Graco Ratio President Hydra-Spray 222-294, Instructions-Parts List Manual

Page: 6 / 28

6 307–934
Setup
Supplied Components and Accessories
Refer to Figure 2.
WARNING
A bleed-type master air valve (27) and a fluid drain
valve (13) are required, to 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 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.
The main air line filter (A)
removes harmful dirt
and moisture from 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.
The air line lubricator (C) provides automatic
lubrication of air motor.
The fluid drain valve (13)
assists in relieving fluid
pressure in displacement pump, hose, and gun.
Triggering gun only, may not be sufficient to relieve
pressure.
The air relief valve (15)
opens automatically to
relieve air pressure to pump if pressure exceeds a
preset level. This valve prevents overpressurization
of spray gun
The air regulators (18) control pump speed and
outlet pressure by adjusting air pressure to pump.
The right air regulator controls air pressure to
pump. The left air regulator controls air pressure to
gun.
The bleed–type master air valve (27)
relieves air
trapped between this valve and pump. See the
WARNING
at left. Trapped air can cause pump to
cycle unexpectedly.
To bleed air from pump, right
air regulator (18) must be open when master air
valve is closed.
06776A
KEY
A Air Line Filter
B
Main Air Line
C
Air Line Lubricator
D
Fluid Hose
E
Spray Gun
F Gun Air Supply Hose
G Bleed–Type Air Valve
Y Ground Wire
1 Pump
8 Fluid Filter
13 Drain Valve (Required)
15 Air Relief Valve
18
Air Regulators
23
Suction Kit
27
Bleed–Type Master Air
Valve (Required)
B
C
D
E
F
Y
1
8
13
15
18
18
23
27
G
Fig. 2
A