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SEARS
OWNER'S
MANUAL
MODEL NO.
390.2521
I:RI:IFTSMI:IN°
PROFESSIONAL
CAUTION:
Read and Follow
1/2 HP SHALLOW WELL
All Safety Rulesand
WATER SYSTEM
Operating Instructions
Before First Use of
• Safety Instructions
This Product.
• Installation
Save This Manual For
• Electrical
Future Reference.
• Maintenance
• Repair Parts
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
PRINTED IN USA Form No F642-04075 (8/3/o4)
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CONTENTS INTRODUCTION INTRODUCTION/WARRANTY 2 Please read our mstructions before mstallmg and usmg }'our PUMP PERFORS*L_CE 3 Shallow Well Water System Tilts will help you obtain the full benefits of the qua]ity and convenience budt into this bL_JOR COMPONENTS 3 equipment It wall also help you avoid any needless setaace INST.M.L__TION 4-5 expense resulting from causes beyond our control which are ELECTRIC.M. 6-7 not covered by our warranty OPERATION MAINTEN?O,rCE 8-10 HELPFUL HINTS 10 TROUBLESHOO
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SAFETY INSTRUCTIONS (Continued) 6. Disconnect electrical power source before installing or 8. Line voltage and frequency of electrical power supply must agree with motor nameplate. working on pump. 9. Use of fuses or wire smaller than size recommended in 7. Ground pump with a ground wJ_e run from grounding lug on motor to a grounded lead in the service panel. owner's manual can cause overheating, possible fires, and will void warranty. TABLE I - Pump Performance (In Gallons per Minute) NOTE: Thi
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INSTALLATION For a pump at sea level mounted directly over the well, be INSTALLATION 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 off- Piping in the Well set from the well. The Shallow Well Water System can be installed on a dug The maximum lift of any pump decreases at the rate of about well, drilled well or with a driven point. In a dug or cased 1' less lift for every 1,000 feet of elevation above sea level. well, a foot
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INSTALLATION quired on new installations, pumps requiring repriming and 1-1/4" 1-1/2" 2" pumps that have been disassembled for service. Do this as follows: Up to 25 Ft. 25 to 50 Ft. 50 to 200 Ft. 1. Open faucets furthest from tank and allow pump to op- erate. 2. Air in the system will cause a sputtering flow; allow Discharge Pipe Sizes faucets to run until you have a steady, air free stream. When the pttmp is some distance from the house or point 3. Open and close faucets repeatedly until you ar
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ELECTRICAL Disconnect power before working on pump, motor, pressure switch, or wiring. Motor Switch Settings Dial Type Voltage Selector ff the motor can operate at either 115 or 230 volts, it is set Power Supply Connections 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. Remove Motor End Cover Ground Wire Connection Figure 5 - Voltage Set To 230 Volts, Dia
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ELECTRICAL Connection Procedure: NOTICE: Dual-voltage motors are factory wired for 230 volts. If necessary, reconnect the motor for 115 volts, as 1. Connect the ground wire first as shown in Figure 4. The shown. Do not alter the wiring in single voltage motors. ground wire must be a solid copper v_tre at least as large Install, ground, wire, and maintain your pump in compli- as the power supply w'tres. ance with the National Electrical Code (NEC) or the 2. There must be a solid metal connection
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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 10. Before center opening is covered up, force air out of re- motor beatings are lubricated for life. The mechanical shaft maining portion of bag. Finish rolling bag. seal in the pump is water lubricated and self-adjusting. 11. To make bag easier to insert into tank, sprinkle outside Draining for Winter of bag with talcum powder. 12. B
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MAINTENANCE screwdrivers between the back purnp half and the motor DISASSEMBLY AND flange. This will force rotating portion of seal off shaft. ASSEMBLY OF PUMP See Figure 7. AWARNING] Risk of electric shock. Ground unit and disconnect power before attempting any work on pump or motor. 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 dis- turbed. 1. Disassemble pump as follows: A.
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MAINTENANCE / HELPFUL HINTS B. Wet outer edge of "O" Ring with detergent solution. Cleaning Impeller C. With finger pressure press seat firmly and squarely I. Follow steps 1A through 1E under "Disassembly and into cavity. See Figure 9A. Polished face of seat faces Assembly of Pump" on Page 8. inside of pump. If seat vdll not locate properly, place 2. Remove diffuser and impeller from pump per instruc- cardboard washer over polished face and use piece of tions under "Removing Motor for Service an
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TROUBLESHOOTING GUIDE TROUBLE POSSIBLE CAUSES REMEDIES 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, 4. Refer to instructions on wiring disconnected, or wired incorrectly *5. Motor is wired incorrectry 5. Refer to instructions on wiring 6. Pressure switch contacts are dirty 6. Clean by sliding piece of plain paper between contacts Motor runs hot and "1
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REPAIR PARTS Pump Only- Model 390.2521 1 2 / 4 3 3O 29 5 8 28 9 10 24 11 16 17 \ 23 19 26 _25 2O 587 1193 \ 22 21 12
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REPAIR PARTS Key Model 390.2521 Part No. 1/2 HP Description 1_-_ - J218-953C Motor - 1/2 HP - 115/230V - 60 Cycle 2 17351 -OOO9 Water Slinger 3* Reducer Bushing - 1/2" x 1/8" NPT 4 WC78-41T Pipe Plug - 1/8" NPT 5 L176-47P Tank Body (Back Half) 6 U9-399 "O" Ring - Tank Body - 9-1/2"x 9" x 1/4" 7 U 109-6A Shaft Seal 8 J105-4OPE Impeller 9 J1-39P Diffuser 10 C19-54SS Clamp - Tank Body 11 U9-201 "O" Ring - Venturi - 1-3/8" x 1-1/8" x 1/8" 12 N32P-66 Venturi 13 N34P-19 Nozzle 14 N76-29P Insert 15 J20
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REPAIR PARTS Tank Only - Model 390.2521 6 REPAIR PARTS Model 390.262"1 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 "1 Air Valve w/Cap 2 U31-446P 1 Inlet Flange 6 Nut - 5/16-18 Hex 3t U74-37H 1 Hose - 1" x 24-1/2" 4 5 U19-55SS 2 Clamp 2 6-i- Adapter - 1" NPT (Male) x 1" Insert • Not illustrated. i Standard hardware item, may be purchased locally. 14
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SEARS I:RRFTSMRN° OWNER'S PROFESSIONAL MANUAL 1/2 HP SHALLOW WELL WATER SYSTEM Model No. 390.2521 For the repairor replacementpartsyouneed Call7 am - 7 pm, 7 daysa week 1-800-366-PART (1-800-386-7278) Forin-homemajor brandrepairservice Call24 hoursa day,7 daysa week t -8OO-4-REPAIR (1-800-473-7247) The model number of your Shallow Well Water Forthe locationof a Systemwill be found on SearsRepairServiceCenterinyourarea the pump body Call24 hours a day,7 daysaweek 1-800-488-1222 When requesting se
