manual o2 addition

pchanning · 20th January 2006, 13:26

Hi all,

Has anyone ever had to press theyre manual o2 add button in anger..??

Not for optional o2 Rebreather deco stops, but in order to stay on the loop. If you have, perhaps you could suggest why you stayed on the loop.

Moderators: would it be possible to set up a poll so people who read the thread can vote 'no' (as well as yes) - this would help to put the question into context.

cheers
paul

Jim · 20th January 2006, 13:39

Hi all,

Press it all the time ..... fly my unit manually - solenoid is my back up -

Benefits to me include:

I'm kept on the ball, don't get lazy & have to monitor my PPO2 constantly.
Less chance of the solenoid jamming open.
Rig set to at 1.2, fires if I am unable/too busy/forget to keep unit at 1.3.
Less drain on battery (re solenoid).
If solenoid fires at 1.2 - the sound is an excellent alarm that I do not usually hear during a dive.

Cheers all.

louisrankin · 20th January 2006, 14:03

Jim,

It sounds like you really want to be a Kiss diver, I will swap my classic or sports kiss for you Meg if you like

Louis

pchanning · 20th January 2006, 14:13

nice one Jimbo, but what I am trying to assess is for those that use their Rebreather's for maintaining set-point throughout the dive - the RB failing - hence manual o2 injection.

cheers
p

Skeletor · 20th January 2006, 14:55

Only once, when the unit failed to maintain setpoint . . . . to this day, I still don't know why. It went back to AP, they sprinkled it with pixie dust and it was fine after that.

As to why I stayed on the loop . . . I knew how to deal with it so I just didn't see the point of coming off it.

DaveP · 20th January 2006, 15:22

I've had to do it once in anger. Diving on an evolution the set point stuck on low and resisted attempts to switch high manually. Maintained high set point manually with the O2 button for most of the ascent until high set point could be reselected. I will always stay on the loop if at all possible and would only bail out in the event of a total loop flood or co2 hit.

Dave

Deep Thought · 20th January 2006, 17:28

Quote: (Originally Posted by Mr. Greekbird)

Hi all,

Has anyone ever had to press theyre manual o2 add button in anger..??

Not for optional o2 Rebreather deco stops, but in order to stay on the loop. If you have, perhaps you could suggest why you stayed on the loop.

Moderators: would it be possible to set up a poll so people who read the thread can vote 'no' (as well as yes) - this would help to put the question into context.

cheers
paul

In Anger? Yes and No…Yes I have pushed the O2 Manual Add button by necessity in a couple instances, and it was followed by Anger.

The first time I recall pushing the O2 add button as a necessity was immediately after doing a screaming descent to 200 feet in Truk Lagoon (prior to the delivery of the AP ADV on the inspiration) and I was adding Diluent – Oh Sh _t wrong button! Yes I was mad at myself, and I stayed on the loop because the dive was awesome…aside from all the racket with the buzzer going off.

The second time was doing a moderate depth bomber in Lake Washington, dismissing the notion that this would be a long dive or require much deco, I proceeded to have a great dive and racked up a lot of deco. Oh Sh_t , I knew on ascent the onboard Oxygen was not going to last the entire deco. Having an offboard source of gas is a valuable option. And again I was mad at self.

These events come with a fair amount of time spent underwater on ccr’s and all I can say is that it is very easy to be a hypocrite, or to advocate strict behavior yet allow oneself to slip on personal dive habits. The more you dive the more you push the envelope, and one cannot call themselves experienced unless you had some.

Good post and I would like to see more questions on the techniques / options for bailing out or staying on a ccr. For example how many people have had to do _______ or any other emergency procedure. Are the procedures that are currently taught valid?

Safe diving

DT

MaxMekker · 20th January 2006, 18:04

Using KISS so I have no other option

RH

ccr_ada · 20th January 2006, 18:06

ha
what about pressing the manual dil button when you have to shut the adv off because it leaks

yes i usually have a video,camera,goody bag,fishing rod or scooter in hand so hate pushing those buttons

i have 4 buttons on my inspo and after a few weeks diving i know the ones im not using because they get stiff to press

maybe i should use the buttons more

or maybe its a maintenance issue

now when was the last time i washed the lungs out

ada

Andy Del · 20th January 2006, 21:38

Diving a KISS, one is continually aware of their PO2 and the need to add O2 (or stop the flow) when necesary.

But having had the KISS orifice block once, I have dived and found I needed to kep manually adding O2. Not an emergency, just aother way to dive the unit. Come to think of it, I also had the O2 flow rate go OTT at 70m so I had to not do any manual addition, but feather the O2 tank valve for the entire dive.

Vinegar, ultrasonic bath, new O-rings and washing the cr@p out of the orifice fixed it up good as new!

View Poll Results: Have you had to use Manual O2 addition in an emergency
Yes, to stay on the loop	6	21.43%
No, just for normal ops	20	71.43%
No, my puku is so large it obscures the buttons	2	7.14%
Voters: 28. You may not vote on this poll

20th January 2006, 13:26	#1 (permalink)
pchanning PFO free :) Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2005 Location: fixed! Posts: 454	manual o2 addition Hi all, Has anyone ever had to press theyre manual o2 add button in anger..?? Not for optional o2 Rebreather deco stops, but in order to stay on the loop. If you have, perhaps you could suggest why you stayed on the loop. Moderators: would it be possible to set up a poll so people who read the thread can vote 'no' (as well as yes) - this would help to put the question into context. cheers paul __________________ Cheers Paul The key to enlightenment... is survival.
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20th January 2006, 13:39	#2 (permalink)
Jim Lovable Cockhead ! Current Rebreather/s: Megalodon Other Rebreather/s: Inspiration Classic Join Date: Jun 2005 Location: Purley, UK Posts: 152	Re: manual o2 addition Hi all, Press it all the time ..... fly my unit manually - solenoid is my back up - Benefits to me include: I'm kept on the ball, don't get lazy & have to monitor my PPO2 constantly. Less chance of the solenoid jamming open. Rig set to at 1.2, fires if I am unable/too busy/forget to keep unit at 1.3. Less drain on battery (re solenoid). If solenoid fires at 1.2 - the sound is an excellent alarm that I do not usually hear during a dive. Cheers all. __________________ Jim Spence
(Offline)

20th January 2006, 14:03	#3 (permalink)
louisrankin Póg mo thóin Current Rebreather/s: Megalodon Other Rebreather/s: Sport Kiss Classic Kiss Join Date: May 2005 Location: Cambridge Posts: 315	Re: manual o2 addition Jim, It sounds like you really want to be a Kiss diver, I will swap my classic or sports kiss for you Meg if you like Louis
(Offline)

20th January 2006, 14:13	#4 (permalink)
pchanning PFO free :) Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2005 Location: fixed! Posts: 454	Re: manual o2 addition nice one Jimbo, but what I am trying to assess is for those that use their Rebreather's for maintaining set-point throughout the dive - the RB failing - hence manual o2 injection. cheers p __________________ Cheers Paul The key to enlightenment... is survival.
(Offline)

20th January 2006, 14:55	#5 (permalink)
Skeletor The 4th King Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: Purgatory Posts: 47	Re: manual o2 addition Only once, when the unit failed to maintain setpoint . . . . to this day, I still don't know why. It went back to AP, they sprinkled it with pixie dust and it was fine after that. As to why I stayed on the loop . . . I knew how to deal with it so I just didn't see the point of coming off it.
(Offline)

20th January 2006, 15:22	#6 (permalink)
DaveP New Member Current Rebreather/s: Inspiration Classic Evolution Other SCR Other Rebreather/s: Other SCR Join Date: Jun 2005 Location: UK Cornwall Posts: 35	Re: manual o2 addition I've had to do it once in anger. Diving on an evolution the set point stuck on low and resisted attempts to switch high manually. Maintained high set point manually with the O2 button for most of the ascent until high set point could be reselected. I will always stay on the loop if at all possible and would only bail out in the event of a total loop flood or co2 hit. Dave
(Offline)

20th January 2006, 17:28	#7 (permalink)
Deep Thought RebreatherWorld Sponsor Current Rebreather/s: Inspiration Vision Classic Kiss Other Rebreather/s: Inspiration Classic Inspiration Vision Evolution Megalodon Sport Kiss Classic Kiss Optima Join Date: Apr 2005 Location: Great Lakes Posts: 193	Re: manual o2 addition Quote: (Originally Posted by Mr. Greekbird) Hi all, Has anyone ever had to press theyre manual o2 add button in anger..?? Not for optional o2 Rebreather deco stops, but in order to stay on the loop. If you have, perhaps you could suggest why you stayed on the loop. Moderators: would it be possible to set up a poll so people who read the thread can vote 'no' (as well as yes) - this would help to put the question into context. cheers paul In Anger? Yes and No…Yes I have pushed the O2 Manual Add button by necessity in a couple instances, and it was followed by Anger. The first time I recall pushing the O2 add button as a necessity was immediately after doing a screaming descent to 200 feet in Truk Lagoon (prior to the delivery of the AP ADV on the inspiration) and I was adding Diluent – Oh Sh _t wrong button! Yes I was mad at myself, and I stayed on the loop because the dive was awesome…aside from all the racket with the buzzer going off. The second time was doing a moderate depth bomber in Lake Washington, dismissing the notion that this would be a long dive or require much deco, I proceeded to have a great dive and racked up a lot of deco. Oh Sh_t , I knew on ascent the onboard Oxygen was not going to last the entire deco. Having an offboard source of gas is a valuable option. And again I was mad at self. These events come with a fair amount of time spent underwater on ccr’s and all I can say is that it is very easy to be a hypocrite, or to advocate strict behavior yet allow oneself to slip on personal dive habits. The more you dive the more you push the envelope, and one cannot call themselves experienced unless you had some. Good post and I would like to see more questions on the techniques / options for bailing out or staying on a ccr. For example how many people have had to do _______ or any other emergency procedure. Are the procedures that are currently taught valid? Safe diving DT __________________ Creature Of Habits; Mostly Bad www.gudcscuba.com
(Offline)

20th January 2006, 18:04	#8 (permalink)
MaxMekker New Member Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Nov 2005 Location: Norway, Skien Posts: 32	Re: manual o2 addition Using KISS so I have no other option RH __________________ Tusenkunstner
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20th January 2006, 18:06	#9 (permalink)
ccr_ada Temporary Read only mode for site infractions Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Feb 2005 Location: uk sorry G.B. Posts: 273	Re: manual o2 addition ha what about pressing the manual dil button when you have to shut the adv off because it leaks yes i usually have a video,camera,goody bag,fishing rod or scooter in hand so hate pushing those buttons i have 4 buttons on my inspo and after a few weeks diving i know the ones im not using because they get stiff to press maybe i should use the buttons more or maybe its a maintenance issue now when was the last time i washed the lungs out ada Last edited by ccr_ada : 20th January 2006 at 18:09.
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20th January 2006, 21:38	#10 (permalink)
Andy Del Classic KISSer Current Rebreather/s: Sport Kiss Classic Kiss Other Rebreather/s: Join Date: Feb 2005 Location: Australia, Sunny Sydney Posts: 437	Re: manual o2 addition Diving a KISS, one is continually aware of their PO2 and the need to add O2 (or stop the flow) when necesary. But having had the KISS orifice block once, I have dived and found I needed to kep manually adding O2. Not an emergency, just aother way to dive the unit. Come to think of it, I also had the O2 flow rate go OTT at 70m so I had to not do any manual addition, but feather the O2 tank valve for the entire dive. Vinegar, ultrasonic bath, new O-rings and washing the cr@p out of the orifice fixed it up good as new! __________________ Yellow - the colour of greatness!
(Online)

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