Sears 390.2508 owner manual Troubleshooting Chart, Corrective

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

false

3.

Starting

switch

is defective

3.

Replace

sta_ing

switch

4.

Wires

at motor

are

loose,

4.

Refer

to

instructions

on

wiring.

Check

and

tighten

all wiring.

disconnected,

or

wired

incorrectly

5.

Pressure

switch

contacts

are

dirty

5.

Cleanbyslidingpiecesofplainpaperbctweencontacts

Motor

runs

hot

and

1.

Motor

is

wired

incorrectly

1.

Refer

to instructions

on

wiring

overload

kicks

off

2.

Voltage

is too

low

2.

Check

with

power

company.

Install

heavier

wiring if wire

size is too small. See wiring instructions

3.

Pump

cycles

too

frequently

3.

See

section

below

on

too

frequent

cycling

Motor

runs

but

no

I.

Pump

in

new

installation

did

1,

In new

instalJation:

water

is delivered

not

pick

up

prime

through:

a,

Improper

prinling

a.

Re-prime according

to

instructions

b.

Air

leaks

b.

Check

all connections

on

suction

line,

air

volume

control,

and

jet

c.

Leaking

foot

valve

c.

Replace

foot

valve

2.

Pump

has lost

prime

through:

2.

In installation

already

in use:

a.

Air

leaks

a.

Check

all connections

on

suction

line,

air

volume

control,

jet

and

shaft

seal

b.

Water level below suction

b.

Lower

suction

line intu

water

and

re-prime.

If

recedirtg

water level

of pump

in

well

exceeds

suction

lift,

a deep

well

pump

is needed

3.

Jet

or

impeller

is plugged

3,

Clean

jet

or

impeller

according

to

instructions

•

4.

Check

valve

or

foot

valve

is stuck

4.

Replace

check

valve

or

foot

valve

in

cinsed

position

5.

Pipes

are

frozen

5.

Thaw

pipes.

Bury

pipes

below

frost

line.

Heat

pit

or pump

house.

6.

Foot

valve

and/or

strainer

are

6.

Raise

foot

valve

and/or

strainer

above

well

bottom

buried in sand or mud

Pump

does

not

1.

Water

level

in

well

is lower

than

1.

A deep

weIl

jet pump

may

be

needed

(over

20

ft. to

water)

deliver

water

to full

estimated

capacity

(Also

2.

Steel

piping

(if

used)

is

corroded or

2.

Replace

with

plastic

pipe

where

possible,

otherwise

with

new

steel pipe

check

point

3

limed,

causing

excess

friction

immediately

above)

3,

Offset

piping

is

too

small

in

size

3.

Use

larger

offset

piping

Pump

pumps water

I,

Pressure

switch

is

out

of adjustment

1.

Adjust

or

replace

pressure

switch

but does

not

shut

or contacts

are

"frozen"

off

2.

Faucets

have

been

left

open

2.

Close

faucets

3.

Jet

or

impeller

is clogged

3.

Clean

jet

or impeller

4.

Water

level

in

well

is

lower

than

4.

Check

possibility

of using

a deep

well

jet

pump

estimated

5.

Motor

is wired

incorrectly

5.

Refer

to

instructions

on

wiring

Pump

cycles too

1.

Standard

pressure

tank

is water-

1.

Drain

tank to

air volume

control

tapping.

Check

air

volume control

for

frequently

logged

and has no air cushion

defects.

Check

for

air leaks

at any

connection

2.

Pipe

leak

2.

Check

connections

3.

Faucets

or

valves

are

open

3.

Close

faucets

or valves

4.

Foot

valve

leaks

4.

Replace

foot

valve

5.

Pressure

switch

is out

of adjustment

5.

Replace

pressure

switch

6.

Air

charge

too

low

in

6.

Disconnect

electrical

power

and

open faucets

until

all pressure

is

Captive

Air* Tank

relieved.

Using

automobile

tire

pressure

gauge,

check air

pressure

in tank

at the valve stem located at top of tank. If air pressure is lower, pump air

into tank from outside source undi proper air pressure is reached. Check

air

valve

for

leaks,

oKmg soapy

solution,

and

replace core If necessary.

Air spurts

from

1.

Pump

is picking

up

prime

1.

As soon

as pump

picks

up

prime,

all air

will

be ejected

faucets

3

o2.

Leak

in

suction

side

of pump

2.

Check

suction

piping

3.

Well

is

gaseous

3.

Change

installation

as described

in

manual

4.

lr_termlttent over-pumping

of well

4.

Lower

foot

valve

if possible,

otherwise

restrict

discharge

side

of pump

11