Franklin Electric 93791010 Manuel Du Propriétaire page 3

If rotation is correct, reaction of the shell will be
clockwise when viewed from pump discharge
(that is, pump shaft will rotate counter clockwise).
Interchange any two leads at magnetic starter to
reverse rotation.
5. Run pump and motor unit for a few seconds to
ensure that it is in working order.
FIGURE 1 - Installation Diagram
Sanitary Well Seal
or Pitless Adapter
Discharge Pipe
Submersible Cable
Spring-Loaded
Check Valve
(Recommended every 100'/30m)
Safety Cable
Drop Pipe
Submersible Cable
(secured to drop
pipe with tape or
clamps every 10'/3m)
Torque Arrestor
Well Casing
Spring-Loaded
Check Valve
at Pump Discharge
Submersible
Pump Unit
Suction Screen
Motor
Well Screen or
Casing Perforations
SUITABILITY OF WELL
Install the pump only in a well that has been properly
developed. Water from an undeveloped well often contains
an excessive amount of sand, dirt, and abrasives which
can damage the pump. Check that the well is large enough
to allow the pump to be set at the required depth. Do not
set the pump below the casing perforations or well screen
unless you make arrangements to ensure an adequate
flow of water over the motor for cooling purposes.
Determine the correct pump setting from the driller's
record by taking into account the static water level and the
drawdown at the proposed pumping rate. Keep the pump
at least five feet from the bottom of a drilled well.
SPLICING THE POWER CABLE
Follow the instructions enclosed in the cable splicing
kit you purchase.
DROP PIPE
Drop pipe is recommended for suspending
submersible pumps into the well. Please refer to pipe
manufacturer for recommendations on depth and
pressure. Give special consideration to:
1. A safety cable to prevent loss of pump if pipe
should break.
Pressure Tank
See Wiring Diagrams
Pressure Switch
Spring-Loaded
Check Valve Gate Valve
Service Pipe
Pressure Relief Valve
Pressure Gauge
Note: Keep pump at least 5' from
bottom of well and above well screen
or casing perforations.
NOTICE: IT IS RECOMMENDED THAT STEEL CABLE
BE USED FOR THE PURPOSES OF SECURING THE
PUMP. 3/16" DIAMETER TO 1/4" DIAMETER BRAIDED
STEEL CABLE IS SUFFICIENT TO SUPPORT MOST
PUMP/MOTOR ASSEMBLIES. IT IS ALWAYS BEST
TO CONFIRM THAT THE PUMP/MOTOR ASSEMBLY
DOES NOT EXCEED THE MAXIMUM WEIGHT LIMIT
OF THE CABLE SELECTED.
2. Torque arrestor just above pump to prevent chafing
the cable when pump and pipe twist during the
starting and stopping cycle. (See Figure 1)
Take great care to keep pipes clean and free from
pebbles, scale and thread chips. Make sound, air-tight
connections at all fittings. Pipe sealant is recommended.
CHECK VALVES
It is recommended that one or more check valves
always be used in submersible pump installations. If
the pump does not have a built-in check valve, an inline
check valve should be installed in the discharge line
within 25 feet of the pump and below the draw down
level of the water supply. For deeper settings, check
valves should be installed per the manufacturer's
recommendations. More than one check valve is often
needed, but more than the recommended number of
check valves should not be used.
Swing type check valves are not acceptable and should
never be used with submersible motors/pumps. Swing
type check valves have a slower reaction time which
can cause water hammer (see next page). Internal
pump check valves or spring loaded check valves close
quickly and help eliminate water hammer.
NOTE: Only positive sealing check valves should be
used in submersible installations. Although drilling the
check valve or using drain-back check valves may
prevent back spinning, they create upthrust and water
hammer problems.
Check valves are used to hold pressure in the system
when the pump stops. They also prevent backspin,
water hammer and upthrust. Any of these can lead to
early pump or motor failure.
A. Backspin - With no check valve or a failed check
valve, the water in the drop pipe and the water in the
system can flow down the discharge pipe when the motor
stops. This can cause the pump to rotate in a reverse
direction. If the motor is started while it is backspinning,
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