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AIR PRESSURE (CON’T)
RISK OF OVER PRESSURE OR OVER INFLATION
Example: The boat is inflated to the recommended pressure (240mb / 3.4PSI) at the beginning or
end of the day, low outdoor temperature =10°C/50°F. Later in the day, the boat is exposed to full
sunlight 50°C/122°F, either on the beach or on deck. The temperature inside the compartments will
increase (up to about 70°C/158°F) especially with a dark color buoyancy tube, causing the pressure
to double (480 mbar). Deflating is necessary to bring it back to recommended pressure. It therefore
is mandatory to turn the I/C valves to 12 o’clock, and leave the overpressure caps off,
when boat is stored inflated. Overpressure valves will regulate & keep the main buoyancy tube at their
acceptable operating pressure.
Deflation valve :
Remove the valve cap from the compartment
to be deflated.
Release air by pushing gently on the
diaphragm or membrane (1), using an object
that will not cut or puncture, such as a ball
point pen.
CAUTION : MAKE SURE THE DIAPHRAGM
DOES NOT FOLD OVER ITSELF,
Screw the valve cap back into position.
1
I/C Valve:
Unscrew a valve cap and place the pressure gauge in it.
Turn all I/C flywheels to the “inflation” position (“red area”) @ 12 o’clock.
Pull on the flywheels to let some air escape, at the same time monitor visually the pressure drop
on your pressure gauge.
When your pressure gauge registers the correct pressure, unscrew the pressure gauge and
replace all valve caps.
Follow all recommendations in above paragraph “Under Inflation”.
WARNING
WHEN OVER INFLATED, THE EXCESSIVE PRESSURE EXERTED ON
THE BOAT’S INFLATABLE STRUCTURE CAN CAUSE IRREPARABLE
DAMAGE. ALWAYS STORE INFLATED BOATS, WITH O/P CAPS OFF.