Kongsberg cNODE Maxi 31 Ex d, Instruction Manual

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390755/G
15
Further requirements
Closing the transponder is the next step.
Closing the transponder, page 15
Closing the transponder
Closing the transponder requires special attention. It is very important that the
transponder is properly closed and watertight before it is submerged.
Prerequisites
WARNING
Do not open when an explosive atmosphere is present.
Make sure the battery is labelled cNODE Ex battery. Make sure the on/off switch
is switched on.
The following specific tool is required for this task:
• 5 mm Hex key
• Torque wrench
Procedure
1 Replace the transducer.
2 Inspect the bolts.
If they have no damage they can be used again. New bolts must be of the same
grade; Super-duplex with minimum yield stress 550 MPa.
3 Clean the bolts and the hole threads.
4 Spray Loctite activator 7649 on the bolt’s threads.
5 Add a drop of Loctite 243, threadlock to the lower part of the threads in the tube.
6 Fasten the bolts with a torque of 9.4 Nm.
Getting started