Wiring Connections
Fire hazard.
Incorrect voltage can cause
a fire or seriously damage the motor and voids the war-
ranty. The supply voltage must be within ±10% of the
motor nameplate voltage.
NOTICE:
Dual-voltage motors are factory wired for
230 volts. If necessary, reconnect the motor for 115
volts, as shown. Do not alter the wiring in single volt-
age motors.
Install, ground, wire, and maintain your pump in com-
pliance with the National Electrical Code (NEC) or the
Canadian Electrical Code (CEC), as applicable, and
with all local codes and ordinances that apply. Consult
your local building inspector for code information.
Connection Procedure
1. Connect the ground wire first as shown in Figure 14.
The ground wire must be a solid copper wire at least
as large as the power supply wires.
2. There must be a solid metal connection between the
pressure switch and the motor for motor grounding
protection. If the pressure switch is not connected
to the motor, connect the green ground screw in the
switch to the green ground screw under the motor
end cover. Use a solid copper wire at least as large
as the power supply wires.
3. Connect the ground wire to a grounded lead in a ser-
vice panel, to a metal underground water pipe, to a
metal well casing at least ten feet (3M) long, or to a
ground electrode provided by the power company
or the hydro authority.
4. Connect the power supply wires to the pressure
switch as shown in Figure 14, Page 9.
Priming The Pump
Burn hazard. NEVER run pump dry.
Running pump without water may cause pump
to overheat, damaging seal and possibly causing
burns to persons handling pump. Fill pump with
water before starting.
Risk of explosion and steam burns.
NEVER run pump with discharge shut off, which
can boil water inside pump body. Steam in pump
may cause it to explode and scald anyone near.
NOTICE:
Open water system faucets before priming
pump for the first time.
1. Remove pressure gauge.
a. Close regulator valve (turn clockwise - see Figure
15A).
b. Fill pump and suction pipe with water (Figure
15B).
c. Replace pressure gauge, using Teflon tape on
thread; tighten gauge.
NOTICE:
If a priming tee and plug have been installed
for a long horizontal run, be sure to fill suction pipe
through this tee and replace plug. (Don’t forget to
teflon tape the plug.)
2. Start Pump:
Pressure should increase rapidly to 50 pounds per
square inch or more as ejector and pump prime. If
so, go to step 4, below.
If pressure does not build to 50 PSI
, repeat steps a,
b, and c under Step No.1 two or three times to re-
move entrapped air from the suction pipes.
ELECTRICAL / OPERATION
10
20
100
80
60
40
2361a 0697
2360a 0697
20
100
80
60
40
1030a 0697
Figure 15 – Priming Pump
A – Close Regulator
➡
B – Fill Pump With Water
➡
C – Start Pump
➡
D – Adjust Regulator
ON
WIRING CHART –
Recommended Wire and Fuse Sizes
(*)Time delay fuse or circuit breakers are recommended in any motor circuit.
MOTOR
MAX. LOAD
BRANCH FUSE*
DISTANCE IN FEET FROM MOTOR TO METER
HP
VOLTS
AMPS
RATING (AMPS)
0 to 50
51 to 100
101 to 200
201 to 300
1
115/230
19.2/9.6
25/15
10/14
10/12
8/10
6/10
