Maintenance; Safety - SICK GM32 Ex Operating Instructions Manual

9

MAINTENANCE

9 Maintenance
9.1

Safety

60 O P E R A T I N G I N S T R U C T I O N S | GM32 Ex
WARNING
Risk of explosion
Some of the work described in this Chapter assumes an Ex free zone.
Wait 20 minutes after switching off the main power supply before opening the
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enclosure.
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 and commissioning tasks as well as checks should only be carried
out by experienced/trained personnel with knowledge of the rules and regulations
for potentially explosive atmospheres, especially:
– Ignition protection types
– Installation procedures
– Zone classification
• Standards to be applied:
– IEC / EN 60079-14, Annex F: Knowledge, skills and competencies of respon‐
sible persons, operatives and designers
– IEC / EN 60079-17: Electrical installations, inspection and maintenance
– IEC / EN 60079-19: Equipment repair, overhaul and reclamation
DANGER
Risk of explosion when using spare or expendable parts not approved for the Ex zone
All spare and expendable parts for the in-situ gas measuring device have been checked
by SICK for ATEX suitability. The use of different spare parts and expendable parts
increases the risk of an explosion and the ignition protection can no longer be ensured.
Use only original spare parts and expendable parts from SICK.
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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.
Wait 20 minutes after switching off the main power supply before opening the
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enclosure.
DANGER
Hazard for health through contact with inert protective gas
Inert protective gas can emerge uncontrolled when the device is opened directly after
switching off. Direct contact with inert protective gas is a high health risk, including risk
of suffocation.
Interrupt the inert gas feed before opening the device so that only the volume of
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inert gas in the device can escape.
Ensure good ventilation and air exchange.
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Never open the device when the room is too small.
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8015558/1O6S/V1-9/2024-08 | SICK
Subject to change without notice