Hoshizaki KM-901MAH 用户手册

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8) Braze all fittings with nitrogen gas flowing at a pressure of 3 to 4 PSIG.
9) 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.

0) Evacuate the system and charge it with refrigerant. See the rating label inside the 

icemaker, for the required refrigerant charge.

) Replace the panels in their correct positions.
) Turn on the power supply.

This section covers removal and replacement of the thermistor. For a thermistor check 
procedure, see "IV.E. Thermistor Check."

. The thermistor is fragile; handle very carefully.
. Always use the recommended sealant (high thermal conductive type), 

Model KE4560RTV manufactured by SHINETSU SILICONE, Part Code 
60Y000-, or Part Code 4A0683-0 or equivalent.

3. Always use the recommended foam insulation (non-absorbent type) or 

equivalent.

4. Do not shorten or cut the thermistor leads.

) Turn off the power supply.
) Remove the panels.
3) Remove the control box cover.
4) Disconnect the white thermistor connector from the control board WHITE K3 connector.
5) Remove the plastic cable ties, foam insulation, thermistor holder, and thermistor. See 

Fig. 5.

6) Scrape away the old sealant on the 

thermistor holder and the suction pipe.

7) Wipe off moisture or condensation on the 

suction pipe.

8) Smoothly apply recommended sealant 

(KE4560RTV, Part Code 60Y000- 
or 4A0683-0) to the thermistor holder 
concave.

9) Attach the new thermistor to the suction pipe in the same position as the previous 

thermistor. Be very careful to prevent damage to the leads. Secure it using the 
thermistor holder and recommended foam insulation.

Foam Insulation   

Thermistor Holder

Thermistor Lead   

Cable Tie