2
Safety considerations
I UWATEC
®
Aladin
®
dive computers
You must carefully read and understand this entire manual before using your Aladin
®
PRIME
or Aladin
®
TEC
.
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 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 Aladin
®
PRIME
or Aladin
®
TEC
.
Guidelines for the use of Aladin
®
PRIME
and Aladin
®
TEC
:
The following guidelines for using Aladin
®
PRIME
and Aladin
®
TEC
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.
• Aladin
®
PRIME
and Aladin
®
TEC
are designed for dives with Nitrox (Aladin
®
PRIME
max.50%O
2
, Aladin
®
TEC
max.100%O
2
) and compressed air (21%O
2
) only. Do not use Aladin
®
PRIME
or Aladin
®
TEC
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 mix-
ture currently used. Always remember: setting an incorrect mixture carries an inherent risk of decom-
pression 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 Aladin
®
PRIME
and Aladin
®
TEC
with open circuit breathing systems. Aladin
®
PRIME
and Aladin
®
TEC
must be set for a determined gas mixture.
• Only use Aladin
®
PRIME
and Aladin
®
TEC
for diving with an independent breathing apparatus. Aladin
®
PRIME
and Aladin
®
TEC
are not designed for long term exposures with Nitrox.
• Always observe the visual and audible alarm signals. Avoid situations of increased risk which are mar-
ked with a warning sign in this operating manual.
• Aladin
®
PRIME
and Aladin
®
TEC
have a ppO
2
warning. The default limit is set at 1.4 bar ppO
2
max.
On Aladin
®
TEC
it can be changed between 1.2 and 1.6 bar.
• Frequently check the "oxygen clock" (CNS O
2
). Ascend and finish 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 40 metres/130 feet.
• The danger of nitrogen narcosis has to be taken into consideration. Aladin
®
PRIME
and Aladin
®
TEC
give
no warning about this.
• On all dives, with or without dive computer, make a safety stop for at least 3 minutes at 5 metres (15 feet).
• 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 Aladin
®
PRIME
or Aladin
®
TEC
fail at any time during the dive, the dive must be terminated, and appro-
priate surfacing procedures (including a slow ascent and a 3 to 5 minute safety stop at 5 metres /15 ft)
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 (30 feet) 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. Aladin
®
PRIME
and Aladin
®
TEC
do not substitute for a dive buddy.
• Only make dives that are appropriate to your level of dive training. Aladin
®
PRIME
and Aladin
®
TEC
do
not increase your knowledge of diving.
• Always dive with back-up instruments. Make sure that you always use back-up instrumentation inclu-
ding a depth gauge, submersible pressure gauge, digital bottom timer or dive watch, and have access
to decompression tables whenever diving with a dive computer.
WARNING