Owner`s manual

SWITCHING GAS MIXES (NORM only)

During NORM Dives, the FO2 calculations/displays can be switched from Gas 1 to 2.

> Switching Gas cannot be performed while on the surface.

> Every dive begins with Gas 1 and 10 minutes after surfacing from a multiple gas

dive, operation defaults to the Gas 1 FO2.

> Access to Gas Switching screens can only be accomplished during the time that a

NORM Dive Main screen is being displayed and cannot be performed during the

time that an Alarm is sounding.

NOTE: If a Switch to a new Gas mix would expose the diver to a

prohibitive PO2 level of 1.60 ATA or greater, the Audible Alarm will

sound and the graphics DO > NOt CHNG GAS will ﬂash on the display

(Fig. 81) until the Audible is silenced.

Due to the possibility that sufﬁcient air may not be available

in the Switch From tank to complete the dive, the Switch to the

prohibitive Mix is still allowed.

> If the Switch is made to the prohibitive Mix, the High PO2

Alarm will activate.

> If in Deco the graphic PO2 will ﬂash in place of TAT until PO2

decreases below 1.60, then TAT will be restored.

Switching of Gas Mixes can only to be performed during the

time that a Gas Switch Preview screen is being displayed.

Fig. 81 - DO NOT CHANGE

GAS ALARM