How to Repair a Leaking Mastercool Evap

Mastercool refrigerators use refrigerant to blow air across an evaporator coil. This coil cools the air while compressing it. When you have a leak in your evaporator coil, the air will not be able to cool and the power needed to run the unit will spike. Once you have repaired the leak, the unit will begin to cool the food again. You don’t have to be an HVAC technician to get your evaporator coil working properly; you can do it yourself with little hassle.

Phillips screwdriver
Slotted screwdriver
Liquid soap
Sandpaper
Clean rag
Vacuum pump
Epoxy

Instructions

- 1
  Unplug the refrigerator from the wall outlet. Use a Phillips screwdriver to remove the service panel covering the evaporator coil from the back of the unit.
- 2
  Pop the clamps off of the evaporator coil with a slotted screwdriver. Locate the leak on the coil. Bent or ruptured spots are the No. 1 suspect. Apply a liquid soap to the spot and look for bubbles, which will indicate a leak.
- 3
  Clean the leak with sandpaper. Remove any flakes or dust near the material. Wipe down the leak with a clean rag.
- 4
  Connect a vacuum pump to the service valve on the refrigerator, found at the bottom of the unit. Press epoxy to the leak, and wrap the epoxy all around the leaking pipe. Allow the epoxy to dry for three minutes.
- 5
  Turn on the vacuum gauge, and drain the coil to 10 inches mercury vacuum. The vacuum will bring all the air out of the system. Reassemble the refrigerator, then plug it back into the wall.

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