diving with a kiss vs inspiration/evolution

[johnv]

Originally Posted by Mark Chase

Running the unit manually is a good idea if you have had a low battery warning in the water

why? surely that's why you have 2 batteries? If you rotate the batteries slave to master, new in slave you know the spare is good. so if you get a low bat warning just turn the master off then on and promote slave to master.

why bother to run the thing manually? I do not consider low battery to be a serious problem.

For once I agree with mark, it all comes down to maintenance, if you change and test batteries & cells regularly there should be no need for electronics problems, current limiting etc etc

John

[Mark Chase]

Originally Posted by johnv

why? surely that's why you have 2 batteries? If you rotate the batteries slave to master, new in slave you know the spare is good. so if you get a low bat warning just turn the master off then on and promote slave to master.

why bother to run the thing manually? I do not consider low battery to be a serious problem.

For once I agree with mark, it all comes down to maintenance, if you change and test batteries & cells regularly there should be no need for electronics problems, current limiting etc etc

John

This is very true. I go for the Old battery swapped into Master and new battery into slave routine but I have to say there have been a few stories of suddenly dead batteries knocking around and I have experienced it my self once (on land). I had the master go into low battery mode and I switched to the slave only to have that go into low battery NO dive mode ??? This may have been a dodgy battery or it may have been an error on my part with inserting the wrong battery into the wrong slot. However such an experience in my short CCR diving history leads me to think a low battery warning during a dive would have me running the unit manually to minimise the load on the remaining power cell just in case.

I can’t have JohnV just agreeing with me... that would just be wrong


ATB

Mark Chase

[wreckweasel]

Originally Posted by RichClark

This would be interesting to read... any chance of pasting it here, or emailing it if it's too large.

Cheers

Rich

I'll dig it out, looks like I'll have to find it on my old PC and re-upload it, since its vanished from the KISS user site too!

Bloody computers

[Ken]

Originally Posted by wreckweasel

Ken,

theres a document on the KISS user site describing insp/kiss differences as well.

The chaps idea about fitting a KISS valve to an inspy has been done already by a certain well known fettler. It does indeed reduce your battery consumption, but it adds complexity in failure conditions. Most people think its more beneficial to conserve your batteries by manual flying your ECCR and using the electronics as a safety net.

/Zak

Hi Zak,

Thanks. I'm always archiving excellent summaries as well as taking into note interesting threads that translate well into video. Since the rebreather vol one. series compares various types of kits we always try to consider the perspective of the future buyer, as well as the experienced user. Cheers. Ken



p.s. as per fitting a KISS valve into an Inspiration...why would anyone bother other than to tinker around? Goofy idea.

[max101]

surely the more something is used the more likely it is to fail, ie. inspiration o2 solenoids, like that comparison said, u need to inject the kiss with o2 approximately 10-15 mins, why not let the elctronics do that for you ?
the kiss addition system does as much as it can then the electronics keep the set point, obviosly there is more chance of the soleniod sticking or what ever it does if it is always being used !!

[johnv]

Originally Posted by max101

surely the more something is used the more likely it is to fail, ie. inspiration o2 solenoids, like that comparison said, u need to inject the kiss with o2 approximately 10-15 mins, why not let the elctronics do that for you ?
the kiss addition system does as much as it can then the electronics keep the set point, obviosly there is more chance of the soleniod sticking or what ever it does if it is always being used !!

I don't think failure analysis is that simple, KISS valves can suffer different problems than ECCR's Also, you will introduce more plumbing, more O rings and more confusion.

remember, it's usually the diver that causes incidents, what you really need is a backup brain.

and don't anyone even think of mentioning the word buddy.

John