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English
SAFETY CONSIDERATIONS
You must carefully read and understand this entire manual before using your Galileo.
Diving has many inherent risks. Even if you follow the instructions of this manual in a careful
manner, it is still possible that you may be seriously injured or die from decompression
sickness, oxygen toxicity or some other inherent risk of scuba diving with Nitrox or
compressed air. Unless you are fully aware of these risks and are willing to personally accept
and assume responsibility for those risks, do not use Galileo.
Guidelines for the use of Galileo:
The following guidelines for using Galileo are derived from the latest medical research and
the recommendations of the American Academy of Underwater Sciences for diving with
diving computers.
Following these guidelines will greatly increase your safety while diving, but cannot guarantee
that decompression sickness or oxygen toxicity will not occur.
• Galileo is designed for dives with compressed air (21% O
2
) and Nitrox (22 to 100% O
2
)
only. Do not use Galileo for dives made with other mixed gases.
• It is absolutely necessary to check the set mixture before each dive and to compare it to
the gas mixture currently used. Always remember: setting an incorrect mixture carries an
inherent risk of decompression sickness and/or oxygen toxicity! Maximum deviation from
the measured mixture must not exceed 1% O
2
. An incorrect gas mixture can be lethal!
• Only use Galileo with open circuit breathing systems.
• Only use Galileo for diving with an independent breathing apparatus. Galileo is not
designed for long term exposures with Nitrox.
• Always observe the visual and audible alarm signals. Avoid situations of increased risk
which are marked with a warning sign in this operating manual.
• Galileo has a ppO
2
warning. The default limit is set at 1.4bar ppO
2
max. It can be
changed between 1.2 and 1.6bar.
• Frequently check the “oxygen clock” (CNS O
2
). Ascend and fi nish the dive if the CNS O
2
exceeds 75%.
• Never dive deeper than the Maximum Operating Depth (MOD) pertinent to the gas
mixture in use.
• Always check the diving limits considering the oxygen content and standard sports
diving procedures (decompression sickness, oxygen toxicity).
• In accordance with the recommended maximum diving limit of all instructional agencies,
do not dive deeper than 40m/130ft.
• The danger of nitrogen narcosis has to be taken into consideration. Galileo gives no
warning about this.
• On all dives, with or without dive computer, make a safety stop for at least 3 minutes at
5m/15ft.
• All divers using dive computers to plan dives and indicate or determine decompression
status must use their own computer, which they take with them on all dives.
• If Galileo fails at any time during the dive, the dive must be terminated, and appropriate
surfacing procedures (including a slow ascent and a 3 to 5 minute safety stop at
5m/15ft) should be initiated immediately.
• Comply with the ascent rate and carry out any decompression stop required. If the
computer should fail for any reason, you must ascend at a rate of 10m/30ft per minute
or less.
• On any given dive, both divers in a buddy pair must follow the most conservative dive
computer for that particular dive.
• Never dive without a buddy. Galileo does not substitute for a dive buddy.
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