Tuthill SP100-05 Serie Manual De Instalación Y Operación página 4

Installation (cont'd)
Pump Grounding
FIRE AND EXPLOSION HAZARD! Tuthill SP100-05X-CD-XXX-X (Groundable Acetal) 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.
Figure 1
Ground Point
Ventilating Exhaust Air
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 male NPT 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 bend that may restrict air
flow.
Fluid Pressure Relief Valve
Figure 3
The SP100 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 (acetal) 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.
B
A
C
4
Figure 2
Some systems may require installation of a pressure relief valve at
the pump outlet to prevent overpressurization, and possible rupture
of the pump or hose (Figure 3).
Thermal expansion of fluid in the outlet line can lead to
overpressurization, 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 between inlet and outlet ports.
B) Connect fluid outlet here.
C) Connect fluid inlet here.
D) NEVER install a foot valve on suction tube!