Graco G Series Instructions-Parts List Manual page 6

System Accessories
Refer to Fig. 2 and the Accessories section.
NOTE: To ensure maximum pump performance, be sure
that all accessories used are properly sized to meet your
system's requirements.
WARNING
A bleed-type master air valve (D) and a fluid drain valve
(E) are required in your system, to help reduce the risk
of serious injury, including splashing fluid 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 (D) relieves air trapped
between this valve and the pump after the pump is shut
off. Trapped air can cause the pump to cycle
unexpectedly and result in serious injury, including
amputation. Locate the valve close to the pump.
The fluid drain valve (E) helps relieve pressure in the
displacement pump, hose, and dispensing valve when
shutting off the pump. Actuating the dispensing valve to
relieve pressure may not be sufficient, especially if there
is a clog in the hose or the dispensing valve.
Air Line Accessories
Install the following accessories in the order shown in the
Typical Installation, using adapters as necessary:
• An air line lubricator (B) 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
above). Be sure the bleed valve is easily accessible
from the pump, and is located downstream from the
air regulator.
• An air regulator (A) 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.
6 307026
Installation
• An air line filter (C) removes harmful dirt and
moisture from the compressed air supply.
• A second bleed-type air valve (D) isolates the air
line accessories for servicing. Locate upstream from
all other air line accessories.
Fluid Line Accessories
A fluid drain valve (E) 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 the valve is opened.
CONNECT THE HOSES
Connect a grounded air supply hose (G) to supply air to
the pump's 1/4 npt(f) air inlet (K). Connect a grounded fluid
hose (H) to the 1/2 npt(f) fluid outlet (M). In a circulating
system, remove the pipe plug and connect a fluid return
line to the 3/8 npt(f) return port (F). See Fig. 3 and the
Typical Installation drawing, Fig. 2.
To use Model 223954 in a fixed mounting, connect a
supply line to the 3/4 npt fluid inlet (J).
Fig. 3
K
F
M
PIPE
PLUG