General Information
From
Well
Pressure Switch
Figure 1A
OPERATING CYCLE
1. Tank nearly empty – air expands filling area
above vinyl water cell (Fig. 2A).
2. Water begins to enter tank – air is compressed
above water cell as it fills with water (Fig. 2B).
3. Pump-up cycle completed – air now
compressed to cut off setting of pressure switch
(Fig. 2C).
4. Water being drawn from tank – compressed
tank air forces water out of water cell (Fig. 2D).
5. Water cell completely empty – new cycle ready
to begin (Fig. 2A).
A
C
WATER
Figure 2
Connect system pipe to tank flange. Use plastic or
steel pipe as required. To prevent leaks, use Teflon
tape or Plasto-Joint Stik
threaded connections to tank.
NOTICE: To be sure that joint is not cross-threaded
and that threads are clean, always make
connections by hand (without sealer) first. After
making sure that threads are clean, remove pipe,
add Teflon tape or Plasto-Joint Stik, and remake
connection. Tighten by hand first; finish with pipe
wrench for tight seal.
Tanks
To
Service
B
WATER
D
WATER
1
on male threads of all
Tanks
From
Well
Pressure Switch
Figure 1B
CHART II – Water Yield Per Pump Cycle
(drawdown) in Gallons
Pressure Switch Setting (PSI)
Model No.
20-40
BR11066
BR11067
11.6
BR11068
18.3
BR11069
30.0
BR11070
41.3
NOTICE: When replacing a standard tank in a
submersible pump system, raise pump and
discharge pipe far enough to remove bleeder
orifices in discharge pipe and plug tees. When
replacing a standard tank in a jet pump system,
remove Air Volume Control (AVC) and plug AVC
port in pump.
In areas where the temperature is high for long
periods of time, the tank pre-charge pressure may
increase. This may reduce the tank drawdown
(amount of water available per cycle). If this occurs,
reduce the pre-charge pressure to two PSI below
the pump cut-in setting of the pressure switch.
It is necessary to flush all air out of the piping
system and water reservoir portion of the pre-
charged tank. This is required on new installations,
pumps requiring repriming and pumps that have
been disassembled for service. Do this as follows:
1. Open faucets furthest from tank and allow
pump to operate.
2. Air in the system will cause a sputtering flow;
allow faucets to run until you have a steady, air
free stream.
3. Open and close faucets repeatedly until you are
sure all air has been removed.
4. If stream does not become steady, air may be
leaking into the system; check for leaks in the
piping on the suction side of the pump.
1
Lake Chemical Co., Chicago, Illinois
30-50
6.9
5.8
9.8
15.5
26.0
35.4
3
To
Service
40-60
5.0
8.5
13.4
22.0
31.0