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Table 7-1
Measures
Initial inspection
Continuous lubrication
(Machines without regreasing
device )
Machines with regreasing
device (option)
Clean
General inspection
[ID: 356]
7.1.3
Maintenance of the external fan
Procedure
● Check the external fan VDI 2056 annually for mechanical vibrations. The maximum
● Regularly clean and inspect the fan. Impeller and frame are subject to natural wear
● Refer to the maintenance and service information provided by the manufacturer of the
7.1.4
Bearings
Description
The three-phase motors have grease-lubricated, rolling-contact bearings. A regreasing
device is optional.
A deep-groove ball bearing is installed at the NDE as a locating bearing. Depending on the
type of load, a deep-groove ball bearing or cylindrical-roller bearing is installed at the DE as
a floating bearing.
A5E00264365A
Siemens AG Operating Instructions 2.02 1PL622
Operating period intervals
permissible vibrational severity is 2.8 mm/s measured on the end shield of the impeller-
side motor bearing.
depending on the area of application and displacement medium.
WARNING
Impeller can crack
Due to deposits and the resulting imbalance there is a hazard of fatigue fracture of the
impeller. The impeller can crack in operation. Death, serious injury, or material damage
can result.
Regularly clean and inspect the fan.
external fan.
Operating period intervals
After 500 operating hours
Belt operation 12 000 h
Coupling operation 20 000 h
(see lubrication instruction plate)
depending on local degree of
pollution
Approximately every 16000
operating hours
Maintenance
7.1 Maintenance
Intervals
after 6 months at the latest
After 2 years at the latest
55
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