5. Make sure that either:
A. Motor frame is connected to pressure switch by a
solid metal connection, or
B. Motor ground wire is connected to ground terminal
in switch.
Risk of electric shock. Do not operate pump unless
motor and pressure switch are connected to each
other by a solid metal connection and are grounded.
6. Replace pressure switch cover.
Pump is now wired for operation.
Operation
Priming the pump
Explosion Hazard. Do not run pump with
discharge shut off. Pump can boil water, causing steam
burns when opening pump or blowing up pump body or
can cause internal (seal) damage to pump.
NEVER run pump dry. Running pump with-
out water may overheat pump, damaging internal parts
and causing burns if handled. To prevent damage, fill
pump with water before starting.
1. Remove priming plug.
a. Fill pump and suction pipe with water. (Fig. 6)
b. Replace priming plug, using Teflon tape on plug
thread; tighten plug.
NOTICE: If priming tee and plug have been
provided for long horizontal run, be sure to fill
suction pipe through this tee and replace plug
(REMEMBER TO TEFLON TAPE THE PLUG).
c. Open faucet to allow air to escape during prime,
close faucet quickly when unit primes.
2. Start pump and run two minutes or less. Unit should
pump water. If not, stop pump and repeat steps under
No. 1. On first use of pump, it may be necessary to
reprime unit 2-3 times before all air is out of suction pipe.
3. If, after priming pump several times and no water is
pumped, make sure that:
a. Suction pipe end is in water.
b. Suction pipe has no air leaks.
c. Pump is not trying to lift water more than 20 ft. (6 M).
d. Pump is not air locked: Pump suction port should be
highest point in suction pipe; no sags in suction pipe
(run it straight and angled slightly upward from well
head to pump).
e. Piping is clean and in good condition.
NOTICE: As long as foot valve and check valve
function correctly and suction pipe does not develop
leaks, pump should not need repriming in normal
service.
Performance Chart
5
115 V Line
Black
Tracer
Black
L1
B
C
L2
Ground Wire
L1
L2
LINE
MOTOR
LINE
MOTOR
Figure 5
Branch
DISTANCE IN FEET (M) FROM MOTOR TO SUPPLY
Max.
Fuse*
0 - 50
51 - 100
101 - 200
201 - 300
301 - 400
401 - 500
Model
Motor
Load
Rating
(0 - 15)
(15 - 30)
(30 - 61)
(61 - 91)
(91 - 122)
(122 - 152)
No.
HP
Volts
Amps
Amps
AWG WIRE SIZE (mm
2
)
390.250290
1/2
115/230
9.4/4.7
15
14 (2)
14 (2)
10 (5)
8 (7)
8 (7)
8 (7)
390.251590
1/2
115/230
8.8/4.4
15
14 (2)
14 (2)
12 (3)
10 (5)
8 (7)
8 (7)
WIRING CHART Recommended Wire and Fuse Sizes
Figure 6 – Priming the Pump
Model
Disch.
GPM at depth to water
HP
PSI
5 Ft.
10 Ft.
15 ft.
20 Ft.
390.250290
40
7.3
6.2
5.2
4.2
390.251590
40
8.2
7.3
6.2
5.0
Pump
Pressure
Required Tank
Model
Switch Setting
Precharge
390.250290
20-40 PSI
20 PSI
390.251590
30-50 PSI
30 PSI
Ground Wire
L1
L2
LINE
MOTOR
LINE
MOTOR
230 V Line
Black
L1
B
C
L2
Black
Tracer
