Graco ULTRA 1000 Instructions-Parts List Manual page 27

fluid injection injury or other serious bodily injury which can result from splashing, component rupture,~electric
shock, fire, explosion, or moving parts.
This procedure sets the sprayer to
3000
psi (207 bar)
MAXIMUM WORKING PRESSURE. This orocedure
must be performed whenever a new or uied circui
board, or pressure control assembly is removed and
reinstalled or replaced, to be sure the sprayer is pro-
perly calibrated.
Improper calibration can cause the sprayer to over-
pressurize and result in component rupture, fire or
explosion. It may also prevent the sprayer from ob-
taining the maximum working Dressure which would
result-in poor sprayer performance.
Calibration Setup (See Fig 21 and
2 2 )
1. Follow the Pressure Relief Procedure Warning on
page 13. Remove the spray hose and gun. Install a
0.015 spray tip in the gun. Connect the gun to the
new tes? 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 3/8" ignition wrench to turn the pressure ad-
justment nut (SI 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.
THE SPRAYER SHOULD NOT STARTI
lf
it
does stert, shut the sprayer switch OFF,
disengage the gun safety latch, trigger the gun into a
grounded waste container until pressure is relleved.
justment nut
(S)
a little further counterclockwise.
Engage the gun safety latch. Turn the pressure ad-
Turn the sprayer on to be sure it does not start.
8. 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 pressurd adjust-
ment nut (SI clockwise until the test gauge reads
EXACTLY
3OW
psi (207 bar).
9. The calibration procedure is now completed.
WARNING
on page 13.
Follow the Pressure Relief Procedure Warnlng
CAUTION
the pump, hose end gun with mineral spirits.
Be
Topreventpump corrosion, flush the water out of
sure to close the drain valve, first. Use the lowest
pressure necessary to flush. Follow the Pressure
Relief Procedure Warning on page 13. Leave
.the mineral spirits in the pump to protect
it
until
you are aready to spray again.
NEVER attempt to increase the fluid outlet pressure
by performing this calibration in any other way.
NEVER EXCEED 3OOO psi (207 bar) MAXIMUM
sprayer at higher pressures could result in compo-
WORKING PRESSURE. Normal operation of the
nent rupture, fire or explosion.
AVOID touching the wires in the pressure control
assembly with your fingen or tools when the control
box cover is removed to reduce the risk of electric
shock.
W
Fig 21
R g 22
10.Remove the test gauge assembly and reinstall the
plug. Flush out water with minerel spirits.
307-786
27
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