283926 / YA6S60300060
2022‐03‐04·BA00·III·en·01
Function and device design
7
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Audible signalling device
Series YA6S/2
Commissioning, maintenance, repair
• Only have commissioning and repairs performed by qualified and authorised persons
(see chapter "Personnel qualification").
• Before commissioning, make sure that the device is not damaged.
• Perform only maintenance work described in these operating instructions.
3.4
Modifications and alterations
4
Function and device design
4.1
Function
Application range
The series YA6S/2 signalling device is intended for use in explosive or harsh
environments. It is used in gas hazardous areas in Zones 1 and 2, as well as in dust
hazardous areas in Zones 21 and 22.
Mode of operation
When activated, the signalling device emits an audible signal, depending on the
configuration and device version.
DANGER
Explosion hazard due to modifications and alterations to the device!
Non-compliance results in severe or fatal injuries.
• Do not modify or change the device.
No liability or warranty for damage resulting from modifications and
alterations.
DANGER
Explosion hazard due to improper use!
Non-compliance results in severe or fatal injuries.
• Use the device only according to the operating conditions described in
these operating instructions.
• Use the device only for the intended purpose specified in these
operating instructions.
