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APPLICATION
The shallow well jet pump is ideal for the supply of fresh water to
rural homes, farms, and cabins. This pump is suitable for installations
where the vertical distance from the pump to the water level does
not exceed *25 ft (7.6m), including drawdown. In off-set installations,
friction losses in the suction pipe must be taken into consideration.
(Refer to Table 2, Friction Loss.)
*Less at high altitudes.
PERFORMANCE
U.S. Gallons per minute, at 30 PSI at Total Suction Lift
in feet below.
PUMP HP
1/2
3/4
1
Litres per minute, at 30 PSI at
Total Suction Lift in metres below.
PUMP HP
1/2
3/4
1
INSTALLATION
a) Pump Location: The pump should be installed in a clean, dry,
and ventilated location which provides adequate room for ser-
vicing and protection from freezing temperatures. It should be
bolted to a good foundation, preferably concrete, and provided
with adequate drainage. Locating the pump as close as possible
to the water source reduces the friction in the suction pipe and
will give maximum capacities.
b) Suction Pipe: It is recommended that only new, clean 1-1/4 inch
pipe or hose be used. If the pump is installed any appreciable dis-
tance away from the source of water, the suction pipe should be
increased to 1-1/2 inches. Horizontal lengths of pipe must gradu-
ally slope upwards from the source of water to the pump to avoid
air pockets in the line. Thread compound should be used on all
pipe joints and connections should be thoroughly tightened. A foot
valve must be installed and its operation should be checked since
a leak will prevent proper operation of the system. Make sure the
foot valve is located so that it will be submerged at all times. If a
sandpoint or driven well is used, install a check valve next to the
pump suction instead of the foot valve (Fig. 2b). All installations
must have a foot valve or a check valve in the suction pipe.
c) Pump to Tank Fittings: The discharge pipe from the pump to the
tank should be as short and direct as possible and should be the
same size as that of the pump discharge tapping. A check valve
should never be installed between the pump and the tank.
d) Service Line: The service line should be connected as shown
in Fig. 2a, b, c or d. The size of the service line required is gov-
erned entirely by the amount of water needed and the length of
the pipe. The pipe selected should be large enough so that the
friction loss (determined from Table 2, Friction Loss Chart) will
never exceed 20 ft (6m) head.
WARNING - ELECTRICAL PRECAUTIONS
All wiring, electrical connections, and system grounding must
comply with the National Electrical Code (NEC) and with any
local codes and ordinances. Employ a licensed electrician.
5' 15' 25'
12.6 10 6.9
16.7 13.1 8.4
23.2 19.5 13.3
1.5m 4.5m 7.5m
47.7 37.9 26.1
63.2 49.6 31.8
87.8 73.8 50.3
WARNING - RISK OF ELECTRICAL SHOCK
e) Wiring: An electrician should be employed to do the wiring and
connect the electrical service to the pump. The pressure switch
is wired to the motor at the factory and the voltage for which
the motor is wired is indicated by a sticker where applicable.
Make sure the motor is wired for the same voltage as the power
supply. Refer to the motor nameplate or inside terminal cover
for voltage changing instructions. The power lines should be
connected to the pressure switch terminals marked "line" (see
Fig. 1). It is recommended that a separate circuit be led from the
distribution panel to the pump unit. A ground fault interrupter
(GFI) protected circuit should be used for all electrical devices
operating near water. Install a proper fused disconnect switch in
the line and make certain the wiring is adequately sized and well
insulated. Undersized wire between the motor and the power
source will adversely limit the starting and load carrying abilities
of the motor. Minimum wire sizes for motor branch circuits are
recommended (see Table 1). For added safety, the pump and
motor should be grounded to the well casing or the ground in
the distribution panel.
f) Pressure Gauge: If a pressure gauge is supplied with the pump
or if you wish to install a pressure gauge, it should be installed
into the 1/4" NPT hole on the front of the casing directly beside
the discharge opening.
g) Air Volume Control: If no perma-pressure tank is used in a pres-
sure system, an air volume control must be used to maintain an
air cushion in the pressure tank. Refer to pressure tank owner's
manual for instructions.
h) Pressure Relief Valve: A high pressure safety relief valve is rec-
ommended to be installed at some point in the water system.
Ensure its location is near the discharge of the pump, in an area
with adequate drainage. Be sure to direct the valve such that any
water flow could not spray toward any electrical devices.
Fig. 1 Electrical Connections
Motor (Load)
TABLE 1 – MAXIMUM WIRE LENGTH (FT)
Motor
HP Volts 0-25 ft
1/2 115 14
3/4 115 14
1 115 14
Based on approx. 3% voltage drop.
2
Power
Supply
L1
L2
(Line)
Ground
Pressure
Switch
Wire Gauge (AWG)
50 ft 100 ft 150 ft 200 ft
14 12 10
14 10 8
12 10 8
8
8
6