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Installation
Air Supply Lin
e
To reduce the risk of electric shock, the air supply
hose must be electrically connected to a true earth
ground. Use only Graco Grounded Air Supply
Hose.
1. See Fig. 10. Use the Graco Grounded Air Supply
Hose (AH) to supply air to the gun. The gun air
inlet fitting has a left-hand thread. The air supply
hose ground wire (AG) must be connected to a
true earth ground. Do not connect the air supply
hose to the gun air inlet yet.
2. Install an air line filter/water separator (AF) on the
gunairlinetoensureadry,cleanairsupplytothe
gun. Dirt and moisture can ruin the appearance
of your finished workpiece and can cause the
gun to malfunction.
To reduce the risk of serious injury due to
component rupture, including skin injection,
pump pressure must be limited by the pump air
regulator. Do not rely on the gun fluid regulator
tolimitthefluidpressuretothegun.
The flu
id supply pump must be prevented from
produ
cing a fluid pressure greater than the
3000 p
si (21 MPa, 210 bar)
Maximum Working
Fluid
Pressure
of the gun. For example, the air
supp
ly pressure to a 30:1 ratio pump must not
exce
ed 100 psi (0.7 MPa, 7 bar).
3. Install bleed-type air regulators (PR, GR) on
the pump and gun air supply lines to control air
pressure to the pump and gun.
Trapped air can cause the pump to cycle
unexpectedly, which can result in serious
injury, including skin injection and splashing
fluid in the eyes or on the skin. Do not operate
the equipment without the bleed-type air valve
(BV) installed.
4. Install a blee
d-type air valve (BV) on the pump
air supply lin
e. The bleed-type air valve (BV) is
required in yo
ur system to shut off air to the pump
and relieve a
ir trapped between the valve and
the pump afte
r the air regulator is shut off. Install
an additiona
l bleed-type air valve on the main air
line(MA)toi
solate the accessories for servicing.
5. Install an a
ir bleed valve (BV) on each gun air
supply line
to shut off air to the gun(s) and relieve
air trapped
between the valve and the gun after
the air reg
ulator is shut off.
Fluid Supply Line
1. Blow out t
he fluid line (FL) with air and flush it
with solv
ent. Use solvent which is compatible
with the fl
uid to be sprayed. Do not connect the
fluid supp
lylinetothegunfluidinletyet.
2. Install
a fluid pressure regulator (FR) on the fluid
linetoc
ontrol fluid pressure to the gun.
3. Install
a fluid filter (FF) near the pump outlet, to
remove
particles and sediment which could clog
the spr
ay nozzle.
NOTE: T
he gun includes an inline fluid filter for
additi
onal filtration.
To reduce the risk of serious injury, including
skin injection and splashing fluid in the eyes or
on the skin, do not operate equipment without
the fluid drain valve (FD) installed.
4. Thefluiddrainvalve(FD)isrequiredinyour
system to assist in relieving fluid pressure in the
displacement pump, hose, and gun. Triggering
the gun to relieve pressure may not be sufficient.
Install a drain valve close to the pump's fluid
outlet.
16 3A2495C