Alarm indication | Alarm reason |
Three beeps with a one second interval for 24 seconds. Maximum depth blinks.
Three beeps with a one second interval for 24 seconds. Dive time blinks.
The selected depth (3 - 120 m / 10 - 394 ft) is exceeded.
The fixed maximum depth (120 m / 394 ft) is exceeded.
The selected dive time (1 - 999 min) is ex- ceeded.
NOTE
WARNING
When the backlight is turned OFF, it does not illuminate when an alarm is activated.
WHEN THE OXYGEN LIMIT FRACTION INDICATES THAT THE MAXIMUM LIMIT IS REACHED, YOU MUST IMMEDIATELY TAKE ACTION TO REDUCE OXYGEN EXPOSURE. Failure to take action to reduce oxygen exposure after the warning is given can rapidly in- crease the risk of oxygen toxicity, injury, or death.
5.7. Error conditions
The dive computer has warning indicators that alert you to react to certain situations that would significantly increase the risk of DCI. If you do not respond to its warnings, the dive computer will enter an Error mode, indicating that the risk of DCI has greatly increased. If you understand the dive computer and operate it sensibly, it is very unlikely you will ever put the instrument into the Error mode.
Out of calculation limits
Suunto uses state of the art memory and microprocessors, however, there are limitations to the memory capacity of decompression calculations. Therefore Suunto must limit the maximum saturation of tissues on Suunto HelO2 and limit the maximum bottom times on dives performed using the dive computer. The bottom times include decompression calcu- lation. While it is highly unlikely that the following bottom times are confronted by open- circuit divers, it is important to warn you of their possibility.
The same limits are used in the Suunto Dive Planner and so repetitive dives will be checked while planning a dive because a dive plan must be created in any case.
Table 5.2. Possible decompression dive times |
|
| |||
Gas mix | O2%/He% | Depth | Bottom time | Ceiling | First deep- |
|
|
|
|
| stop |
Tx | 20/35 | 60 m | 250 min | 33 m | 46 m |
Tx | 15/50 | 80 m | 260 min | 50 m | 65 m |
Tx | 12/60 | 100 m | 120 min | 61 m | 80 m |
Tx | 10/60 | 120 m | 90 min | 73 m | 96 m |
Descent at the rate of 10 m/min is included in the time. The times allow for a safe ascent using the bottom gas all the way to the surface without exceeding tissue pressures.
If a diver violates these limits, the dive computer goes to an error mode and the rest of the dive must be conducted using the diveplan on the slate.
16
