Edition: 11/2007
Technical Instructions
Commissioning and Maintenance Guide
TAM 00 526
Page
13
/ 18
4 Corrective
Maintenance
Important!
Before starting maintenance work, disconnect the machine from the mains. Retighten as specified all
connections, e.g. screws, that were loosened during maintenance work.
If guards or safety devices are removed during repair or maintenance work, disable the machine. Re-
place the safety equipment immediately after completion of repair or maintenance work.
Each time you carry out maintenance, clean the entire internal space of the motor and blow out all the
dust. After this, check the insulation resistance of the electrical conductors to earth. According to of EN
60024-1, page 55, this must not be less than
1 M
Ω
.
After any and all operator activity involving the machine, whether it be on the motor, the tachometer,
the fan, the brake or the power converter, the owner must carry out acceptance testing and document
it chronologically in the machine log (maintenance book, etc.) by entering the
name of the person/the
firm carrying out acceptance testing, the date of testing, signature and report number etc
.
If this is not carried out, the owner may be faced with consequences relating to liability legislation.
For safety reasons, unauthorized additions or modifications to the drive are not allowed.
4.1 Brush-Holders, Carbon Brushes and Commutator of the Main Motor
Brush-holders and carbon brushes
Check all the brush holders and carbon brushes every 600 operating hours, or depending on the
amount of wear, for wear, brush pressure, commutator brush mobility in the holder and firmness of
contact between the brush and the brush shunt. You must change the carbon brush before the brush
shunt damages the collector. The carbon brushes either have wear marks or you use the bottom edge
of the stamp as a wear limit. The carbon brush must not wear down below the mark.
Use only genuine replacement carbon brushes!
Reorders for replacement carbon brushes can only be accepted if you quote the motor's fabrication
number.
