Control Board Replacement - Graco 390 Repair Manual

Control Board Replacement

See Wiring Diagram, page 27.
WARNING
Read Electric Shock Warning, page 3 and Pressure
Relief Procedure, page 7.
Removal
1. Relieve pressure, page 7. Disconnect power cord
from outlet.
2. Remove two screws (30) and shroud (29).
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).
33
30
30
310824C
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.
33
.
Ground wire will remain attached to sprayer with
grounding screw.
8. Remove 2 power cord connectors from control
board.
ti6119a
Control Board Replacement
A
B
33
240V
B
A
120V
19