Graco Husky 716 Instructions-Parts List Manual page 7

Air Line
WARNING
An air line quick coupler (B) is required in your
system to relieve air trapped between this valve
and the pump. See Fig. 2. 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.
CAUTION
Before connecting the permanent air line to the
regulator (A), blow out all lines with air to remove
contaminants that can clog or damage the regulator,
hose, or pump air valve.
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 9.
1. Install the air line accessories as shown in Fig. 2.
Mount these accessories on the wall or on a bracket.
Be sure the air line supplying the accessories is
electrically conductive and bonded.
2. Use the air regulator (A) to control the pump fluid
outlet pressure. The fluid pressure will be the same
as the setting on the regulator gauge.
3. Install an electrically conductive, flexible air hose (J)
between the regulator (A) and the 1/4 npt(f) pump air
inlet (air restrictor in evacuation applications). Use a
minimum 1/4 in. (6.3 mm) ID air hose. Screw an air
line quick disconnect coupler (B) onto the end of the
air hose (J), and screw the mating fitting into the
pump air inlet snugly. Do not connect the coupler (B)
to the fitting yet.
Installation
Fluid Supply Line
•
Use electrically conductive fluid hoses (J or F). Be
sure the lines are bonded all the way from the fluid
supply to the grounded pump.
•
The pump fluid inlet is 3/4 npt(f). See Fig. 4. Screw
the fluid fitting into the pump inlet snugly. Do not
overtighten.
•
For the Gear Oil Evacuation System, install a control
valve (D) and an appropriate wand (E). See Fig. 2.
•
For the Waste Oil Receiver Evacuation System,
connect an appropriate suction hose (F) and fluid
quick coupler (G) between the pump fluid inlet and
the waste oil receiver (M). See Fig. 3.
•
If the inlet pressure to the pump is more than 25% of
the outlet working pressure, the ball check valves will
not close fast enough, resulting in inefficient pump
operation.
•
At inlet fluid pressures greater than 15 psi (100 kPa,
1.0 bar), diaphragm life will be shortened.
Fluid Outlet Line
A fluid drain valve (C) is required in your system to
relieve pressure in the hose if it is plugged. See
Figs. 2 and 3. 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.
•
Use electrically conductive fluid hoses (L). Be sure
the lines are bonded all the way from the grounded
pump to the waste storage tank.
•
The pump fluid outlet is 3/4 npt(f). See Fig. 4. Screw
the fluid fitting into the pump outlet snugly. Do not
overtighten.
•
Install a fluid drain valve (C) near the fluid outlet. See
the WARNING above.
•
Also read Fluid Pressure Relief Valve, on page 8.
WARNING
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