308553 5
Installation
Grounding
FIRE AND EXPLOSION HAZARD
This pump must be grounded. Before
operating the pump, ground the system
as explained at right. Also read the sec-
tion FIRE AND EXPLOSION HAZARD on page
3.
The acetal pump contains stainless steel fibers,
which makes the wetted parts conductive.
Attaching the ground wire to the grounding strip
grounds the air motor and the wetted parts.
The polypropylene pump is not conductive.
When pumping conductive flammable fluids,
always ground the entire fluid system by making
sure the fluid system has an electrical path to a
true earth ground (see Fig. 4 through Fig. 7).
Never use a polypropylene pump with
non-conductive flammable fluids as specified by
your local fire protection code.
US Code (NFPA 77 Static Electricity) recommends
a conductivity greater than 50 x 10
–12
Siemans/me-
ter (mhos/meter) over your operating temperature
range to reduce the hazard of fire. Consult your
fluid supplier to determine the conductivity or
resistivity of your fluid. The resistivity must be less
than 2 x 10
12
ohm-centimeters.
WARNING
To reduce the risk of static sparking, ground the pump
and all other equipment used or located in the pumping
area. Check your local electrical code for detailed
grounding instructions for your area and type of equip-
ment.
Ground all of this equipment:
D Pump: Attach a ground wire (Y) to the grounding
strip (112) with the screw (28), lockwasher (29) and
nut (27), as shown in Fig. 1. Connect the clamp end
of the ground wire to a true earth ground. Order
Part No. 222011 Ground Wire and Clamp.
NOTE: When pumping conductive flammable fluids
with a polypropylene pump, always ground the fluid
system. See the WARNING at left. Fig. 4 through
Fig. 7 show recommended methods of grounding
flammable fluid containers during filling.
Fig. 1
Y
112
27
29
28
01432B
D Air and fluid hoses: Use only electrically conductive
hoses.
D Air compressor: Follow the manufacturer’s recom-
mendations.
D Solvent pails used when flushing: Follow your local
code. Use only metal pails, which are conductive.
Do not place the pail on a non-conductive surface,
such as paper or cardboard, which interrupts the
grounding continuity.
D Fluid supply container: Follow your local code.
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