Troubleshooting Guide

TROUBLE

Motor will not run

Motor runs hot and overload kicks off

Motor runs but no water is delivered

(*Note: Check prime before book- ing for other causes. Unscrew

priming plug and see if there is water

in priming hole)

Pump does not deliver water to full capacity (also check point 3 immediately above)

Pump pumps water but does not shut off

Pump cycles too frequently

Air spurts from faucets

POSSIBLE CAUSES

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. Motor is wired incorrectly

2.Voltage is too low

3.Pump cycles too frequently

"1. Pump in a new instarlation did not pick up prime through:

a. Improper pdming b. Air leaks

c. Leaking foot valve

*2. Pump has lost its prime through: a. Air leaks

b. Water level below suction of pump

3.Jet or impeller is plugged

4.Check valve or foot valve is stuck in closed position

5.Pipes are frozen

6.Foot valve and/or strainer are buried in sand or mud

1.Water level in well is lower than estimated

2.Steel piping (if used) is corroded or limed, causing excess friction

3.Offset piping is too small in size

1.Pressure switch is out of adjustment or contacts are "frozen"

2.Faucets have been left open

3.Jet or impeller is clogged

4.Motor is wired incorrectly

5.Water level in well is lower than estimated

1.Pipes leak

2.Faucets or valves are open

3.Foot valve leaks

4.Pressure switch is out of adjustment

5.Air charge too low in Captive Air_ Tank

1.Pump is picking up prime

2.Leak in suction side of pump

3.Well is gaseous

4.Intermittent over-pumping of well

REMEDIES

1.Be sure switch is on

2.Replace fuse

3.Replace starting switch

4.Refer to instructions on wiring

5.Refer to instructions on wiring

6.Clean by sliding piece of plain paper between contacts

1.Refer to instructions on wiring

2.Check with power company. Install heavier wiring if wire size is too small. See wiring instructions

3.See section below on too frequent cycling

1.In new installation:

a. Re-prime according to instructions

b.Check all connections on suction line and jet

c.Replace foot valve

2.In installation already in use:

a.Check all connections on suction line, jet and shaft sea

b.Lower suction line into water and re-prime. If receding water level in a shallow well operation exceeds suction lift, a deep well pump is needed

3.Clean jet or impeller according to instructions

4.Replace check valve or foot valve

5.Thaw pipes. Bury pipes below frost line. Heat pit or pump house

6.Raise foot valve and/or strainer above well bottom

1.A deep well jet pump may be needed (over 20 ft. to water

2.Replace with Plastic Pipe where possible, otherwise with new steel pipe

3.Use larger offset piping

1.Adjust or replace pressure switch

2.Close faucets

3.Clean jet or impeller

4.Refer to instructions on wiring

5.Check possibility of using a deep well jet pump

1.Check connections, replace pipe fittings

2.Close faucets or valves

3.Replace foot valve

4.Adjust or replace pressure switch

5.Disconnect electrical power and open faucets until all pressure is relieved. Using automobile tire pressure gauge, check air pressure in tank at the valve stem located at top of tank. if less than 40 pounds, pump air into tank from outside source, until 40 pounds pressure is reached. Check air valve for Feaks,using soapy solution, and replace core if necessary

1.As soon as pump picks up prime, all air will be ejected

2.Check suction piping, make sure joints are not sucking aim

3.Change installation as described in manual

4.Lower foot valve if possible, otherwise restrict discharge side of pump

Leaks at the metal clamp

I_,WARNING_

Release arl pressure in system before

working on clamp!

1. Loose clamps or "O" ring	1. First check	the	clamp	tightening screw to see if it is tight.
not sealed	If it is tight	and	slight	leakage still occurs, place a piece

of wood on the periphery of the clamp and firmly tap the wood with a hammer. Repeat this operation around the edge of the clamp and retighten the clamp screw, rf leak continues, disassemble clamp and pump halves and check to see that "O" ring is properly seated and no foreign material is on "O" ring or "O" seat.

Reassemble pump.

]]

390.2521 specifications

The Sears 390.2521 is a notable addition to the world of household appliances, particularly recognized for its versatility and user-friendly design. This multi-functional device is primarily known as a microwave oven, making it a staple in many kitchens. With its compact build and efficient performance, the 390.2521 caters to various cooking needs, from heating leftovers to preparing entire meals.

One of the main features of the Sears 390.2521 is its powerful microwave generator, which typically operates at a wattage of around 900 watts. This ensures that food heats evenly and efficiently, reducing cooking time and energy consumption. The model's sleek design includes a spacious interior that can accommodate large dishes, making it suitable for family meals or batch cooking.

The 390.2521 comes equipped with a variety of cooking presets, allowing users to quickly select the appropriate settings for different types of food. These presets include options for popcorn, pizza, and beverages, among others. The intuitive control panel is designed for ease of use, featuring soft-touch buttons and a digital display that clearly indicates cooking times and power levels.

In terms of safety features, the Sears 390.2521 includes a child lock function to prevent accidental operation, making it a trustworthy option for families with young children. Additionally, the appliance is fitted with an automatic shut-off system, which activates at the end of the cooking cycle to prevent overheating and ensure safe use.

Technologically, the 390.2521 leverages the latest advancements in microwave technology. Its sleek interior design is easy to clean, thanks to a non-stick coating that resists food buildup. The turntable feature ensures even cooking by rotating food for optimal heat distribution, which is particularly beneficial when reheating or defrosting.

Another noteworthy characteristic of the Sears 390.2521 is its energy efficiency. The appliance is designed to minimize energy consumption, which is an essential consideration for environmentally conscious consumers. Its compact size also makes it easy to fit into various kitchen layouts, offering both functionality and aesthetic appeal.

In conclusion, the Sears 390.2521 microwave oven stands out in the competitive kitchen appliance market due to its combination of power, safety features, and user-centric design. Whether for quick heating, defrosting, or cooking, this model serves as a reliable and stylish option for any modern kitchen, making meal preparation faster and more convenient.