auxillary lube oil pump not started!!!
auxillary lube oil pump not started!!!
(OP)
hi all
just before 2 days our booster compressor (2stages reciprocating compressor from neuman&Esser)was shutdown du to low low lube oil pressure signal,when we check, we found that auxillary oil pump has autostarted when lube oil pressure was low only but it run for 1 second only then stopped which trigger the low low lube oil pressure signal and shutdown the compressor. After that we tested the compressor again and the start sequance interupted because main oil pump can't maintain the desired lube oil pressure, we dismantle the main pump and found its link with the cranck shaft was damaged. My question why the auxillary pump run only for 1 sec then stop? has anyone see a cause like this?
just before 2 days our booster compressor (2stages reciprocating compressor from neuman&Esser)was shutdown du to low low lube oil pressure signal,when we check, we found that auxillary oil pump has autostarted when lube oil pressure was low only but it run for 1 second only then stopped which trigger the low low lube oil pressure signal and shutdown the compressor. After that we tested the compressor again and the start sequance interupted because main oil pump can't maintain the desired lube oil pressure, we dismantle the main pump and found its link with the cranck shaft was damaged. My question why the auxillary pump run only for 1 sec then stop? has anyone see a cause like this?





RE: auxillary lube oil pump not started!!!
If this is not the problem, then I would wonder if the motor driver on the aux pump is properly sized. Starting up on cold oil (I work in Minnesota) can overload the driver and cause it to trip off. But, if the motor tripped on overload, this should have been obvious since they would have had to reset the breaker to restart.
Johnny Pellin
RE: auxillary lube oil pump not started!!!
we have local hand-off-auto swith near the aux pump which was in auto mode, is it the same as the auto-start switch that can be set up as latching or not latching or you mean something else? thanks again
RE: auxillary lube oil pump not started!!!
Johnny Pellin
RE: auxillary lube oil pump not started!!!