Grain Systems Bucket Elevtors, Conveyors, Series II Sweeps PNEG-720-G2 - Manual (Page 68)

9. Maintenance
68 PNEG-720-G2 12" and 16" Series II Sweep
Lubrication
A. Lubrication – Electric Motors
Electric motors supplied for use on Series II Sweeps are properly lubricated at the time of manufacture.
It is not necessary to lubricate them at the time of installation unless the motor has been in storage for
one year or longer. Some motors may be factory lubricated and sealed for the life of the bearings.
Overgreasing the bearings can cause premature failure of the motor. The amount of grease added must
be carefully controlled.
B. Procedure for Lubrication of Electric Motors
1. Stop motor. Disconnect and lock out of service.
2. Follow all safe bin entry procedures and wear all required personal protective equipment.
3. Remove contaminants from grease inlet area.
4. Remove filler and drain plugs.
5. Check filler and drain holes for blockage and clean as necessary.
6. Add proper type and amount of grease. See Chart on Page 69 for amount of lubricant. Too
much grease or injecting grease too quickly can cause premature bearing failure. Use
approximately one minute to slowly inject the recommended amount of grease.
7. Wipe off excess grease and replace filler and drain plugs. Do not run motor without the grease
and drain plugs installed.
NOTE: It is very important to keep the grease clean. Mixing dissimilar grease is not recommended.
C. Type of Lubrication
A polyurea mineral oil NGLI grade 2 type grease is to be used for lubrication of the electric motors.
Grease meeting this specification include:
1.) Chevron SRI #2
2.) Exxon-Mobile Polyrex EM
3.) Texaco Polystar RB