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EHowe
Master Diver
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Joined: Sun Aug 28, 2011 2:59 pm
First Name: Edward
Location: Chicago

Cyclone/HPR Service intervals.

Sat Mar 26, 2022 6:30 pm

Hey guys been a long time since I posted here. Hope everyone is healthy and getting on with life. I Setup my DAAM with Cyclone ,HPR, DSV and the heavy hoses and have been diving almost exclusively (fresh water only) for some years now. Works as designed, never had an issue. Every year at the start of the season I open it up make sure every thing is tight inside. I put an IP gauge on it pressurize and check for IP creep, then shut air off and let it hang overnight and have never lost more that a couple PSI. Should I be replacing wear items O rings, seats etc. every few years even if I'm not seeing any issues? Or would you wait for a small leak or IP creep before doing a complete overhaul?

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2THDIVR
Master Diver
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Joined: Sat Jan 02, 2010 4:01 pm
First Name: Scott
Location: Venice,FL

Re: Cyclone/HPR Service intervals.

Sat Mar 26, 2022 7:21 pm

Personally, I would wait.
I went more than 10 yrs. on my most used Phoenix before a rebuild.
I wasn't having any problems just figured it was time.
I do a lot of solo diving.

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ScubaLawyer
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First Name: Mark
Location: Laguna Beach, CA

Re: Cyclone/HPR Service intervals.

Sun Mar 27, 2022 4:44 am

At the 10 year mark I overhauled one of my Phoenix(s). Not because it needed it but just because it had been 10 years. Another Phoenix of mine developed a tiny stream of bubbles from the body-can interface after about 8 years. I replaced only the gasket and all is still good. My 2psi.:)
"The diver who collects specimens of underwater life has fun and becomes a keen underwater observer. .. seek slow-moving or attached organisms such as corals, starfish, or shelled creatures." (Golden Guide to Scuba Diving, 1968) :D

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rhwestfall
Master Diver
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Joined: Thu Jan 16, 2014 2:34 pm
First Name: Robert
Location: "La Grande Ile"

Re: Cyclone/HPR Service intervals.

Sun Mar 27, 2022 8:46 am

These things are really the Energizer bunny....
Bob

No Longer Awaiting my Kraken.....

James
Lung Diver
Posts: 68
Joined: Thu May 18, 2017 7:54 am
First Name: James
Location: Lower Alabama

Re: Cyclone/HPR Service intervals.

Tue Mar 29, 2022 10:13 am

I find it interesting that the early Aqualung Repair Manual does not specify a service interval... but in the introduction, the first sentence under Trouble Shooting is "If a regulator is malfunctioning (leaking air or water or breathing improperly), it should be considered in need of a general overhaul."
Combine that with the fact that most of the the actual instructions tell you to check condition (not automatically replace) parts, demonstrates an approach of "fix it if it has failed or non invasive checks show it's in need."
I would (and do) just keep an eye on it for any signs of concern (IP creep, mild freeflow from worn out second stage seat, etc.) and rebuild when it tells you it needs it.

Respectfully,

james

BigSwell
Lung Diver
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Joined: Thu Apr 18, 2019 6:57 pm
First Name: Kevin
Location: Kalifornia

Re: Cyclone/HPR Service intervals.

Tue Mar 29, 2022 12:56 pm

I have often wondered if the manufacturers annual service/ inspection requirement to keep the "free parts for life" (I think Aqualung may be the one of the few that actually has this program now) is more of a CYA (cover your @$$ests) for them in case of a lawsuit for failure of their equipment rather than the need for R&R of worn parts. I'm fairly certain no 2 divers are alike unless they dive exclusively with each other so the work load on a regulator or any other scuba equipment is varied in a wide range from diver to diver not to mention how they care for their gear. I've also wondered if using a system of hours under use rather than a timeframe is a better gauge of possible service and if this would be better a method to determine a service interval. Then again, not sure many divers actually clock their use time per reg. I have started doing this with my higher end/ technical regs as I do with all my rebreather equipment. To each their own I guess...

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rhwestfall
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First Name: Robert
Location: "La Grande Ile"

Re: Cyclone/HPR Service intervals.

Tue Mar 29, 2022 2:40 pm

add in environment and care.... My freshwater reg will likely go a lot longer that one seeing saltwater, especially if rinsing is not implemented well....
Bob

No Longer Awaiting my Kraken.....

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rhwestfall
Master Diver
Posts: 594
Joined: Thu Jan 16, 2014 2:34 pm
First Name: Robert
Location: "La Grande Ile"

Re: Cyclone/HPR Service intervals.

Tue Mar 29, 2022 2:40 pm

add in environment and care.... My freshwater reg will likely go a lot longer than one seeing saltwater, especially if rinsing is not implemented well....
Bob

No Longer Awaiting my Kraken.....

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Chris
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First Name: Chris
Location: Coos Bay Oregon
Contact: Website

Re: Cyclone/HPR Service intervals.

Sun Apr 10, 2022 10:59 pm

I put a little over 300 dives on my Phoenix before I rebuilt it. But that was only because I got salt water in it and the second stage spring was making a horrible sound periodically.

scrane
Skin Diver
Posts: 29
Joined: Sun Sep 15, 2019 10:07 am
First Name: William

Re: Cyclone/HPR Service intervals.

Wed Apr 13, 2022 12:11 pm

How did things look inside the Phoenix, et al? Any surprises?

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Bryan
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Location: Wesley Chapel Florida
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Re: Cyclone/HPR Service intervals.

Thu May 12, 2022 5:02 pm

Argonaut, Phoenix, Cyclone are all battle axes and even without care will take a beating far beyond what should be expected. I have serviced some that were to the point of requiring extensive soaking to even get the first stages apart. IMO the achilles heel of them as well as any other diaphragm regulator is the HP seat and to a far lesser degree the HP diaphragm. Luis was very wise when we made them all with replaceable volcano orifices. When those are fixed in the body and get damaged or heavily corroded they are next to impossible to correct and make work again. Now you just push out the damaged one, install a new one and go on with it.
HPR does not have anything special as far as it's seat material goes but being made from silicone it will far outlast anything made from rubber. Failings in the seat come more often from debris than from wear from my observations. The combination of demand lever, lever angle and ability to adjust the venturi flow is the magic behind the HPR.
Doing it right should include some common sense, not just blindly following specs and instructions. .Gary D, AWAP on SB

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