Control Board Replacement - Graco FinishPro 311911C Repair Manual

Control Board Replacement

Control Board Replacement
See Wiring Diagram, page 36.
FinishPro 390
Removal
1. Relieve pressure, page 7. Disconnect power cord
from outlet.
2. Remove two screws (30) and shroud (29) (see illus-
tration, page16).
3. Disconnect pressure switch connector (A) from con-
trol board (33).
A
B
33
240V
4. Disconnect motor connector (B) from control board
(33).
5. Remove three screws (30) securing control board to
housing (two are located on the front and one on the
back next to the power cord).
33
30
20
33
120V
ti6143b
ti9258a
6. Pull control board out slightly and then slide it back
and off of frame.
Make sure power cord is free and not wrapped
around cord wrap.
7. Remove grommet and wires from strain relief.
.
Ground wire will remain attached to sprayer with
grounding screw.
33
B
8. Remove two power cord connectors (C) from control
board.
A
33
240V
ti6122a
Grommet
33
C
120V
Strain
Relief
C
ti6143b
311911C