8 309204
Installation
Grounding
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
equipment.
NOTE: When pumping conductive flammable fluids,
always ground the fluid system. See the WARNING
above. Fig. 3 shows a recommended method of grounding
flammable fluid containers during filling.
Ground all of this equipment:
•Pump: The acetal pump has a grounding screw on
the top manifold. Connect the non-clamp end of the
ground wire to the grounding strip or grounding
screw, and connect the clamp end of the ground
wire to a true earth ground. To order a ground wire
and clamp, order Part No. 222011.
•Air and fluid hoses: Use only electrically conductive
hoses.
•Air compressor: Follow the manufacturer’s
recommendations.
•Solvent pails used when flushing: Follow the local
code. Use only grounded 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.
•Fluid supply container: Follow the local code.
WARNING
The acetal Husky 515 pump contains stainless steel
fibers, which makes the wetted parts conductive.
Attaching the ground wire to the grounding screw
(106) grounds the wetted parts. See grounding
screw on page 18.
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. 3). Never use a polypropylene or PVDF
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/meter
(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 1012 ohm-
centimeters.
9079A
Fig.3
GROUNDING A PUMP
KEY
A Pump
H Fluid drain valve (required)
S Dispense valve
T Fluid drain line
Y Fluid section grounding via grounding strip or grounding
screw (required for metal and acetal pumps)
Z Container ground wire (required)
Hose must be conductive.
Dispense valve nozzle must be in contact with container.
FIRE AND EXPLOSION HAZARD
This pump must be grounded. Before
operating the pump, ground the system
as explained below. Also read the section
FIRE AND EXPLOSION HAZARD on
page 3.
GracoHusky.ir
GracoHusky.ir
