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For the first time in a while we had to move our fridge freezer to clean behind. It is a 5 year old Liebherr CN3933.
The unit is working fine. When we pulled the fridge freezer out we saw a couple of teaspoon full sized puddle of blue liquid under the unit. It looks like the condensation on the copper tubing running left to right at the top of the picture below is not running into the plastic tray above the compressor where it would evaporate. The black insulation looks too far over to the right and you can see a dew drop of water waiting to drip on to the copper tube below. You can see corrosion where water is dripping onto the tube. Would you agree that the black insulation should be pushed over to the left such that the dew drops drip into the plastic tray above the compressor?
Also we have found the black plastic piece shown below. It looks like it pushed onto copper tube but we don’t know where? Any idea where it fits and is it anything to do with the drips of water? It is not the right size to fit on the copper tube at the top of the above picture.
Thanks for your help, we really don’t want a flammable refrigerant leak from copper tube corrosion.
The plastic parts are noise vibration dampers, the one in your hand fits on the compressor discharge pipe the black thinner tube below the sweating pipe.
Condensation is normal on the pipe as cold refrigerant is drawn back to the compressor. A through defrost may reduce the sweating if an accumulation of ice has built up on the freezer coil and pipework, this can happen, despite being frost free, a full turn off defrost is recommended one a year for general cleaning etc, you do not have anything to worry about from what I can see.Tony R wrote:The plastic parts are noise vibration dampers, the one in your hand fits on the compressor discharge pipe the black thinner tube below the sweating pipe.
Condensation is normal on the pipe as cold refrigerant is drawn back to the compressor. A through defrost may reduce the sweating if an accumulation of ice has built up on the freezer coil and pipework, this can happen, despite being frost free, a full turn off defrost is recommended one a year for general cleaning etc, you do not have anything to worry about from what I can see.Thank you for that. Will try a full defrost then next time the unit is near empty.
All the same, I am tempted to put a plastic cable tie on the top copper tube trimmed to length with the tail of the cable tie ponting down into the plastic tray. Basically, to encourage any condensate running down the tube to preferentially drip into the tray where the warmth of the compressor will evaporate it away.
Thanks again for the encouraging advice.
One more thought. If the drains from the fridge and freezer are blocked with crumbs etc…. Is it possible the condensate would collect and run down the upper copper tube? I have just realised our previous Liebherr fridge sometimes got a blocked condensation drain and I took to periodically poking it to ensure it was clear. Thanks again.
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