Bombard TYPHOON 285 Manual Del Propietário página 31

The correct pressure for the buoyancy tube and the keel is 240 mb/3,4 PSI,
and 800 mb / 11.6 PSI for the inflatable floor.
If your boat is not equipped with a
purchase one from your Dealer. This will permit a quick and efficient control of the pressure
during inflation. Without a pressure indicator, stop inflating when the foot-pump gets difficult to
operate, and the boat is « hard » (you should not be able to bend the cone ends).
Ambient temperature of air and water
have an effect on the boat's internal
pressure
Therefore, it is important to anticipate:
Because of temperature variations (especially when this variation is important between the
beginning and the end of the day, in hot areas) check and adjust the pressure in the inflated
compartments by inflating or deflating. Be sure that pressure remains within the
recommended zone, between 220 mb/3,10 PSI and 270 mb/3,85 PSI.
RISK OF UNDERPRESSURE
EXAMPLE: Your boat is in direct sunlight on the beach (temperature =50°C/122°F) at
recommended pressure (240 mb/3,4 PSI). after putting it in the colder water (temperature
=20°C/68°F), the internal temperature and pressure of the tubes will both drop (up to 120 mb/1,7
PSI) and YOU WILL HAVE TO INFLATE AGAIN until you regain the lost pressure due to the
difference in temperatures. Therefore, a loss of pressure at the end of the day when ambient
temperature drops is perfectly normal.
Proper inflation is critical to the performance of the boat. It is the pressure in
the tubes that gives your boat the necessary rigidity to perform well. Under-
NOTICE :
inflation causes improper flexing of the tubes which will result in stress and
chafe
RISK OF OVERPRESSURE
EXAMPLE: Your boat is inflated to the recommended pressure (240 mb/3,4 PSI) at the
beginning of the day (low ambient temperature =10°C/50°F). Later in the day, your boat is in
direct sunlight on the beach or on a yacht's deck (temperature =50°C/122°F). Internal
temperature of all inflated compartments can then increase and reach up to 70°C/158°F
(especially for dark-coloured tubes). The consequence will be a doubling of previous pressure
(480 mb/6,8 PSI). YOU WILL THEN HAVE TO DEFLATE until you reach the recommended
pressure.
WHEN YOUR BOAT IS OVER INFLATED, PRESSURE BECOMES TOO
STRONG FOR THE INFLATABLE STRUCTURE, AND COULD CAUSE A
WARNING
BREAK IN THE FABRIC ASSEMBLY
IN CASE OF OVERPRESSURE
PRESSURE
ACCESS
pressure indicator, we recommend that you
Ambient temperature
+1°C / +1,8°F
-1°C / -1,8°F
9 / 10
tubes' internal pressure
+4 mb / 0,06 PSI
-4 mb / 0,06 PSI
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