Hollis Explorer User Manual - page 51
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5. If the difference between the highest sensor and the lowest is greater
than 0.5bar then the system will inject gas for 1 second out of every 3 as a
fail-safe. This will cause an ASCEND NOW alarm.
Mandatory Diver Action: Ascend to surface on the rebreather. Rebreather
switches to Fail-Safe Mode.
Preferred Diver Action: Open circuit Bailout, ascend to surface.
6. If the average of all sensors (not removed from the averaging by rules 1,
2, 3 or 4) is greater than 1.6 bar when diving then an ASCEND NOW alarm
will be displayed.
Mandatory Diver Action: Ascend to surface on the rebreather.
Preferred Diver Action: Open circuit Bailout, ascend to surface.
7. If the average of all sensors is less than 0.17 or greater than 2.0 when
diving then a BAILOUT alarm will display.
!
NOTE: This alarm will supersede those in rules 1, 2, 3, 4, 5 and 6.
Mandatory Diver Action: Open circuit Bailout to surface
8. If two or more sensors are removed from the averaging (because of
rules 1, 2, 3 or 4) then the system will inject gas for 1 second out of every 3
as a fail-safe. This will cause an ASCEND NOW alarm.
Mandatory Diver Action: Ascend to surface on the rebreather. Rebreather
switches to Fail-Safe Mode.
Preferred Diver Action: Open circuit Bailout, ascend to surface.
EXAMPLES
1. Sensor 1 = 0.65bar, sensor 2 = 0.60bar, sensor 3 = 0.70bar.
→ All sensors used
2. Sensor 1 = 0.3bar, sensor 2 = 0.60bar, sensor 3 = 0.70bar.
→ Sensors 2 and 3 still used
3. Sensor 1 = 0.3bar, sensor 2 = 0.60bar, sensor 3 = 0.9bar.
→ Failsafe – inject for 1 second out of every 3. {Sensors are great-
er than 0.5 apart across all 3 sensors (0.3 to 0.9)}.
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