SEARS OWNER'S MANUAL MODEL NO. 390.2521 I:RI:IFTSMI:IN° CAUTION: Read and Follow All Safety Rulesand Operating Instructions Before First Use of This Product. Save This Manual For Future Reference. PROFESSIONAL 1/2 HP SHALLOW WELL WATER SYSTEM • Safety Instructions • Installation • Electrical • Maintenance • Repair Parts Sears, Roebuck and Co., Hoffman Estates, IL 60179 PRINTED IN USA U.S.A.
CONTENTS INTRODUCTION INTRODUCTION/WARRANTY 2 PUMP PERFORS*L_CE bL_JOR COMPONENTS INST.M.L__TION ELECTRIC.M.
SAFETY INSTRUCTIONS 6. Disconnect electrical power source before installing or working on pump. 7. Ground pump with a ground wJ_e run from grounding lug on motor to a grounded lead in the service panel. TABLE 8. Line voltage and frequency of electrical power supply must agree with motor nameplate. 9. Use of fuses or wire smaller than size recommended in owner's manual can cause overheating, possible fires, and will void warranty.
INSTALLATION INSTALLATION Piping For a pump at sea level mounted directly over the well, be sure the total lift from the pumping water level to the pump does not exceed 20 feet. This will be less if the pump is offset from the well. in the Well The Shallow Well Water System can be installed on a dug well, drilled well or with a driven point. In a dug or cased well, a foot valve and strainer should be installed for easy priming.
INSTALLATION 1-1/4" 1-1/2" 2" Up to 25 Ft. 25 to 50 Ft. 50 to 200 Ft. quired on new installations, pumps pumps that have been disassembled follows: 1. Open erate. Discharge When the pttmp is some distance from the house or point of water use, the discharge pipe size should be increased to reduce pressure losses caused by friction. 1-1/4" 1-1/2" Up to 25 Ft. 25 to 1O0 Ft. 1O0 to 600 Ft. furthest from tank and allow pump 3. Open and close faucets air has been removed.
ELECTRICAL Disconnect Motor Switch power before working on pump, motor, pressure or wiring. Dial Type Voltage Selector Settings ff the motor can operate at either 115 or 230 volts, it is set at the factory to 230 volts. Do not change motor voltage setting if line voltage is 230 volts, or if you have a single voltage motor. NOTICE: Never wire a 115 volt motor to a 230 volt line.
ELECTRICAL Connection 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. 1. Install, ground, wire, and maintain your pump in compliance 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. 2.
MAINTENANCE Lubrication up. Flatten bag and force air out. 9. Tightly roll bag towards center opening. It is not necessary to lubricate the pump or its motor. The motor beatings are lubricated for life. The mechanical shaft seal in the pump is water lubricated and self-adjusting. 10. Before center opening is covered up, force air out of remaining portion of bag. Finish rolling bag. Draining 11. To make bag easier to insert of bag with talcum powder.
MAINTENANCE DISASSEMBLY AND ASSEMBLY OF PUMP AWARNING] Risk of electric disconnect power pump or motor. screwdrivers between the back purnp half and the motor flange. This will force rotating portion of seal off shaft. See Figure 7. shock. before Ground attempting any unit and work on Your Sears pmlap is designed for ease in servicing. Should repair or replacement of the motor or seal be needed, the pump and piping do not need to be disconnected or disturbed. 1. Disassemble pump A.
MAINTENANCE B. Wet outer edge of "O" Ring with detergent / HELPFUL solution. HINTS Cleaning Impeller C. With finger pressure press seat firmly and squarely into cavity. See Figure 9A. Polished face of seat faces inside of pump. If seat vdll not locate properly, place cardboard washer over polished face and use piece of 3/4" standard pipe for pressing purposes. See Figure 9B. I. Follow steps 1A through 1E under Assembly of Pump" on Page 8. "Disassembly and 2.
TROUBLESHOOTING TROUBLE Motor will not run POSSIBLE CAUSES GUIDE REMEDIES 1. Disconnect switch is off 2. Fuse is blown 3. Starting switch is defective 4. Wires at motor are loose, disconnected, or wired incorrectly *5. Motor is wired incorrectry 6. Pressure switch contacts are dirty 1. 2. 3. 4. Motor runs hot and overload kicks off "1. Motor is wired incorrectly 2. Voltage is too low 1. Refer to instructions on wiring 2. Check with power company. Install heavier wiring if wire size is too small.
REPAIR PARTS Pump Only- Model 390.2521 1 / 29 2 3O 3 4 5 8 28 9 10 24 11 16 17 \ 23 19 26 _25 2O 587 1193 22 12 \ 21
REPAIR PARTS Key No. Model 390.
REPAIR PARTS Tank Only - Model 390.2521 6 REPAIR PARTS Key No. Model 390.262"1 1/2 HP Part Number 1 29135 Qty. Used 1 Description Tank Assembly (Includes Diaphragm, Elbow, Valve, Nuts, Washers, & Inlet Flange) U20-13 "1 2 6-i- Bag - Vinyl Air Valve w/Cap 1 U31-446P 1 Inlet Flange Nut - 5/16-18 Hex 6 3t 4 5 1 U74-37H 1 Hose - 1" x 24-1/2" U19-55SS 2 Clamp 2 Adapter - 1" NPT (Male) x 1" Insert • Not illustrated. i Standard hardware item, may be purchased locally.
SEARS OWNER'S MANUAL I:RRFTSMRN° PROFESSIONAL 1/2 HP SHALLOW WELL WATER SYSTEM Model No. 390.
