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Vaccum problem
Vaccum problem
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pedcrist
pedcrist
posted 13 Years Ago
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Hello,
I´m with difficulty to make total vaccum.
I´ve tried 3 times, with 3 diferent moulds, and never achieved total vaccum, there´s always a leak.
I´ve checked the gum tape several times, and nothing.
So i´ve tried with a Trough Bag connector at the vaccum line, and the feed line without connector, only the pvc hose with gum tape.
The result was the same, so i decided to make some tests.
First test:
With the Trough bag connector closed, i´ve switched on the pump, and when the gauge indicator got to the end, i´ve closed the pump valve, and then switched off. The gauge indicator moved, so there is a leak somewhere between the Trough bag connector and the pump.
There´s a few fotos taken with 2 minutes between them:
http://i675.photobucket.com/albums/vv112/pedcrist/P8060081.jpg
http://i675.photobucket.com/albums/vv112/pedcrist/P8060083.jpg
http://i675.photobucket.com/albums/vv112/pedcrist/P8060085.jpg
http://i675.photobucket.com/albums/vv112/pedcrist/P8060086.jpg
http://i675.photobucket.com/albums/vv112/pedcrist/P8060088.jpg
http://i675.photobucket.com/albums/vv112/pedcrist/P8060089.jpg
http://i675.photobucket.com/albums/vv112/pedcrist/P8060091.jpg
Second test:
With the Trough bag connector closed, i´ve switched on the pump, and when the gauge indicator got to the end, i´ve clamped the vac hose between the Trough bag connector and the catch pot, closed the pump valve, and then switched off. The gauge indicator moved not so fast as the first test, but moved, so there still´s a leak.
There´s a few fotos taken with 2 minutes between them:
http://i675.photobucket.com/albums/vv112/pedcrist/P8060092.jpg
http://i675.photobucket.com/albums/vv112/pedcrist/P8060093.jpg
http://i675.photobucket.com/albums/vv112/pedcrist/P8060094.jpg
http://i675.photobucket.com/albums/vv112/pedcrist/P8060095.jpg
http://i675.photobucket.com/albums/vv112/pedcrist/P8060096.jpg
http://i675.photobucket.com/albums/vv112/pedcrist/P8060097.jpg
I don´t know what´s happening, if someone know, please give me a help.
Another issue: When i connect the vac hose to the silicone connector, i´ve got to cut it to be more thin, otherwise the tube won´t fit in the hole with the bag thickness.
Thanks,
Pedro
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Vaccum problem
pedcrist
-
13 Years Ago
Hi Pedro, First thing to do is to put a clamp between the infusion and catch pot, now pull full vac...
Kevin-Lee
-
13 Years Ago
I agree with kevin-lee. You need to eliminate the catch pot and plumbing from the equation.
Warren
-
13 Years Ago
Hello, Today i´ve tried what Kevin-Lee told me, and it still something wrong. I´ve clamedp the...
pedcrist
-
13 Years Ago
Hello, I think your Vacuum mesurement is not the good location. You need to know if bag is sealed,...
SebRS
-
13 Years Ago
Ok, so run the test again but this time use new hoses in and out of the catch pot and also put the...
Kevin-Lee
-
13 Years Ago
Theres a slightly easier way to check which is leaking. Draw a full vacuum on the guage. turn off...
Warren
-
13 Years Ago
Another today´s tests: I´ve made a small vac bag only with the trough bag connector, made vac and...
pedcrist
-
13 Years Ago
I have a suspicion what this could be. (Also a note to Easycomposites!!) The connector on the...
baja_patient
-
13 Years Ago
Hello, I´m going to test the catct pot under water, but meanwhile if you measere the o-ring for me,...
pedcrist
-
13 Years Ago
i may have missed this but have you isolated the catch pot entirely? ie, pulled a vacuum then...
neilb
-
13 Years Ago
Don't feel bad. I have never been able to get a perfect leak proof infusion no matter what I tried....
fgayford
-
13 Years Ago
The reason it looks easy when they do it, is because they have done it hundreds of times... as with...
baja_patient
-
13 Years Ago
[quote][b]baja_patient (29/09/2012)[/b][hr]The reason it looks easy when they do it, is because they...
fgayford
-
13 Years Ago
I have made (for me) an important discovery! You all know the trouble I have been having trying to...
fgayford
-
13 Years Ago
thanks for sharing that information!
matthieutje65
-
13 Years Ago
Fred, I feel like that is amazingly good advice. I have always had trouble with bags not sealing,...
prairiecustomcomposites
-
13 Years Ago
Your welcome It really makes you nuts with all the time it takes to set up an infusion and then you...
fgayford
-
13 Years Ago
Im doing another roof i will try this Thanks
Daz
-
13 Years Ago
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