1 Introduction
Manual ENCO 08-M · EN05 · 2018, September 10th
13
1.4
Inspection and maintenance work
1.4.1
General information
Explosion-proof electrical control units must be regularly maintenanced. The time
intervals of this maintenance depend on the operating and environmental
conditions.
Notice
We recommend at least one check per year (e.g. in connection with the
annual calibration).
In principle, ENCO 08 is maintenance-free.
Danger
Work on live electrical equipment is generally prohibited in hazardous
areas (except for intrinsically safe circuits).
In special cases, work can also be carried out on live electrical equipment in
hazardous areas if it is ensured that no potentially explosive atmosphere is
present. This may only be done with explosion-proof, approved measuring
instruments.
Danger
If access to electrical modules is necessary, the following precautions
must be taken:
•
The entire device must be disconnected from the power supply.
•
When working with electronic assemblies, a connection must be
established between an earthed object and the body.
If the device is repaired regarding a part which depends on explosion protection, it
may only be put back into operation after it has been checked by a certified expert
(
section 1.2.4.4 Qualification of personnel
).
If repairs are carried out by RMG service, no acceptance by an expert is required.
