Poseidon SE7EN+ User Manual Appendix 3 Page 94
WARNING:
Always replace the CO
2
Absorbent cartridge with a new, repacked
absorbent cartridge whenever the oxygen cylinder is re-lled. This
will minimize the risk of CO
2
poisoning!
Intact Breathing Loop Verication
The SE7EN is tested for CO2 duration in two ways with the following with test setup according to
EN14143:2013, a respiratory minute volume of 40 liter/minute in cold water 4° Celsius and a CO2
rate of 1.6 liter/minute.
Scrubber duration standard test result:
A 40 meter static test – 130 min
Note: A static test is a simulated dive performed in a pressure chamber where the depth is
constant, i.e. there is no descent nor ascent in the dive.
Scrubber duration result at non-standard dive prole:
A 100m dive prole with a bottom time of 10 minutes – 200 min
Inspect all breathing-hose connections to ensure that they are properly attached. The attachment
nuts should be hand tight and the nuts should be screwed down ush against the receiver
manifolds in all eight locations (two at the top of the gas processor; four at the shoulder ports;
and two at the mouthpiece). Also at this time, make sure the right counterlung dump valve is
fully closed (turned all the way clockwise). This is important for the pre-dive routine that automati-
cally follows power-up.
CO
2
Absorbent Cartridge - Repackable Scrubber
Guidelines for Different Dive Plans
Follow the procedures described in Chapter 1 for the installation of the Repackable
Scrubber Cartridge, Sofnolime 797. When conducting a repetitive dive, it’s critical to keep
track of the hours of personal use for the cartridge once installed. The absorbent cartridge
must be changed whenever the oxygen cylinder is re-lled. While many people experience a
strong reaction to CO
2
buildup (as would result from diving with a depleted or missing
cartridge) in the form of un-naturally rapid breathing rate, disorientation, and the onset of an
intense headache, some people do not experience these symptoms. Do not risk CO
2
poisoning! Change the cartridge every 2 hours and 10 minutes* of use or whenever the
oxygen cylinder is re-lled, whichever comes rst.
*) Tested static 40m with 797 Sofnolime in cold water 4° Celsius at a breathing rate of 40 liter/
minute RMV and a CO
2
production rate of 1.6 liter/minute.
Mushroom Valve Test
Rubber Mouthpiece Check
Remove the mouth peice at put it in CC position. Breath in and block one side of the hose con-
nections. Here you shall be able to feel the blocking function of mushroom valves on each side.
Also make a visual inspection of the silicone rubber. It should look fresh and not brown/yellow and
dried out.
Start by visually inspecting the mouthpiece rubber: no cracks or small holes on the top or sides.
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