DC motor - Siemens, s.r.o.

Relubrication
Maintenance
These greases have Lithium soap as thickening agent and mineral oil as the basic
oil. They exceed the standard requirements of DIN 51825.
When using other K3K or K3N greases, which in some cases only fulfill the
minimum requirements in accordance with DIN 51825, regreasing intervals must
be halved. K3N greases have higher temperature reserves than K3K greases.
Caution
Greases with different thickening agents and basic oils must not be mixed.
Special types of grease are used on motors intended for operational temperatures
below –20 °C. These are specified on the lubrication instruction plate. No other
grease types are permitted.
For relubrication, clean the grease nipples, then press in the quantity and type of
grease according to the lubrication instruction plate. The shaft must rotate so that
the new grease can be distributed throughout the bearing. The bearing
temperature rises sharply at first, then drops to the normal value again when the
excess grease is displaced out of the bearing. The consumed grease is collected
outside the bearing. To remove the used grease, detach the outer bearing cover.
The used grease compartment is suitable for holding the grease from approx. 10
relubrication processes with the prescribed quantity of grease according to the
lubrication instruction plate.
Warning
Whenever you work on the locating bearing when the three-phase motor is in its
vertical position, support/unload the rotor.
[ID 570]
6.1.4 Cleaning
Cleaning the cooling-air passages
The cooling-air passages through which ambient air flows must be cleaned at
regular intervals. The cleaning intervals depend on the degree of contamination. In
addition, the internal cooling-air passages (where accessible) and the insulating
parts of the commutator and the brush holder must also be cleaned each time a
worn brush set is replaced.
SIEMENS AG T61160347010001 (DMHO V9)
Operating instructions 1GG6286-0NA4.-1VV1-Z 6-3