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Installation (All Pumps)
Application
The High-Flo pump is designed for low pressure,
medium volume circulation of finishing materials such
as paints and stains.
Do not use this pump for flushing or purging lines with
caustics, acids, abrasive line strippers, and other
similar fluids.
Typical Installation
The Typical Installations shown in Figs. 4 and 5, and
the following installation information are only guides.
Proper sizing of the pump, accessories and lines is
essential to get the maximum performance from your
system. Contact your Graco distributor for assistance
in designing a system to meet your needs.
Grounding
WARNING
FIRE AND EXPLOSION HAZARD
Before operating the pump, ground the
system as explained below. Also read
the section FIRE AND EXPLOSION
HAZARD on page 4.
1. Pump: use the ground wire and clamp. See Fig. 1.
Loosen the grounding lug locknut (W) and washer
(X). Insert one end of a 12 ga (1.5 mm@) minimum
ground wire (Y) into the slot in lug (Z) and tighten
the locknut securely. Connect the other end of the
wire to a true earth ground. Order Part No.
237569 Ground Wire and Clamp.
W
Y
X
Z
Fig. 1
0720
2. Air and fluid hoses: use only electrically conductive
hoses.
3. Air compressor or hydraulic power supply: follow
manufacturer’s recommendations.
4. Surge tank: use a ground wire and clamp.
See Fig. 1.
5. Spray gun: ground through connection to a prop-
erly grounded fluid hose and pump.
6. Fluid supply container: follow your local code.
7. Object being sprayed: follow your local code.
8. Solvent pails used when flushing: follow your local
code. Use only metal pails, which are conductive,
placed on a grounded surface. Do not place the
pail on a nonconductive surface, such as paper or
cardboard, which interrupts the grounding continu-
ity.
9. To maintain grounding continuity when flushing or
relieving pressure, hold a metal part of the spray
gun firmly to the side of a grounded metal pail,
then trigger the gun.
