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REFRIGERATION

Troubleshooting

Refrigerator door not sealing properly

The door seal is the cheapest part of a commercial refrigerator and one of the most important. A gap of a few millimetres along one edge lets warm, humid kitchen air flow in every minute of the day. The result is longer compressor run times, frost on the evaporator, condensation around the frame, and food near the door running warmer than the rest of the cabinet. In Indian kitchens doors get heavy use, are slammed with trays and pushed with hips, and gaskets collect grease and masala that stop them sitting flat. Most seal problems are found and fixed in minutes.

First, check these

  1. Do the paper test: close the door on a strip of paper at several points around the gasket. It should resist when you pull. Where it slides out easily, the seal is weak.
  2. At night, with the cabinet lit inside and the room lights off, look for light leaking around the door edge.
  3. Look at the gasket for tears, splits at the corners, flattened sections, or parts pulled out of the groove.
  4. Check whether something inside, such as an overfilled shelf, tray edge or GN pan handle, stops the door closing.
  5. Open the door to about 45 degrees and let go. On self-closing doors it should swing shut and seat fully.

Likely causes

  1. 1. Dirty or sticky gasket

    You can check this

    Signs: Gasket coated in grease or food residue, seal fails in patches, gasket sticks then peels away.

    Fix: Clean the gasket and the cabinet face it seals against with warm water and mild detergent, then dry. Avoid solvents and harsh chemicals that harden the rubber.

  2. 2. Obstruction inside the cabinet

    You can check this

    Signs: Door bounces back or stops a little short; seal fails in one place only.

    Fix: Rearrange stock and shelves so nothing projects past the shelf front. Check door racks on undercounter units for bottles that stick out.

  3. 3. Torn, hardened or pulled-out gasket

    You can check this

    Signs: Visible splits, especially at hinge-side corners; gasket out of its channel; magnet strip broken.

    Fix: Push a loose gasket back into its groove. Replace a damaged gasket with the correct part for the model; many are push-in and can be changed without tools.

  4. 4. Unit not level

    You can check this

    Signs: Door drifts open or slams; gap larger at top or bottom.

    Fix: Level the unit with its feet so it tilts very slightly back, helping the door swing shut.

  5. 5. Sagging hinge or worn self-closer

    Technician job

    Signs: Door drops when opened, rubs the frame, or no longer closes on its own.

    Fix: Hinge pins, cams and closers wear in heavy use. A technician should adjust or replace them.

  6. 6. Warped door or failed frame heater

    Technician job

    Signs: Door twisted so one corner never touches; ice on the frame freezing the gasket.

    Fix: A technician should assess door alignment and test any frame heater.

When to call a technician

Call a technician if the door still fails the paper test after cleaning, levelling and clearing obstructions, if hinges have dropped, or if the gasket keeps tearing at the same corner, which usually means misalignment. Fix seal problems early; a leaking door can double the frost load and wear the compressor.

Isolate power before working on door frames that have heater wires. Take care with heavy doors when removing them; get help. Do not drill into cabinet walls, and leave any refrigeration work on hydrocarbon (R290 or R600a) units to trained technicians.

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