Ground The System
The equipment must be grounded to reduce the
risk ofstatic sparking. Static sparking can cause
fumes to ignite or explode. Improper grounding
can cause electric shock.Grounding provides an
escape wire for the electrical current.
• Always ground the entire fluid system as
described below.
• Follow your local fire codes.
Before operating the pump, ground the system as
explained below.
• Pump: All pumps have a ground screw. Loosen
the grounding screw. Insert one end ofa 4 mm
2
(12 AWG) minimum ground wire behind the ground
screw and tighten the screw securely. Connect the
clamp end ofthe grounding wire to a true earth
ground. A ground wire and clamp, Part 819.0157,
is available from Verder.
• Motor: Motors 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 of150 m (500 ft) combined
hose length to ensure grounding continuity. Check
electrical resistance ofhoses. Iftotal 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 a power source.
Refer to the VFD manual for grounding instructions.
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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