Goulds Pumps VS - IOM - Manual (Page 20)

12
SECTION 8 – TROUBLE SHOOTING CHART
In case of difficulties, refer to the chart to locate basic problems with the system. Once the problem is
located, refer to specific sections in this manual for details.
PROBABLE CAUSE
1 Motor overload protector trip
a. Incorrect control box.
b. Incorrect connections.
c. Faulty overload protector.
d. Low voltage.
e. Ambient temperature of control
box or starter too low.
f. Pump bound by foreign matter.
2. Blown fuse, broken or loose electric
connections.
3. Motor control box or starter not in
proper position.
4. Cable insulation damaged.
5. Splice may be open or grounded.
6. Faulty pressure switch.
7. Faulty liquid level control.
1. Line check valve backward.
2. Pump is air-bound.
3. Lift too high for the pump..
4. Suction screen or impeller plugged, or
pump in mud or sand.
5. Pump not submerged.
6. Well may contain excessive amounts
of air or gas.
7. Three-phase unit running backwards.
1. Lift too high for the pump.
2. Screen or impellers partly plugged.
3. Scaled or corroded discharge pipe or
leaks anywhere in system.
4. Well may contain excessive amounts of
air or gas.
5. Excess wear due to abrasives
6. Three-phase pump running backward.
1. Incorrect set.
2. Switch opening plugged.
3. Leaks anywhere in system.
4. Three-phase unit running backward.
1. Water-logged tank.
2. Check valve leaking.
3. Pressure switch out of adjustment.
4. Leaks in service line.
REMEDY
1. Allow motor to cool, overload will
automatically reset. Investigate cause
of overload.
a – e Have a qualified electrician inspect
and repair, as required
f. Pull the pump, examine and clean.
Adjust set depth as required.
2. Check fuses, relays or heater elements
for correct size capacitor and all
electrical connections.
3. Make sure box is in upright position.
4. Locate and repair as per instructions.
5. Check resistance between cable leads
with ohmmeter. If open or grounded, pull
pump and re-splice.
6. Repair or replace.
7. Check relay, wires and electrodes.
1. Reverse check valve.
2. Successively start and stop pump until
water flows normally.
3. Review performance requirement.
4. Pull the pump and clean, check well
depth. Raise setting if necessary.
5. Check water level. Lower pump if
permissible.
6. Start and stop pump several times. If
this does not remedy conditions, pump
may not be able to co-operate because
of too much gas in the well.
7. Reverse rotation.
1. Check rating.
2. Pull pump and clean.
3. Replace pipe and repair leaks.
4. Start and stop pump several times. If
this does not remedy conditions, pump
may not be able to co-operate because
of too much gas in the well.
5. Replace worn parts.
6. Reverse rotation.
1. Change settings.
2. Clean opening or install new switch.
3. Repair leaks.
4. Reverse rotation.
1. Check tank for leaks (plug at top of tank
may be leaking air).
b. Be sure drain and ‘Y’ fittings are
functioning properly. Check operation of
snifter valve.
2. Replace check valve.
3. Readjust to correct setting or replace.
4. Locate and correct.
CONDITION
PUMP WILL NOT RUN
PUMP RUNS BUT
NO WATER
DELIVERED
REDUCED
CAPACITY OR
INSUFFICIENT
TANK PRESSURE
PRESSURE SWITCH
DOES NOT CUT OUT
PUMP STARTS TOO
FREQUENTLY