Graco E Series Instructions-Parts List Manual page 6

Pressure Relief Procedure
WARNING
INJECTION HAZARD
Fluid under high pressure can be in-
jected through the skin and cause
serious injury. To reduce the risk of an
injury from injection, splashing fluid, or moving
parts, follow the Pressure Relief Procedure
whenever you
D Are instructed to relieve the pressure
D Stop spraying
D Check or service any of the system equipment
D Install or clean the spray tips
1. Engage the gun safety latch.
2. Shut off the power supply to the pump and close
any bleed-type master air valves in the air supply.
3. Disengage the gun safety latch.
4. Hold a metal part of the gun firmly to the side of a
grounded metal pail, and trigger the gun into the
pail to relieve pressure.
5. Engage the gun safety latch.
6. Open the pump fluid drain valve (required in your
system), having a container ready to catch the
drainage.
7. Leave the drain valve open until you area ready to
spray again.
If you suspect that the spray hose is completely
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 completely. Then
clear the tip or hose.
Start Up
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 6.
Whenever you stop spraying for a moment, engage
the gun safety latch. See Fig. 2.
6
307260
Operation
The wallet-sized warning card provided with this
gun should be kept with the operator at all times.
The card contains important treatment information
should an injection injury occur. Additional cards
are available at no charge from Graco Inc.
1. Start the pump. Adjust the fluid pressure so the
spray is completely atomized. ALways use the
lowest pressure necessary to get the desired
results. Higher pressure may not improve the
spray pattern and will cause premature tip and
pump wear.
2. If adjusting the pressure does not give a good
spray pattern, try another tip size. Be sure to
relieve pressure completely before changing tips.
3. Use a full-open, full-close trigger action. Hold the
gun about 14 in. (350 mm) from and at right angles
to the work surface. Do not swing the gun in an
arc. Practice to find the best length and speed of
stroke.
safety latch in
OFF SAFE position
Fig. 2
WARNING
safety latch in
ON SAFE position
03957A