Poseidon SE7EN+ User Manual Chapter 1 Page 33
Next, remove the black top-of-cartridge interface cap (Figure 1-59), and clean, disinfect, dry,
and stow that component. Note that this cap is tted with two o-rings – a top-mounted axial
o-ring that seals to the interior top of the cartridge housing, and a radial o-ring that seals to the
top receiver pocket on top of the CO
2
absorbent cartridge. Replace these o-rings if cuts or
gouges are present.
Remove the absorbent cartridge (Figure 1-60) from the base plate and properly dispose the
content of the cartridge.
With the cartridge removed, inspect the cartridge housing end plate (Figure 1-61) for scratches
and gouges to any of the o-rings or o-ring sealing surfaces. Replace o-rings if required and
re-lubricate. Lift up and remove (Figure 1-61) the bottom annular sponge water trap. This
sponge should be relatively dry when diving in relatively warm water, but may be damp or
soaked when diving in cold water. Improper use of the rebreather may also allow water to enter
the breathing loop, and possibly reach the cartridge housing. While the water diversion mani-
folds will trap most of the water, acrobatic swimming (rolls, ipping from head down to head up
orientation etc) can defeat the system if the user is not paying attention, causing water to reach
the sponge.
It is good practice to rinse, disinfect, and dry the lower absorbent sponge following a dive. Any
disinfectant solution that doesn’t have a negative effect on plastics and/or rubber can be used
for this purpose. Poseidon recommends using a disinfectant called Gigasept™ or a disinfec-
tant called Virkon.
At this point it is time to load a fresh Scrubber Cartridge.
DANGER: Dangerous levels of carbon dioxide (CO
2
) can cause
symptoms that include, but are not limited to, rapid breathing,
severe headache, tunnel vision and disorientation. High CO
2
levels
can also increase the potential for oxygen toxicity. Diving a closed-
circuit rebreather with an expended CO
2
absorbent cartridge
could lead to serious injury or death.When in doubt, switch the
mouthpiece to open-circuit mode and end the dive immediately.
1/3
2/3
3/3
1
2
3
4 5
5 mm
Filling Sofnolime 797
total max 2.5 kg
When packing with filling material, read
carefully and follow the manufacturer’s
safety instructions.
The scrubber is tested in accordance
with the EN14143:2013 with
the Poseidon SE7EN+ rebreather.
Scrubber material endurance depending
on temperature and metabolic
oxygen consumption.
Scrubber endurance at static depth
of 40m, 4° Celsius, CO2 production of
1.6l/min STPD, 40 RMV (2 liter tidal
volume), using the Poseidon user
repackable scrubber with
Sofnolime 797 grade (1-2,5mm).
Duration measured with the above
mentioned conditions until the
PPCO2 of the inhaled gas reaches
5mbar; 130 minutes.
Only use Sofnolime 797
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