Graco ULTRA 1000 Instructions-Parts List Manual page 27

STALL PRESSURE CALIBRATION
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fluid injection injury or other serious bodily injury which can result from splashing, component rupture, electric
USE EXTREME CAUTION WHEN PERFORMING THIS CALIBRATION PROCEDURE to reduce the risk of a
shock, fire, explosion,
or
moving parts.
This procedure sets the sprayer to
3W0 psi (207 bar)
NEVER attempt
to
increase the fluid outlet pressure
must be performed whenever a new or used circuit
MAXIMUM WORKING PRESSURE. This procedure by performing this calibration in any other way.
board, or pressure control assembly is removed end
NEVER EXCEED
3ooo psi (207 bar) MAXIMUM
WORKING, PRESSURE. Normal operation of the
reinstalled or replaced, to be sure the sprayer is pro-
perly calibrated.
sprayer et higher pressures could result in compo-
nent rupture, fire or explosion.
Improper calibration can cause the sprayer to over-
pressurize and result in component rupture, fire or assembly with your fingers or tools when the control
AVOID touching the wires in the pressure control
explosion.
It
may also prevent the spreyer from ob-
taining the maximum working pressure which would
box cover is removed to reduce the risk of electric
shock.
result in poor sprayer performance.
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Calibration Setup (See Fig 21 and 22)
"
1. Follow the Pressure Relief Procedure Warning on
page 13. Remove the spray hose and gun. Install e
0.015" spray tip in the gun. Connect the gun to the
new test hose and connect the hose to the sprayer
outlet.
2. Remove the pressure control screws and cover.
3. Remove the plug from the top of the fluid filter, and
4. Place the pump suction tube in a 5 gallon pail of
5. Be sure the gun safety latch is engaged.
6. Use
a
318" ignition wrench to turn the pressure ad-
justment nut (S) counterclockwise about two full
turns. See Fig
22.
7. With the pressure control knob at the
minimum
set-
ting, turn the sprayer switch ON.
install the test gauge (W).
clean water.
THESPRAYERSHOULDNOTSTARTI
If it does start, shut the sprayer switch OFF,
disengage the gun safety latch, trigger the gun
into a
grounded waste container until pressure is relieved.
justment nut (SI
e
little further counterclockwise.
Engege the gun safety latch. Turn the pressure ad-
Turn the sprayer on to be sure
it
does not start.
0. Slowly turn the pressure control knob clockwise to
the maximum setting and hold
it
there. Use a
3/8"
ignition wrench to slowly turn the pressure edjust-
ment nut
(SI
clockwiseuntil the test gauge reads
EXACTLY
3000
psi (207 bar).
9. The calibration procedure is now completed.
WARNING
on page 13.
Follow the Pressure Relief Procedure Warning
CAUTION
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
the mineral spirits in the pump to protect
it
until
Relief Procedure Werning on page 13. Leave
you are aready to spray again.
Fig
22
10.Remove the test gauge assembly end reinstall the
plug. Flush
o u t
water with mineral spirits.
307-785
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