Siemens SIMOTICS TN 1LL8, Operating & Installation Instructions Manual

Page: 102 / 148

Additional tests may also be required according to the system-specific conditions.
NOTICE
Machine damage
When carrying out the inspection, if you detect any impermissible deviations from the normal
state, you must rectify them immediately. They may otherwise cause damage to the machine.
9.1.5 General inspection
Check that the installation conditions are observed. After approximately 16,000 operating
hours – or the latest after two years – we recommend that the following checks are performed:
Table 9-2 Checks that have to be performed during the general inspection
Checking When the
motor is
running
At stand‐
still
The electrical parameters are maintained X
The permissible bearing temperatures are not exceeded X
The smooth running characteristics and machine running noise have not
deteriorated
X
The foundation has no cracks or indentations. (*) X X
The machine is aligned within the permissible tolerance ranges. X
All the fixing bolts/screws for the mechanical and electrical connections have
been securely tightened
X
All the potential connections, grounding connections and shield supports are
correctly seated and properly bonded
X
The winding insulation resistances are sufficiently high (Page 86) X
Any bearing insulation is fitted as shown on the plates and labels X
The CABLES and insulating parts and components are in good condition
and there is no evidence of discoloring
X
Condensation can freely flow away. X
(*) This check can be made at standstill or when running.
If you detect any deviations during the inspection, you must rectify them immediately. They
may otherwise cause damage to the machine.
See also
Setpoint values for monitoring the bearing temperature (Page 85)
Maintenance
9.1 Inspection and maintenance
SIMOTICS TN Series N-compact 1LL8
102
Operating Instructions 11/2018