Poseidon SE7EN+ User Manual Chapter 1 Page 36
Figure 1-70. Make sure the OPV is in the maximum closed position.
When your unit has been assembled, go through the Pre-Dive checklist located in chapter 2
on page 49.
DANGER:
Placing weights between the counterlung and counterlung shell
affects the work of breathing and hydrostatic balance. Doing so is
dangerous and can cause serious injury or death.
WARNING:
Because CO2 exists naturally in the atmosphere, Sofnolime 797
openly exposed to the atmosphere will expire in 24
hours. Use of the absorbent material after such exposure may
lead to high PCO2 during a dive.