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Grounding
WARNING
Ground the pump in accordance with all applicable
safety codes in your area. Proper grounding re-
duces the risk of shock, fire, or explosion caused
by static sparking, which can result in serious injury
and property damage.
1. Have a licensed electrician complete the electrical
hookup and wiring.
2. Consult the electric motor manufacturer for proper
heater-breaker requirements.
3. Before coupling the pump coupler to the motor
shaft coupler, check to be sure the shaft rotates in
the proper direction. Refer to Fig. 2, page 6.
System Design
The Typical Installation shown on page 4, and the
following text, is only a guide to show the relationship
of the pump to other system components. Due to the
pressure characteristics of the pump, which vary
widely with viscosity and specific gravity, professional
systems design is essential. Contact Graco (see back
page) for further information.
Pump dimensions and the mounting hole layout are
shown on page 24. The Technical Data is given on
page 29.
Fluid Lines
Line sizes depend on the flow requirements and calcu-
lated pressure drop due to the length of the run.
The pipe, tubing and fittings must be compatible with
the fluid and solvent you plan to use.
Installation
Keep in mind that sharp corners and fittings between
lengths of pipe or tubing may cause flow restrictions
and fluid breakdown. Use the longest lengths of pipe or
tubing available to minimize couplings. Use the most
direct route to the spray stations, and whenever practi-
cal, use long sweeping bends. A "holsclaw" bender is
recommended for making bends in tubing; a common
electrician's or plumber's bender is not satisfactory.
Remove burrs, dirt and contaminants from the ends of
the tubes before installing the fittings.
Return Line
Install a back pressure valve (F) to maintain proper line
pressure to all outlets. Install a flow meter (G) to
visually check the fluid flow rate.
Extend the return line (E) going into the mix tank (B) to
the bottom of the tank and end it with an elbow (A).
The elbow directs fluid around the walls of the tank to
help minimize air entrainment in the fluid.
Supply Line
Install a line check valve (J) near the 2 in. npt(f) pump
outlet.
The line check valve (J) is required to prevent fluid
backflow into the pump in case of a power failure or
incorrect operating procedure.
Install a pressure gauge (G) at the plugged 1/2 npt(f)
port at the left of the pump outlet. Make sure the
gauge is correctly rated for the operating pressure.
Fluid Filters
Install two fluid filters (P) with line isolation valves (Q)
on each side. This allows the system to be used while
cleaning a filter.
CAUTION
308060
5
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