Siemens SIMOTICS XP 1MB5 SH400, Руководство по эксплуатации, Страница: 113 / 166

Servicing the external fan motor
● Perform an occasional visual inspection of the external fan motor and check it electrically
and mechanically every time the rolling bearings are replaced.
● Replace the permanently lubricated rolling bearing on the external fan motor after
40,000 operating hours or five years at the latest.
①
Maintenance opening for the separately driven fan motor
9.2.8 Assessing the rolling bearings
To assess the rolling bearings, it is generally not necessary to dismantle the machines. The
motor only has to be dismantled if the bearings are to be replaced.
The state of a rolling bearing can be assessed by analyzing the bearing vibration. The
measured values provide an indication and can be assessed by specialists. In this case, please
contact the Service Center.
9.2.9 Regreasing intervals and types of grease for operating rolling bearings
The specified grease data applies to the data specified on the rating plate and for high-quality
grease in accordance with the specifications in these operating instructions. Because these
greases exceed significantly the requirements according to DIN 51825 and ISO 6743‑9, they
permit the specified relubrication intervals.
Initial lubrication
The grease specified on the lubricant plate is selected according to the operating conditions
known at the time of ordering and should be used for initial lubrication.
Maintenance
9.2 Inspection and maintenance
1MB5 SH 400/450
Operating Instructions, 05/2019, A5E45959221A
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