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5.1.3.
Assembly under pressure
A pressure test is made to check the clamp for leaks after the
clamp has been installed and before drilling. This is made using a
pressurised cylinder that has been filled from the compressed air
supply.
Drilling of the pipe is not started until the pressure test has been
made successfully. The bore diameter measures 14.5 mm.
After the bore is drilled, the drill is removed and the measurement
fitting (tap) can then be closed. After the drill is removed, any resid-
ual chippings outside the tap are removed by opening the tap brief-
ly.
5.1.4.
Assembly of the PBCOver reverse running protec-
tion unit
1. Seal the PBCOver reverse running protection unit on the ½"
thread.
2. Screw into the measurement fitting or tap (use a 36 mm wrench
above the thread).
3. Insert the sensor according to the nominal width determined
from the scale (see following table or own calculations).
Assembly of the tapping clamp under pressure should
only be made by trained personnel.
1 Work surface for 36 mm wrench
2 ½" thread
5 Initial operation
21
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