MSENSE
®
DGA 9 7045899/02 EN – 11.2020 Page 40
• Remove the two knurled screws and the device protective cover.
• Now align the device by turning it clockwise until the vent screw is at the 12 o'clock position at
the top.
• Use a M55 open-ended spanner or 1½" adjustable spanner to tighten the union nut until the
connection is a firm fit. Make sure that the 12 o'clock alignment is not displaced. Use an addi-
tional M55 open-ended spanner or a 1½" to lock the device during tightening and hold it in
position.
Note!!!
The following steps must be carried out in accordance with company
procedures. Work carefully and prevent air getting into the transformer.
Use a container to collect any leaking oil.
• Unscrew the vent screw by 3 or 4 turns anti-clockwise using the long size 4 hexagon key (vent-
ing is active).
• Open the transformer gate valve very carefully until oil runs out of the sample hose. Allow the
escaping oil to run into a container.
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