Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 16)

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IM 11B08A01-01E
<TIIS>
WARNING
• In case of TIIS-certifi ed wiring, the attached cable packing adapters or sealing fi tting must
be used.
Otherwise, it does not comply with TIIS regulation.
• Use the wiring to the pressurized enclosure, whose allowable temperature is more than
80°C.
IMPORTANT
Cables should be arranged in an orderly manner in the protection system.
Otherwise, they may damage other parts (e.g. relay).
 Maintenance and inspection
Before opening the door or cover of the explosionproof section for maintenance and inspection,
be sure to turn off the power and wait for at least 25 minutes. After completing inspections, close
the door or cover tightly, check that the specifi ed explosionproof performance is ensured, and
then turn on the power. The parts to be checked are described in “6. Maintenance”.
If any of the following damage occurs, contact a Yokogawa sales representative or the Yokogawa
sales division.
• The screws securing the Protection System (explosionproof construction) are damaged
• The exterior of the enclosures is damaged
• Packings are cracked or deformed
 Override function (The analyzer with FM-Y does not have this function.)
WARNING
When the override function is used, use a gas detector to check that the concentration of
explosive gases in the ambient atmosphere is less than the allowable limit.
In this analyzer, if the pressure of the pressurized enclosure (electronics section) drops below a
specifi ed level while the power is on, the protection system is activated to stop power supply.
Therefore, if the door of the electronics section is inadvertently opened for maintenance while the
power is on, the protection system is activated to cut off the power.
The override function forcibly disables this function.
This function allows operators to open the door or cover of the pressurized enclosure while the
power is still on.
This function is activated by opening the cover of the protection system and pressing the override
switch while the light sensor is detecting more than 100 (lx) of light.
The function becomes invalid automatically when the cover of the protection system is closed.
2nd Edition : May 11, 2012-00