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motoadve
Joined: 23 Apr 2009
Posts: 123
Location: Seattle
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 Posted: Sat Dec 21, 2019 7:08 pm Post subject: Filling air with scuba tank procedure |
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When using the scuba tank to re fill the main air tank, does the main air tank valve needs to be in the open position or closed?
When do I know , I have put enough air in the main tank?
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dsavarese0812(at)bellsout
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| Posted: Sat Dec 21, 2019 7:43 pm Post subject: Filling air with scuba tank procedure |
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Is the scuba tank plumbed into the aircraft? If yes, it will depend on how it was plumbed into the aircraft. Assuming it is plumbed into the fill line from the external air fill port, yes you'll have to open the main air valve. Trace out the line from the scuba tank to wherever it plumbed and then draw it out on the pneumatic system schematic.
Assuming you're filling with the scuba tank and it is plumbed into the same line coming from the external air fill port, the pop off valve should pop off.
Dennis
On Saturday, December 21, 2019, 10:10:58 PM EST, motoadve <larry(at)motoadventuring.com> wrote:
--> Yak-List message posted by: "motoadve" <larry(at)motoadventuring.com (larry(at)motoadventuring.com)>
When using the scuba tank to re fill the main air tank, does the main air tank valve needs to be in the open position or closed?
When do I know , I have put enough air in the main tank?
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www.Backcountry182.com
Cessna 182 P
CJ -6
Read this topic online here:
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motoadve
Joined: 23 Apr 2009
Posts: 123
Location: Seattle
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| Posted: Sat Dec 21, 2019 10:10 pm Post subject: Re: Filling air with scuba tank procedure |
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Thanks, your assumptions are correct.
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Clouddog
Joined: 02 Jun 2016
Posts: 119
Location: Lebanon, TN
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| Posted: Sun Dec 22, 2019 5:09 am Post subject: Filling air with scuba tank procedure |
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If you have an external scuba tank that you use to refill your onboard main air bottle and emergency bottle it is simple. Connect the the scuba bottle to the fill port, open your main air valve, crack you scuba bottle valve open and watch your main air and emergency air gages in the front cockpit. As they approach the 50 -55 atmosphere range turn your scuba tank off. As Dennis said if your pressure relief valve (pop off valve on the left front firewall) is set and working correctly, it should begin to leak off pressure or even "pop off" to relive any excess pressure if you only need to refill your emergency tank, keep the main air valve closed, just watch the emergency air gauge in the rear cockpit.
Safe Flying
Greg "Clouddog " Wrobel
On Sat, Dec 21, 2019, 21:13 motoadve <larry(at)motoadventuring.com (larry(at)motoadventuring.com)> wrote:
| Quote: | --> Yak-List message posted by: "motoadve" <larry(at)motoadventuring.com (larry(at)motoadventuring.com)>
When using the scuba tank to re fill the main air tank, does the main air tank valve needs to be in the open position or closed?
When do I know , I have put enough air in the main tank?
--------
www.Backcountry182.com
Cessna 182 P
CJ -6
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=493927#493927
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