Zodiac MilPro Futura Commando FC 420, Руководство пользователя

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12/18
AIR PRESSURE
NOTE
Before checking the boat’s air pressure, turn all I/C valves to the
"INFLATION POSITION" (“red area”). @ 12 o’clock,
Operating pressure for the buoyancy tube and the keel is 240 Mbar / 3.4 PSI, in the middle of the
“green area” on the “Go – NoGo” pressure gauge.
RECOMMENDATION: Your boat is equipped with a “Go NoGo” pressure gauge; we recommend you
purchase a “screw-on shop pressure gauge P/N Z7111 from your Zodiac Dealer. It will permit you to
read the pressure easily and efficiently during inflation, as it is graduated from 0 to 400 millibars. It will
also permit you to perform pressure tests, as the one that comes standard with the boat (P/N Z 1008)
is only a “Go NoGo“ pressure gauge. In the green it’s a go - In the red it’s a no-go and you have to top
up the boat until the pressure reaches the green = OK zone.
When inflating a boat without a pressure gauge, inflate until the overpressure valves open.
How to foresee pressure changes: Check and adjust the pressure in the compartments (by
inflating or deflating) when noticeable temperature changes occur, especially in tropical areas where
important temperature variations occur between morning and night. Make sure the pressure doesn’t
vary from the recommended boat operating pressure parameters of 240mbar = 3.4PSI +/- 10%
The ambient or water temperature will
alter the main buoyancy tube pressure
by 4 millibars or 0.06PSI for every
degree
Celsius, or 1.8°Farenheit
variation as shown here:
1 bar = 1000 millibars = 14.50 PSI
240mbar x 0.01450 = 3.48 = 3.4 PSI
Ambient
or water temperature
Internal
buoyancy tube pressure
Plus 1°C or 1.8°F Plus 4 mbar or 0.06 PSI
Minus 1°C or 1.8°F Minus 4 mbar or 0.06 PSI
RISK OF PRESSURE LOSS
Example: Your boat is on the beach in the sun, temperature 50°C (122°F), at the recommend
pressure (240 mbar). When you launch the boat into 20°C (68°F) water, the temperature and the
internal pressure in the compartments will both decrease (as much as 110mbar). Consequently the
boat must be topped up to recuperate the pressure loss, due to the temperature difference (between
the ambient air and the water). By the same token, it’s normal to discover a pressure loss at the end of
the day when outside temperatures decrease.
WARNING
WHEN UNDER-INFLATED, THE BOAT WILL LACK RIGIDITY IN
NAVIGATION, WILL PERFORM POORLY AND AGE PREMATURELY.
IN CASE 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.
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.