28
TROUBLE SHOOTING - EcoTRAN
CAUTION !
Always disconnect the pump from the electrical power source before handling.
If the system fails to operate properly, carefully read instructions and perform maintenance recommendations.
If operating problems persist, the following chart may be of assistance in identifying and correcting them:
MATCH “CAUSE” NUMBER WITH CORRELATING “CORRECTION” NUMBER
.
PROBLEM
CAUSE
CORRECTION
Pump will not run
1. Poor electrical connection, blown fuse,
tripped breaker or other interruption of
power, improper power supply.
2. Motor inoperative
3. Level control inoperative.
4. Insuffi cient liquid level.
1. Check all electrical connections for
security. Have electrician measure
current in motor leads, if current is within
±20% of locked rotor Amps, impeller is
probably locked. If current is 0, overload
may be tripped. Remove power, allow
pump to cool, then recheck current.
2. Check winding insulation (Megger Test)
and winding resistance. If check is
outside of range, dry and recheck, If still
defective, replace per service instructions.
3. Remove Level control and orient it
horizontally. If the pump still does not
operate, after rechecking all electrical
connections replace the level control.
4. Make sure liquid level is at least equal to
suggested turn-on point.
5. Recheck all sizing calculations to
determine pump type.
6. Check discharge line for restrictions,
including ice if line passes through or is
into cold areas.
7. Remove and examine check valve
for freedom of operation.
8. Open valve.
9. Check impeller for freedom of operation
security and condition. Clean impeller
cavity and inlet of any obstruction.
10. Check and clean anti-siphon.
11. Repair fi xtures as required to
eliminate leakage.
12. Check for leaks.
13. Check pump and level control
temperature limits and fl uid temperature.
Pump will not turn off
2. Motor inoperative
3. Level control inoperative.
5. Excessive infl ow or pump not properly sized
for application.
10. Pump may be airlocked.
Pump hums but does not run
1. Incorrect voltage
9. Impeller jammed or loose on shaft, worn or
damaged, impeller cavity or inlet plugged.
Pump delivers insuffi cient capacity
1. Incorrect voltage.
5. Excessive infl ow or pump not properly sized
for application.
6. Discharge restricted.
7. Check valve stuck closed
8. Shut-off valve closed.
9. Impeller jammed or loose on shaft, worn or
damaged, impeller cavity or inlet plugged.
10. Pump may be airlocked.
Pump cycles too frequently or runs
periodically when fi xtures are not in use
7. Check valve stuck closed
11. Fixtures are leaking.
12. Ground water entering basin.
Pump shuts off and turns on indepen-
dent of switch, (trips thermal overload
protector).
CAUTION!
Pump may start
unexpectedly. Disconnect power supply.
1. Incorrect voltage.
5. Excessive infl ow or pump not properly sized
for application.
9. Impeller jammed, loose on shaft, worn or
damaged, impeller cavity or inlet plugged.
13. Excessive water temperature.
Pump operates noisily or vibrates
excessively
2. Worn bearings or bent shaft
8. Debris in impeller cavity or broken impeller
