24
TI 11B08A01-01E
● Installation and wiring works
The safety system is built-in GC8000. Installation and wiring into GC8000 are completed before
shipping.
• Do not use for other than GC8000.
• Do not change connection of cables and harnesses.
● Action in Emergency
Relays and SSRs in safety system will be in safe state (contact opens) when de-energized.
In emergency, stop supply of power to GC8000 immediately and contact your nearest Yokogawa
representative.
• In a normal situation, follow the procedure of “● Operation” for shutdown, or GC8000 may
be damaged.
● Regular proof test
In order to maintain the safety function, proof test at least once while test period below is
necessary. Contact your nearest Yokogawa representative.
If proof test is not performed for longer than test interval, GC8000 cannot be used as explosion
proof equipment.
Protection system
Oven safety unit
Test interval
No needed
3 years
● Replacement
In following case, stop supply of power to GC8000 immediately and replace the safety system.
• Safety function does not work correctly.
• Safety system is used over replacement interval.
Replacement is needed even if all safety functions work correctly.
Contact your nearest Yokogawa representative.
Protection system
Oven safety unit
Replacement interval
12 years
27 years
Sep. 07, 2017-00
