Aqua Lung i550C, Owner'S Manual

Page: 16 / 59

Doc. 12-7909-r04 (10/31/18)
16
DIVE FEATURES
© Aqua Lung International, Inc. (2018)
AUDIBLE ALARM
While operating in Dive or Gauge mode, the audible alarm will emit 1 beep per second for 10 seconds when
alarms strike, unless it is set OFF. During that time, the audible alarm can be acknowledged and silenced by
pressing the SEL button. An LED Warning Light, on the front of the housing, is synchronized with and flashes as
the audible alarm sounds. It will turn off when the alarm is silenced. The audible and LED alarm will not be active
if the audible alarm is set to OFF (Set AL Menu setting).
Situations that will activate the Dive/Gauge 10 second Alarm include -
** Items activate only in Dive mode.
• Descent deeper than the Depth Alarm set point selected.
• Dive Time Remaining at the set point selected**.
• Elapsed Dive Time at the set point selected.
• PO
2
at the set point selected**.
• High O
2
of 300 OTU (100%)**.
• N2 Bar Graph at the set point selected**.
• Ascent rate exceeds 9 MPM (30 FPM) for 8 seconds or more.
• Entry into Decompression Mode (Deco)**.
• Conditional Violation (above a required Decompression Stop Depth for less than 5 minutes)**.
• Delayed Violation (above a required Decompression Stop Depth for more than 5 minutes)**.
• Delayed Violation (a Decompression Stop Depth greater than 18 M/60 FT is required)**.
• Delayed Violation (Max Operating Depth of 100 m/330 ft is exceeded in Dive or 120 m/399 ft in Gauge mode).
A single short beep (which cannot be disabled) sounds when -
• After 10 minutes on the surface after the Violation dive.
During the following Dive mode situations, the 10 second continuous tone will be followed by a 5 second steady
beep that will not turn off when acknowledged -
• Ascent above a Decompression Stop for more than 5 minutes.
• Decompression requires a Stop Depth deeper than 18 m (60 ft) or deeper.
• On the Surface during a Conditional Violation.