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Operation / Installation
Chart II – Water Yield Per Pump Cycle
(drawdown) in Gallons
Tank
Model
Capacity
Number
(U.S. Gals)
PSC-14-4
14
PSC-20-6
20
PSC-30-9
30
PSC-35-10
35
PSC-40-12
40
PSC-48-14
48
PSC-60-20
60
PSC-80-23
80
PSC-85-25
85
PSC-119-35
119
NOTICE: Drawdown will be affected by operating temperature
of the system, accuracy of the pressure switch and gauge,
the actual precharge pressure, and the rate of fill.
INSTALLATION
Connect system pipe to elbow on tank flange. Use plas-
tic or steel pipe as required. To prevent leaks, use
PTFE tape on male threads of all 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 PTFE tape and
remake connection. Do not overtighten pipe connection
at tank. Thread connection on hand tight plus 3 addi-
tional turns for steel pipe and 1-2 turns for schedule 40
PVC pipe.
SPECIFICATIONS
Model
PSC-14-4
PSC-20-6
PSC-30-9
PSC-35-10
PSC-40-12
PSC-48-14
PSC-60-20
PSC-80-23
PSC-85-25
PSC-119-35
NOTICE: Maximum Internal Water Temperature – 120° F.
Maximum Ambient Air Temperature – 120° F.
Distance from base to center line of connection is 2".
Allow 12" clearance over top of tanks for service access.
Pressure Switch Setting
20-40
30-50
40-60
5.3
4.5
7.2
6.1
10.8
9.1
12.8
10.8
14.7
12.5
17.2
14.6
21.9
18.5
29.1
24.6
31.7
26.8
43.8
37.0
Tank
Capacity
Tank
(U.S. Gals)
Diameter
14
16"
20
16
30
16
35
21
40
16
48
21
60
24
80
21
85
24
119
24
NOTICE: When replacing a standard tank in a sub-
mersible pump system, raise pump and discharge pipe
far enough to remove bleeder orifices from the tees in
the discharge pipe. Plug the tees. When replacing a
standard tank in a jet pump system, remove Air Volume
Control (AVC) and plug AVC port in pump.
3.9
In areas where the temperature is high for long periods
5.3
of time, the tank pre-charge pressure may increase.
7.9
This may reduce the tank drawdown (amount of water
9.4
available per cycle). If this occurs, reduce the pre-
10.8
charge pressure to two PSI below the pump cut-in set-
12.6
ting of the pressure switch.
16.1
It is necessary to flush all air out of the piping system
21.3
and water reservoir portion of the pre-charged tank.
23.2
This is required on new installations, pumps requiring
32.0
repriming and pumps that have been disassembled for
service. Proceed 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 leak-
ing into the system; check for leaks in the piping on
the suction side of the pump.
NOTICE: To prevent waterlogging, check tank air
charge every six months.
1
Lake Chemical Co., Chicago, Illinois
Tank
Height
31-5/16"
36-5/16
48-5/16
37
61-5/16
44
46-9/16
66
58-9/16
78-9/16
Discharge
Tapping
1"
1
1
1
1
1
1-1/4
1
1-1/4
1-1/4
4
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