POSEIDON SE7EN+ - Tissue Tension Test (Test 40); Open Circuit Mouthpiece Position (Test 43); Chapter 2 Page 43

Poseidon SE7EN+ User Manual Chapter 2 Page 43
Open circuit mouthpiece position (test 43)
Test 43 (mouthpiece OC position test) is automatically passed provided the mouthpiece was
left in the OC position following the previous steps. If, for some reason, the mouthpiece is not
in the OC position when Test 43 appears on the screen, the mouthpiece vibrator will activate
along with the HUD and battery LEDs and audio alarm. The letters “OC” will appear in the
upper-left corner of the LCD screen and, along with a low frequency tone and the “Open-Cir-
cuit” icon (diver with bubbles), will ash until the mouthpiece switch is placed in the OC position
(Figure 2-7). There will be two beeps. If you do not repsond to the action required the
beep will be repeated and eventually turn on constantly 20 seconds before a test-user-notresponse-
time out. The system allows the diver up to two minutes to make this switch. The “Open-Circuit”
icon will continue to display on the LCD until Test 50, when the mouthpiece needs to be
switched to the closed-circuit (CC) position.
If the mouthpiece appears to be in the open-circuit position, but Test 43 does not pass, then make
sure that the mouthpiece switch is fully in the OC position. If the test still does not pass, then
make sure the HUD is positioned correctly on the mouthpiece, and is not twisted or otherwise
moved from its proper position. There are two magnets inside the mouthpiece which
are used together with a sensor to determine the mouthpiece position. If no amount of reposi-
tioning of the mouthpiece lever or HUD allows the system to pass Test 43, then contact an
authorized Poseidon Service Center.
Fig ur e 2-7.
Test 43 (Mouthpiece in OC position),
displaying Open-Circuit icon to indicate
that the mouthpiece must be placed in
the Open-Circuit position.
IMPORTANT:
Do NOT adjust the mouthpiece position again after completing
Test 43, until instructed to do so at Test 50. In order to complete
Test 49 (positive pressure loop test) successfully, the mouthpiece
must remain in the Open-Circuit (OC) position.
Canister Good conrmation (test 41)
Test 41 requires the user to conrm by the wet switch wet/dry sequence that:
A They have a canister installed
B It contains sufcient unused absorbent to complete the dive.
This becomes visible on the display by that the word ‘CAniStEr ‘ is scrolled
through the PO
2
eld. NOTE; This test is not automatic and is intended as a reminder for the
diver. By conrming test 41 the diver acknowledges that he/she has installed a canister prior to
powering up the Poseidon SE7EN+.