4. Maintenance
4.1 Maintenance safety
Keep away from live circuits. Operating personnel must observe
safety regulations at all times.
WARNING!
Ground the DGA monitor cabinets as instructed in the wiring
instructions. Verify the grounding before and after performing maintenance on
the unit.
WARNING!
Do not modify the DGA monitor or use it in ways not described in
the documentation. Modifications may lead to safety hazards, equipment
damage, failure to perform according to specification, or decreased equipment
lifetime.
CAUTION!
Surfaces inside DGA monitor that are marked with the symbol
below heat up during normal operation. Avoid touching hot surfaces and wear
protective gloves when working inside the cabinet. Whenever possible, allow
the DGA monitor to cool down before starting the work.
CAUTION!
Wear protective eyewear and gloves.
4.2 Cleaning DGA monitor
OPT100 DGA monitor does not need to be cleaned to maintain its normal operation. The
enclosures are IP66 rated and measurement system is hermetically sealed. If a significant
amount of contamination is present inside the enclosures, verify that:
• All cable glands fit tightly around cables, or are plugged if unused.
• Doors of the enclosures close properly.
• There are no oil leaks inside the DGA monitor.
OPT100 User Guide M211858EN-U
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