Graco A Series Instructions-Parts List Manual page 5

NOTE: Reference numbers and letters in parentheses
in the text refer to the callouts in Figures 1, 2, and 3,
and the Parts Drawings.
Accessories are available from Graco. Be sure all
accessories are properly sized to withstand the pres-
sures in the system.
Mount Valve
Mount the valve on a 0.50 in. (12.7 mm) diameter rod
on a mounting fixture or a dispensing machine. The
paint gun has a clamping set screw (6) for mounting.
Connect the Air Lines
Clean all lines and connections of dirt, burrs, etc. and
blow them out with clean air before connecting them to
the system. Install an air filter in the air supply line to
remove harmful dirt and moisture from the compressed
air.
Connect the Fluid Lines
Connect a grounded fluid line from the pump to the
fluid inlet adapter of the paint spray gun. You should
install a fluid pressure regulator to control fluid pres-
sure to the paint spray gun. A regulator enables you to
control fluid pressure more accurately than by regulat-
ing hydraulic pressure to the pump.
Install a fluid filter to remove particles and sediment
which may clog the tip.
6 308613
Installation
Flush the System
Before flushing, always follow the Pressure Relief
Procedure on page 7. Start the pump and flush the
system with a compatible solvent as explained in the
instructions for your pump. Check the system under
pressure for leaks; if any are found, follow the Pres-
sure Relief Procedure on page 7 and repair the
leaks. Pressurize the system again and make sure the
leaking has stopped.
Grounding
Proper grounding is essential to maintaining a safe
system.
To reduce the risk of static sparking, ground the pump,
paint spray gun and all other system equipment.
1. Pump: use a ground wire and clamp.
2. Air compressors and hydraulic power supplies:
follow manufacturer's recommendations.
3. Air and fluid hoses connected to the pump: use
only grounded hoses with a maximum of 500 feet
(150 m) combined hose length to ensure ground-
ing continuity.
4. Dispensing valve: obtain grounding through con-
nection to a properly grounded fluid hose and
pump.
5. Fluid supply container: according to local code.
6. All solvent pails used when flushing: ground ac-
cording to local code. Use only metal pails, which
are conductive. Do not place the pail on a non-
conductive surface, such as paper or cardboard,
which interrupts the grounding continuity.