
PFT Conveying Pump SWING L Overview – Operation – Spare Parts Lists
Work on troubleshooting
40
14/09/2021
38.5 Table of malfunctions
Malfunction
Possible cause
Solution
Solution made by
Machine does
not start:
Electricity
Main switch not activated
Turn on the main switch
Operator
Power supply is defective
Repair the power supply
Service technician
Earth leakage circuit breaker
triggered
Reset the earth leakage circuit
breaker
Service technician
Blind plug missing
Insert the blind plug
Operator
Microfuse is faulty
Replace the microfuse
Service technician
Limit switch dirty or faulty
Clean or replace the limit switch
Service
technician/
operator
Fuse is defective
Replace the fuse
Service technician
Machine does
not start:
Material
Too much dry material in hopper,
possibly resulting in tunnel
formation
Important:
Main switch
OFF
–
Detach main power cable. Clean
the material hopper. Restart
machine.
Operator
Hardened material is blocking the
pump unit (rotor/stator)
Important:
Main switch
OFF
–
Detach main power cable.
Dismantle the pump, clean it and
then reinstall it.
Operator
Material in pump component too
dry
Important:
Main switch
OFF
–
Detach main power cable. Clean
the material hopper.
Operator
Program does
not start
Microfuse on transformer is faulty Replace the microfuse
Service technician
Pump does not
start
Pump motor defective
Replace the pump motor
Service technician
Pump does not
start
Defective connection cable
Replace the connection cable
Service technician
Rotor worn or faulty
Replace the rotor
Service technician
Stator worn or clamped too
loosely
Tighten the clamp or replace the
stator
Service technician
Part not original PFT spare part
Use only original PFT spare parts
Service technician
Red control
lamp lights up
to show fault
Overload from the pump stalling
due to dry material
Run the machine in reverse
Operator