Specifications

Disconnect and lockout the main power.
Shut off the cool-
ing water in feed.
Drain the unit of
all fluid.
Remove
the drain plugs at the
rear of the unit
.
Remove the top
and side panels of
the Thermolator.
Remove the seal flush
line.
Use a 1/2-inch open-end
wrench to remove the vent
line from the connection on
the pump adapter.
Remove the pump
assembly bolts.
Use a
9/16-inch open-end box
wrench to remove the bolts
holding the pump to the
volute case. The bolt in the rear
will require a 9/16-inch crows
foot wrench.
Lift the pump assembly
straight up to remove.
The pump can now be replaced
or disassembled for repair.
Reverse the steps to
reassemble the unit.
NOTE: Before restarting, close all drain openings using
sealant on the threads and reprime the pump. Do not start
until the pump is completely filled with water.
Thermolator TW-1 and TW-2 UGH015/0100
6-22 TROUBLESHOOTING
REMOVING
THE
PUMP
1
2
3
4
5
6
7
8
Drain
plugs
Cooling
water in
DIRECT INJECTION
CLOSED CIRCUIT
ISOLATED CIRCUIT
Cooling water out
Cooling water out
Cooling water in
WARNING:
Electrical shock and
hot surface hazards
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 less than
100° F (38° C)
Pump seal flush line
Pump
assembly
bolts