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REPAIRS AT THE UNIT
11.4
REPLACING THE MOTOR
1. Open the relief valve, valve position PRIME (k circulation),
switch the unit OFF, and unplug the power cord.
2. Remove the four motor cover screws (Fig. 15, Item 1).
Remove the motor cover (2).
3. Remove the four heat sink assembly screws (3). Pull the
heat sink assembly (4) away from the gear box housing (5).
4. Disconnect the five wires from the relay (6) that is mounted
on the inside of the heat sink assembly.
5. Connect the five wires to the relay (refer to the electrical
schematic in section 11.8 of this manual).
6. Using the four heat sink assembly screws (3), install the
heat sink assembly (4) onto the gear box housing (5).
Tighten the screws securely.
7. Disconnect the black and red wires coming from the gear
box housing. Disconnect the black and red wires from the
capacitors (8). Disconnect the black and red wires from
the motor (9).
8. Loosen and remove the four motor mounting screws (10).
9. Pull the motor out of the gear box housing.
If the motor will not dislodge from the pump
i
housing:
•
Remove the front cover plate.
•
Using a rubber mallet, carefully tap on the
front of the motor crankshaft that extends
through the slider assembly.
10. With the motor removed, inspect the gears in the gear box
housing for damage or excessive wear. Replace the gears,
if necessary.
11. Install the new motor into the gear box housing.
Rotate the motor fan manually until the armature
i
gear engages with the mating gear in the gear
box housing.
12. Secure the motor (9) with the four motor mounting screws
(10).
13. Push the new capacitors into their clip (8) on the new
motor.
14. Reconnect the wires (refer to the electrical schematic in
the section 11.8 of this manual).
15. Slide the motor cover (2) over the motor. Secure the motor
cover with the four motor cover screws (1).
20
5
9
8
11.5
CARBON BRUSHES IN MOTOR (MOTOR
BRUSH KIT P/N 704-276)
1. Remove the four screws (Fig. 16, Item 1) at the motor cover
(2). Remove motor cover.
2. Remove the two screws (3) at the shells (4). Remove shells.
3. Lift up both covers (5) with a small screwdriver.
4. Pull red wire (6) and black wire (7) out of the respective
carbon brush.
5. Insert new carbon brush and snap cover (5) into place.
6. Insert red wire (6) and black wire (7) onto the respective
carbon brush.
7. Screw down both shells (4).
8. Push motor cover (2) over the motor and fasten with the
four screws (1).
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6
ProSpray 20
3
4
6
10
7
3
4
1
2
1
2
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