Grounding
The equipment must be grounded to reduce the
risk of static sparking and electric shock. Electric
or static sparking can cause fumes to ignite or
explode. Improper grounding can cause electric
shock. Grounding provides an escape wire for the
electric current.
• Always ground the entire fluid system as
described below.
• Pumps with Polypropylene and PVDF fluid
sections are not conductive. Never use a
nonconductive polypropylene or PVDF pump
with flammable fluids.
• Follow your local fire codes.
Before operating the pump, ground the system as
explained below.
• Pump: Pumps with fluid sections made of
aluminum, conductive polypropylene, hastelloy,
and stainless steel have a ground screw. Loosen
the grounding screw (R). Insert one end of a
12–gauge minimum ground wire behind the ground
screw and tighten the screw securely. Connect the
clamp end of the grounding wire to a true earth
ground. A ground wire and clamp, Part 238909,
is available from Graco.
• Motor: ACand BLDCmotors have a ground screw
in the electrical box. Use it to ground the motor to
the controller.
• Air Line and Fluid hoses: Use only grounded
hoses with a maximum of 500 ft (150 m) combined
hose length to ensure grounding continuity. Check
electrical resistance of hoses. If total resistance
to ground exceeds 29 megohms, replace hose
immediately.
• Fluid supply container: Follow local code.
• Solvent pails used when flushing: Follow local
code. Use only conductive metal pails, placed
on a grounded surface. Do not place the pail
on a nonconductive surface, such as paper or
cardboard, which interrupts grounding continuity.
• VFD: Ground the variable frequency drive (VFD)
through a proper connection to the electrical
system. Refer to the VFD manual for grounding
instructions.
• Graco Motor Control: Ground through a
proper connection to a power source. See
.
Check your system electrical continuity after the
initial installation, and then set up a regular schedule
for checking continuity to be sure proper grounding
is maintained. The resistance should not exceed 1
ohm.
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334188P
Tel: 866-777-6060
Fax: 866-777-6383
Springer Pumps, LLC
Website: www.springerpumps.com
Int'l: +001 267 404 2910
