DC motor - Siemens, s.r.o.

Maintenance
see also
check, while the motor is at standstill, that:
•= the motor foundation has no indentations or cracks.
•= the carbon brushes and the commutator are in perfect condition and the
commutator contact surfaces have a uniform skin.
•= the brush holders are correctly aligned and secured.
•= the carbon brushes in the brush boxes and the brush pressure fingers in the
links move easily and the spring action of all carbon brushes is even.
•= the remaining brush height is still sufficient to ensure uninterrupted operation up
until the next inspection. Make sure the height does not drop below the
minimum brush height.
Any defects detected in the course of the inspection must be corrected
immediately.
Note
The range of servicing measures to be performed may increase depending on the
plant specification and operating conditions.
[ID 579]
6.2.2 Main service
Service intervals
Inspection checklist [→ Page 9-3]
A main service must be performed on the motor after every approximately 16,000
operating hours or at the latest after 2 years of operation.
Action to be performed
Danger
If no inspection windows are fitted and therefore the respective covers need to be
removed in order to observe the commutation behavior, this must always be done
by specially qualified expert personnel in order to reliably ensure that no live or
moving parts are touched.
Protective goggles must be worn.
With the motor running, check that:
•= the specified technical data is complied with (such as power consumption,
temperature of the windings, bearings, coolant, etc.).
SIEMENS AG T61160347010001 (DMHO V9)
6-10 Operating instructions 1GG6286-0NA4.-1VV1-Z