Thermo
technical advisor
- Joined
- Apr 18, 2011
- Posts
- 1,407
- Reaction score
- 65
I have cleaned out the drain tubes on a few Expys. I use a can of compressed air. Please do not use your air compressor as this outputs too much pressure and can lead to popping of the drain lines. I build up the straw of the air can using some masking tape. This will allow you to get a good seal on the opening too as the tape will deform a little bit as you press the straw against the opening. I also use a little bit of water to act as a "hammer" to help push the blockage out. Once you get things flowing, I use a water pitcher and pour about 2 quarts of water through each opening to flush whatever may be left out.