11
Decommissioning
11.1
Safety information on shutting down
Technical knowledge needed / requirements for shutting down
NOTICE
•
You are basically familiar with GM32.
•
You are well versed in the ATEX Directives.
•
You are familiar with the local situation, especially the potential hazards caused by
gases in the gas duct (hot/noxious). You are capable of recognizing and preventing
danger by possibly escaping gases.
If one of these requirements is not met:
b
Please contact SICK Customer Service or your local representative.
Risk of explosion
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.
Gas
DANGER
Hazard by gas escaping when the SR-unit is swiveled out
Excess pressure in the gas duct can cause hot and/or noxious gases to escape when
the SR-unit is swiveled out.
b
Swivel the SR-unit out only when you have taken suitable safety measures.
b
Set the lever on the purge air fixture to the “Close” position".
DANGER
Danger to life by emerging hot/toxic gases
Hot and/or noxious gases can escape during work on the gas duct, depending on the
plant condition.
b
Work on the gas duct may only be performed by skilled persons who, based on
their technical training and knowledge as well as knowledge of the relevant regula‐
tions, can assess the tasks given and recognize the hazards involved.
11
DECOMMISSIONING
96
O P E R A T I N G I N S T R U C T I O N S | GM32-Ex
8015558/YYJ8/V1.7/2016-07 | SICK
Subject to change without notice
