Bedienungsanleitung Cressi Edy (Seite 23 von 50) (Englisch)

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Depth

0 ft - 19.3 ft.

19.7 ft. - 58.7 ft.

segments

0.0 - 12.7 ft./min

0.0 - 19.3 ft./min

0.0 - 25.9 ft./min

segments

13.1 - 19.3 ft./min

19.7 - 25.9 ft./min

26.2 - 39 ft./min

segments

19.7-25.9 ft./min

26.2-39 ft./min

39.4-52.1 ft./min

segments

26.2 ft./min (SLOW)

39.4 ft./min (SLOW)

16.4 ft./min (SLOW)

212

which is exceeding the maximum depth allowed by the mix-

ture used. As already seen, the PO2 limit value is set by the

diver within a range between 1.0 bar and 1.6 bar. consi-

ders the 1.6 bar value as the partial pressure maximum

allowable limit and, according to the used mixture, automati-

cally signals the maximum depth which may be reached.

Remember that, even by using air, you may reach the oxygen

toxicity level. Such limit varies according to the PO2 value set.

is preset on a value of 1.4 bar whose corresponding

maximum depth is, by air, 184 ft. Of course, it is possible to set

the computer on other PO2 values, up to a maximum of 1.6

bar, is therefore equipped with two kinds of PO2 alarm:

1 By reaching the limit depth relating to the set PO2 (from

1.0 bar to 1.6 bar), an alarm starts sounding for 15

seconds, while the display starts flashing, showing the

(PO2) icon (picture 17), and, at the left top, the reached set

PO2 limit value.

2 A second alarm will start when the diver reaches the

depth corresponding to a PO2 of 1.6 bar, lasting again for

15 seconds. The display will also flash, the diver must not

go beyond this warring depth limit.

Both alarms will be entered in the Logbook.

Related topics:

• 3.1. - Air dive.

• 3.2. - Hyper-oxygenated Nitrox mixture dive.

• 3.3.1. - Partial pressure setting PO2

• 4.2. - Dive logbook (LOG).

3.4. – Curve dive.

3.4.1. – Ascent rate.

Cressi-sub computer’ s algorithm considers different

ascent rates according to the depth. The rate is shown on

the display by a segmented indicator at the right bottom,

which works according to the following table:

If during surfacing, the maximum allowed ascent rates are

exceeded, the display will show several segments, showing

the ascent rate increasing level. Moreover, an alarm will start

sounding and the display (picture 18) will show a

flashing (SLOW) icon. The segmented indicator will flash as well,

showing the ascent rate and the current depth value.

In this situation, surfacing must be stopped until the (SLOW) icon

disappears and the computer shows its normal display.

 DANGER: surfacing too fast dramatically increases the

risk of decompression sickness! Cressi-sub always

recommends a safety stop at the end of each dive, lasting

about 3-5 min at 10-20 ft., which will be assisted by the

computer (see chapter 3.4.2.)

WARNING: do not engage in a follow up dive after a sur-

face interval if the (SLOW) icon has been on! The computa-

tions for the next dive might be invalidated by exceeding

the maximum ascent rate.

EDY.qxd:EDY Manuale2006-2.qxd 20-06-2008 11:51 Pagina 212

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