Cleaning out copper condensate line

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  #1  
Old 09-22-16, 12:14 PM
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Cleaning out copper condensate line

We have a central ac in our condo unit which has a u-shaped copper condensate line. About 3/4" in diameter. It is at least 12 inches from ac to wall where line disappears. I want to clean this out as it has a fair amount of rust in pan. The u shaped part has very sharp (90 degree) bends. It is not a smooth u like under a sink. Any ideas as to what type brush would work well? Thanks
Dave
 
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Old 09-22-16, 12:57 PM
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Can you post a pic of the trap?
 
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Old 09-22-16, 02:24 PM
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It is the rubber covered pipe at top.

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Last edited by PJmax; 09-22-16 at 07:15 PM. Reason: reoriented picture
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Old 09-22-16, 07:29 PM
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Sorry Dave..... you're not going to find a brush that will go around 90 degree copper fittings.

That trap won't contribute to the rust. Just flush your pan with plenty of water.
Is the top of that trap open ?
 
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Old 09-23-16, 07:15 AM
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I just checked, and it has a copper cap that pushes on. I was able to remove it. I would think I should be able to get a flexible brush in there to remove any debris. Is there supposed to be standing water in the tray inside the heat pump? I would say the level is about to the center of the pipe that is draining it. It is obviously draining because it is not overflowing.
 
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Old 09-23-16, 10:09 AM
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We can't see the bottom of the tray but it should be empty. The tray should be pitched very slightly towards the drain and the drain line should be lower than the drain pan.

Any water left in the pan will cause rust.
 
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Old 09-23-16, 11:25 AM
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Tray is 1/2 full while ac is running and has large chunks of rust. there really is no good way to clean it as the coil sits in the pan. It is draining into condensate pipe. Not sure if this is normal or not. It is a 1998 McQuay water source heat pump.
 

Last edited by Dave4242; 09-23-16 at 01:52 PM.
  #8  
Old 09-27-16, 07:20 AM
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By the way, it is a McQuay FCV048BLGM water source heat pump. Is there any trick on how to clean the condensate pan well? I opened the front access panel, but the coil sits so far down into the pan that I can't really get in there. The return area where the filters are located is so close to the wall of the utility room that I would have trouble getting in there too.
 
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