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SYSTEM ACCESSORIES
WARNING
A fluid drain valve (M) is required in your system to
help reduce the risk of serious injury, including fluid
injection and splashing of fluid in the eyes or on the
skin 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 on page 10 illustrates a ram-mounted
pump in a multi-gun header system. Pump dimensions
and the mounting hole layout are shown on pages 36
and 37.
If you are mounting the pump on a air-powered ram,
refer to the separate ram manual for installation and
operation instructions, and recommended air accesso-
ries.
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" npt(f) hydraulic oil return fitting. Use a mini-
mum 13 mm (1/2 in.) ID hydraulic supply line, and a
minimum 16 mm (5/8 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) to isolate the pump for servic-
ing.
D A fluid pressure gauge (F) to monitor hydraulic oil
pressure to the motor and to avoid overpressurizing
the motor or displacement pump, and a pressure-
and temperature-compensated flow control
valve (G) to prevent the motor from running too
fast and possibly damaging itself.
Installation
(HYDRAULIC-POWERED PUMPS)
D A pressure reducing valve (H), with a drain line
D An accumulator (J) to reduce the hammering
On the hydraulic return line (D), install the following
accessories in the order shown in Fig. 4, using adapt-
ers as necessary:
D A shutoff valve (V) to isolate the pump for servic-
D A filter (AA) of 10 micron size.
Hydraulic Motor Drip Pan
The hydraulic motor has a drip pan to collect any
leakage that may occur. Connect a 6 mm (1/4 in.) ID
drain line (K) to the barbed hose fitting on the drip pan,
and place the free end in a suitable container to re-
ceive the drainage.
Fluid Supply Hoses
Be sure the fluid supply hose (N) is properly sized and
pressure-rated for your system. Use only electrically
conductive hoses. Fluid hoses must have spring
guards on both ends.
Fluid Line Accessories
Install the following accessories in the positions shown
in Fig. 4, using adapters as necessary:
D Install a fluid shutoff valve (P) at each gun drop,
D Install a fluid drain valve (M) near the pump fluid
D A fluid regulator (L) controls fluid pressure to the
D A gun or valve (S) dispenses the fluid. The gun
D A gun swivel (R) allows freer gun movement.
(E) running into the hydraulic return line (D).
effect caused by the motor reversing direction.
ing.
to isolate the gun and fluid accessories for servic-
ing.
outlet, and at each gun station. The drain valves
are required in your system to relieve fluid pressure
in the displacement pump, hose and gun (see the
WARNING at left). Drain valves at the gun stations
may be mounted in the base of a fluid regulator
(L), using an adapter.
gun/valve, and dampens pressure surges.
shown in Fig. 4 is a high pressure dispensing gun
for highly viscous fluids.
308149
11
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