Pressure - Zodiac Futura Manual De Instrucciones

The correct pressure for the main buoyancy tube, the damping buoyancy mechanisms and the
keel is 240 mb/3.48 PSI
If your boat is not equipped with an ACCESS pressure indicator, we recommend that you 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 buoyancy tube is sufficiently hard so that the cones
on the rear section of the buoyancy tube cannot be bent manually.
The ambient temperature of the air or the
water affects the internal pressure level of
the buoyancy mechanism proportionally:
Thus, 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 and 270 mb (green area).
RISK OF UNDERPRESSURE:
EXAMPLE: Your boat is exposed on a beach in the sun (temperature=50 °C) at the
recommended pressure (240 mb/3.48 PSI). When you launch it (temperature=20 °C), the temperature
and internal pressure of the inflatable compartments will drop simultaneously (up to 120 mb) and YOU
WILL THEN NEED TO REFLATE until you regain the millibars lost due to the difference between the
ambient air and water temperatures. A drop in pressure at the end of the day, when the outside
temperature is dropping, is 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.
NOTE:
Under-inflation causes improper flexing of the tubes which will cause
early aging.
RISK OF OVERPRESSURE
EXAMPLE: Your boat is inflated to its recommended pressure (240 mb/3.48 PSI) at the
beginning or end of the day (low outside temperature = 10 °C). Later in the day, your boat is exposed
in the sun on the beach or on a yacht deck (temperature = 50 °C). The temperature inside the
inflatable compartments may rise to 70 °C (particularly for dark buoyancy units), doubling the initial
pressure (480 mb). YOU WILL THEN NEED TO DEFLATE the boat to return to the recommended

pressure.

IF YOUR BOAT IS OVERINFLATED, THERE WILL BE UNDUE PRESSURE
ON THE INFLATABLE STRUCTURE THAT MAY RUPTURE IT.
CAUTION
IN CASE OF OVERPRESSURE
STANDARD VALVE (A):
Free some air by pushing on the
diaphragm (1) with a blunt object
(like a pencil). Beware not to
fold down the diaphragm.
EASY PUSH VALVE (B):
Release some air by pressing
the valve knob.
PRESSURE
Ambient Temperature
+1°C
-1°C
1
A
/ 10
9
Internal buoyancy
mechanism pressure
+4 mb / 0.06 PSI
-4 mb / 0.06 PSI
B
E
N
G
L
I
S
H