Replacing The Heater Contactor; Replacing The Heater; Contactor - Conair Thermolator TW-1 User Manual

R
EPLACING THE
H
EATER
C
ONTACTOR
IMPORTANT:
Always
refer to the wiring dia-
grams that came with
your Thermolator to
locate specific electrical
components. Illustrations
in the User Guide are
intended to be represen-
tative only.
6-22
T
ROUBLESHOOTING
WARNING:
Only qualified service personnel who have been
trained on electrical testing and the procedures for
avoiding the hazards should diagnose or correct prob-
lems that require opening the unit with power on.
Thermolators use mercury displacement heater contactors. The
heater contactors should be replaced if you have checked:
l the amp draw on each of the three-phase legs and discov-
ered a voltage imbalance greater than 10%.
l the continuity and found that ohms at the coil equal zero.
To replace the heater contactor:
1
Disconnect and lockout the main power.
2
Open the electrical enclosure door.
Turn the screw on the front panel counterclockwise to
open.
3
Disconnect the wires from the heater contactor
Make sure you label the wires to ensure you can connect
them correctly to the new contactor.
4
Remove the contactor
by removing the screws that
hold it in place.
5
Discard old contactor
using the proper disposal
procedure. See Material
Safety Data Sheet.
6
Reverse this proce-
dure
to install the new contactor.
Make sure the wires are
connected correctly.
Thermolator TW Series
Electrical Shock Hazard
Heater contactor
UGH025-0504