Operation - Graco Low-Pressure Tank A Series Instructions-Parts List Manual

WARNING
PRESSURIZED EQUIPMENT HAZARD
This is a pressurized tank. Always follow
the Pressure Relief Procedure on page
5 before opening the tank cover or fill
port. This reduces the risk of serious injury, includ-
ing splashing in the eyes or on the skin, or injury
from moving parts. These injuries can result if the
tank pressure is not fully relieved.
Preparing the Fluid
Prepare the fluid according to the manufacturer's
instructions. Strain the fluid to remove large particles
that could clog the spray gun or the siphon tube.
Filling the Tank
1. Before filling the tank, follow the Pressure Relief
Procedure on page 5.
2. Place fluid into the tank by one of the following
methods:
a. Remove the cover and place a 5-gallon pail of
fluid in the 5-gallon tank (see Dimensions,
page 17).
b. Remove the cover and place a 5-gallon
antistatic polyethylene liner in the 5-gallon
tank. Pour the fluid into the antistatic
polyethylene liner (see Accessories, page
16).
3. Fill the tank through the fill port in the cover, or
remove the cover and pour fluid directly into the
tank. Do not exceed the suggested capacity (5, 10
or 15 gallons) of your tank.
NOTE: If a 5-gallon pail is used inside the tank, an
adjustment is required to the agitator paddle position
to avoid interference. See instruction manual 308371
for adjustment information.
4. Replace the cover or the filler cap (20) and tighten
the c–clamp handles securely.
6 308369

Operation

Operating the Pressure Tank
1. Close the tank air regulator (33) by turning the
knob counterclockwise and turn on the air supply.
See Fig. 2.
2. Open the air inlet ball valve (17).
3. Start and adjust the agitator (if it is used) as
explained in the separate instruction manual
308371.
4. Adjust the tank air regulator (33) to the
approximate pressure desired.
5. Open fluid outlet ball valve (18).
6. Turn on the atomizing air to the air spray gun. Test
spray a small area and adjust the pressure as
necessary. Always use the lowest possible air
pressure to obtain the desired results.
splashing in the eyes or on the skin, and property
damage, never exceed the maximum air and fluid
working pressure of the lowest rated component in
your system.
Do not operate the agitator at a high speed for a long
period of time. Excessive agitator speed can cause
foaming of fluid (making the fluid unusable), vibra-
tion, and increased wear on the parts. Always agitate
the fluid only enough to maintain even mixing.
Safety Relief Valve
A safety relief valve (4) will automatically relieve the
tank pressure when the air pressure exceeds 95 to
100 psi (0.5 to 0.6 MPa, 6.5 to 7 bar). Refer to Fig. 2
or the parts drawings.
Each week, check the working order of the safety relief
valve. Only as a test, raise the air pressure to 95 to
105 psi (0.5 to 0.6 MPa, 6.5 to 7.1 bar). If the safety
relief valve does not relieve the pressure, replace it
immediately. Do not attempt to repair it. The safety
relief valve will reset automatically when the pressure
is relieved.
WARNING
PRESSURIZED EQUIPMENT HAZARD
Overpressurizing the tank or accessories
could cause a part to rupture. To reduce
the risk of serious injury, including
CAUTION