Sears CRAFTSMAN 390.253251 Owner's Manual
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Sears CRAFTSMAN 390.253251 Owner's Manual

Multi-stage jet pump
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OWNER'S
MANUAL
MODEL NO.
390.253251
CAUTION:
Read and Follow
All Safety Rules and
Operating Instructions
Before First Use of
This Product.
Save This Manual For
Future Reference.
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
PRINTED IN U.S.A.
MULTI-STAGE JET PUMP
• Safety Instructions
• Installation
• Electrical
• Operation
• Maintenance
• Repair Parts
®
F642-9807
Form No.
(Rev. 9/25/02)

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Summary of Contents for Sears CRAFTSMAN 390.253251

  • Page 1 Before First Use of • Installation This Product. • Electrical Save This Manual For • Operation Future Reference. • Maintenance • Repair Parts Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A. PRINTED IN U.S.A. F642-9807 Form No. (Rev. 9/25/02)

  • Page 2: Table Of Contents

    ® WELL PUMP For one year from the date of purchase, Sears will repair or replace this pump, free of charge, if defective in material or workmanship. This warranty does not cover repairs or replacement parts necessary because of abuse or negligence including failure to install, adjust and operate this pump according to the instructions in the owner’s manual.

  • Page 3: Major Components

    AVC. An annual sure. Install a relief valve (Sears Stock No. 27229) set check on the tank pre-charge pressure is recom- to open at 75 PSI.

  • Page 4: Pump Performance

    * Jet Package No. 29670 – 2” Single Pipe (use 1-1/4” galvanized pipe). ** Jet Package No. 29902 – 3” Single Pipe (use 1-1/4” galvanized pipe). *** Jet Package No. 29660 – 4” Double Pipe. † Must be ordered through Sears Product Service, 1-800-366-7278.

  • Page 5: Installation

    INSTALLATION Do not use on shallow wells! Dirt and Scale Plug Pump and Pipes! (25 feet or less in depth) Use New Pipe for Best Results. Deep well is more than 25' (7.6M) to water with Pump pump running. Body Well Clean Flow! Casing...
  • Page 6 DEEP WELL INSTALLATION FOR DOUBLE PIPE Pump Pump Priming Tee and Gasket Gasket Plug Adapter Flange Adapter Flange Union Threadless Coupling Suction: 1-1/4" Drive: Pipe or Plastic Threadless Coupling Sanitary Sanitary 1-1/4" Pipe Well Seal Well Seal Pipe Adapter or Plastic Steel Pipe Nipple Coupling Pipe...
  • Page 7 DEEP WELL INSTALLATION FOR SINGLE PIPE Pump mounted on Casing Adapter Lever Hoist Offset Nipple Pipe Clamp Well Casing Water level serves as Pipe Clamp with pump Drive Pipe running Suction Pipe Venturi Figure 10A – Use tripod and lever hoist to lower pipe into the well 10 to 20 Feet Nozzle...
  • Page 8 PRESSURE TANK CONNECTION TANK Air Volume Control To Service Sears Stock No. 2761 TANK Pressure Regulator Pump to Tank Piping 1” Discharge 1 0 0 Relief Valve Sears Stock No. 27229 Pressure AVC Fitting Regulator Piping Tee and Air Volume Control Tubing/Fitting 1”...

  • Page 9: Electrical

    ELECTRICAL Disconnect power before working on pump, motor, pressure switch, or wiring. Your Motor Terminal Board (under the motor end cover) if line voltage is 230 Volts or if you have a single voltage and Pressure Switch look like one of those shown below. motor.

  • Page 10: Operation

    ELECTRICAL / OPERATION WIRING CHART – Recommended Wire and Fuse Sizes MOTOR MAX. LOAD BRANCH FUSE* DISTANCE IN FEET FROM MOTOR TO METER VOLTS AMPS RATING (AMPS) 0 to 50 51 to 100 101 to 200 201 to 300 115/230 19.2/9.6 25/15 10/14...

  • Page 11: Helpful Hints / Maintenance

    OPERATION / MAINTENANCE 3. If pressure does not build up after priming pump 5. Pump may draw well down far enough at this point several times, check the following: to lose its prime. If so, close regulator valve until pressure is stable throughout pumping cycle. Close a.
  • Page 12 MAINTENANCE Using the Compound Gauge Pump Diassembly If the pump or system seems to be operating ineffi- 1. Pull disconnect switch. Disconnect power lines ciently, the compound gauge can sometimes help de- from pressure switch. termine the problem. 2. Remove the two cap screws holding the pump to A compound gauge is a combination vacuum and pres- the flange adapter.
  • Page 13 MAINTENANCE 8. Hold the motor shaft with pliers or vice grips 11. Remove the intermediate volute and slide the im- through the opening in the pump adapter. Unscrew peller spacer off of the shaft. the impeller nut off the end of the shaft (see Figure 12.
  • Page 14 MAINTENANCE 4. Carefully slide the adapter over the shaft (see 9. Install the intermediate volute, aligning it with the Figure 24). Do not damage the shaft sealing surface; mark made before disassembly. Use the long cap it is highly polished and any slight scratches or nicks screws to check this alignment.

  • Page 15: Troubleshooting Guide

    TROUBLESHOOTING CHART SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION Motor will not run 1. Disconnect switch is off 1. Be sure switch is on 2. Fuse is blown 2. Replace fuse 3. Starting switch is defective 3. Replace starting switch 4. Wires at motor are loose, discon- 4.

  • Page 16: Repair Parts

    REPAIR PARTS Multi-Stage Jet Pump 1 0 0 1281 0994 Pressure Regulator 1 0 0 2080 1095...
  • Page 17 U36-36ZP Nut 1/4-20 U78-107DT Reducer Bushing 1/2x1/8 NPT U239-3 Pressure Gauge 0-100# J24-13 Spring J61-5 Spring Guide J52-9 Bonnet To Order Parts, U30-60ZP Capscrew 5/16-18x3/4” Lg. (4 Req.) Call Sears Product Service, U30-69FTZP Adjusting Screw 5/16-18x2” 1-800-366-7278 U36-205ZP Locknut 5/16-18...
  • Page 18 REPAIR PARTS Vertical Casing Adapters and Adapter Flanges To Order Parts, for Multi-Stage Jet Pump Call Sears Product Service, 1-800-366-7278 489 0194 Adapter Flange Casing Adapter Repair Parts List - Adapter Flange Part Number Part Description J20-12 Adapter Gasket J2-17B Adapter –...
  • Page 19 REPAIR PARTS Jet Packages 2” and 3” Single Pipe Jets 4” Double Pipe Jets Suction Pipe: 1-1/4" Drive Pipe: 1" Well Seal Adapter Steel Nipple Coupling Adapter Well Casing Drop Pipe 1" Pipe Adapter 1361 1094 1320 1094 Repair Parts List – Jet Packages 1360 1094 29670 29902...
  • Page 20 Maintenance Agreement or to inquire about an existing Agreement call 9 am - 5 pm, Monday-Saturday • Product Type 1-800-827-6655 • Model Number • Part Number • Part Description REPAIR SERVICES America's Repair Specialists Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.

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