemaker is provided with refrigerant service valves. Using proper refrigerant practices, 
recover the refrigerant. Store the refrigerant in an approved container. Do not discharge the 
refrigerant into the atmosphere.