Cold Water Diving; Regular After Dive Care And Maintenance - Aqua Lung MISTRAL Owner's Manual

AquaLung 1 GB 12/08/05

5. COLD WATER DIVING

WARNING
The long MP hose configuration (630 mm) is the one approved for cold water diving
according to the EN 250 standard.
To avoid the risks of ice formation in the regulator when diving in cold water (water
temperature below 50ºF / 10°C), follow at least these recommendations:
1 - Protect your regulator against any accidental entry of water into the 1st or 2nd stages.
2 - Protect your set from cold before the dive. In particular, keep your regulator and its
accessories in a warm dry place.
3 - Make your pre-dive checks in a warm dry place, even if it means doing this before
going to the dive site.
4 - Check that there is no water in the inhalation hose. Unscrew the inhalation screw
connection and look inside.
5 - If the air is cold, avoid breathing from the regulator before entering the water.
6 - Avoid removing the regulator from your mouth during the dive, or at the surface.
This will avoid the possibility of cold water entering the mouthpiece or the corrugated
hoses.
7 - As far as possible, avoid excessive effort during the dive.
8 - Have your filling station confirm that the air used for filling cylinders is dry and that
it meets the EN 12021 standard for breathing air.
9 - Avoid allowing your regulator to free flow by taking it from your mouth during the dive.

6. REGULAR AFTER DIVE CARE AND MAINTENANCE

Regular care before and after every dive will help increase the life of your regulator. You
can help by following a few simple, but important, maintenance procedures each time you
use your regulator.
The regulator should be rinsed as soon as possible after each dive while it is still attached
to the cylinder. This helps prevent water or dust entering your regulator.
1. Rinse the regulator, taking care to ensure that water enters the inside of the 2
housing.
WARNING
If you use a garden hose, do not use a high-pressure nozzle as this could damage the
diaphragm or the internal valves.
2. Hold the mouthpiece uppermost and pour water into the mouthpiece so that it circulates
through the exhalation circuit of the regulator. Water will exit from the cavities in the
2 nd stage housing.
3. Close the cylinder valve completely.
4. While watching the submersible HP gauge, inhale and exhale from the mouthpiece.
When the gauge indicates 0 and no further air comes from the mouthpiece, release it.
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Regulator Owner's Manual
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