Lenze MDxMA Three-phase AC motors ATEX 3D category - Manual (Page 12)

Maintenance
Maintenance intervals
Periodic inspections
4
12 BA 12.0031 EN 2.1
4 Maintenance
Danger!
If there are unusual operating noises, vibrations, or increased temperatures in
the geared motor during or between the prescribed checks, the geared motor
must be immediately put out of operation and maintenance must be
performed!
On principle, the requirements from the applicable regulations and standards,
such regulations from professional trade associations (BGV A2), operating
regulations (EN 50110) and installation regulations (EN 60079-17) must be
observed!
Plastic parts must be damp-cleaned only to prevent electrostatic charge.
4.1 Maintenance intervals
Based on EN 60079-17, the following terms are used in this chapter:
Visual inspection
Inspection which identifies, without the use of access equipment or tools, those defects,
such as missing bolts, which will be apparent to the eye.
Close inspection
Inspection which encompasses those aspects covered by a visual inspection and, in
addition, identifies those defects, such as loose bolts, which will be apparent only by the
use of access equipment, for example steps, and tools.
Maintenance and repair
Combination of any actions carried out to retain an item (here: the motor) in, or restore it
to conditions in which it is able to meet the requirements of the relevant specification and
perform its required functions.
4.1.1 Periodic inspections
Geared motors withdirectmotor mounting(without standard cup) arealso equipped with
oil-sight glass or oil-level check plug in category 3. This is to provide a means of checking
for oil loss in the gearbox if oil enters the motor unnoticed through leakage at the shaft
sealing ring of the motor.
For the mounting positions A, B, C, E and F, the time intervals listed below can be doubled.
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