PRECAUTIONS
WARNING:
you should use the regulator only after you have passed a diving training centre that authorided to issue diving certificates. To use the
regulator properly, the following precautions must be taken.
•
The regulator must be used in strict compliance with the instructions set out in this manual.
•
The regulator must be usedonly for the purposes indicated in this manual.
•
The regulator must be serviced and repaired only by approved service centres at the regular intervals specified in the warranty. In order to
ensure operating efficiency, use only manufacturer-approved spare parts.
•
If the above conditions are not complied with the responsibility for any faults lies with the owner or user of the regulator.
APPLICATIONS
All regulators of Aerotecnica Coltri
®
S.p.A. have two stages. The first stage uses a piston or a diaphragm and the secon one uses an inlet valve.
The first stage is connected to the second stage by a low-pressure hose. In two-stage regulators the high-pressure air in the cylinders is reduced in
the first stage to about 10 Bar above ambient pressure. Ambient pressure varies according to diving depth. The air that reaches the second stage
is immediately available to the inlet valve but is supplied only when the diver breathes is slightly.
WARNING:
the regulator that are the subject on this manual is certified for use in dives down to a maximum depth of 50 metres.
PRELIMINARY CHECKS
Before each dive, check all the regulator functions and check the parts of wear. If faults are found, do not use the regulator but
get it checked by an approved service centre. Connect the first stage of the regulator to the cylinder using the fitting system that is
appropriate for the cylinder valve: a standard yoke assembly or a DIN screw connector for the cylinders using a DIN valve. With
yoke assemblied, the O-ring seal is positioned on the cylinder’s valve. With a DIN connector the O-ring seal is positioned at the
end of the connecting system. Check the O-ring for wear and replace it if necessary.
USE
Before opening the cylinder valve, try to breathe in throught the second stage mouthpiece. If is it impossible to do so the inlet valve and the exhaust
diaphragms are working correctly. If leaks occur, do not dive and contact a specialised service centre. Slowly open the cylinder valve and try to
breath in through the mouthpiece of the second stage, press the exhaust button of the middle of the cover of the second stage. The regulator must
regain its balance without leaks. Any air leaks mean that the regulator is not working correctly and must be repaired.
WARNING:
EN 250/A1:2006 : The regulator complies with the standard EN250 but is not designed for more than one user simultaneously. If the
regulator is configured and used by more than one user at the same time, its water and breathing performances might not be compliant with the
requirements of the standard EN250.
COLD WATER DIVING
Avoid using the regulator in water below + 10° C. You must also have been awarded a certificate in cold-water diving before using the regulator.
If the regulator is used in water below 0° C do not use the regulator out of the water.
MAINTENANCE
All regulators of Aerotecnica Coltri
®
S.p.A. are made from material that is suitable for use in seawater and each parts is protected from oxidation
and has been approved for continuos use over many years. The regulators should nevertheless be tested every year at specialist centre.
CLEANING
After use, use the air left in the cylinder to dry the protective cap, to prevert water entering in the first stage. Protect the sintered filter by covering
it with the protective cap and rinse out the regulator with fresh water (not under pressure).
WARNING:
during rising, do not press the manuale purge bottom of the second stage to prevent water from entering through the inlet valve. Leave
the regulator to dry in a dry place but do not expose to direct sunlight. Place it in a temperature that is protected from high temperatures and make
sure that the low-pressure hose that connects the first stage to the second stage uses a curve radius of at least 150 mm.
LUBRICATION
Only the O-rings require occasional lubrication. They must be lubricated with silicone oil and greases.
WARNING:
under no circumstances use normal (non-silicone) oils because they could damage the regulator parts. Do not use silicone lubricants
for silicone parts (diaphragm, mouthpiece, valve seat plug) because such lubricants would cause irreparable damage.
Do not use alchol or solvents to clean plastic or rubber components.
