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silent running · 6th July 2006, 03:24

Quote: (Originally Posted by Chris)

Well I guess that’s one good thing about the PRISM, it is just so simple to work on and fix yourself. Anything breaks you just pull out the old DP190 and glue it back together: D Cheers
Chriso

Hi Gillenvy, the Prism is definietly the most simple ECCR out there and this does make things more easy to fix, as there's less to go wrong with in the first place. This is a big advantage for me as somebody who does most of his dives far away from a Fed Ex location. The main drawback is that there's no way to change the electronic SP underwater as there's no handset/controller, only an on/off switch. The electronics only hold the SP and diagnosing trouble undewater is done with HUD alarms and the 2dry. It's a trade off I'm happy to make after seeing so many problems with other ECCR controllers. I've not missed a dive yet, near to 400hrs.
I too had a solenoid failure-corrosion @ 300+hrs possibly from saltwater in O2 or the fill whip. But I was able to continue to dive the unit for the rest of the trip with the power off, using the 2dry for my PO2 monitor, which is passive and driven directly off the sensors themselves. It really wasn't that big of a deal as we spent most of our training flying the thing manually, so I was used to it.
The Prism solenoid is outside of the loop, so it's a bit more difficult to swap, but I'm told that it is replaceable in the field. But then again, I don't really need it to dive the unit. Thus far I've had no problems that I could not solve with a new o-ring, epoxy or aquaseal.

Other than the handsets/head electronics, which are the most expensive and complicted part of an ECCR, the solenoid is probably the most complicated thing that can fail. And I think it's reasonable to expect that it should be easy to swap out. For me, this is where I would draw the line-everything other than the hand sets/head electronics should be replaceable or easy to fix, without soldering. Traveling with extra heads/handsets seems a little much to ask, cost wise. Then you might as well bring 2 units. -Andy

6th July 2006, 03:24	#5 (permalink)
silent running Mature mouth breather Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: Jun 2005 Location: U.S.A. Brooklyn, New York Posts: 1,832	Re: Which eCCR is most field servicable? Quote: (Originally Posted by Chris) Well I guess that’s one good thing about the PRISM, it is just so simple to work on and fix yourself. Anything breaks you just pull out the old DP190 and glue it back together: D Cheers Chriso Hi Gillenvy, the Prism is definietly the most simple ECCR out there and this does make things more easy to fix, as there's less to go wrong with in the first place. This is a big advantage for me as somebody who does most of his dives far away from a Fed Ex location. The main drawback is that there's no way to change the electronic SP underwater as there's no handset/controller, only an on/off switch. The electronics only hold the SP and diagnosing trouble undewater is done with HUD alarms and the 2dry. It's a trade off I'm happy to make after seeing so many problems with other ECCR controllers. I've not missed a dive yet, near to 400hrs. I too had a solenoid failure-corrosion @ 300+hrs possibly from saltwater in O2 or the fill whip. But I was able to continue to dive the unit for the rest of the trip with the power off, using the 2dry for my PO2 monitor, which is passive and driven directly off the sensors themselves. It really wasn't that big of a deal as we spent most of our training flying the thing manually, so I was used to it. The Prism solenoid is outside of the loop, so it's a bit more difficult to swap, but I'm told that it is replaceable in the field. But then again, I don't really need it to dive the unit. Thus far I've had no problems that I could not solve with a new o-ring, epoxy or aquaseal. Other than the handsets/head electronics, which are the most expensive and complicted part of an ECCR, the solenoid is probably the most complicated thing that can fail. And I think it's reasonable to expect that it should be easy to swap out. For me, this is where I would draw the line-everything other than the hand sets/head electronics should be replaceable or easy to fix, without soldering. Traveling with extra heads/handsets seems a little much to ask, cost wise. Then you might as well bring 2 units. -Andy Last edited by silent running : 6th July 2006 at 03:27.
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