Check Valves - Franklin Electric VS 4 Serie Manuel Du Propriétaire

To insure correct rotation of three phase units, brace
pump shell securely and apply power momentarily
by snapping line switch quickly on and off. 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
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. Don't set the pump below the
casing perforations or well screen unless you make
arrangements to ensure an adequate fl ow 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
fi ve feet from the bottom of a drilled well.
SPLICING THE POWER CABLE
Follow the instructions enclosed in the cable splicing
kit you purchase.
Pressure Tank
See Wiring Diagrams
Pressure Switch
Spring-Loaded
Check 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.
DROP PIPE
Galvanized pipe is recommended for suspending
submersible pumps into the well. Plastic pipe may
be used only when observing the plastic pipe
manufacturer's recommendations of depth and pressure.
Give special consideration to:
1. A safety cable to prevent loss of pump if pipe should
break.
2. Torque arrestor just above pump to prevent chafi ng
the cable when pump and pipe twist during the starting
and stopping cycle. (See Figure 1)
Schedule 40 galvanized pipe is suitable for settings to
600 feet(180m). For deeper settings, use schedule 40
pipe for the bottom 600 feet(180m), and schedule 80 for
the remainder.
Take great care to keep pipes clean and free from
Gate Valve
pebbles, scale and thread chips. Make sound, air-tight
connections at all fi ttings. Pipe sealant is recommended.

CHECK VALVES

Many pumps have a built-in or externally supplied check
valve. For a pump without one, install a check valve
immediately above the pump. Install an additional check
valve above the ground. If the pump is more than 100
feet (30m) below the wellhead, install another check
valve in the drop pipe 100 feet (30m) above it. For pump
settings deeper than 200 feet (60m), install additional
check valves at intervals of 100 feet (30m).
REMOVABLE POPPET CHECK VALVE
4" submersible pumps with a 1-1/4" discharge are
supplied with a spring-loaded REMOVABLE poppet style
check valve assembly. The check valve can be removed
from the pump discharge when the pump is installed in
applications where drain back is desired.
W A R N I N G
can cause the pump to rotate backwards. If pump/
motor starts during this time; damage to the pump
can occur.
The check valve can be removed with the use of the
T-Handle Poppet Wrench(part no. 23498207). Ordered
separately. Or, with standard needle nose pliers. The
poppet assembly is left hand threaded and is removed
by turning CLOCKWISE.
If reinstalling a Popppet Check Valve assembly, the
assembly should be tightened to 15 inch-pounds.
Poppet Assembly
Fluid draining back through the pump
T-Handle Poppet Wrench
1