Table of Contents
Advertisement
Operation
1. Switch off the circuit-breaker
2. Use the key
3. Remove the keys
Note
The circuit-breaker cannot be closed again until the keys have been returned to the key transfer
unit, the key transfer unit has been locked, and the coded key is back in the circuit-breaker.
See also
Safety locking system (option M10) (Page 55)
9.4
Inspection and maintenance
9.4.1
Inspection
The purpose of an inspection is to ascertain and evaluate the current status of the equipment.
An inspection mainly comprises visual checks. Inspections should be carried out based on a
schedule that meets the needs of the special ambient conditions at the location of use. The
following servicing and inspection instructions are used as the basis for regular inspection of
the equipment.
9.4.2
Checklist
Maintenance
Clean the cabinet (exterior) Operator
Clean the cabinet (interior)
Check the electrical con‐
nections (external power
and test connections) and
check the cable/screw ter‐
minals.
Check the internal connec‐
tions.
Carry out inspection and
visual check.
SINAMICS SM150 6SL3845-2NN41-8AD2
Operating Instructions Rev.201910281310 EXAMPLE
③
transfer unit
.
②
to unlock the keys in the key transfer unit
④
and release the locks
Carried out by:
Siemens serv‐
ice personnel
Operator
Siemens serv‐
ice personnel
Siemens serv‐
ice personnel
①
. Only now can you remove the coded key
⑤
on the cabinet doors.
Frequency
As required
Annually
After 1 year
and then every 4 years.
After 1 year
and then every 4 years.
Annually
Maintenance
9.4 Inspection and maintenance
②
for the key
③
.
Comments
Visual check, clean if required.
Visual check, clean if required.
Check the cable and screw termi‐
nals regularly to ensure that they
are secure. Tighten them if nec‐
essary.
Refer to the following pages
137
Advertisement
Table of Contents
