308147
11
Installation
(HYDRAULIC-POWERED PUMPS)
SYSTEM ACCESSORIES
WARNING
A fluid drain valve (M) is required in your system.
This accessory helps reduce the risk of serious
bodily 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 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.
Mounting Accessories
Mount the pump (A) to suit the type of installation
planned. Fig. 4 illustrates a wall-mounted system.
Pump dimensions and the mounting hole layout are
shown on pages 36 and 37.
Filters
Be sure your hydraulic power supply is equipped with a
suction filter to the hydraulic pump and a system return
line filter (AA) of 10 micron size.
Carefully follow the manufacturer’s recommendations
on reservoir and filter cleaning, and periodic changes
of hydraulic fluid. Use only Graco-approved hydraulic
oil. Order Part No. 169236, 5 gal. (19 liter) or 207428,
1 gal. (3.8 liter). Do not substitute a lower grade oil or
one with a lower flash point.
Hydraulic Lines
The motor has a 3/4 npt(f) hydraulic oil supply fitting,
and a 1 in. npt(f) hydraulic oil return fitting. Use a
minimum 13 mm (1/2 in.) ID hydraulic supply line, and
a minimum 22 mm (7/8 in.) ID return line.
On the hydraulic supply line (C), install the following
accessories in the order shown in Fig. 4, using adapt-
ers as necessary:
D
A shutoff valve (U) isolates the pump for service.
D
A fluid pressure gauge (F) to monitor hydraulic
oil pressure to the motor and to avoid overpressur-
izing the motor or displacement pump, and a pres-
sure- and temperature-compensated flow con-
trol valve (G) to prevent the motor from running
too fast and possibly damaging itself.
D
A pressure reducing valve (H), with a drain line
(E) run directly to the hydraulic return line (D).
D
An accumulator (J) to reduce the hammering ef-
fect caused by the motor reversing direction.
D
A shutoff valve (V) isolates the pump for service.
D
A filter (AA) of 10 micron size.
Hydraulic Motor Drip Pan
The hydraulic motor has a drip pan to collect any
leakage. Connect a 6 mm (1/4 in.) ID drain line (K) to
the barbed fitting on the drip pan, and place the free
end in a container to receive the drainage.
Fluid Supply Hoses
Be sure all fluid supply hoses (N and P) are properly
sized and pressure-rated for your system. Use only
electrically conductive hoses. Fluid hoses must have
spring guards on both ends. Use a whip hose (P) and
a swivel (R) between the main fluid hose (N) and the
gun/valve (S) to allow freer gun/valve movement.
Fluid Line Accessories
Install the following accessories in the positions shown
in Fig. 4, using adapters as necessary:
D
A fluid filter (L) with a 60 mesh (250 micron)
stainless steel element, to filter particles from the
fluid as it leaves the pump. It includes a fluid
drain valve (M), which is required in your system
to relieve fluid pressure in the hose and gun (see
the WARNING at left).
D
A gun or valve (S) dispenses the fluid. The gun
shown in Fig. 4 is an airless spray gun for light to
medium viscosity fluids.
D
A gun swivel (R) allows freer gun movement.
D
A suction kit (T) allows the pump to draw fluid
from a 200 liter (55 gallon) drum.
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