5
Manual maxGUARD
2526740000/02/03.2018
2 Safety
| Use in explosive risk zones
2.3 Use in explosive risk zones
A list of all maxGUARD products that may be used in explo-
sive atmospheres, zone 2, can be found in section 3.9. If
maxGUARD products are used in explosive risk zones, the fol-
lowing
additional
notes apply:
–
Staff involved in assembly, installation and operation must
be qualified to perform safe work on electrical systems
protected against potentially expolsive atmospheres.
–
The provisions of IEC 60079-14 must be observed.
–
The products must be installed in a tool-secured enclo-
sure with a degree of protection of at least IP54 accord-
ing to IEC 60079-7.
–
The housing enclosing the products must meet the
requirements of explosion protection type Ex na, Ex eb or
Ex ec.
–
Prior to starting installation, ensure that no potentially
explosive atmosphere exists.
–
If cut cross-connectors are used, AMG PP separation
plates must be inserted wherever there are bare cut
edges next to one another.
–
If the temperature of a conductor or conductor entry
exceeds 70 °C during rated operation, or 80 °C at the
contact point, a conductor must be used that complies
with the temperature specifications as per the actually
measured temperature values.
–
The products may only be operated in an environment
with pollution severity level 2 or lower in accordance with
IEC 60664-1.
–
A stabilised power supply (24 V DC) with double or rein
-
forced isolation must be used (SELV/PELV).
–
A visual inspection of the maxGUARD station is to be per-
formed once per year.
–
If a potentially explosive atmosphere exists, the following
applies:
–
Live electrical connections may not be disconnected.
–
DIP switches, binary switches and potentiometers may
not be operated.
2.4 Legal notice
The products belonging to the maxGUARD family are CE-
compliant according to EU Directive 2014/30/EU (EMC
Directive).
Selected products belonging to the maxGUARD family meet
the requirements of the ATEX Directive 2014/34/EU.
