Soga PMG 112, Use And Maintenance Manual

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5.3 Troubleshooting
PROBLEM CAUSES WHAT TO DO
The voltage at no load is
too high/low 1) The speed is too high/low
2) Temperature too low/high.
1) Check speed/frequency.
2) Check if the ambient temperature is inside the
range specifi ed in the nameplate.
The generator voltage at
no load is correct but too
low when connecting the
load (stand-alone mode). 1) Possible overload.
2) Power factor <1. 1) Make sure the generated current is not higher
than the rated one and possibly reduce the load.
Check the inverter parameters set-up.
The generator voltage is
unstable. 1) Poor contacts.
2) Unstable generator speed.
3) Unstable load/inverter. 1) Check contacts.
2) Check if the speed is constant. Regulate the
speed of the generator acting on the prime mover.
3) Check the load/inverter.
The temperature rise in
the winding is too high. 1) Possible overload.
2) Poor cooling
1) Make sure the generated current is not higher
than the rated one and possibly reduce the load.
Check the inverter parameters set-up.
2) Check the cooling system.
Machine noisy. 1) Over loaded bearings.
2) Faulty coupling.
3) The generator is
working above its rated
performances.
4) Wrong parameters set in
the inverter. 1) Check axial and radial loads.
2) Check and fi x the coupling.
3) Reduce the load.
4) Check and change the inverter parameters.
Tab. 5.2
6 DISMANTLING
Most of generator parts are made of steel, cast iron
and copper. All materials should be eliminated in com-
pliance with the local dispositions. When dismantling
the generator pay attention to the permanent magnet
in the rotor. To aid recovery of the material, it is best to
classify it by type (I.e. steel, copper, aluminium, plastic,
etc.). When dismantling the machine, contact an au-
thorised scrap dealer and ensure that no parts of the
generator are dumped in the environment.
DANGER!
The disassembly of the generator
must NOT be carried out by people
with pacemakers or any other im-
planted medical electronic device.