Thermolator TW Series UGH025-0504
6-20 TROUBLESHOOTING
RESETTING
OVERLOADS
REPLACING
PUMP
OVERLOAD
Disconnect and lockout the main power.
Open the electrical enclosure door.
Turn the screw on the front panel counterclockwise to
open.
Locate the pump overload module attached to
the pump motor starter.
Disconnect the three power leads from the
overload module to the pump motor. Note the placement
of each lead and label as needed.
Disconnect auxiliary wiring on
the overload module.
Remove the overload module.
Loosen the three screws that connect
the overload module to the motor con-
tactor. Pull the overload module down
to release it from the starter.
Reverse these steps to install
the new overload module.
Set the module reset mode to
MAN (manual).
Set the proper FLA trip point.
Do not exceed the FLA for the pump
motor.
8
9
The pump motor overload is located inside the unit’s electrical
enclosure.
Disconnect and lockout the main power.
Open the electrical enclosure door.
Turn the
screw on the front panel counterclockwise to open.
Check the overload.
If the red button is out, the over-
load has tripped. Press the blue
button to reset the overload.
Verify that the overload trip
point does not exceed the FLA
for the pump.
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2
3
Motor contactor
Motor overload
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2
3
4
5
6
7