BAR822/Manual Helium Escape Valve BAR833/Manual Helium Escape Valve
SCREW CHRONO BUTTON
CHRONOGRAPH/START and ST OP
SCREW CHRONO BUTTON
CALENDAR ADJUSTMENT
SCREW CHRONO BUTTON
CHRONOGRAPH/START and STOP
SCREW CHRONO BUTTON
CALENDAR ADJUSTMENT
SCREW CROWN/OPEN
HOUR ADJUST MENT
HOUR ADJUSTMENT
SCREW CROWN/OPEN
CHRONOGRAPH/START POINT
CHRONOGRAPH/START POINT
HELIUM ESCAPE VALVE
SCREW CHRON O BUTTON
HELIUM ESCAPE VALVE
ALWAYS MUST BE CLOSED POSITION
SCREW CHRONO BUTTON
ALWAY S MUST BE CLOSED POSITION
How to use the helium escape valve? (fig.2)
In its normal position (fig.2.1), the helium escape
valve is perfectly watertight thanks to the gaskets
During the decompression phase, unscrew the crown of the
valve in order to release the mechanism (fig.2.2). The valve is now
watertight from the outside. As the interior pressure becomes
greater than the exterior pressure, it pushes the gasket (A) out of
its seating, thus releasing the gas (fig.2.3). Once the pressure is
equalised, gasket (A) returns to its original position, pushed by the
SCREW CHRONO BUTTON
SCREW CROWN/CLOSE
HELIUM ESCAPE VALVE
(B), but it is not functional, since it is screwed down. spring (C) (fig.2.2).This operation is automatically repeated several
times during the decompression phase. Once atmospheric
pressure is reached, screw down the crown of the valve (fig. 2.1).
Note: Even if the valve is unscrewed, we strongly recommend that
the valve remains screwed down whenever the watch is immersed
in water, the watch is still water-resistant to a relative pressure of
in water, the watch is still water-resistant to a relative pressure of
5 Bar (50 metres). However, complete water-resistance tothe dial
depth can only be achieved with gasket (B) andthe valve in the
screwed down position.
Automatic helium escape valve: if your watch is equipped with an
automatic helium escape valve, no manipulation is required.
NOTE: Automatic helium escape
valve: if your watch is equipped
with an automatic helium escape
valve, no manipulation is required.
CALENDAR ADJUSTMENT
HOUR ADJUSTMENT
SCREW CROWN/OPEN
SCREW CHRONO BUTTON
