Dear Members ,
Here I am informing to all I am facing problem in Air Fin Fan cooler at my working plant (Methanol Company ).
Problem : High vibration was observed at gearbox .
after replacing new gearbox I take motor solo run reading vibration was observed normal and during solo run no tripping and also more then 1 hour running no tripping.
After that inform connect coupling and confirm for test run .
Today I went for test run after 12 min of normal operation motor tripped .
1.Motor and gearbox Overall maximum vibration was 4.5 mm/sec .
2.The high vibration 4.5mm/sec was observed at motor vertical direction .
3.Motor and gearbox temperature found normal around 45 c
4.Motor Amps @ 70 another fin fan cooler running as a same AMPS .
Motor Running RPM 1140
Out put RPM 224
Motor Kw - 55
So any one suggest me the problem (motor or gearbox )and the cause of tripping .