WARNING
Always follow the Pressure Relief Procedure War-
ning on page 12 before checking or repairing any
parts.
Pressure Control Removal and Replacement
WARNING
Do not alter the factory adjusted pressure switch
(M).
Changing the setting may cause unsafe high
pressure or poor performance.
\
CAUTION
/)
Never attempt to remove the swivel adapter (N) or
nipple (P) from the pressure control. Any twisting
or jarring of the pressure control fitting could alter
the factory setting of the control, or permanently
damage the control. When removing the fluid
filter (64) or fluid hose (11, hold the swivel adapter
(N) or nipple (P) secure with a wrench.
Remove the fluid hose (1) from the pressure control
(74). Disconnect the conduit (98) and wires (K) from the
motor
(Q).
Refer to Fig 11. Then remove the three
capscrews (78) holding the control to the gearcase.
Unless the cover plate (73) or mounting bracket (75) is
damaged, only the pressure control switch assembly
(74) needs to be replaced. In that case, remove the filter
and covers from the old assembly.
Use screws (76) to install the mounting bracket onto the
switch assembly, and use screws (79) to install the front
cover. Position the assembly onto the gearcase cover,
and use screws (78) to secure it. Connect the conduit
and wires to the motor, install the fluid filter, and recon-
nect the hoses. Calibrate the pressure control before
operating the sprayer. See page 15.
Circuit Board Removal and Replacement
If the circuit board (85) is all that needs to be replaced in
the pressure control, remove the screws (79) and the
front cover (73). See Fig 11. Pull the board out carefully,
just far enough to reach the wire terminals. Unsnap the
wires and finish removing the board.
Position the new card at the control so the wire connec-
tors are at the top. Following the color coded diagram in
Fig 11, snap the wires onto the board. Carefully guide
the wires back into the control, making sure they don’t
get caught on anything, then slide the new board into
place. Calibrate the pressure control before operating
the sprayer. See page 15.
16 307460
To Next Page
Loading...
