Removing the machine
Note
Only qualified personnel is permitted to perform maintenance work. Contact the
Service Center (Page 117), if necessary.
● If you have to disassemble the motor, disconnect the connecting leads from the terminals
and the entry plate from the terminal box casing. In this way, the relative positions of the
cables will remain correct. Effective sealing of the cables in the cable entries is retained.
● Check the identification of the connecting cables. If the identifiers are not correct, correct
the identification.
Wiring
The terminal diagram shows only the mains connection conditions without including any
compensation and auxiliary windings.
Mark internal connections for identification before disconnecting them for maintenance work.
9.2.2 Disassembling the machine
Attaching a rotor
The centerings in the shaft extensions have reset threads. Eyebolts conforming to DIN 580
are not suitable for vertical rotor attachment as only a small number of thread grooves are
used.
● Depending on the weight of the rotor and the direction of the load, other suitable elements
(with a length of engagement > 0.8 x thread diameter) should be used.
Disassembling the machine
1. The drawings and parts lists do not contain any detailed information about the type and
dimensions of fixing elements. Therefore, make sure their assignment is correct before
disassembly. Mark their assignment with identification for assembly.
2. Before disassembly, ensure that the housing and bearing shield are marked at a
corresponding point on the non-drive end. Use a suitable means of identification, e.g. a flat
chipping mark. The correct position of the brush rocker in relation to the bearing shield and
stator frame is important for setting the neutral zone.
3. Ensure correct assignment and orientation of the parts: bearings, sealing rings,
compression springs, spring washers, covers with different centering lengths.
4. When removing the DE bearing shield, make sure that the windings that project from the
stator frame do not become damaged.
Maintenance
9.2 Repair
SIMOTICS DC 1GG5
94 Operating Instructions 02/2016
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