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which may occur in the piping and foot valve as the
piping is assembled.
Single Pipe Ejector Installation
Single pipe installations require (see Figure 9):
a. Galvanized steel suction pipe.
b. Leather packer-type ejector with built-in foot
valve.
c. Turned couplings (supplied with packer-type
ejector).
d. Well casing adapter (supplied with packer-type
ejector).
1. Connect ejector to first length of pipe. Use pipe
joint compound sparingly on male threads.
2. Lower pipe into casing. Use special turned cou-
plings (included with single pipe ejector package)
to increase water flow. Use pipe joint compound
sparingly on male couplings threads.
Horizontal Offset Pipe Sizes
When the pump is set more than 25' to one side of the
well, increase the horizontal pipe size to reduce fric-
tion. Never use pipe smaller than the pump port size.
Pump
Up to 25'
Model
Suct. Drive Suct. Drive Suct. Drive
390.2532
1-1/4" 1-1/4" 1-1/2" 1-1/4"
NOTICE: Fill pipe with water as each length is added
to be sure foot valve and connections do not leak.
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.
INSTALLATION
25' to 100'
100' to 300'
2"
2"
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 increased to
reduce pressure losses caused by friction.
• Up to 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.
Air Volume Control
Sears Stock No. 2761
Pump to Tank Piping
1" Discharge
Relief Valve Sears
Stock No. 2729
Air Volume Control Tubing/Fitting
Sears Stock No. 27881
Figure 11 – Pump With Standard Tank
7
TANK
To Service
Pressure
Regulator
AVC Fitting
Well Seal
2355b 0697nc
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