Pressure Switch - Flotec FP2521 Manual Del Propietário

Performance / Installation
TABLE I – Pump Performance (In Gallons per Minute)
NOTE: This system is designed for pumping depths of 25 feet or less.
Pump
Model Description
FP2521 3/4HP SW Jet/Tank
Major Components and What
They Do
Impeller and Jet
Impeller turns with motor shaft, causing water to fly out from
its rim by centrifugal force. Impeller rotation creates a vacuum
which pulls in more water. Part of the water is diverted back to
the jet where it passes through the nozzle and venturi. This
creates more vacuum to draw in more water.
In shallow wells (less than 25 feet deep), the vacuum
created at the pump is enough to pull water to the pump.
Therefore, for shallow well use the jet is built into the
pump.
Pre-Charged Tank
The tank serves two functions. It provides a reservoir of
water under pressure and maintains a cushion of air
pressure to prevent pipe hammering and possible damage
to plumbing components. When water is drawn off
through the house fixtures, the pressure in the tank is
lowered and the pump starts.
NOTE: Pressurize tank to 28 PSI.

Pressure Switch

The pressure switch provides for automatic operation.
Pump starts when pressure drops to 30 pounds and stops
when pressure reaches 50 pounds.
Check Valve or Foot Valve
This pump is equipped with a built-in check valve. Install
a check valve as close to well as possible on well point
installations. A foot valve must be installed in the well on
dug or cased wells. See Figures 2A and 2B, Page 4. For
long horizontal pipe runs, install check valve as close to
well as possible (all types of wells).
Installation
Piping in the Well
The Shallow Well Water System can be installed on a dug
well, drilled well or with a driven point. In a dug or cased
well, a foot valve and strainer should be installed for easy
priming. It should be installed five to ten feet below the
lowest level to which the water will drop while the pump
is operating (pumping water level). To keep sediment from
clogging the strainer, be sure it is five to ten feet above the
bottom of the well. Before installing the foot valve, make
sure that it works freely.
For parts or assistance, call Flotec Customer Service at 800-365-6832
Discharge
Suct. Disch. Pressure PSI
1-1/4" 1"
When using a foot valve, a priming tee and plug as shown
in Figure 1, are recommended.
Figure 1
When installed on a driven point well, your Shallow Well
Water System should have a check valve installed as
shown in Figure 2A.
Figure 2A
Pumping Depth in Feet
5' 10'
40 10.2 8.7
Priming Plug,
Priming Tee
(User Supplied)
3
15' 20'
7.6 5.8
To Service
From
Well
2894 0697
Check valve
Steel drive pipe
Drive coupling
Well point
Driven point