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MSL 72.161 Jetsam/Orca Spirit manual R.5
Mouthpiece Servicing & Troubleshoo ng
*Warning: Your KISS mouthpiece or BOV (including the 2nd stage) is a key component of the
KISS diving system and should be serviced yearly or more o en if required. When to service
depends on how o en you dive, the environment you dive in and also how well it is cleaned
a er every dive. It is important that it is kept clean and the knob should always turn
smoothly. Keeping your BOV clean is important as grit inside the moving parts can score
the plas c. Your local KISS dealer can assist you with servicing the BOV if you prefer not to
do it. Care should be taken to ensure that it is in good working order and not damaged.
Also, be aware that if you wash your BOV with a powerful hose, the valve disks may be
blown off!! A er cleaning, be certain to inspect your gear and follow all the pre‐dive
check’s!!!
IF THE MUSHROOM VALVES ARE DISTORTED OR DAMAGED THEY MUST BE REPLACED!!! When a aching (or removing)
the mushroom valves BE CAREFUL!!! When a aching (or removing) the NEW valves, PULL ON THE STEM GENTLY & ON‐
LY HOLD THE STEM WHEN REMOVING THE VALVE. DO NOT CARRY THE VALVE OR VALVE CARRIER BY THE STEM!
TROUBLESHOOTING
BUBBLING SECOND STAGE
First determine if the diluent first stage IP is creeping. If it is, you will probably have to replace the HP seat in the first
stage. Once you know that your first stage is in good working order, check to see where the IP is set. Ideally it should
be around 8 to 10 bar, with 10 bar (147 psi) being the maximum.
Once the IP has been set, you will want to ensure that the 2nd stage is adjusted properly. Turn the adjustment knob on
the second stage so that it is in the middle posi on. (If there is an adjustment knob). Remove the LP hose opposite of
the knob. The adjustment screw is on the inside on the 2nd stage where you removed the LP hose. Use a screw driver
to adjust the flow. Your adjustments should be minimal; only a millimeter or so at a me. Most 2nd stages are very
sensi ve and require a light touch. A er each adjustment check to see if your second stage is s ll bubbling and adjust
as necessary. Once the bubbling has stopped and the flow has been adjusted to your liking, you can dive the unit with
the adjustment knob on the le turned all the way in. This will also limit the chances of the regulator free flowing.
When you want to breath on the 2nd stage, you will just need to dial it out to where you find it comfortable.
If a er all that you s ll have a bubbling 2nd second stage the problem could be with the seat, inhale diaphragm, exhale
diaphragm or it could be debris. Your local dive shop should be able to service the 2nd stage for you.
*NOTE: When doing your nega ve pressure test, it is possible to damage the exhaust dia‐
phragm in the second stage. If your inhala on is extremely hard, for an extended period of
me, this can happen. Also, on the new BOV, the 2nd stage exhaust diaphragm can be dis‐
torted if the nega ve is too hard causing the test to fail.
Summary of Contents for ORCA SPIRIT
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