Sotera SP100-10X-XX-XXX-X - Manual (Page 4)

4
Installation (cont’d)
FIRE AND EXPLOSION HAZARD! Sotera SP100-10X-CA-XXX-X (Groundable Air Motor) Air Operated Diaphragm pumps must
be grounded for safe and proper operation. Before operating the pump, be certain it is properly grounded as illustrated below. Read and understand
the warnings on page 2 regarding grounding and spark fire hazards. An improperly grounded pump can be a fire hazard.
The SP100 Air Operated Diaphragm pump can be grounded through the mounting feet, located on the inlet manifold (Figure 1). To reduce the risk of
static spark, ground the pump and all other equipment located in the pumping area. Ground wires should be of proper size and installed per local and
national electrical codes.
Never use a polypropylene or PVDF with non-conductive flammable fluids as specified
by your local fire protection codes. Contact your fluid supplier to determine the
conductivity or resistance of your fluid.
If there is any static spark or you feel an electrical spark while using this equipment,
stop the pump immediately! DO NOT use the equipment until the problem has
been located and corrected.
If using a conductive pump, use conductive hoses. If using a non-conductive pump,
ground the fluid system.
Installation should be planned taking proper ventilation into consideration. It is
imperative that adequate fresh air ventilation be provided to prevent the build up of
flammable, explosive, or toxic fumes from the fluid being pumped.
Keep the area around pump clean and free of debris, including rags, solvent and
gasoline. Do not allow pilot lights or open flames near the work area; keep a fire
extinguisher close for quick access.
Ground Point
Figure 1
Pump Grounding
Ventilating Exhaust Air
Figure 2
Diaphragm failure will cause the fluid being
pumped to exhaust with the air. If pumping
caustic, explosive, or flammable materials, they
can be discharged with exhaust air.
Exhaust air from the pump must be properly routed
to ensure safe operation. The exhaust must be
discharged in a safe place, away from where it
could harm people, animals, or contaminate food
preparation areas. It should also be away from
any possible sources of ignition.
It is also important to place the end of the exhaust
in an appropriate container to contain any liquid
that may discharge (Figure 2).
Install an electrically conductive air exhaust hose, connecting the muffler at the end. Minimum diameter for the hose is 3/8” ID. If the hose run will
exceed 15’, a larger diameter hose is required. Take care when routing the hose to avoid kinks and sharp bends that may restrict air flow.
Fluid Pressure Relief Valve
Some systems may require installation of a pressure relief valve
at the pump outlet to prevent over pressurization, and possible
rupture of the pump or hose (Figure 3).
Thermal expansion of fluid in the outlet line can lead to over
pressurization, even if the pump is not operating. Thermal
expansion can happen when fluid lines, fluid storage containers,
and pumps are exposed to sunlight or ambient heat. It can also
occur when pumping fluid from a cool area (underground storage
containers for example) to a warm area.
A) Install check valve and/or pressure relief valve between inlet
and outlet ports.
B) Connect fluid outlet here.
C) Connect fluid inlet here.
D) NEVER install a foot valve on suction
tube!
A
B
C
Figure 3