6 308017
Installation
General Information
NOTE: Reference numbers and letters in parentheses
in the text refer to the callouts in the figures and the
parts drawings.
NOTE: Always use Genuine Graco Parts and Acces-
sories, available from your Graco distributor. Refer to
the Product Data Sheet, Form No. 305546. If you
supply your own accessories, be sure they are ade-
quately sized and pressure-rated to meet the system’s
requirements.
Fig. 1 is only a guide for selecting and installing sys-
tem components and accessories. Contact your Graco
distributor for assistance in designing a system to suit
your particular needs.
System Accessories
WARNING
A red-handled main air bleed valve (V), pump air
bleed valve (G), and fluid drain valve (L) are re-
quired. These accessories help reduce the risk of
serious injury, including fluid injection and splashing
of fluid in the eyes or on the skin, and injury from
moving parts if you are adjusting or repairing the
pump.
The red-handled main air bleed valve (V) shuts off
and relieves the air to the pump and ram. Order
Part No. 113269 for Monark and President Pumps,
or 113218 for Senator and Bulldog Pumps. The
ram will hold pressure if the ram director valve (U)
is in the horizontal (neutral) position. To relieve air
pressure in the ram, close the red-handled bleed
valve (V) and move the director valve (U) to
DOWN. The ram will slowly drop.
The pump air bleed valve (G) relieves air trapped
between it and the pump after the air is shut off.
Trapped air can cause the pump to cycle unexpect-
edly. Locate the valve close to the pump.
The fluid drain valve (L) assists in relieving fluid
pressure in the displacement pump, hose, and gun.
Triggering the gun to relieve pressure may not be
sufficient. Order Part No. 210658 (3/8 npt).
Air Line
Install the following accessories as shown in Fig. 1,
using adapters as necessary:
D A red-handled main air bleed valve (V) is re-
quired in your system to shut off the air supply to
the pump and ram (see the WARNING at left).
When closed, the valve will bleed off all air in the
ram and pump, and the ram will slowly drop. Be
sure the valve is easily accessible from the pump,
and is located upstream from the air manifold (D).
D The pump air bleed valve (G) 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 valve is easily accessible from
the pump, and is located downstream from the air
regulator (H).
D The pump air regulator (H) 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 pump air bleed valve (G).
D An air line lubricator (F) provides automatic air
motor lubrication.
D A pump runaway valve (E) 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.
D An air manifold (D) has a swivel air inlet. It has
ports for connecting lines to air accessories, such
as the ram air regulator (T), which controls the air
pressure to the ram.
D The air pressure relief valve (Q) limits the air
pressure to the ram to 10 bar (150 psi).
D The ram director valve (U) controls the raising
and lowering of the ram.
D An air line filter (J) removes harmful dirt and
moisture from the compressed air supply. Also,
install a drain valve (W) at the bottom of each air
line drop, to drain off moisture.
D A bleed-type air valve (K) isolates the air line
accessories for servicing. Locate upstream from all
other air line accessories.
