Installation
Air Supply Lin
e
To reduce the
risk of electric shock, the air supply
hose must be e
lectrically connected to a true earth
ground. Use o
nly 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 fittin
g has a left-hand thread. The air supply
hose groun
d 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
gun air li
ne to ensure a dry, clean air supply to the
gun. Dirt
and moisture can ruin the appearance
of your fin
ished workpiece and can cause the
guntomal
function.
3. Install
bleed-type air regulators (PR, GR) on
the pump
and gun air supply lines to control air
pressur
e to the pump and gun.
Trappe
daircancausethepumptocycle
unexpe
ctedly, which can result in serious
injury
, including splashing fluid in the eyes or
on the
skin. Do not operate the equipment
witho
ut the bleed-type air valve (BV) installed.
4. Install a bleed-type air valve (BV) on the pump
air supply line. The bleed-type air valve (BV) is
required in your system to shut off air to the pump
and relieve air trapped between the valve and
the pump after the air regulator is shut off. Install
an additional bleed-type air valve on the main air
line (MA) to isolate the accessories for servicing.
5. Install an air 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 regulator is shut off.
Fluid Supply L
ine
1. Blow out the fluid line (FL) with air and flush it
with solvent. Use solvent which is compatible
with the fluid to be sprayed. Do not connect the
fluidsupplylinetothegunfluidinletyet.
2. Install a fluid regulator (FR) on the fluid line to
control fluid pressure to the gun.
3. Install a fluid filter (FF) near the pump outlet, to
remove particles and sediment which could clog
the spray nozzle.
To reduce t
he risk of serious injury, including
splashing
fluid in the eyes or on the skin, do
not opera
te 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 3A2494E
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