Sears CRAFTSMAN 390.252157 User Manual (English)

Questions and Answers:

A
amyblackAug 12, 2025
What to do if my Sears CRAFTSMAN 390.252157 pump pumps water but does not shut off?
- R
  Ricky JohnsonAug 12, 2025
  If your Sears Water System pump continues to run even when water is being pumped, there are several possible solutions: * Ensure all faucets are closed. * The pressure switch may need adjustment or replacement if its contacts are frozen. * The jet or impeller might need cleaning. * Refer to the wiring instructions. * Consider the possibility of using a deep well jet pump.
K
karen04Aug 16, 2025
Why is my Sears CRAFTSMAN 390.252157 motor running hot and the overload keeps kicking off?
- D
  Donald HessAug 16, 2025
  If the motor of your Sears Water System runs hot and the overload protection activates, consider the following: * Refer to the wiring instructions. * Check with your power company and consider installing heavier wiring if the current wiring is too small. See the wiring instructions for details. * Consult the section addressing too frequent cycling.
A
amy32Aug 20, 2025
What to do if my Sears CRAFTSMAN 390.252157 Water System pump cycles too frequently?
- J
  Jason BlackAug 20, 2025
  If your Sears Water System pump is cycling too frequently, consider these solutions: * Check the connections and replace any faulty pipe fittings. * Ensure all faucets or valves are completely closed. * Replace the foot valve if necessary. * Adjust or replace the pressure switch. * To check the air pressure in the tank, first, disconnect electrical power and open the faucets until all pressure is relieved. Use an automobile tire pressure gauge to check the air pressure at the valve stem on top of the tank. If it's below 30 pounds, use an external source to pump air into the tank until it reaches 30 pounds. Check the air valve for leaks using a soapy solution and replace the core if needed.
J
jackie31Aug 27, 2025
Why is there air spurting from the faucets of my Sears CRAFTSMAN 390.252157?
- E
  Eric HawkinsAug 28, 2025
  If you're experiencing air spurts from the faucets in your Sears Water System, here's what you can do: * Once the pump picks up prime, all air should be ejected. * Check the suction piping for leaks and ensure joints are not sucking air. * If the well is gaseous, change the installation as described in the manual. * If possible, lower the foot valve; otherwise, restrict the discharge side of the pump.
M
Michael EdwardsAug 31, 2025
What to do if my Sears Water System pump does not deliver water to full capacity?
- M
  Michael SmithAug 31, 2025
  If your Sears Water System pump isn't delivering water to its full capacity, here are some potential solutions: * If the water level in the well is lower than estimated, a deep well jet pump may be needed (if the water level is over 20 ft. deep). * If steel piping is corroded or limed, causing excess friction, replace it with plastic pipe where possible, or with new steel pipe. * If the offset piping is too small, use larger offset piping.
V
victoriacoleSep 4, 2025
How to troubleshoot leaks at the metal clamp of my Sears CRAFTSMAN 390.252157?
- P
  Philip BrownSep 4, 2025
  If you notice leaks at the metal clamp of your Sears Water System, follow these steps: * First, check if the clamp tightening screw is tight. If it is tight and slight leakage persists, place a piece of wood on the clamp's periphery and firmly tap the wood with a hammer. Repeat this around the clamp's edge and retighten the screw. * If the leak continues, disassemble the clamp and pump halves, then check that the “O” ring is properly seated and free of foreign material. Reassemble the pump.
E
Eugene MooreSep 8, 2025
How to fix a Sears CRAFTSMAN 390.252157 Water System motor that will not run?
- D
  Dr. Elizabeth Wiley MDSep 8, 2025
  If your Sears Water System motor isn't running, try the following: * Ensure the switch is turned on. * Replace the fuse. * Replace the starting switch. * Refer to the wiring instructions. * Clean the contacts by sliding a piece of plain paper between them.

Sears CRAFTSMAN 390.252157 Specifications

General

Brand	Sears
Model	CRAFTSMAN 390.252157
Category	Water System
Language	English

Summary

Introduction and Warranty

Warranty Information

Details Sears' full one-year, limited, and five-year warranties for the well pump and tank.

Safety Instructions

Safety Signal Words and Precautions

Explains DANGER, WARNING, CAUTION, NOTICE and provides critical safety instructions before installation and operation.

Basic Tools and Materials

Plastic Pipe Installation

Lists tools and materials required for installing plastic piping for the water system.

Galvanized Steel Pipe Installation

Lists tools and materials required for installing galvanized steel piping for the water system.

Major Components

Impeller and Jet Function

Describes the function of the impeller and jet in drawing water into the pump.

Pre-Charged Tank Purpose

Explains the dual function of the tank as a water reservoir and air cushion.

Pressure Switch Operation

Details the role of the pressure switch in automatic pump operation.

Check Valve and Foot Valve

Explains the purpose and installation of check valves and foot valves.

Installation

Piping in the Well

Guidance on installing piping in the well, including foot valves and strainers for various well types.

Pump and Tank Installation

Instructions for connecting the pump to the tank using Teflon tape and proper fittings.

Horizontal Piping Considerations

Advice on sizing suction pipes for horizontal runs to reduce friction loss.

Electrical System

Discharge Pipe Size Recommendations

Recommendations for increasing discharge pipe size to reduce friction loss over distance.

Tank Pre-Charge and Flushing

Details on setting tank air pressure and flushing air from the system for proper operation.

Wiring and Fuse Size Recommendations

Provides a chart detailing recommended wire and fuse sizes based on motor horsepower and distance.

Electrical Connections

Motor Wiring and Pressure Switch Connections

Step-by-step guide for connecting motor wires to the pressure switch for 115V and 230V systems.

Connection Procedure

Outlines the steps for making ground and power supply connections to the pressure switch.

Operation and Maintenance

Priming the Pump

Instructions for filling the pump with water to establish prime and ensure proper operation.

Lubrication

Information on the pump and motor lubrication requirements, noting self-lubricating parts.

Draining for Winter

Steps to safely drain the pump and system to prevent damage from freezing.

Vinyl Bag Removal and Replacement

Detailed procedure for removing and replacing the vinyl bag within the pre-charged tank.

Pump Maintenance

Air Valve Replacement

Steps for replacing the air valve on the tank, referencing vinyl bag removal procedures.

Testing for Bag Leakage

Procedure to check for leaks in the tank's vinyl bag and instructions for replacement.

Pump Disassembly and Assembly

Guide for taking apart and reassembling the pump for servicing the motor or seal.

Removing Motor for Service and Replacing Shaft Seal

Detailed instructions on separating the motor and replacing the shaft seal.

Component Cleaning

Cleaning Impeller

Steps to clean the pump impeller, referencing disassembly and seal replacement procedures.

Cleaning Shallow Well Jet

Procedure for removing debris from the pump's venturi and nozzle.

Helpful Hints

Handling Gaseous Wells

Technique for delivering gas-free water from wells containing dissolved gases, using a suspended pipe.

Troubleshooting Guide

Common Pump Issues and Solutions

Lists common pump problems, their possible causes, and recommended remedies.

Repair Parts Identification

Pump Assembly Parts

Exploded view diagram of the pump assembly with numbered parts for identification.

Tank Assembly Parts

Diagram and list of parts for the tank assembly, including diaphragm, elbow, and inlet flange.

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16 pages

Sears CRAFTSMAN 390.252157 User Manual

Table of Contents