I recently completed a repair job on a commercial cooler. The unit was not cooling properly, so I took it apart to find the issue. I found that the compressor was not working properly, so I replaced it. I also replaced the condenser coil and the evaporator coil. After replacing the parts, I tested the unit and found that it was cooling properly. I then recharged the system with refrigerant and tested it again. The unit was now cooling at the correct temperature.