Cressi SUB series, User Manual

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20 English
by pulling the ID hose ( Fig. A ), then using the deflation
valve or the lower overpressure valve, if you descend
head down.
Now, you can descend at a descending rate that
increases in proportion to the water pressure
compressing you.
To descend slowly you can inflate. By shortly lightly
pressing the inflation button, you can modify the descent
rate and then progressively adjust yourself to the
increasing depth.
During the dive you can compensate buoyancy in
accordance with the depth and tank lightening, due to
the air consumption.
To ascend you must inflate, so that a lightly positive
buoyancy can be obtained.
In this case, the ascending rate increases in accordance
with the pressure and you must operate the deflation
systems to compensate and avoid a too rapid ascent.
WARNING: IT IS EXTREMELY DANGEROUS FOR
THE DIVER TO ASCEND TOO FAST.
AVOID OVER INFLATING THE JACKET, AND
ASCEND WITH A NEUTRAL BUOYANCY, CON-
TINUOUSLY ADJUSTING BUOYANCY.
USE OF THE EQUIPMENT AND RISK
EVALUATIONS
Before using a diving equipment you must follow a
recognized diving course and obtain a qualification.
You must be trained and in a good state of health.
Before every dive you must accurately consider the
environmental conditions and the psychophysical state
of the diver.
It is recommended to avoid the dive, when even only one
of the above conditions becomes dangerous.
The environmental dangerous conditions can be the sea
situation, the sea currents, the low water temperature,
the poor visibility.
The physical dangerous conditions can be a bad state of
health, an emotional or physical stress situation, a lacking
training, tiredness, digestion.
The materials and the design of CRESSI-SUB equipment
assure a totally safe use.
Libretto 25/10/05 25-10-2005 12:53 Pagina 20