Graco Viscount I 1000 Pump [7/16] Installation
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Graco Viscount I 1000 Pump [7/16] Installation

Graco Viscount I 1000 Pump [7/16] Installation
307622J 7
Installation
NOTE: The Typical Installation shown on page 6 is
only a guide. Contact your Graco distributor for assis-
tance in custom designing your hydraulic system.
NOTE: Mount the pump to suit the type of installation
planned. The pump dimensions and mounting hole
layout are shown on page 15.
CAUTION
The hydraulic supply system must be kept clean at
all times to avoid damage to the motor and hydraulic
power supply. Blow out all hydraulic lines with air and
flush thoroughly with hydraulic oil before connecting
the lines to the motor.
Always plug the hydraulic inlets, outlets, and lines
when disconnecting them for any reason to avoid
introducing dirt and other contaminants into the sys-
tem.
Be sure that the hydraulic power supply is equipped
with a suction filter to the hydraulic pump and a system
return line filter of 10 micron size. Carefully follow the
manufacturer’s recommendations on reservoir and
filter cleaning and periodic changes of hydraulic fluid.
The motor has a 3/4–16, 37_ (m) flared tube hydraulic
oil inlet fitting, and a 7/8–14, 37_ (m) flared tube hy-
draulic oil outlet fitting. Use a minimum 1/2 in. ID
hydraulic supply line and a minimum 5/8 in. ID return
line.
On the hydraulic oil supply line (L), install a shutoff
valve (E) to isolate the system for servicing; a fluid
pressure gauge (F) to monitor hydraulic oil pressure to
the motor and avoid overpressurizing the motor or
displacement pump; a pressure and temperature
compensated flow control valve (G) to prevent the
motor from running too fast; a pressure reducing valve
(H) with a drain line (K) running directly into the hy-
draulic return line (D); and an accumulator (J) to
reduce the hammering effect caused by the motor
reversing direction.
On the hydraulic return line (D), install a shutoff valve
(R) for isolating the motor for servicing.
WARNING
To reduce the risk of serious injury including skin
injection, your system must include a drain valve
installed near the pump fluid outlet to help relieve
fluid pressure in the displacement pump and hoses
when shutting off the pump.
Install a fluid drain valve (B) and a grounded dispense
hose to the pump’s 1/2 npt fluid outlet, and connect a
suction hose to the 3/4 npt pump fluid intake. See the
Typical Installation.
WARNING
To reduce the risk of component rupture, which can
cause serious injury, including skin injection, be
sure that all accessories and system components
can withstand the pressure and flow created by this
pump.
Ground the pump and system as instructed on
page 5.

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