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Fit the appropriate plug as shown
(see Appendix for plug number)
Fit the air box seal, microduct and mi-
croduct seal in position as for normal
cable installation
19.0 Microduct integrity and Lubrication
This is entirely the responsibility of the operator.
To be sure that the microduct into which the cable is to be inserted is installed appropriately, it is recommend-
ed that its integrity and lubrication be checked.
i.e. check that the microduct is:
1. Not blocked
2. Not squashed
3. Continuous (i.e. it has not been fractured somewhere along its route and the fractured ends separated)
4. Also check that any joins are pressure tight
5. Finally check that the microduct is appropriately lubricated.
The easiest and most straightforward way to complete these checks is to set the machine up for a normal ca-
ble insertion but fit a seal in place of the cable. The microduct can then be pressurized without running the
belt drive.
CAUTION: ANY OBJECT INADVERTENTLY LEFT IN THE MICRODUCT DURING
THE MICRODUCT LAYING MAY BE EXPELLED FROM THE END OF THE MI-
CRODUCT WITH HIGH FORCE AND VELOCITY. IT IS IMPERATIVE THAT NO
PERSONNEL BE IN THE VICINITY OF THE END OF THE MICRODUCT OR THAT A
SUITABLE DEVICE IS FITTED TO THE END OF THE MICRODUCT TO ARREST
ANY EXPELLED OBJECT.
The checks listed at 1-4 (inclusive) above may all
be carried out at the same time using one check.
The procedure is outlined below.
Set up the air box and microduct clamp as shown right.
When the air box has been set up as shown in
the photo, the air box and microduct clamp should be
closed as for usual cable installation.
