Technical information

14
3 Preparation for the dive
UWATEC
®
Smart dive computers
3.1 Setting the gas mixture
Before every dive and after changing the tank, make sure that the setting of the
gas mixture corresponds to the current mixture used. An incorrect setting causes
Smart to miscalculate this particular dive. If the fraction of oxygen is set too low
this can lead to oxygen poisoning without warning.
If the value is set too high
decompression sickness may occur.
Inaccuracies in the calculations are carried
over to repetitive dives
.
To set the gas mixture, Smart must be in user mode.
1. Bridge contacts B and + or B and – until the symbol for the setting of the
O
2
mixture appears.
2. Confirm that you wish to change the displayed oxygen fraction by bridging
B and E.
3. Change the oxygen fraction in increments of 1% by bridging contacts B
and + to increase or B and – to decrease (21-100%).
4. Confirm the selected percentage with B and E.
Without confirmation the display will disappear after 3 minutes and your
entries will not be accepted.
The time to reset the O
2
% mix to air can be set with SmartTRAK between 1
and 48 hours or to "no reset" (default).
3.2 Setting the MB level
See chapter IV, -> 24.
3.3 COM Additional preparation for the dive with Smart COM
The following description of the preparation of a dive is based on the assumption that the high pressure hose
is correctly mounted on the HP outlet and Smart COM is connected with the HP hose (-> 10).
If the high pressure hose is not correctly mounted, it will not perform
properly and serious injury or death may result.
1. Mount the regulator together with the high pressure hose on the tank.
2. If present, check the reserve valve of your tank, the reserve valve must be
open.
3. Open the valve and check the tank pressure (after approx. 10 sec.). If the
pressure is insufficient, change the tank.
…
DIVE TIME
DEPTH
DECO INFO
MAX.DEPTH
%
+
–
DIVE TIME
DEPTH
DECO INFO
MAX.DEPTH
%
…
3.4 Inspection
Make an inspection before each dive:
1. Switch on Smart (B-E).
2. Check the test display: are all the elements of the display activated? Use
Smart only if all elements of the display are activated.
3. COM Check the connections and instruments for leaks. Never dive with
leaky equipment!
DIVE TIME
DEPTH
DECO INFO
MAX.DEPTH
NO
NO
CNS O
2
%
h
LOG
DESAT
ft
h
m
DECO
STOP
NO STOP
LEVELSTOP
S
L
O
W
%
SPEED
%
C
F
TANK DATA
RBT
bar
psi
COM
TANK DATA
bar
WARNING
WARNING
WARNING
WARNING