Replacing Immersion Heaters; R Eplac In G Im M Er S Io N H E A T E R S - Conair Thermolator TW-S User Manual

IMPORTANT: Always refer to the
wiring diagrams that came with
your Thermolator to locate specific
electrical components. Illustrations
in the User Guide are intended to
be representative only.
6-36 I Tr o u b l e sh o o ti n g
Rep laci ng Im me rsio n H ea ters
WA R NI NG : Ele ctr i cal Shock and Hot Sur face Haz ard
Before attempting maintenance of any kind on the Thermolator, you must stop the
unit; disconnect and lockout the main power supply; and allow the unit to cool to
100° F {38° C}.
1
Disconnect and lockout the main power.
2
Remove the top panel of the Thermolator.
3
Remove the heater cap. Use a 1/4-inch open-
ended wrench to remove the three bolts that hold the
cap to the heater tank.
4
Remove the heater wiring harness. Label the wir-
ing layout of the heater terminals; wires are labeled
as 2T1, 2T2, 2T3 and GND. (They may also be
labelled as 3T1, 3T2, 3T3 if dual-fed or 48kw units)
Record the position of bus links, jumpers, and feed wires so they can be replaced in
exactly the same manner on the replacement heater.
Then unscrew the nuts on the cable connectors and remove the wires.
5
Shut off the cooling water in.
6
Drain the Thermolator using the Pressure Relief Valve located at the rear of the
unit.
7
Remove the four bolts that hold the heater element in place. Use a 9/16-inch
socket.
If heater feed wires terminate in hexagonal termination studs, remove those studs from the
heater with a nutdriver and re-install on the replacement heater."
Heater
cap
(Continued)