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PRESSURE
TANK
CONNECTION
Air Volume Control
lANK
I
To Service
Sears Stock No. 2761
_1
_"_
"
(_
TANK
_._lb
_
Pressure
y
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Regulator
Pump to Tank Piping
I1._.
I_ (J_
_
J
1" Discharge --_
_"_-
,_j/j
Relief Valve Sears._-*_!_
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Stock No. 27229
_.
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-_
_
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AVC Fitting
Air Volume Control Tubing/Fdti_ "_ _
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)
Piping Tee and
Sears Stock No. 27881
Well
Seal "_"_1,
"
1" Discharge
t
•
'
To Service
2355b 0697rm
2358b
0697nc
Figure
I I - Pump With
Standard
Tank
3.
Add lengths
of pipe
until the ejector
reaches
the
proper
depth.
(Your well driller should supply
this
information.)
NOTICE:
As a guide, the ejector
should
be set at least
10 to 20 feet below
the lowest
water level with pump
running,
if possible,
but always at least 5 feet above the
bottom
of the well (see Figure 9, Page 7).
4. - To properly
seat the cup seals, after the ejector
is
correctly
positioned
move
the assembly
up and
down slightly. Water pressure
in the casing will then
soak the cup seals (see Figure 9). They should
seal
in 2-3 hours after installation.
5.
With ejector
set, install well casing adapter. Remove
pipe holder. Align locating
lugs and tighten adapter
to form seal with well casing.
"v,,,.Pressure
Regulator
Relief Valve
Figure
12 - Pump With
Captive-Ai#
Tank
Check Pressure with
Tire Gauge
Figure 13 - Checking Tank Pre-charge
Discharge
Pipe Sizes
1.
If increasing
discharge
pipe
size, install reducer
in
pump
discharge
port. Do not increase
pipe size by
stages.
2.
When
the pump
is set away from
the points
of
water
use, the discharge
pipe
size should
be in-
creased
to reduce
pressure
losses caused
by fric-
tion.
• Upto
100 ft run: 1"
• 100 ft. to 300 ft run: 1-1/4"
• 300 ft. to 600 ft run: 1-1/2".
Pressure
Tank Installation
- Deep
Well
The Pressure Tank provides
a reservoir
of water under
pressure
and maintains
cushion
of air pressure
to pre-
vent pipe hammering
and possible
damage
to plumb-
ing components.
When
water
is drawn
off through
house fixtures,
the pressure
in the tank is lowered
and
the pressure
switch
starts the pump.
Standard
Tank Connection
When
a standard
tank is used, an air volume
control
(AVC) adds air to the tank when it is needed.
See Figure
11 for typical standard
tank installation.
To connect
AVC to pump,
thread
a 1/8 _ compression
fitting into
tapped
hole on the front of the pump.
Cut tubing
to
length
to reach AVC; assemble
to fitting on pump
and
to AVC on tank. See installation
instructions
provided
with tank and AVC for details.
Precharged
Tank Connection
When
a precharged
tank is used, no AVC is necessary.
See Figure 12 for typical precharged
tank installation.
A precharged
tank contains
a factory
provided
air
charge.
NOTICE: Your pump
pressure
switch is set for a 40-60
PSI range and requires
a tank pre-charge
of 40 PSI for
proper
operation
(see Figure 13). See tank owner's
air
charge.
An annual
check
on tank
charge
is recom-
mended.
8
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