Graco 234192, Instructions Manual

Page: 6 / 30

6 309668
Installation
Air Line
A bleed-type master air valve (B) is required in
your system to relieve air trapped between this
valve and the pump. Trapped air can cause the
pump to cycle unexpectedly, which could result in
serious injury, including splashing in the eyes or on
the skin, injury from moving parts, or contamination
from hazardous fluids.
WARNING
CAUTION
The pump exhaust air may contain contaminants.
Ventilate to a remote area if the contaminants
could affect your fluid supply. See Air Exhaust
Ventilation on page 8.
1. Install the air line accessories. Mount these
accessories on the wall or on a bracket. Be sure
the air line supplying the accessories is grounded.
a. The fluid pressure can be controlled in either
of two ways. To control it on the air side, install
an air regulator (H). To control it on the fluid
side, install a fluid regulator (M) near the pump
fluid outlet.
b. Locate one bleed-type master air valve (B)
close to the pump and use it to relieve trapped
air. See the WARNING above. Locate the
other master air valve (E) upstream from all air
line accessories and use it to isolate them
during cleaning and repair.
c. The air line filter (F) removes harmful dirt and
moisture from the compressed air supply.
2. Install an electrically conductive, flexible air hose
(C) between the accessories and the 1/4 npt(f)
pump air inlet. Use a minimum 1/4” (6.3 mm) ID air
hose. Screw an air line quick disconnect coupler
(D) onto the end of the air hose (C), and screw the
mating fitting into the pump air inlet snugly. Do not
connect the coupler (D) to the fitting yet.
Fluid Suction Line
D The pump fluid inlet is 3/8 npt(f). See Fig. 2.
Screw the fluid fitting into the pump inlet snugly.
Use a compatible liquid thread sealant or PTFE
tape on connections to prevent air from getting into
material line.
D At inlet fluid pressures greater than 15 psi (0.1
MPa,1 bar), diaphragm life will be shortened.
D See the Technical Data on page 27 for maximum
suction lift and flow rate loss at various lift dis-
tances.
Fluid Outlet Line
WARNING
A fluid drain valve (J) is required in your system to
relieve pressure in the hose if it is plugged. The
drain valve reduces the risk of serious injury,
including splashing in the eyes or on the skin, or
contamination from hazardous fluids when relieving
pressure. Install the valve close to the pump fluid
outlet.
D Use electrically conductive fluid hoses (N). The
pump fluid outlet is 3/8 npt(f). See Fig. 2. Screw the
fluid fitting into the pump outlet snugly.
D Install a fluid regulator (M) at the pump fluid outlet
to control fluid pressure, if desired. See Air Line,
step 1a, for another method of controlling pressure.
D Install a fluid drain valve (J) near the fluid outlet.
See the WARNING above.