 The
Durham Geo SEP IV (Submersible Electric
Pump) is designed for continuous operation
for the withdrawal of contaminated groundwater, or
to create and maintain a zone of depression
for environmental remediation operations. The pumps
can also be used for leachate collection. The SEP IV
pumps are available in nine models producing flow
rates up to 35 GPM. They feature the Duralife
impeller system for longer life in turbid
conditions. The pumps can be used to depths of 380
feet. The SEP IV construction materials are
resistant to chemical solutions as well as most
typical groundwater contaminants.
Pump Selection
The SEP IV pumps consist of three components: the
pump end, the pump motor and the motor lead.
Selecting the best system for your site requires the
following information: the total head, the desired
flow rate and the well depth. Use the pump curves
for selecting the desired flow rate. Follow the pump
curve to select the pump end that matches your flow
rate, the curve will indicate the Hp motor required.
Three phase motors are used with the auto speed
control system. Select two or three wire motor leads
for your well depth.
Pump End
External components including the discharge head,
pump shell, motor bracket and inlet screen are made
from Type 304 Stainless Steel. The Duralife pump
bowls, impellers and guide vanes are made from Noryl
GTX 830 resin and are resistant to most chemical
solutions, typical ground water and leachate
contaminants. This Duralife impeller provides
excellent chemical resistance and longer service in
turbid water conditions, when compared to impellers
made of stainless steel. Use of this resin based
material also reduces the weight of the pump end.
The pumps do not include a check valve. It is
recommended that a check valve be installed in the
fluid discharge line.
Motor
All motors are manufactured by Franklin Electric as
Special Pollution Recovery Motors with Type 304
Stainless Steel and TeflonŽ external, water
contacting components for long pump life and
chemical resistance.
Motor Lead
Motor leads are supplied separate to the pump end
and motor assemblies. Each lead is supplied as a
continuous length with no splices. Each wire is
insulated with THHN.
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Air
Strippers
The
SEP IV auto speed control system has two main
components: a controller at the surface and a
down hole mini-transducer that is mounted on the
pump.
