Potential Safety Hazards - ABB PGC5000 Service Instruction

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WARNING – Bodily injury. These symbols, and the signal word "WARNING", indicate a
potentially dangerous situation. Failure to observe this safety information could result in death
or severe injury. The text may state the hazard, how to avoid the hazard, and the result if not
followed. The bolt is for electrical warnings; the exclamation point is for general warnings.
NOTICE – Equipment damage or loss of data or cybersecurity risk. This symbol
indicates a potential for equipment damage, loss of data or another unintended outcome.
Failure to observe this information may result in damage to or destruction of the product
and / or other system components.
IMPORTANT NOTE: This symbol indicates operator tips, particularly useful information, or
important information about the product or its further uses.

Potential safety hazards

DANGER – Serious damage to health / risk to life. Ensure that there are no hazardous or
flammable gases present in the immediate area of the analyzer. Protected enclosures that rely
upon air purge and pressurization will be jeopardized when the protected air is removed. During
this non-purged time, a danger exists for fire, explosion, damage to property, and injury or death
to plant personnel.
WARNING – Bodily injury. high voltage safety: The DBDID uses a high voltage alternating
current discharge to create a plasma. The system operates at a high voltage and a low current
which is applied to the glass reactor tube at the round metal electrodes. This electrode should be
covered with the plasma shield whenever the plasma is operating.
Before performing any maintenance procedures or adjustments to the plasma cell, make sure the
power is off. The best way to do this is to remove the power pack from the main line. This will
ensure that the plasma cell is not at voltage.
If the center rod of the plasma supply is not connected to ground, the center rod will have
voltage on it (approx. 40 Volts) and it will shock maintenance personnel. It will also spark
when connecting the ground wire to the center electrode; do not do this in a hazardous
environment. ABB recommends turning the plasma power off, allowing a minimum of 20
seconds for the DBDID to discharge and then connecting the center electrode to ground. If done
in the proceeding manner, the center electrode will not spark.
DANGER – Serious damage to health / risk to life. Ensure there is no hazardous atmosphere
present when performing maintenance on the unit. Do not separate components when energized.
This applies to all connectors and connections, cabling and wiring.
NOTICE – Equipment damage or loss of data. Printed circuit boards and other electronics are
electrostatic discharge sensitive. Ensure that proper ESD measures are taken, as defined by
location.
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