Operation - Graco ULTRA 500 Instructions-Parts List Manual

OPERATION
WARNING
To reduce the risk of serious bodily injury,
in-
Preaaure Rellef Procedure
cluding fluid injection or splashing in the eyes or on
the skin, or injury from moving parts or electric
shock, always follow this procedure whenever you
shut off the sprayer, when .checking or servicing
any part of the spray system, when installing,
stop spraying.
cleaning or changing spray tips, and whenever you
2.
Turn the ON/OFF switch to OFF.
1. Engage the gun safety latch.
3. Unplug the power supply cord.
4. Disengage the gun safety latch.
6. Hold a metal part of the gun firmly to the side of
a
metal pail, and trigger the gun to relieve
preasure.
tainer ready to catch the drainage.
are ready to operate the sprayer again.
6. Engage the gun safety latch.
7. Open the pressure relief valve, having
a con-
8. Leave the pressure relief valve open until you
I f you suspect that the spray tip
or
hose
is com-
pletely clogged, or that pressure has not been fully
relieved
after
following the steps above,
VERY
SLOWLY loosen the tip guard retaining nut or
hose end coupling and relieve pressure gradually.
Then loosen the nut completely. Now clear the tip
or hose obstruction.
Prime the Sprayer w i t h Paint.
J
e. Close the filter's pressure relief valve. See Fig 2.
b. Don't install the spray tip yet1
c. Put the suction tube into the paint container.
d. Turn the pressure adjusting knob all the way
counterclockwise to lower the pressure setting.
e. Disengage the gun safety latch.
f.
Hold a metal part of the gun firmly against and
aimed into a metal waSte container. See Fig 5.
Squeeze the trigger and hold
it
open, turn the
ON/OFF switch to ON, and slowly increase the
pressure setting until the sprayer starts. This
procedure reduces the risk of static electric
discharge and splashing. Keep the gun trig-
gered until all air is forced out of the system and
the paint flows freely from the gun. Release the
trigger and engage the safety.
NOTE:
If the pump is hard to prime, place a con-
tainer under the pressure relief valve and
open
it.
When fluid comes from thevalve,
close it. Then disengage the gun safety
latch end proceed as in Step If, above.
g.
Check all fluid connections for leaks. If any are
found, follow the Pleasure Rellef Procedure
Warning, above, then tighten connections.
METALTO METAL
MAINTAIN FIRM
GUN AND CONTAINER
CONTACT BETWEEN
Fig 5
2.
Install
the Spray Tip end Tip Guard
a. Be sure the gun safety latch is engaged.
b. Install the spray tip. If using the RAC IV, refer
to manual 307-848, supplied with the gun, for
installation instructions.
3.
Adjusting the Spray Pattern
a. Increase the pressure adjusting knob setting
just until'spray from the gun is completely
atomized. To avoid excessive overspray and
fogging, and to decrease tip wear and extend
the l i e of the sprayer, always use the lowest
possible pressure needed to get the desired
results.
b. If more coverage is needed, use e larger tip
rather than increasing the pressure.
c. Test the spray pattern. To adjust the direction
of the spray pattern, engage the gun safety
latch and loosen the retaining nut. Position the
tip guard horizontally. for a horizontal pattern
the retaining nut.
or vertically, for a vertical pattern. Then tighten
4. Operating Tlps. .The'se suggestions will help pre-
vent the motor from running too hot or operating
intermittently.
'a. Decrease the pressure when using
a
small tip.
b. Keep the sprayer in
a
shaded area when spray-
c. Turn off the sprayer and relieve pressure
.
...
ing outdoors.
whenever you stop spraying.
10 307-758