Graco 390 253958, Important Safety Instructions Manual

Page: 20 / 32

Control Board Replacement
20 311737B
Control Board Replacement
See Wiring Diagram, page 28.
Removal
1. Relieve pressure , page 8. Disconnect power cord
from outlet.
2. Remove two screws (30) and shroud (29) (see illus-
tration, page17).
3. Disconnect pressure switch connector (A) from con-
trol board (33).
4. Disconnect motor connector (B) from control board
(33).
5. Remove 3 screws (30) securing control board to
housing (2 are located on the front and one on the
back next to the power cord).
6. Pull control board out slightly and then slide it back
and off of frame.
7. Remove grommet and wires from strain relief.
.
8. Remove 2 power cord (C) connectors from control
board.
ti6143a
240V
120V 33
33
A
B
B
A
30
33
ti6119b
Make sure power cord is free and NOT wrapped
around cord wrap.
Ground wire will remain attached to sprayer with
grounding screw.
ti6122a
33
Grommet
Strain
Relief
ti6143a
240V
120V
33
33
C
C