Pressure - Zodiac MEDLINE 6.8 Mode D'emploi

c: 240 mb
c: 240 mb
NOTE: Observing a slight air loss before screwing the valve cap on is perfectly normal.
Only the caps ensure complete sealing.

2.5. PRESSURE

The tube has 5 compartments. Each one should be at a pressure of 240 mb / 3.4 PSI.
This is the correct pressure for using the tube.
The ambient air or water temperature
has a proportional influence on the
pressure level inside the tube.
It is therefore important to be able to anticipate changes.
Check and adjust the pressure in the inflatable compartments (by adding or releasing air as the case
may be) in line with temperature variations (especially when there are significant temperature
variations between morning and evening in areas that are particularly hot) and make sure that the
pressure does not deviate from the recommended pressure range (220 to 270 mb).
UNDERPRESSURE HAZARD
Example:
Your boat is exposed to bright sunlight on the beach (temperature = 50°C) at the recommended
pressure level (240 mb/3.4 PSI). When you put it in the water (temperature = 20°C), the temperature
of the inflatable compartments and the pressure inside them will fall in step (by up to 120 mb) and
YOU WILL NEED TO REFLATE to regain the millibars lost due to the difference in temperature between
the ambient air and water.
Hence, it is perfectly normal to observe a fall in pressure at the end of the day when the outside
temperature falls.
TUBE – PRESSURE
b: 220 mb
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b: 220 mb
Ambient temperature
+1°C
-1°C
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Tube internal pressure
+4 mb / 0.06 PSI
-4 mb / 0.06 PSI
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Edition 1