Check Rotation (Open-Dr ive Motor)

Open Drive Motor Initial Start-Up

Initial Uncoupled Start-Up
The initial start-up of the m ot or should be made with the mot or uncoupled. Verify tha t oil has
been added to each beari ng ho using to the correct lev el .
1. If the motor is equipped with unidirectiona l fans (refer to the certi fi ed drawing) and
verification of rotat ion direction is req uired, the following procedure should be follo wed:
a. Start the motor and obse r v e th e rotation directio n.
b. Allow the motor to achie v e fu ll speed before disco nne cting it from the powe r so ur c e.
c. If the rotation directio n must be changed, refer t o the Before Initial Sta rt-Up, Open Drive
Motor Electrical Con nec t ion section. Otherwi se, the motor can be rest ar t ed immediately
after it has coasted to a sto p.
2. Following the init ial start-up, the bearin g temperatures shou ld be closely monitored. O n
sleeve bearings, the free rotation of the oil ri ngs s ho uld be verified by obse rving them
through the viewin g port in the top of the housin g. The rate of ri se in bearing te mperature is
more indicative of im pe nding trouble than the actual temperature. If th e r at e of rise in
temperature is exce s s iv e or if the motor exhibits ex c es s iv e vibration or noise, it sho uld be
shut down immediate ly and a thorough investigat ion made as to the cause bef ore it is
operated again.