posidon cyklon 3950 1st stage HELP!!!

[Diver man medley]

Hi peeps,
Had a posidon cyklon for about 3 months now, it has been great for the time i have had it but someone took it apart.
Its has been put back together by someone who service's them but when set to 9 bar it keeps creeping way past that, its really hard to pull any air through it wot so ever!
Does it need a new hight pressure seat?
Any help would be great
medley

 

[Thadmn]

If you're not comfortable working on it yourself, you should take it to someone that knows what they're doing. They're not really that complicated. It sounds like something is sticking or maybe some foreign material is caught in it, bad o-ring etc. It needs to be taken apart and looked at closely. Use a magnifying glass. Make sure all the rubber parts/seats are not nicked or anything. Blow out orifaces with compressed air, and use an ultrasonic cleaner if available. Vineagar works well for cleaning off corrosion. Use o2 safe grease sparingly if needed when reassembling. You can find service manuals online. Make sure that there aren't any lost/missing parts. I have two of these first stages myself.

 

[widget]

Hi peeps,
Had a posidon cyklon for about 3 months now, it has been great for the time i have had it but someone took it apart.
Its has been put back together by someone who service's them but when set to 9 bar it keeps creeping way past that, its really hard to pull any air through it wot so ever!
Does it need a new hight pressure seat?
Any help would be great
medley

I dont understand what you mean by that.? Do you mean it starts free flowing? or its really hard to breathe on.?

Generally (although not always) if it creeps and starts to free flow chances are the HP seat is either damaged or it has some dirt stuck on it, pull it out and have a good look.

If its creeping and its difficult to breathe on, I suspect something is incorrectly reassembled or a part is missing.!

 

[tfsails]

I assume the 9 bar you're talking about is the IP for the first stage and it creeps upward. I am also assuming that your Cyklon 5000 (3950) has the 3720 first stage. Based on these assumptions, if your buddy took this first stage apart and put it back together without the proper special tools, I'd say that he most likely put it back together incorrectly. It's nigh on impossible to properly assemble a 3720 first stage without these tools. Creeping IP is a symptom of an improper seal between the HP seat and the poppet. There are several causes for this, and I can't begin to know without looking at the stage. I'd suspect that the hard breathing may be something else entirely.

My advice to you is twofold: 1. take the whole reg to a Poseidon tech who has the proper tools and can rebuild it properly. 2. tell your buddy not to take it apart again!

Cyklons are good regs and they'll last you a lifetime. They are not hard to rebuild, but the guy who puts it back together better know what he's doing or it'll never work right again.

 

[Diver man medley]

Thanks for your help guys, i'am new to diving so i think it would be better to get a tech bloke to look at it, its just that i live in dahab in egypt and know one can fix posidon regs here!

On the first stage it says it says 3950 so I'am assuming its a 3950?! I dont really know?
Medley

 

[tfsails]

3950 is Poseidon's model number for the whole regulator. I'm as certain as I can be without seeing the reg that the first stage is the 3720.

 

[Diver man medley]

Thats good to know, does anyone know where i could get a service kit for a 3720 then?

 

[tfsails]

Take it to a Poseidon dealer. Assuming their service techs are trained in Poseidons and they have the proper tools, you'll do much better having them rebuild it than if you try to do it yourself. Servicing Poseidons isn't hard. The job is made MUCH more difficult if you do not have the proper tools to do it, however, and you stand a much better chance of making a boo-boo like the one that started this thread.

 

[scoobydrew]

Hey there

You say that you have set your IP to 9 bar, it is important to know exactly what model you have as some need setting as high as 11 although 9 like most other brands is the norm.

I have a set of cyklones and over the last year I was instructing in central america - total nightmare as I believe I had the only poseidons in latin America. I with the assistance of an ex military/police diver trainer managed to get them serviced and I have been working on them since but this is no substitute for properly trained people with the right tools working on them. If you do not have access to these (although with the amount of brittish divers in Egypt there must be someone - try checking the poseidon site) then you can try something basic first. I assume you know that if you look in to the second stage through the mouthpiece you will see a black plastic round barrel that covers the metal piece that the lever (operating device) is attached to, if you turn this around then you will see that there is a big hole on one side, if you adjust it so that the hole is facing your mouth when you breath it will make the breathing easier, give it a try, when doing so you can put something inside the mouthpiece to turn the plastic thing (ejector sleeve) but use something that will not damage it i.e. not something sharp. I can immagine that last sentance infuriating firm believers of using the right tools or nothing but I do completely understand what it is like being overseas and simply not having access to these tools.

Re the creeping IP, this can happen, it could by a symptom of a worn pressure seat but if its 3 months old then unlikely unless you got them second hand.

Poseidons are great regs and although they are a nightmare if you are off the beaten path for parts and servicing I love mine and will no doubt continue to do so for a long time yet but out of the 10 or so different brands that I service without any issue whatsoever, mine are always the hardest and this comes down to the fact that I have not had the appropriate training. you need to be really sure about what you are doing and test them thouroughly before going out with students i.e. not just at 18 meters, when you get them working get a pony and a willing buddy and take them deep to ensure that they function at depth.