ELECTRICAL

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 voltage motors.

Install, ground, wire, and maintain your pump in compli-

ance 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.

Motor wires connect here.

-Powersupply wires connect here.

230Volt: Connect 2 hot wires (black and red) here and cap the white (neutral) wire. It does not matter which wire goes to whichscrew.

115Volt: Connect one hotwire (black or red) to one of these screws (it doesn'tmatter whichone). Connect the white (neutral) wire

to the other screw. Cap any remaining black or red wires.

L;lampthe power cable to prevent strain on the terminal screws.

- Connect the green (or bare copper) ground wire

 

to the green ground screw.

31870398

Figure 6 - Pressure Switch Wiring

Connection Procedure:

1.Connect the ground wire first as shown in Figure 4. The ground wire must be a solid copper v_tre at least as large as the power supply w'tres.

2.There must be a solid metal connection between the

pressure switch and the motor for motor grounding pro-

tection, ff the pressure switch is not connected to the motor, connect the green ground screw in the switch to the green ground screw tinder 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 service

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 6.

 

Table

II Wiring

Chart -

Recommended

Wire and Fuse Sizes

 

 

 

 

 

 

Distance in Feet from Motor to Meter

 

 

 

Branch

0'to

101'to

201'to

301'to

401'to

Motor

 

Max. Load

Fuse*

100'

200'

300'

400'

500'

Horsepower

Volts

Amps.

Rating Amps

 

Wire Sizt

 

 

1/2

115/230

10.5/5.2

15/15

1_14

1_14

_14

_14

_12

OPERATION

Priming the Pump

NOTICE: To properly prime the pump, install a pipe tee in

the discharge piping (see Figure 1, Page 4).

To prevent damage to internal parts, do not start motor until pump has been filled with water.

To prime pump:

1. Remove priming plug (Purchase separately; Figure 1, Page 4).

2.Fill pump with water.

3.Replace priming plug, using Teflon tape or Plasto-Jcdmt stik 2 on plug threads; tighten plug.

4.Start the pump. Water should be pumped in 1-2 minutes. ff not, repeat steps 1, 2 and 3.

On shallow depths to water (10 feet or less), the pump

will probably prime the first time after the following steps 1 through 4 above.

From 10 to 20 foot depths, you might have to shut off the pump and repeat steps 1, 2 and 3 several times.

5, If, after priming pump several times, no water is

pumped, check the following:

A. Be sure suction pipe is in the water.

B. Be sure suction pipe does not leak.

C. Be sure that pump is not trying to llft water too high (see "Piping in the Well", Page 4).

D. As long as foot valve and check valve function cor- rectly and suction pipe does not develop leaks, pump

should not need repriming in normal service.

z Lake Chemical Co., Chicago, Illinois

Page 7
Image 7
Sears 390.2521 owner manual Operation, Recommended Wire and Fuse Sizes

390.2521 specifications

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