308116 7
Installation
NOTE: Reference numbers and letters in parentheses
in the text refer to the callouts in the figures and the
parts drawing.
If you supply your own accessories, be sure they are
adequately sized and pressure–rated to meet the
system’s requirements.
The Typical Installation shown on page 5 is only a
guide for selecting and installing system components
and accessories. Contact your Graco distributor for
assistance in designing a system to suit your particular
needs.
System Accessories
Refer to the Typical Installation on page 5.
WARNING
A bleed–type master air valve (D) and a fluid drain
valve (J) are required in your system. These acces-
sories help reduce the risk of serious bodily injury
including fluid injection, splashing in the eyes or on
the skin, and injury from moving parts if you are
adjusting or repairing the pump.
The bleed–type master air valve relieves air
trapped between this valve and the pump after the
air is shut off. Trapped air can cause the pump to
cycle unexpectedly. Locate the valve close to the
pump.
The fluid drain valve assists in relieving fluid pres-
sure in the displacement pump, hose, and gun.
Triggering the gun to relieve pressure may not be
sufficient.
Mounting Accessories
Mount the pump (A) to suit the type of installation
planned. Refer to the Dimensions and Mounting
Hole Layout page 24.
Air and Fluid Hoses
Be sure all air and fluid hoses are properly sized and
pressure–rated for your system. Use only grounded air
and fluid hoses. Fluid hoses must have spring guards
on both ends.
Connect a grounded fluid hose (L) to the pump’s fluid
outlet.
Connect a fluid suction hose (N) to the pump’s 3/4
npt(f) fluid intake.
Use a grounded 1/2 in. I.D. (minimum) air hose (H) to
supply air to the pump.
Air Line Accessories
Install the following accessories in the order shown in
the Typical Installation, using adapters as necessary:
An air line lubricator (C) provides automatic air
motor lubrication.
A bleed–type master air valve (D) is required in your
system to relieve air trapped between it and the air
motor when the valve is closed (see the Warning at
left). Be sure the bleed valve is easily accessible from
the pump, and is located downstream from the air
regulator.
A pump runaway valve (B) senses when the pump is
running too fast and automatically shuts off the air to
the motor. A pump which runs too fast can be seriously
damaged.
An air regulator (E) controls pump speed and outlet
pressure by adjusting the air pressure to the pump.
Locate the regulator close to the pump, but upstream
from the bleed–type master air valve.
An air line filter (F) removes harmful dirt and mois-
ture from the compressed air supply.
A second bleed–type air valve (G) isolates the air
line accessories for servicing. Locate upstream from all
other air line accessories.
Fluid Line Accessories
Install the following accessories in the positions shown
in the Typical Installation, using adapters as neces-
sary:
A fluid drain valve (J) is required in your system to
relieve fluid pressure in the hose and gun (see the
Warning at left). Install the drain valve pointing down,
but so the handle points up when opened.
A fluid filter (K) filters harmful particles from the fluid.
A spray gun (M) dispenses the fluid. The gun shown
in the Typical Installation is an airless spray gun.
