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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.

Connection Procedure:

1.

Connect the ground wire first as shown in Figure 4. 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 pro-
tection. 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 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. 

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-Joint
Stik

2

on plug threads; tighten plug.

4.

Start the pump. Water should be pumped in 1-2 minutes.
If 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 lift 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.

2

Lake Chemical Co., Chicago, Illinois

7

Figure 6 – Pressure Switch Wiring

Clamp the power cable to prevent strain 
on the terminal screws.

Connect the green (or bare copper)  ground wire 
to the green ground screw.

Motor wires 

connect here

.

3187 0398

Power supply wires

 connect here. 

230 Volt:

 Connect 2 hot wires (black and red)

here and cap the white (neutral) wire. It does
not matter which wire goes to which screw. 

115 Volt:

 Connect one hot wire (black or red)

to one of these screws (it doesn't matter 
which one). Connect the white (neutral) wire 
to the other screw. Cap any remaining 
black or red wires.

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 Size

1/2

115/230

10.5/5.2

15/15

14/14

10/14

8/14

6/14

6/12

Содержание CRAFTSMAN 390.2521

Страница 1: ...tructions Before First Use of This Product Save This Manual For Future Reference Sears Roebuck and Co Hoffman Estates IL 60179 U S A Safety Instructions Installation Electrical Maintenance Repair Part...

Страница 2: ...covered while installing pump to prevent leaves and other debris from falling into well con taminating well and possibly damaging pump 4 Protect pump and piping system from freezing Allowing pump or...

Страница 3: ...nto the pump Pre Charged Tank The tank serves two functions It provides a reservoir of water under pressure and maintains a cushion of air pres sure to prevent pipe hammering and possible damage to pl...

Страница 4: ...ould pump water would therefore be 15 feet PUMP TANK INSTALLATION Pump NOTICE Use Teflon tape supplied with the pump or Plasto Joint Stik1 for making all pipe thread connections to the pump itself To...

Страница 5: ...low faucets to run until you have a steady air free stream 3 Open and close faucets repeatedly until you are sure all air has been removed 4 If stream does not become steady air may be leaking into th...

Страница 6: ...dial counter clockwise until 115 shows in the dial window 3 Reinstall the Motor end cover 4 Go to Wiring Connections below Hazardous voltage Can shock burn or kill Connect ground wire before connectin...

Страница 7: ...ately Figure 1 Page 4 2 Fill pump with water 3 Replace priming plug using Teflon tape or Plasto Joint Stik2 on plug threads tighten plug 4 Start the pump Water should be pumped in 1 2 minutes If not r...

Страница 8: ...f tank 8 Place replacement bag on a clean surface with opening up Flatten bag and force air out 9 Tightly roll bag towards center opening 10 Before center opening is covered up force air out of re mai...

Страница 9: ...f O ring and clamp E Assemble base mounting bolts Connect pressure switch tubing and close drain cock F Prime pump and turn on power G Check for leaks Removing Motor for Service and Replacing Shaft Se...

Страница 10: ...ions under Removing Motor for Service and Replacing Shaft Seal on Pages 9 and 10 Cleaning Shallow Well Jet To remove debris from venturi or nozzle proceed as follows 1 Disassemble pump per instruction...

Страница 11: ...causing excess friction new steel pipe above 3 Offset piping is too small in size 3 Use larger offset piping Pump pumps water 1 Pressure switch is out of adjustment 1 Adjust or replace pressure switc...

Страница 12: ...13 14 15 16 17 18 19 20 21 22 23 25 26 26A 27 28 29 30 587 1193 24 Pump Only Model 390 2521 To Order Parts in the U S A Call Sears Product Service 1 800 366 7278 To Order Parts outside the U S A Call...

Страница 13: ...16 N176 28PB Tank Body Assembly Front Half Includes Key No s 11 12 13 14 15 16 19 20 21 23 and 24 16 N76 28P Tank Body Only Front Half 17 U37 673P Switch Tube 18 U111 212T 90 Hose Barb 19 U9 226 O Ri...

Страница 14: ...or Store Model 390 2521 Key 1 2 HP Qty No Part Number Used Description 1 29135 1 Tank Assembly Includes Diaphragm Elbow Valve Nuts Washers Inlet Flange U20 13 1 Bag Vinyl 1 Air Valve w Cap 2 U31 446P...

Страница 15: ...15...

Страница 16: ...about an existing Agreement call 9 am 5 pm Monday Saturday 1 800 827 6655 M A I N T E N A N C E A G R E E M E N T America s Repair Specialists REPAIRSERVICES America s Repair Specialists REPAIRSERVICE...

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