Repair
311075R 51
Electric Motor
Test Motor
If motor is not locked up by pumps, it can be
tested using a 9 V battery. Open recirculating
valves, disconnect J4 or J11 from control
board, see FIG. 12, page 47. Touch jumpers
from battery to motor connections. Motor
should turn slowly and smoothly.
Removal
2. Remove four screws (207) and shroud
(206). See FIG. 14.
3. Remove drive housing/pump assemblies,
page 49.
4. Disconnect motor cables as follows:
a. Find control board at back of control
module, see F
IG. 12, page 47.
b. Unplug motor power connector from J4
(240 V units) or J11 (120 V units).
c. Unplug motor temp switch harness from
connector J7.
d. Unplug cable (37) from fan (202). See
F
IG. 15.
e. Thread motor power switch harness out
bottom of control module and cable
channel, to free motor.
5. Remove screws holding motor to bracket.
Lift motor off unit.
Installation
1. If replacing motor, install fan assembly and
fan mount threaded bushing on new motor.
2. Place motor and fan on unit. Thread motor
switch harness into control module.
3. Fasten motor with screws underneath. Do
not tighten yet.
4. Plug 3-pin connector J7 to board.
5. Plug Motor Power switch harness to con-
nector J4 (240 V units) or J11 (120 V units).
6. Install drive housing/pump assemblies,
page 49. Reconnect inlet assemblies to
pumps.
7. Tighten motor mounting screws.
8. Return to service.
If replacing a component with electrical
cabling, remove one supply tank, page
39.
1. See Before Beginning Repair, page 39.
Relieve pressure, page 27.
NOTICE
Motor is heavy. Two people may be required
to lift.
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