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size. The suction pipe should never allow a downward water
fl ow in its connections from water supply to the pump (see
Fig. 1). A foot valve must be connected to the bottom of the
suction line and should be clear of any possible obstructions.
These valves are available from your pump supplier. It must
be ensured that the foot valve remains well submerged at all
times. If large debris is present at the suction point, install
a fi ltration device to prevent the debris from entering the
pump. Thread compound should be used on all pipe joints.
All connections should be thoroughly tightened. A leak in the
suction line may prevent a complete prime and will reduce
pump operating performance. Figure 2 shows a typical pump
installation.
c)
DISCHARGE LINE: A priming plug should be installed
as shown in Figure 2. Long hose or pipe lengths add re-
sistance to water fl ow which therefore reduces pumping
capacity. Use standard approved pipe or hose suitable for
the pumping pressures which develop and use lengths
only as necessary to reach the discharge point. Avoid
using nozzles or reducing fi ttings on the discharge line if
Fig. 1
Fig. 2
This way is allowing for a downward fl ow
of water.
WRONG WAY
TYPICAL INSTALLATION
Priming Plug
Concrete
they are not required in your application. The discharge
pipe or hose should be at least as large as the discharge
thread opening on the pump casing. If long line lengths
are required, increase pipe/hose size accordingly. Avoid
unnecessary bends in lines. Proper installation will enable
effi cient service from your pump.
d)
WIRING: All wiring, electrical connections, and system
grounding must comply with the National Electrical Code
(NEC) and with any local codes and ordinances. Employ
a licensed electrician. It is recommended that a separate
circuit be led from the distribution panel to the pump unit. A
proper fused disconnect switch is to be installed in the line,
making sure that the correct gauge of cable is used to carry
the load. Very long leads will require a larger cable. For all
3-Phase motors a separate manual thermal overload switch
or a magnetic starter having the proper size heater elements
must be installed. An electrician should be employed to do
the wiring. After wiring is complete check the impeller rotation
by switching the motor on for one second only.
RIGHT WAY
Discharge Pipe
Suction Pipe
Elbow
Drain
Plug
2
Suction Pipe
Well Casing
Foot Valve
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