SUUNTO HELO2 User Manual
Page 7
WARNING
DIVES THAT REQUIRE DECOMPRESSION STOPS ARE NOT RE-
COMMENDED. YOU SHOULD ASCEND AND BEGIN DECOMPRES-
SION IMMEDIATELY WHEN THE DIVE COMPUTER SHOWS YOU
THAT A DECOMPRESSION STOP IS REQUIRED! Note the blinking
ASC TIME symbol and the upward pointing arrow.
WARNING
USE BACK-UP INSTRUMENTS! Make sure that you use back-up
instrumentation, including a depth gauge, submersible pressure gauge,
timer or watch, and have access to decompression tables whenever
diving with the dive computer.
WARNING
PERFORM PRE-CHECKS! Always activate and check the device
before diving in order to ensure that all Liquid Crystal Display (LCD)
segments are completely displayed, that the device has not run out
of battery power, and that the oxygen, altitude, personal, Safety/Deep
Stop, and RGBM adjustments are correct.
WARNING
YOU ARE ADVISED TO AVOID FLYING ANY TIME THE COMPUTER
COUNTS DOWN THE NO-FLY TIME. ALWAYS ACTIVATE THE
COMPUTER TO CHECK THE REMAINING NO-FLY TIME PRIOR
TO FLYING! Flying or traveling to a higher altitude within the no-fly
time can greatly increase the risk of DCI. Review the recommendations
given by Divers Alert Network (DAN) in Section 7.4. Flying after diving.
WARNING
THE DIVE COMPUTER SHOULD NEVER BE TRADED OR SHARED
BETWEEN USERS WHILE IT IS IN OPERATION! Its information will
not apply to someone who has not been wearing it throughout a dive,
or sequence of repetitive dives. Its dive profiles must match that of
the user. If it is left on the surface during any dive, the dive computer
will give inaccurate information for subsequent dives. No dive com-
puter can take into account dives made without the computer. Thus,
any diving activity up to four days prior to initial use of the computer
may cause misleading information and must be avoided.
WARNING
DO NOT EXPOSE THE SUUNTO HelO
2
'S OPTIONAL PRESSURE
TRANSMITTER TO ANY GAS MIX CONTAINING MORE THAN 40%
OXYGEN! Gas with greater oxygen content presents a risk of fire or
explosion and serious injury or death.
WARNING
DO NOT DIVE WITH A GAS IF YOU HAVE NOT PERSONALLY
VERIFIED ITS CONTENTS AND ENTERED THE ANALYZED VALUE
INTO YOUR DIVE COMPUTER! Failure to verify cylinder contents
and enter the appropriate O
2
% and He% into your dive computer will
result in incorrect dive planning information.
WARNING
THE DIVE COMPUTER WILL NOT ACCEPT FRACTIONAL PER-
CENTAGE VALUES OF OXYGEN CONCENTRATION. DO NOT
ROUND UP FRACTIONAL PERCENTAGES! For example, 31.8%
oxygen should be entered as 31%. Rounding up will cause nitrogen
percentages to be understated and will affect decompression calcula-
tions. If you want to adjust the computer to provide more conservative
calculations, use the personal adjustment feature to affect decompres-
sion calculations, or reduce the PO
2
setting to affect oxygen exposure.
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