31
307–785
PRESSURE
CONTROL ADJUSTMENT
Maximum Working Pressure Adjustment
13. Turn the sprayer OFF . Disengage the gun safety
latch.
T
rigger the gun into a grounded waste contain
-
er until pressure is relieved. Engage the gun safety
latch.
14. Use
the 3/8 in. nut driver to turn the pressure adjust
-
ment
nut (T) counterclockwise one full turn.
15. With the pressure control knob at the
minimum
set-
ting,
turn the sprayer ON.
16.
Slowly
turn the pressure control
knob (B) clockwise
to the maximum setting and hold it there. Use a 3/8
in.
nut
driver or socket wrench to slowly turn the pres
-
sure adjustment nut (T) clockwise until the gauge
reads
EXACTL
Y 3000 psi (210 bar).
17. Turn the pressure control knob to the minimum set-
ting.
Release the gun safety latch and trigger the
gun
into
a grounded waste container until
pressure is re
-
lieved.
Engage the gun safety
latch. Slowly increase
the pressure to verify that the maximum working
pressure
is set at 3000 psi (210 bar).
To prevent pump corrosion,
flush the water out of
the
pump, hose
and gun with mineral spirits. Be sure
to close the drain valve, first. Use the lowest
pressure necessary to flush. Follow the Pressure
Relief Procedure Warning on page 24. Leave the
mineral
spirits in the pump to protect it
until you are
ready
to spray again.
CAUTION
18. Install
the plug (17) in the bottom of the pressure con
-
trol. Remove the gauge assembly and reinstall the
plug.
Flush out the water with mineral spirits.
Fig 33–1
Q
P
B
71
T
INSERT
WRENCH HERE
T
O ADJUST NUT (T)
17
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