23
820-007
Pressure Control Adjustment
Fig. 18
F
H
G
TIGHTEN
123
0750
85
6.
Check to see at what pressure the sprayer starts
to run again after it stalls. Plug in the sprayer, turn
it on, close the needle valve, and set the pressure
at maximum. Allow the sprayer to run until it stalls.
7.
Open the needle valve very slowly while observing
the pressure gauge. Check to see if the pressure
drops to approximately 2100 psi (147 bar) before
starting again.
If the pressure is not
2100 psi (147 bar): Shut off
and unplug the sprayer, but do not relieve the
pressure. Turn the differential wheel (G) just one
notch and repeat Steps 5 and 6. Check the pres-
sure drop again and repeat if necessary.
NOTE: Always recheck the stall pressure (steps 5, 6) if
the differential wheel was adjusted.
8.
Follow the Pressure Relief Procedure Warning
on page 4. Flush the water out with mineral spir-
its. Relieve the pressure again. Install the plug
(123) and cover (79 –
not shown). Remove the test
equipment.
Summary of Contents for 820-001
Page 3: ...3 820 007 Notes...
