Sears 390.250251 Скачать руководство пользователя страница 2

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REPAIR PARTS

Key

Part

No.

Number

Description

2761

Air Volume Control

U78-774P

Reducer Bushing - 1-1/4” x 1/4” NPT

36*

U37-17GPT

Nipple - 1/4” x 1-1/2”

U37-205P

Tube - AVC

U111-86T

Compression Fitting Elbow - 1/4” NPT

U111-100T

Compression Fitting Straight - 1/8” NPT

* Standard hardware item. May be purchased locally.

Sears Shallow Well Jet Pump

1/2 HP Model 390.250251

Air Volume Control Package

(Not Furnished - Must be purchased separately)

Key

Part

No.

Number

Description

U18-1103

Overload

U18-1180

Terminal Board

U18-1098

Contactor

U18-128

Governor

U18-526

Capacitor

Motor Service Parts

Wiring omitted

for clarity

Содержание 390.250251

Страница 1: ...or to inquire 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 REPAIRSERVICES America s Repair Specialists REPAIRSERVICES Sears Roebuck and Co Hoffman Estates IL 60179 U S A OWNER S MANUAL Model No 390 250251 The model number of your Shallow Well Jet Pump will b...

Страница 2: ...11 100T Compression Fitting Straight 1 8 NPT Standard hardware item May be purchased locally Sears Shallow Well Jet Pump 1 2 HP Model 390 250251 Air Volume Control Package Not Furnished Must be purchased separately Key Part No Number Description 1A U18 1103 Overload 1B U18 1180 Terminal Board 1C U18 1098 Contactor 1D U18 128 Governor 1E U18 526 Capacitor Motor Service Parts 1A L1 L2 1B 1C 1D 1E Wi...

Страница 3: ...176 21T 1 Pump Body Assembly 14 N212 12P 1 Check Valve 15 U78 56CT 1 Pipe Plug 1 8 NPT Square Head 16 U78 57CT 1 Pipe Plug 1 4 NPT Square Head 17 U30 75ZP 4 Capscrew 3 8 16x1 1 4 Hex Head 18 U37 672P 1 Switch Tube 19 2764 1 Pressure Switch 20 U36 112ZP 1 Locknut 1 2 21 L43 5C 1 Connector F642 2392 1 Owner s Manual To Order Parts Call Sears Product Service 1 800 366 7278 Includes Key Nos 9 10 13 an...

Страница 4: ...buried in sand or mud Pump does not 1 Water level in well is lower than 1 A deep well jet pump may be needed over 20 ft to water deliver water to full estimated capacity Also 2 Steel piping if used is corroded or 2 Replace with plastic pipe where possible otherwise with check point 3 limed causing excess friction new steel pipe immediately above 3 Offset piping is too small in size 3 Use larger of...

Страница 5: ... Insert an ice pick or other small diameter pointed tool through the venturi and into the nozzle This will dislodge foreign material 4 Foreign material will drop to the bottom of the pump body directly below the nozzle and must be removed 5 Replace all parts Connect motor wiring and turn on power HOW TO HANDLE A GASEOUS WELL In some localities well water contains gases which must be allowed to esc...

Страница 6: ...d 3 Carefully tap diffuser to remove from seal plate 4 Remove canopy from end of motor 5 Partially unscrew capacitor clamp move capacitor to one side 6 Hold motor shaft with 7 16 wrench on the flats on the motor shaft and unscrew impeller Removal of Old Seal 1 After unscrewing impeller carefully remove rotat ing part of seal by prying up on sealing washer using two screwdrivers see Figure 5A Use c...

Страница 7: ... motor connect ground screw in switch to motor ground screw Use a solid copper wire at least as large as power supply wires Connect ground wire to grounded lead in service panel metal underground water pipe well casing at least 10 3M long or to ground electrode pro vided by power company 3 Connect power supply wires as shown at left 4 Replace pressure switch cover before turning on power to pump 6...

Страница 8: ...e the 1 8 pipe plug Key No 15 Page 10 on the jet portion of the pump body near the check valve Insert a 1 8 compression fitting into this tapping Cut tubing to length and assemble the two fittings in the air volume control and pump body Use nuts sleeves and inserts furnished Priming the Pump Never run pump dry Running pump without water may cause pump to overheat dam aging seal and possibly causin...

Страница 9: ...sed if horizontal piping is 25 ft or more Drive Coupling Check Valve Driven Point 1 1 4 Steel Drive Pipe Priming Tee To Service Pressure Switch From Well Built in Check Valve Plastic pipe Adapter Air Volume Control 1 1 4 Plastic Pipe Drain Plug Air Volume Control tube 205 0295 Priming Tee To Service 1 1 4 Plastic Pipe Pressure Switch From Well Built in Check Valve Plastic pipe Adapter 1 Hose Drain...

Страница 10: ...r sediment may clog it Before installing foot valve check to see that it work freely When using a foot valve a priming tee and a plug as shown in Figure 1 is recommended Be sure the total lift from the pumping water level to the pump does not exceed 20 feet if the pump is over the well or less if the pump is offset from the well Both figures are for sea level the maximum lift at which the pump can...

Страница 11: ...al current supply agree with the motor wiring as shown on motor nameplate 10 The correct fusing and wiring sizing is essential to proper motor operation Use recommended fusing and wire size data in the manual Page 6 11 Pump water only with this pump 12 Periodically inspect pump and system components 13 Relief valve must be capable of passing full pump flow at 75 PSI Pump body may explode if used a...

Страница 12: ... Instructions 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 Parts PRINTED IN U S A SHALLOW WELL JET PUMP Form No F642 2392 Rev 3 4 96 FOR POSITION ONLY ...

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