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Pressure Control Replacement
WARNING
INJECTION HAZARD
To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
Procedure on page 8.
1. Relieve pressure.
2. Disconnect the filter/drain valve assembly and the
pump supply hose at the pressure control while
holding the pressure control fitting (A) firmly. See
the CAUTION, below. See Fig. 18.
CAUTION
Do not allow the fittings (A) to turn when removing or
connecting the hose and filter/drain assembly. Do
not over tighten the screws when attaching the
pressure control board/cover. Turning the fittings or
over tightening the screws may shift the calibration of
the pressure control.
TO GUN
Fig. 18
3. Remove the four mounting screws and washers
(302, 303, 304) from the pressure control board/
cover (301). See Fig. 19.
4. Carefully remove the pressure control board/cover
(301) so as not to stress the cables.
5. Remove the potentiometer cable (310) from the
pressure control board/cover (301).
6. Disconnect the pressure control board/cover
black/white M+ and black M– leads from the motor
+ and– leads.
7. Disconnect the red motor leads from the TS termi-
nals on the pressure control board/cover (301).
8. Disconnect the blue and brown power leads from
the ON/OFF switch.
9. Loosen the earth or ground terminal screw (317)
and disconnect the earth or ground lead (C).
10. Pull off the pressure control board/cover.
301
A
FILTER/DRAIN
VALVE ASSEMBLY
TO PUMP
A
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