Sears 390.2508 - Manual (Page 11)

TROUBLESHOOTING CHART
SYMPTOM POSSIBLE CAUSECS} CORHECnVE 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,
disconnected, or wired incorrectly
4. Refer to instructions on wiring. Check and tighten all wiring.
5. Pressure switch contacts are dirty 5. Clean by sliding pieces of plain paper between contacts
Motor runs hot and 1. Motor is wired incorrectly 1. Refer to mstructions 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
water is delivered 1. Pump in new installation did
not pick up prime through:
a. Improper priming
b. Air leaks
c. Leaking foot valve
1, In new installation;
a. Re-prime according to instructions
b. Check all connections on suction line, air volume control, and jet
c. Replace foot valve
2. Pump has lost prime through;
a. Air leaks
b. Water level below suction
of pump
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 Uft, 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
in closed position
4, Replace check valve or foot valve
5. Pipes are frozen 5. Thaw pipes. Bury pipes below frost line. Heat pit or pump house.
6. Foot valve and/or strainer are
buried in sand or mud
6. Raise foot valve and/or strainer above weU bottom
Pump does not
deliver water to full 1. Water level in weU is lower than
estimated
1. A deep weU jet pump may be needed (over 20 ft. to water)
capacity (Also
check point 3
2. Steel pipir^ (if used) is corroded or
limed, causing excess friction
2. Replace with plastic pipe where possible, otherwise with new steel pipe
immediately above)
3. Offset piping is too small in size 3. Use larger offset piping
Pump pumps water
but does not shut 1, Pressure switch is out of adjustment
or contacts are “frozen”
1. Adjust or replace pressure switch
off
2. Faucets have been left open 2. Close feucets
3. Jet or impeller is clogged 3. Clean jet or impeUer
4. Water level in well is lower than
estimated
4. Check possibility of using a deep weU jet pump
5. Motor is wired incorrectly 5. Refer to instructions on wiring
Pump cycles too
frequently 1. Standard pressure tank is water­
logged and has no air cushion
1. Drain tank to air volume control tapping. Check air volume control for
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
Captive Air® Tank
6 . Disconnect electrical power and Open faucets untU aU pressure is
reUeved. Using automobUe tire pressure gai^e, 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 imtil proper air pressure is reached. Check
air valve for leaks, using soapy solution, and replace core if necessary.
Air spurts from 1. Pump is picking up prime 1. As soon as pump picks up prime, aU air wUl be ejected
faucets ^
> 2. Leak in suction side of pump 2. Check suction piping
3. Well is gaseous 3. Change installation as described in manual
4 . Intermittent over-pumping of well 4, Lower foot valve if possible, otherwise restrict discharge side of pump
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