User`s guide

Puck Air Dive computer
16
Q : What is a Deepstop?
A: To reduce the chances of micro-bubbles
forming and growing, during
decompression-stop dives or dives very close
to the no-decompression limits, Puck Air
will prompt for a series of Deepstops of a
minute each at variable depths, as a function
of the dive profile. This is one of the special
characteristics of the RGBM Mares-Wienke
Algorithm.
Q : If I ascend above the depth for the Deepstop
can I go back down to do the stop?
A: If you surpass the Deepstop by more than a
meter (3 ft), the stop is cancelled.
Q : Why doesn’t the Deepstop icon appear
during the dive?
A: The Deepstop icon only appears for
decompression dives or dives close to the deco
limit.
Q : If I start my Deepstop and then go back
down what happens?
A: If you begin the Deepstop and then descend,
the countdown stops. It resumes when you
return to the Deepstop depth.
Q : Why doesn’t Puck Air turn off after a dive?
A: If the no-fly period has not expired, after
a dive Puck Air switches to Time mode and
shows information about the most recent dive.
Q : If I am in Predive with the hose inserted, can
I exit Predive to change the settings?
A: Even in Predive and when Puck Air is
reading the tank data, you can exit this mode
by pressing and holding the button and then
change the settings.
Q : If I am in DIVE, can I exit to change the
settings?
A: No.

WARNING
If the battery is replaced after a dive before
the desaturation time has gone to zero,
the residual nitrogen memory will be
cleared, and the RGBM calculations for
any previous dives aborted. The diver who
used the computer in the previous dive
must not dive for at least 24 hours.
MAINTENANCE
After diving in seawater it is recommended
that you rinse Puck Air with freshwater to
remove any salt residues. This operation
should be done with the Puck Air connected to
the hose.
Do not use chemical products; just put the
Puck Air under running water.
NOTE
With regard to downloading data from
the logbook to the PC, it is important that
the two pins located in the back near the
battery plug are carefully cleaned with
freshwater after every dive.
In the event of a malfunction, do not use the
instrument for diving and have it checked by an
authorized Mares service center. In any case,
every 2 years or after completing 100 dives, the
instrument must be serviced at an authorized
Mares service center.
•
NOTE
If you notice signs of moisture on the
inside of the plastic lens, take your
Puck Air to an authorized Mares service
center immediately. In any case, Mares
declines responsibility for any water
seepage resulting from an incorrect
battery replacement procedure.
 WARNING
If you notice any malfunction or water
seepage, bring your Puck Air to an
authorized Mares service center
immediately. It is strictly prohibited to
disassemble the computer. Doing so will
void the warranty.
 WARNING
The plastic lens is not immune to
scratches caused by improper use.
 WARNING
The plastic lens is protected by a plastic
lens cover that is easily replaceable
(Mares spare part Code 44200617).
STORAGE INSTRUCTIONS
Storage temperature: from -20 to +70° C
(-4/+158° F).
When replacing the hose be careful not to
damage it by folding it too far (bending radius
not less than 31 mm).
TRANSPORT INSTRUCTIONS
No special operations are required for transport.
It can be transported with the rest of your
equipment, but be careful to avoid violent blows
REPLACING THE BATTERY
Replacing the battery is a delicate operation,
and requires close attention. We suggest that
you visit an authorized Mares center. Mares
declines all responsibility for any damage
caused by replacing the battery.
NOTE
Do not discard the old battery in the
environment. Mares adopts a policy of
respect for the environment, and urges
use of the appropriate separated waste
collection service.

WARNING
Inspect the O-ring carefully, checking for
any signs of damage, tearing or warping.
If necessary, replace it with a new O-ring
(Mares spare part Cod. 44200654).
Unscrew the waterproof cover on the back of
Puck Air, rotating counter-clockwise.
Lift the cover, prying in the two grooves.
Remove the battery, paying close attention to
the proper polarity.
Insert a new battery, Lithium CR 2450, making
sure the polarity is correct.
Check the gasket in the cover.
Insert the cover onto Puck Air so that the icons
are correctly positioned.
Press the cover inward.
Turn clockwise, pressing the cover until the
icons are aligned.

WARNING
Mares reserves the right to refuse to
provide service under the warranty if the
maintenance instructions are not followed.
INSTRUCTIONS FOR CONNECTING PUCK AIR
TO THE HP HOSE
Puck Air is made up of two distinct elements: the
computer and the high pressure hose, which are
tested for an operating pressure of 300 bar.
The hose must be connected to the regulator’s
first stage before the latter is mounted on the
tank: if this operation is carried out when the
regulator is already assembled on the tank,
make sure that the tank valve is fully closed
and that the entire system is depressurized
by pressing the purge button on the regulator
second stage.
1) Locate the high-pressure ports on the
regulator first stage (refer to the instruction
manual of the regulator; the high-
pressure ports on the first stage may be
marked with the letters “HP” or with the
maximum pressure rating) and, following
the instructions, remove the plug from the
chosen port.
2. Remove the thread protection cap before
connecting the hose to the regulator first
stage.
3. Screw the hose fully into the high-pressure
port of the regulator first stage. Tighten
firmly but carefully, using a 14-mm hex
wrench; if you have a dynamometric wrench
available, apply a closing force of 8 N/m.
The Puck Air is ready for use.
Once the tank valve is open and the system is
pressurized, reclose the valve and make sure
there are no leaks, checking that the pressure
indicated by Puck Air is stable and does not
drop. If a drop in pressure is detected, do not
dive and double-check the entire system.
During the dive, remember to check the
residual air pressure frequently.
The Puck Air is equipped with a hose long
enough to avoid hindering the diver during use.
It is in any case recommended to secure
the instrument using the special fasteners
provided on the harness or BC. Protect
the instrument from knocks. The Puck Air
must only be used with CE-marked SCUBA
components.

WARNING
The Puck Air can only be connected and
subsequently disconnected from the
high pressure hose after depressurizing
the system. Therefore, if the computer
is assembled on the first stage of a
regulator that is already connected to a
tank, depressurize the group as described
above.
Before using, the user must carefully ensure
that the Puck Air is compatible with the
maximum working nominal pressure values
of the regulators on which the device will be
mounted.
The nominal working pressure for the Puck Air
is shown on the back of the case.
After assembling the Puck Air, slowly open the
tank control valve to avoid the “water hammer”