Hoshizaki KM-900MAH, Service Manual

Page: 64 / 73

64
11. REMOVAL AND REPLACEMENT OF THERMISTOR
CAUTION
1. Fragile, handle very carefully.
2. Always use a recommended sealant (High Thermal Conductive Type),
Model KE4560RTV manufactured by SHINETSU SILICONE, Part Code
60Y000-11, or Part Code 4A0683-01 equivalent.
3. Always use a recommended foam insulation (Non-absorbent Type) or
equivalent.
4. Do not shorten or cut the thermistor leads when installing it.
1) Turn off the power supply.
2) Remove the panels.
3) Remove the Control Box Cover.
4) Disconnect the Thermistor leads from
the K3 Connector on the Controller Board.
5) Remove the Plastic Cable Ties, Foam
Insulation, Thermistor Holder and
Thermistor. See Fig. 2.
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 60Y000-11 or
4A0683-01) to the Thermistor Holder concave.
9) Attach the new Thermistor to the Suction Pipe very carefully to prevent damage to
the leads. And secure it using the Thermistor Holder and recommended foam
insulation.
Note: For models with the Liquid Bypass, the Thermistor should be
located upstream from the Liquid Bypass outlet, and its end should
be 4-3/4" or more away from the outlet. See Fig. 3.
Foam Insulation Thermistor Holder
Thermistor Lead Cable Tie
Fig. 2