42/23-81 EN Rev. 4
System Manual SCK Gas Sampling System
159
Operating the service switch
The service switch puts the system into maintenance mode. If work described in
the following maintenance instructions must be performed in maintenance mode,
proceed as follows.
Always take the following safety measures when performing this work:
Wear the general protective equipment.
Before commencing any work on the gas sampling system, turn the service
switch to
ON
and secure the service switch against unauthorized switching (with
a padlock).
Additionally press the EMERGENCY-STOP switch before working on the retrac-
tor or probe.
Do not enter the danger area around the retractor until it is at standstill and the
warning lamps and buzzer are off.
Never stand in the danger area around the retractor when the protective installa-
tion is closed.
When the warning lamps light up or the earning buzzer buzzes, leave the danger
area around the probe retractor immediately as the probe is about to move at
any moment.
Press the EMERGENCY-STOP switch immediately if anyone is still in the danger
area around the retractor after the warning lamps light up or the warning buzzer
buzzes.
Explanation of safety measures:
Safety regulations for maintenance work on page
156.
The service switch is in the
OFF
position.
Meaning
Safety measures
Requirement
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