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Maintenance
9.2 Inspection and maintenance
Damage from foreign bodies in the machine
Foreign bodies such as dirt, tools or loose components can be left by accident inside the
machine after maintenance is performed. These can cause short circuits, reduce the
performance of the cooling system or increase noise in operation. They can also damage the
motor.
● Ensure that no foreign bodies are left in or on the motor.
● Securely attach all loose parts once you have completed the work.
● Carefully remove any dirt.
9.2.2
Inspections in the event of faults
Natural disasters or unusual operating conditions, such as overloading or short circuit, are
faults that overload the machine electrically or mechanically.
Immediately perform an inspection after such faults.
Note
Inspection specifications
• Carefully comply with the relubrication intervals for rolling bearings that deviate from the
inspection intervals.
• When servicing a three-phase machine, it is generally not necessary to dismantle it. The
machine only has to be dismantled if the bearings are to be replaced.
9.2.3
First inspection after installation or repair
Perform the following checks after approximately 500 operating hours or at the latest six
months after commissioning:
Table 9- 1
Check
The electrical parameters are maintained.
The permissible bearing and winding temperatures are not exceeded.
The smooth running characteristics and machine running noise have not
deteriorated.
The foundation has no cracks or indentations. (*)
(*) You can perform these checks while the motor is running or at a standstill.
112
Checks after assembly or repair
When the
motor is
running
X
X
X
X
1MB..1/2/3/4 - shaft heights 63 ... 355
Operating Instructions, 06/2020, A5E44455710A
At standstill
X
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