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Old 02-13-2011, 07:58 PM   #1
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dye for detecting leaks


Is using dye for detecting a leak safe for the unit?

Pros and cons?

How long should it be left in there?

thanks

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Old 02-14-2011, 06:36 AM   #2
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dye for detecting leaks


Dye made for finding leaks in AC's does not harm the system since it's pigment and oil. It mixes with the oil in the system so once added it's not possible to remove. The cons are it's a mess on hose ends and can take a month to show real slow leaks. Using an electronic leak detector and soap bubbles is faster but if they dont show anything then I'll put some dye in and come back later.

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Old 02-14-2011, 04:25 PM   #3
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dye for detecting leaks


Pump it up to test pressure on the label with Nitrogen and a electronic leak detector you should find it. Die sucks don't use it.

Correction, make sure there's refrigerant in the system to mix with the Nitro so the leak detector can pick it up.

Last edited by COLDIRON; 02-15-2011 at 06:18 AM. Reason: correction
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Old 02-14-2011, 07:46 PM   #4
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dye for detecting leaks


Yea don't use dyes. If you have had no luck in finding the leak add just a bit of a tracer gas and pump that bad boy up.
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Old 02-14-2011, 08:20 PM   #5
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dye for detecting leaks


Avoid dyes. They are a last resort only.
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Old 02-15-2011, 02:45 AM   #6
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dye for detecting leaks


Quote:
Originally Posted by COLDIRON View Post
Pump it up to test pressure on the label with Nitrogen and a electronic leak detector you should find it. Die sucks don't use it.
I went behind a guy who couldn't find a leak in a forty ton split-system.

I charged it with liq 22 and found the leak in the evap. would not pick up on an electronic with the access open.

I left the cover on and left my sniffer in the drain outlet. That got it.

The dye did not show up.
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Old 02-15-2011, 06:16 AM   #7
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dye for detecting leaks


Quote:
Originally Posted by hvaclover View Post
I went behind a guy who couldn't find a leak in a forty ton split-system.

I charged it with liq 22 and found the leak in the evap. would not pick up on an electronic with the access open.

I left the cover on and left my sniffer in the drain outlet. That got it.

The dye did not show up.
" Picked up many evap leaks from the drain line".

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