janvanruth
Titanium
- Joined
- Oct 27, 2013
- Location
- netherlands Asten
yesterday the screw compressor had to be serviced and it was found the bearing of the cooling vent was shot.
the service tech just said there no longer were parts available and left.
the identical spare compressor was pressed into service but tripped the 30 amp automatic 3 phase fuse block as well as one 80 amp main fuse as soon as the compressor was powered up.
there are three main fuses each serving one phase.
it was possible to get it going if all other electrical devices were shut off before attempting to start up the compressor.
all other electrical devices in this case means some lighting, some computers but no major other electrical devices.
both compressors are identical and have a 11 Kw 380 volt motor.
the spare compressor turns readily by hand just like the other one.
the fact that only one main 80 amp fuse trips, makes me think there could be an internal short in one of the windings of the motor.
the 30 amp 3 phase automatic fuse cuts all three phases if only ones trips.
any ideas about things i could check before getting the motor out and having it checked?
the service tech just said there no longer were parts available and left.
the identical spare compressor was pressed into service but tripped the 30 amp automatic 3 phase fuse block as well as one 80 amp main fuse as soon as the compressor was powered up.
there are three main fuses each serving one phase.
it was possible to get it going if all other electrical devices were shut off before attempting to start up the compressor.
all other electrical devices in this case means some lighting, some computers but no major other electrical devices.
both compressors are identical and have a 11 Kw 380 volt motor.
the spare compressor turns readily by hand just like the other one.
the fact that only one main 80 amp fuse trips, makes me think there could be an internal short in one of the windings of the motor.
the 30 amp 3 phase automatic fuse cuts all three phases if only ones trips.
any ideas about things i could check before getting the motor out and having it checked?