KiSS ORCA SPIRIT, Manual

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45 MSL 72.161 Jetsam/Orca Spirit manual R.5
WORK OF BREATHING
There are several things that can cause a high work of breathing.
1.
Too much gas in the loop. This can happen if the loop has gas in it, the mouthpiece is closed and then the diver
puts the mouthpiece in his mouth and blows more gas into the loop. The exhaust valve will probably not release
any gas if the diver is on the surface. It will feel like you can not get a full breath and the breathing will be difficult.
Dump part of the loop (exhale out of your nose). If this is the cause, you will no ce the difference immediately.
Also, if this happens, it won’t be possible to trigger the ADV. This can also happen if the ADV is faulty and it is leak‐
ing diluent gas into the loop.
2.
Twisted counterlung’s. If the counterlung’s are twisted, or bunched up, they will not be able to expand properly
and breathing will be restricted.
3.
Counterlung’s not pulled through wing/harness properly. If the counterlung’s are not properly routed, it is likely
that they could be restricted in some manner. This will cause the breathing to be restricted.
4.
Waist strap is too ght. If the waist strap is cinched down to far, it will restrict the lungs from properly infla ng.
Loosen the adjustment strap on the lung’s and they will properly inflate.