Electric Motor; Motor Brushes - Graco Reactor E-10 Instructions-Parts List Manual

Repair

Electric Motor

Test Motor
If the motor is not locked up by pumps, it can be tested
using a 9 V battery. Open the recirculating valves,
disconnect J4 or J11 from the control board, see F
14, page 42. Touch jumpers from battery to the motor
connections. The motor should turn slowly and
smoothly.
Removal
NOTE: If replacing a component with electrical cabling,
remove one supply tank. See Remove Supply Tanks,
page 36.
1. See Before Beginning Repair, page 36.
1. Relieve the pressure. Follow the Pressure Relief
Procedure, page 22.
2. Remove four screws (207) and the shroud (206).
See F . 16, page 45.
IG
3. Remove the drive housing. See Drive Housing,
page 44.
4. Disconnect the motor cables as follows:
a. Find the control board at the back of the control
module, see F
IG
b. Unplug the motor power connector from J4 (240
V units) or J11 (120 V units).
c. Unplug the motor temp switch harness from
connector J7.
d. Unplug the cable (37) from the fan (202). See
F . 17, page 47.
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e. Thread the motor power switch harness out of
the bottom of the control module and cable
channel, to free the motor.
46
. 14, page 42.
NOTE: The motor is heavy and may require two people
to lift.
5. Remove the screws holding the motor to bracket.
Lift the motor off unit.
Installation
.
IG
1. If replacing the motor, install the fan assembly and
fan mount threaded bushing on the new motor.
2. Place the motor and fan on the unit. Thread the
motor switch harness into the control module.
3. Fasten the motor with screws underneath. Do not
tighten yet.
4. Plug 3-pin connector J7 to the board.
5. Plug the motor power switch harness to the
connector J4 (240 V units) or J11 (120 V units).
6. Install the drive housing. See Drive Housing, page
44. Reconnect the inlet assemblies to the pumps.
7. Tighten the motor mounting screws.
8. Return to service.

Motor Brushes

Replace brushes worn to less than 1/2 in. (13 mm). The
brushes wear differently on each side of motor; check
both sides. Brush Repair Kit 287735 is available; kit
includes instruction sheet 406582.
NOTE: The motor commutator should be smooth. If not,
resurface the commutator or replace motor.
1. See Before Beginning Repair, page 36.
2. Relieve the pressure. Follow the Pressure Relief
Procedure, page 22.
3. See your brush repair kit instruction sheet. Remove
the old brushes and install new ones supplied in kit.
311075ZAB