Craftsman 390.2511 Owner's Manual download pdf (Page 14)

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 fuse

3. Starting switch is defective 3. Replace starting switch

4. Wires at motor are loose, 4. Refer to instructions on wiring. Check and tighten alJ wiring.

disconnected, or wired incorrectly

Pressure switch contacts are dirty 5. Clean by sliding pieces of plain paper between contacts

Motor is wired incorrectly 1. Refer to instructions on wiring

Voltage is too low 2. Check with power company. Instail heavier wiring if wire

size is too small. See wiring instructions

Pump cycles too frequently 3. See section below on too frequent cycling

1. In new installation:

Motor runs hot and 1.

overload kicks off 2.

Motor runs but no 1.

water is delivered

Pump does not 1.

deliver water to full

capacity (Also 2.

check point 3

immediately above) 3.

Pump pumps water 1.

but does not shut

off 2.

Pump cycles too 1.

frequently

Air spurts from 1.

faucets 2.

Pump in new installation did

not pick up prime through:

a. Improper priming

b. Air leaks

c. Leaking foot valve

Pump has lost prime through:

a. Air leaks

b. Water level below suction

of pump

Jet or impeller is plugged

Check valve or foot valve is stuck

in dosed position

Pipes are frozen

Foot valve and/or strainer are

buried in sand or mud

Water level in well is lower than

estimated

Steel piping (ff used) is corroded or

limed, causing excess friction

Offset piping is too small in size

Pressure switch is out of adjustmoat

or contacts are "froz_rl"

Faucets have been left open

Jet or impeller is clogged

Water level in well is lower than

estimated

Motor is wired incorrectly

Standard pressure tank is water-

logged and has no air cushion

Pipe leak

Faucets or valves are open

Foot valve leaks

Pressure switch is out of adjustment

Air charge too low in

Captive Air* Tank

Model 390.2511 requires 30

pounds for proper operation

a. Re-prime according to instructions

b. Check all connections on suction line, air volume control, and jet

c. Replace foot valve

2. In installation already in use:

a. Check all connections on suction line, air volume control,

jet and shaft seal

b. Lower suction line into water and re-prime. If receding water level

in well exceeds suction ii_, 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. Check possibliity of using a deep weg jet pump

Pump is picking up prime 1.

Leak in suction side of pump 2.

Well is gaseous 3.

Intermittent over-pumping of well 4.

Continued on Page 15

Refer to instructions on wiring

Drain tank to air volume control tapping. Check air volume control for

defects. Check for air leaks at any connection

Check connections

Close faucets or valves

Replace foot valve

Replace pressure switch

Disconnect electrical power and open faucets until ali pressure is

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 until proper air pressure is reached. Check

air valve for leaks, using soapy solution, and replace core if necessary.

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

Check suction piping

Change installation as described in manual

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

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Craftsman 390.2511 Owner's Manual Page 14

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