Dolphin Maintenance

CEStanley · 24th July 2007, 13:52

Hi All,
I ordered some components from Martin at TecMe and received them last night. While installing the components, I decided to remove the breathing bags and inspect them. The inhalation bag and scrubber came out easily, however the exhalation bag is connected to the dump valve and the dump valve I could not remove, so I could not remove the exhalation bag.

My question (after that background) is what is the trick to removing the dump valve from the Dolphin case?

Cheers
CES

AMW · 24th July 2007, 14:03

The fitting is an interference fitting so you will need to apply a bit of pressure, push it with the palm of the hand (down into the case). It should then push out of the case.

Andrew.

**Freef** · 24th July 2007, 14:27

Surely you are removing your bags after every dive for cleaning and sterilisation? If not you need to.

A bit of silicone grease on the rubber collar will help with future assembly/disassembly.

CEStanley · 24th July 2007, 20:20

Quote: (Originally Posted by AMW)

The fitting is an interference fitting so you will need to apply a bit of pressure, push it with the palm of the hand (down into the case). It should then push out of the case.

Andrew.

Ah, that was easy. Thanks.

CEStanley · 24th July 2007, 20:27

Quote: (Originally Posted by Freef)

Surely you are removing your bags after every dive for cleaning and sterilisation? If not you need to.

A bit of silicone grease on the rubber collar will help with future assembly/disassembly.

I have found in the last two years (my SCR diving experience) that many things about the SCR and about maintenance of the SCR were (inadvertently) left out of my training. The first bit of information that I discovered was the integrated weight pouches. That seams very basic and I was surprised to find the pockets so readily available. I knew the loop needed to be disinfected however I have not been taking the exhale bag out of the case nor disinfecting it.

Freef, I learn every time I interface with you. Thank you again.

Andy Barker APS · 24th July 2007, 21:07

HI all,
just to add my bit, I always strip down the unit after a days diving
& clean/ disinfect the breathing hoses/both bags, dry off & re'assemble
I was told this as a part of my training.
Andy

**Freef** · 25th July 2007, 05:50

It's a lot easier to take the lungs out to clean them, it;s a shame your training was lacking [I was the one cleaning my unit in my training and that's how it should be].

I don't sterilise my loop unless I have finished diving for a few days as it needs a thorough drying out. I drain the CL's and water trap and the hoses as far as possible and wash the valves and mouthpiece every day though.

CEStanley · 26th July 2007, 04:31

Quote: (Originally Posted by Freef)

[I was the one cleaning my unit in my training and that's how it should be].

I don't sterilise my loop unless I have finished diving for a few days as it needs a thorough drying out. I drain the CL's and water trap and the hoses as far as possible and wash the valves and mouthpiece every day though.

I am very thankful that this site is around to supplement the lack of a through training I did receive. I have been in the practice of drying the loop as best as I can, removing the CLs is something I wondered about but did not do. I will now do a much more through job. As far as the mouth piece, it requires a good cleaning after every dive and that has been a practice that I follow.

Well, I do have another question that is related. Not to cleaning, but to maintenance. My dump valve turns around 20 degrees. Is that normal? I expected it would turn several times to adjust the dump pressure. If 20 degrees is not normal, can anyone tell me how to remove it from the exhale bag? I have a complete maintenance document, but it does not describe how to remove it from the bag.

Thanks again.
Still a newbe after two years of Dolphin diving...

**Freef** · 26th July 2007, 14:33

The dump valve should go 4-5 clicks, about the 20 deg that you mention.

24th July 2007, 13:52	#1 (permalink)
CEStanley SCR Diver Current Rebreather/s: Dolphin Other Rebreather/s: Dolphin Join Date: Feb 2005 Location: USA, Arizona Posts: 27	Dolphin Maintenance Hi All, I ordered some components from Martin at TecMe and received them last night. While installing the components, I decided to remove the breathing bags and inspect them. The inhalation bag and scrubber came out easily, however the exhalation bag is connected to the dump valve and the dump valve I could not remove, so I could not remove the exhalation bag. My question (after that background) is what is the trick to removing the dump valve from the Dolphin case? Cheers CES
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24th July 2007, 14:03	#2 (permalink)
AMW Andrew Martin Ward Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: Oct 2005 Location: Cam ,Glos, England Posts: 171	Re: Dolphin Maintenance The fitting is an interference fitting so you will need to apply a bit of pressure, push it with the palm of the hand (down into the case). It should then push out of the case. Andrew. __________________ AMW Blog (very poor effort :-) http://a-m-ward.blogspot.com/ http://amward.myblogsite.com/ Lot ,France cave diving sites and area resources. www.lot46.com Caving and cave diving photos http://www.flickr.com/photos/amward/
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24th July 2007, 14:27	#3 (permalink)
Freef Custom Title Disallowed! Current Rebreather/s: Dolphin Other Rebreather/s: Dolphin Join Date: Jan 2006 Location: Land of the Freef, UK. Posts: 1,356	Re: Dolphin Maintenance Surely you are removing your bags after every dive for cleaning and sterilisation? If not you need to. A bit of silicone grease on the rubber collar will help with future assembly/disassembly. __________________ David. Currently owner of two differently sized ankles.
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24th July 2007, 20:20	#4 (permalink)
CEStanley SCR Diver Current Rebreather/s: Dolphin Other Rebreather/s: Dolphin Join Date: Feb 2005 Location: USA, Arizona Posts: 27	Re: Dolphin Maintenance Quote: (Originally Posted by AMW) The fitting is an interference fitting so you will need to apply a bit of pressure, push it with the palm of the hand (down into the case). It should then push out of the case. Andrew. Ah, that was easy. Thanks.
(Offline)

24th July 2007, 20:27	#5 (permalink)
CEStanley SCR Diver Current Rebreather/s: Dolphin Other Rebreather/s: Dolphin Join Date: Feb 2005 Location: USA, Arizona Posts: 27	Re: Dolphin Maintenance Quote: (Originally Posted by Freef) Surely you are removing your bags after every dive for cleaning and sterilisation? If not you need to. A bit of silicone grease on the rubber collar will help with future assembly/disassembly. I have found in the last two years (my SCR diving experience) that many things about the SCR and about maintenance of the SCR were (inadvertently) left out of my training. The first bit of information that I discovered was the integrated weight pouches. That seams very basic and I was surprised to find the pockets so readily available. I knew the loop needed to be disinfected however I have not been taking the exhale bag out of the case nor disinfecting it. Freef, I learn every time I interface with you. Thank you again.
(Offline)

24th July 2007, 21:07	#6 (permalink)
Andy Barker APS New Member Current Rebreather/s: Inspiration Vision Other Rebreather/s: Join Date: May 2007 Location: Bury St Edmunds Suffolk UK Posts: 28	Re: Dolphin Maintenance HI all, just to add my bit, I always strip down the unit after a days diving & clean/ disinfect the breathing hoses/both bags, dry off & re'assemble I was told this as a part of my training. Andy
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25th July 2007, 05:50	#7 (permalink)
Freef Custom Title Disallowed! Current Rebreather/s: Dolphin Other Rebreather/s: Dolphin Join Date: Jan 2006 Location: Land of the Freef, UK. Posts: 1,356	Re: Dolphin Maintenance It's a lot easier to take the lungs out to clean them, it;s a shame your training was lacking [I was the one cleaning my unit in my training and that's how it should be]. I don't sterilise my loop unless I have finished diving for a few days as it needs a thorough drying out. I drain the CL's and water trap and the hoses as far as possible and wash the valves and mouthpiece every day though. __________________ David. Currently owner of two differently sized ankles.
(Offline)

26th July 2007, 04:31	#8 (permalink)
CEStanley SCR Diver Current Rebreather/s: Dolphin Other Rebreather/s: Dolphin Join Date: Feb 2005 Location: USA, Arizona Posts: 27	Re: Dolphin Maintenance Quote: (Originally Posted by Freef) [I was the one cleaning my unit in my training and that's how it should be]. I don't sterilise my loop unless I have finished diving for a few days as it needs a thorough drying out. I drain the CL's and water trap and the hoses as far as possible and wash the valves and mouthpiece every day though. I am very thankful that this site is around to supplement the lack of a through training I did receive. I have been in the practice of drying the loop as best as I can, removing the CLs is something I wondered about but did not do. I will now do a much more through job. As far as the mouth piece, it requires a good cleaning after every dive and that has been a practice that I follow. Well, I do have another question that is related. Not to cleaning, but to maintenance. My dump valve turns around 20 degrees. Is that normal? I expected it would turn several times to adjust the dump pressure. If 20 degrees is not normal, can anyone tell me how to remove it from the exhale bag? I have a complete maintenance document, but it does not describe how to remove it from the bag. Thanks again. Still a newbe after two years of Dolphin diving...
(Offline)

26th July 2007, 14:33	#9 (permalink)
Freef Custom Title Disallowed! Current Rebreather/s: Dolphin Other Rebreather/s: Dolphin Join Date: Jan 2006 Location: Land of the Freef, UK. Posts: 1,356	Re: Dolphin Maintenance The dump valve should go 4-5 clicks, about the 20 deg that you mention. __________________ David. Currently owner of two differently sized ankles.
(Offline)

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