Proper care and maintenance are crucial to keep refrigerated display cases operating at optimal efficiency.

Cleaning requirements depend on the unit’s location and the levels of dirt and dust in the environment. Also, a remote condenser on a roof with trees shedding leaves nearby will need more attention.

Merchandiser cabinets should be thoroughly cleaned weekly using the proper chemicals as outlined in the manufacturer’s manuals. Each month, clean the condenser coil and check the gaskets for rips, tears and loose sealing. On a quarterly basis, check fan motors, compressors and other areas for loose parts and excessive noise. Mechanical fasteners should be regularly inspected for loose screws. With glass- and solid-door cases, make sure the door gaskets seal and close properly and that interior surfaces are kept clean.

Check the cold merchandiser’s temperature daily to confirm it is in the proper range. Consistently out-of-range temperatures may indicate the thermostat is bad or out of calibration, but it also could simply be due to a display case’s door being left open for an extended period.

Clogged condenser coils are the main cause of compressor failure, while water leaks could signify a clogged drain line. Condensation on door interiors may indicate a problem with the seal or alignment.

Look for anything in the compressor area that may affect airflow, such as paper or dirt on the condenser coil. Also, be aware of any potential service issues, such as loose casters or legs that appear to be bending.

Install these units on level surfaces, allowing space for air to move across the coils. A lack of air movement will shorten the equipment’s service life.