Franklin Electric MH Serie Manuel Du Propriétaire page 4

1.) As the flow rate increases
2.) As the piping size decreases
Consult included performance tables (Appendix I) and
friction loss tables (Appendix II) to determine the amount
of head lost for a given application. Pipes from the well to
the pump should slope upward (about 1" of rise for every
30" of run).
DISCHARGE PIPE SIZES FOR INSTALLATION
When the pump is located at a distance from points of
water use, it is necessary to increase the discharge pipe
size in order to reduce friction loss. The friction loss in a
system increases:
1.) As the flow rate increases
2.) As the piping size decreases
Consult included performance tables (Appendix II) and
friction loss tables (Appendix III) to determine the amount
of head lost for a given application.
SHALLOW WELL INSTALLATION (FIGURE 1)
Connect pump to well as shown in Figure 1. Shallow well
operation, suitable for depths not exceeding 10 feet,
requires only a single pipe to the water source. Typical
water sources are wells, lakes, ponds, streams, or rivers.
Support the suction pipe, so its weight is not carried by
the pump. Installation should include a foot valve in the
well or a check valve close to the pump. If the distance
from the well to the pump is more than 40 feet, a check
valve (installed close to the pump) is recommended in
addition to the foot valve. The choice of using a check
valve at the pump or a submerged foot valve depends on
the individual installation parameters. A foot valve is
required for a cased/dug well. Special care should be
taken to ensure that all suction fittings are tight and
sealed. Otherwise, the pump cannot be primed or will
lose prime over a period of time.
DISCHARGE PLUMBING
When using this pump in a shallow well application it is
recommended to use an in-line pressure switch and a
properly sized pressure tank. This pump does not include
a pressure switch and these items must be purchased
separately. Adding a gate valve in the discharge line can
save the need to drain the system when servicing the
pump. Unions and other breakable pipe connections
close to the pump allow for easy accessibility when
servicing. This set-up is typical and suitable for shallow
well pumping applications, but not required for proper use.
FLOODED SUCTION BOOSTER INSTALLATION
The horizontal multi-stage pump can be used in either an
in-line or parallel boosting application. Common
installation for boosting municipal water pressure is using
the parallel installation (Figure 2). When using the pump
in a boosting application, it is important to not exceed the
maximum operating pressure of the pump of 145 psi.
Install a pressure relief valve on any boosting application
where the pump pressure can exceed the maximum
working pressure of the plumbing, tank, or of the system.
FIGURE 1 - SHALLOW WELL INSTALLATION
INSTALLATION RECORDS
To keep an accurate record of your installation, be sure
to fill out the data below:
Date of Installation: _____________________________
Model No: ____________________________________
Depth of water (ft.): _____________________________
Suction pipe size: ______________________________
Pressure switch setting
ON(PSI): _________ OFF(PSI): __________
Suction pipe length (ft.): _________________________
Discharge pipe length (ft.): _______________________
Voltage to motor: ______________________________
Discharge pip size: _____________________________
Incoming Pressure (PSI): ________________________
1-1/4" Suction Pipe
(1-1/2" for 45 gpm)
Sanitary
Well Seal
Well
1-1/4"
Foot Valve
(1-1/2" for 45 gpm)