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10.
TROUBLE SHOOTING:
When working on the motor, make sure
that the power is switched off.
When working on the pump
make sure it cannot start unexpectedly!
Observe the general safety instructions for opreation and maintenance
and observe the local electrical and safety regulations!
Problem:
Possible cause:
Pump does not start
No voltage on motor terminals
Motor failure
Impeller blocked
Pump does not stop
No stop signal
Wrong start and stop level
Pump starts and stops
Fault in power supply
repeated
Fault in level regulation
Motor overloaded
Current too high
Fault in power supply
Pump failure
Pump runs but no flow
Clogging or air lock
or too low flow
Pump failure
Fault in power supply
Too low capacity
High level alarm
Pump failure
Fault in power supply
Motor failure
If the pump stil does not start, consult Technical expert:
Landustrie version 06-14 | Operation & Maintenance manual BTP-SERIES
Subject to modifications
Only qualified electricians may do the
electrical work.
When starting the pump ensure nobody
goes near rotating parts.
Required action:
Checkpoints:
Check power supply
* Main power
* Main isolator switch
* Fuses
* Main power protection relay
Check motor protection
* Earth leakage relay
* Motor protection relay
* Motor temperature
* Water in oil detector
Check starts-and stop signals
* Too low waste water level
* Obstructed level switches
* Switches interchanged
* Control panel
Check motor wiring
* Phase resistance
Check pump or impeller
* Impeller or volute blocked
* Worn or broken impeller
Check level regulation
* Float switches
* Control panel
Check level regulation
* Obstructed level switches
* Adjust start and stop level
* Power supply not stable
Check power supply
* Low voltage
* Not all 3 phases available
* Setting of motor protection
Check level regulation
* Control panel
* Float switches
* Obstructed level switches
Check cooling motor/pump
* Wrong direction of rotation
* Impeller or volute blocked
* Protection in automatic reset mode
Check power supply
* Low voltage
Check pump or impeller
* Impeller or volute blocked
* Viscosity or spec. gravity too high
Check discharge
* Discharge obstructed
* Valve fully or partly closed
* Air pocket in pump or discharge
Check pump
* Impeller or volute blocked
* Pump is sucking too much air
* Worn or broken impeller
Check power supply
* Control panel
* Fuses
* Low voltage
Check discharge
* Discharge obstructed
* Valve fully or partly closed
* Air pocket in pump or discharge
Check pump
* Impeller or volute blocked
* Pump is sucking too much air
* Worn or broken impeller
* Worn or broken bearings
Check power supply
* Fuses
* Control panel
Check motor
* Continuity and isolation
* = If Applicable
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