9
Maintenance
9.1
Safety
DANGER
Risk of explosion through incorrect performance of maintenance work
Incorrect performance of maintenance work in potentially explosive atmospheres can
cause serious injuries to people and damage during operation.
•
Maintenance work and start-up activities as well as checks must be performed by
experienced/trained technicians having knowledge of the relevant rules and regu‐
lations for potentially explosive atmospheres, especially:
–
Ignition protection types
–
Installation procedures
–
Range setting
•
Standards to be applied:
–
IEC 60079-14, Annex F: Knowledge, skills and competencies of responsible
persons, operatives and designers
–
IEC 60079-17: Electrical installations inspection and maintenance
–
IEC 60079-19: Equipment repair, overhaul and reclamation
DANGER
Risk of explosion when using spare parts and expendable parts which are not
approved for potentially explosive atmospheres
All spare parts and expendable parts for the in-situ measuring device GM32 Ex have
been checked by SICK for ATEX suitability. The use of different spare parts and expend‐
able parts increases the risk of an explosion and the ATEX certification for the device
becomes void.
b
Use only original SICK spare parts and expendable parts.
DANGER
Risk of explosion through residual voltages and hot surfaces in the device
When the device is switched off, residual voltages and hot surfaces represent an
increased risk of explosion when the device is open.
b
Wait 20 minutes after switching off the main power supply before opening the
enclosure.
DANGER
Risk of explosion through escaping protective gas
If the device is opened directly after switching off, it is possible that residual amounts
of protective gas emerge uncontrolled. This means that the device represents an
increased risk of explosion and - when inert protective gases are used - a risk of suffo‐
cation.
b
Wait 20 minutes after switching off the main power supply before opening the
enclosure.
MAINTENANCE
9
8015558/YYJ8/V1.7/2016-07 | SICK
O P E R A T I N G I N S T R U C T I O N S | GM32-Ex
73
Subject to change without notice