ELECTRICAL
PIPING
INSTALLATION
Horizontal Piping From Well To Pump
When the pump is offset more than 25 feet from the well,
horizontal piping should be increased in size to reduce fric-
tion losses. In no case should the offset piping be smaller
than the suction tapping of the pump.
Horizontal Offset Piping Sizes for Shallow Well Jets
1-1/4”
1-1/2”
2”
Up to 25 Ft.
25 to 50 Ft.
50 to 200 Ft.
Discharge Pipe Sizes
When the pump is set at a distance from the house or point
of water use, the discharge pipe size should be increased to
reduce pressure losses caused by friction.
1”
1-1/4”
1-1/2”
Up to 25 Ft.
25 to 100 Ft.
100 to 600 Ft.
If horizontal suction pipe is more than 25’ long, install a
priming plug at well head to allow filling of pipe.
SEARS jet pumps should be used with Captive Air® Tanks
(see Figure 2, Page 3). For mounting pump to tank, pur-
chase tank fittings Kit No. 2788.
SEARS Captive Air® Tanks are pre-charged with air at the
factory. Check the tank Owner’s Manual to find if air charge
needs adjustment. Model 390.250284 requires 30 pounds
for proper operation.
The Jet pump can also be mounted on standard horizontal
tanks. A mounting kit with an AVC is furnished with tank
(Figure 1, Page 3). Instruction are also included.
The installation, operation and care of your Hydroglass®
pump is very similar to cast iron pumps. We ask, however,
that you keep the following points in mind.
IMPORTANT: Use teflon tape supplied with the pump
for making all threaded connections to the pump it-
self. Do not use pipe joint compounds on the pump!
1. Wrap one and one-half to two layers of Teflon tape on all
male threads being attached to pump. This will insure
leakproof connections. Do not overtighten threaded fit-
tings in the plastic pump. If leaks do occur, remove the
fitting,
clean off
the old Teflon tape, rewrap with one
and one-half to two layers of new tape and remake the
connection.
2. Be sure to support all piping connected to your Shallow
Well Jet Pump.
3. To connect AVC to the pump, remove the 1/8” pipe plug
(Key No. 13, Page 11) from the jet portion of the pump
body near the suction tapping. Insert a 1/8” fitting into
this tapping. Cut tubing to length and assemble the two
fittings on the air volume control and pump body.
4
Distance in Feet From Motor to Meter
Branch*
0’
51’
101’
201’
201’
401’
Motor
Max.
Fuse
to
to
to
to
to
to
Horse-
Load
Rating
50’
100’
200’
300’
400’
500’
power
Volts
Amperes
Amps
Wire Size
1/2
115/230
10.4/5.2
15/15
14/14
14/14
10/14
8/14
6/14
6/12
TABLE II: WIRING CHART – Recommended Fusing and Wiring Data
* Time delayed fuses are recommended instead of regular fuses in any motor circuit.
Figure 3
Priming
Tee and
Plug
Well
Casing
Foot
Valve
Sanitary
Well Seal
Suction Pipe
From Well
Foot
Valve
Screen
10'
Min.
5–10'
Cased
Well
Open
Water
Strainer
1836 0695
