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Trouble shooting:
Make sure the mains are switched off
during inspection.
Make sure the pump will not start
unexpectedly.
Observe the local regulations for installation,
maintenance and repair!
Problem:
Possible cause:
Pomp does not start
No voltage on the terminals
Wrong pump cable connection
Blockage impeller
Pump does not stop
No stop signal
Wrong start / stop signal
Pump start and stops
Fault in power supply
repeatedly
Level control system not stable
Motor overload
Motor current too high
Supply failure
Pump failure
No flow or too low
Jamming or airlock in discharge pipeline
pump capacity
Pump failure
Fault in power supply
High level alarm
Pump failure
Supply failure
If the pump still fails please contact:
Landustrie version 07-14 | operation & maintenance manual DTP series
Subject to modifications
Only trained and authorized people may
install and maintain the pump.
Don't go near to rotating parts of the pump
Required action:
Check power supply
Check motor protection
Check start- and stop signals
Measure cable wires
Check pump and/or impeller
Check level switches
Check level switches
Check power supply
Check level switches
Check motor protection
Check power supply
Check pump
Check discharge pipeline
Check pump
Check power supply
Check pump
Check power supply
Checkpoints:
* main switch
* installation switches
* all auxiliary switches
* voltage relay
* earth leakage relay
* the auxiliary switches
* motor protection relay
* water in oil relais
* too low level
* obstructed level switches
* engaged emergency stop
* general electrical error
* check motor phases
* impeller or pump jamming
* level switches
* general electrical error
* installation switches
* level switches
* settings level switches
* main switch
* installation switches
* switch thermal protection
* installation switches
* level switches
* settings level switches
* wrong direction of rotation
* impeller blockage
* motor protection relay
* voltage monitoring relay
* impeller blockage
* medium specific gravity too high
* wrong direction of rotation
* blockage in discharge
* valves half open or closed
* pump draws air
* impeller blockage
* impeller loose or damage
* main switch
* installation switches
* switch thermal protection
* impeller blockage
* impeller loose or damage
* pump draws air
* damaged bearings
* switch thermal protection
* fuses
* level switches
* settings level switches
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