Hoshizaki JWE-620UA-6B service manual Removal and Replacement of Thermistor

Models: JWE-620UA-6B

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3) Header (Rinse Spray Arm) and Double Pipe Connection

M. Removal and Replacement of Thermistor

CAUTION

1.The thermistors are fragile; handle very carefully.

2.Always use the recommended sealant (high thermal conductive type), Model KE4560RTV manufactured by SHINETSU SILICONE, Part Code 60Y000-11, or Part Code 4A0683-01 or equivalent.

3.Do not shorten or cut the thermistor leads.

1)Move the power switch (GFCI) to the “OFF” position, then turn off the power supply. Lockout/Tagout to prevent the power from being turned back on inadvertently.

2)Remove the front panel.

3)Remove the plastic bag covering the thermistor connector, then disconnect the thermistor connector. If replacing the wash tank thermistor, disconnect the leads from the wash tank electrode. If replacing the internal booster tank thermistor, disconnect the closed end connectors for the internal booster tank water level float switch and the internal booster tank backup water level float switch.

4)Remove the tape or ties securing the thermistor leads, then pull out the thermistor from the wash tank or internal booster tank straight towards you.

5)Clean out all old sealant from inside the thermistor hole.

6)Route the wires from the new thermistor connector through the existing black plastic sleeve.

7)Apply the recommended sealant (KE4560RTV, Part Code 60Y000-11 or 4A0683-01) to the end of the new thermistor, then insert the thermistor quickly and securely.

8)Use tape or ties to secure the thermistor leads in their correct position.

9)Reconnect the thermistor connector and the wash tank electrode leads or the internal booster tank water level float switch and internal booster tank backup water level float switch leads, then bag and tie them.

10)Replace the front panel in its correct position.

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Page 65
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Hoshizaki JWE-620UA-6B service manual Removal and Replacement of Thermistor