Maintenance
9.4 Maintenance
Smoke extraction motors
74
Operating Instructions, 03/2016, 5 610 80000 40 018
9.4.2
Re-greasing
For machines with regreasing system, relubrication intervals, grease quantity and grease
grade are provided on the lubricant plate. Additional data can be taken from the main
machine rating plate.
Grade of grease for standard motors (IP55) UNIREX N3 - ESSO.
Note
It is not permissible to mix different types of grease.
Prolonged storage periods reduce the useful lifetime of the bearing grease. Check the
condition of the grease if the equipment has been in storage for more than 12 months. If the
grease is found to have lost oil content or to be contaminated, the machine must be
immediately relubricated before commissioning. For information on permanently-greased
bearings, please refer to the section titled Storage (Page 76).
Procedure
To relubricate the roller bearings, proceed as follows:
1.
Clean the grease nipples at the drive end and non-drive end.
2.
Press-in the specified grease and amount of grease according to the data stamped on the
lubrication plate.
–
Please observe the information on the rating and lubricant plates.
–
Regreasing should be carried out when the motor is running (max. 3600 rpm).
The bearing temperature can rise significantly at first, and then drops to the normal value
again when the excess grease is displaced out of the bearing.
NOTICE
This invalidates the warranty and operational safety
Mixing different types of grease can lead to material damage on the machine.
If you use or mix types of grease other than UNIREX N3, this invalidates the warranty and
standard conformity with the EN 12101-3 test standard.
Only use UNIREX N3 for re-lubrication purposes.
9.4.3
Cleaning
Cleaning the grease ducts and spent grease chambers
The spent grease collects outside each bearing in the spent grease chamber of the outer
bearing cap. When replacing bearings, remove the spent grease.
Note
Dismantle the bearing cartridges to replace the grease in the lubrication duct.
