MA-025 – DGA 900 Operator Guide – Rev 2.0 12-Apr-19 Page 11 of 92
not limited to, ‘Working at height’ and ‘Using Mobile Elevated Working
Platforms’ training.
WARNING: If working at a height greater than 4 feet (1.2 metres) or at a
height greater than that stipulated by national or site regulatory
requirements, it is the responsibility of the installer to ensure that planned
work complies with those requirements.
WARNING: The user shall also ensure that any third-party equipment, such
as an approved platform, scaffold or lift is suitable and safe before
commencing work. Ladders or improvised platforms do not meet GE service
engineer requirements.
WARNING: Once installed, this product may have more than one source of
supply. Disconnect all supplies at their source before accessing the cabinet
for servicing. Follow the site lockout-tagout (LOTO) procedure.
WARNING: Disconnection from the supply is achieved through the external
circuit breaker or switch.
WARNING: Ensure all power sources, including relays, are de-energised as
stipulated by lockout-tagout (LOTO) requirements before performing any
maintenance work inside the product.
WARNING: The product is operated with the door shut under normal use.
The door shall be kept locked and should only be opened for service access by
suitably qualified and authorised service personnel. During service access,
hazardous voltages are accessible.
WARNING: Only GE-trained and certified personnel may commission GE
Kelman products. Commissioning tasks include making any connections
and/or performing any work within the enclosure, or performing tasks such
as purging the oil circuit between the transformer and the product, and/or all
first start-up procedures relating to equipment or firmware/software.
WARNING: The product provides IP56 water spray protection. It is possible
for a water deluge system to exceed IP56 thresholds depending on the
location, pressure and direction of the water jets. Should customers require
testing a water deluge system in the area in which the product is installed, GE
recommends powering down the product and draping it with a suitable
waterproof covering.
2.3 Hazardous Substances
The gases measured in the product are extracted from the oil and expelled to the
atmosphere via the exhaust vent on the external base of the Analysis module. The area
around the exhaust vent should be kept clear and unobstructed. All expelled gases are at
concentrations that are nonflammable, nontoxic and quickly diluted in the surrounding
atmosphere. The expelled gases are not hazardous to health or life.
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