12
6. PREPARING FOR USE
Before assembling the SCUBA unit verify that all components comply with local or European
standards.
• Before connecting the rst stage to the cylinder verify that the connection is free from
dirt (sand, debris) and that the O-ring is undamaged.
• INT connection: place the rst stage connector on the cylinder valve after checking
that it is also free from dirt or debris. Check that the contact surfaces are in the correct
position and then tighten the yoke screw. In order to obtain the maximum comfort, the
low pressure hose connecting the rst stage to the second stage should be horizontal
and directed toward the diver’s right shoulder (Img. 4).
• DIN connection: screw the rst stage connector on the cylinder valve after checking that
this is also free from dirt or debris. Before tightening the hand-wheel and while screwing
it in, conrm that the threads on the DIN connection and on the valve correspond
correctly and are not crossed. In order to obtain the maximum comfort, the low pressure
hose connecting the rst stage to the second stage should be horizontal and directed
toward the diver’s right shoulder (Img. 5).
Img. 4 Img. 5
• Fit the carrying system/jacket (refer to the appropriate user instruction guide). After tting
the carrying system, the cylinder should sit securely. Check to be sure that the cylinder
cannot come loose on its own accord.
• Conduct a vacuum leak test. With the cylinder valve closed slowly inhale from the
second stage. It should be possible to achieve and maintain a minimal negative pressure
without air entering the system. This test must be repeated for all regulator second
stages connected to the SCUBA unit in use.
• Now conduct a high-pressure leak test. Slowly open the cylinder valve, check for any
leaks and read the pressure registered on the pressure gauge.
6.1 Set-up/in-usewarning
⚠
WARNING
While opening the cylinder valve, the pressure gauge face must not be directed
towards the user or others, in the event and risk of a pressure gauge malfunction.
⚠
WARNING
When opening the cylinder valve the second stage purge button should be slightly
depressed, so that the second stage valve is open.
⚠
WARNING
Do not push down on the purge button in low temperatures, as this may cause a
second stage freeze-up.
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