Graco Endura-Flo 4D150, Instructions - Parts Manual

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Installation
Fluid Suction Line
• See Technical Specifications, page 40 , to
determine the fluid inlet size of your pump.
• For maximum suction lift (wet and dry) information,
see Technical Specifications, page 40 .
1. Use flexible, conductive hoses.
2. Use a compatible liquid thread sealant on
connections to prevent air from entering the fluid
line.
3. Attach the suction line into the pump inlet (N)
snugly.
Fluid Outlet Line
1. Use electrically conductive fluid hoses (P). Attach
the fluid fitting onto the pump outlet (M) snugly
while supporting the outlet with a wrench. See
Technical Specifications, page 40 , to determine
the fluid outlet size of your pump.
2. Install a fluid regulator (H) at the pump fluid
outlet to control fluid pressure, if desired. See
Air Line, page 7 , Step 1a, for an alternative
method to control pressure.
3. Install a fluid drain valve (J) near the fluid outlet.
To use the valve as a circulation valve, connect a
tube (K) between the valve and pail.
A fluid drain (J) valve is required in your system
to relieve pressure in the hose if it is plugged.
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.
Some systems may require installation of a
pressure relief valve (not supplied) at the pump
outlet to prevent overpressurization and rupture of
the pump or hose.
Thermal expansion of fluid in the outlet line can
cause overpressurization. Thermal expansion
can occur when using long fluid lines exposed
to sunlight or ambient heat, or when pumping
from a cool to a warm area (for example, from an
underground tank).
Overpressurization also can occur if the pump is
used to feed fluid to a piston pump, and the intake
valve of the piston pump does not close, causing
fluid to back up in the outlet line.
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