Walk In Cooler Compressor Turning On And Off

The walk in freezer or walk in cooler is a major part of many convenience stores cafeterias and restaurants.

Walk in cooler compressor turning on and off.

The compressor is a coplanad. The refrigerant is r 22. The inside temperature of the freezer determines when the thermostat sends the signal to power the compressor. What i found is when i turn on the walk in cooler the compressor runs for approx 3 seconds and then shuts off although the blower fan continues to run.

If anyone can give me some advice that would be much appreciated. The compressor provides the power behind the cooling function of the freezer. Hi all the compressor of a walk in cooler is acting strange. It keeps turning off and on in repeated short cycles.

Now it is still cooling and running for the most part the compressor starts up and a couple seconds later it shuts off the compressor. I checked the section pressure and it read 60psig. Each time the compressor starts oil is pumped out but without sufficient run time the oil stays out in the system and does not return to lubricate the compressor. I got it to run fine by dropping the box temp at the thermostat to 20 to 10 it is keeping the box between 5 to 7 it ran like that working fine for 2 days now the compressor is turning on and right back off it.

The evaporator fans continue to run. Was only able to check the refridgerant on the high side due to the suction side being locked up. The condenser fans are both locked up on the outside. I m not sure what is going on.

Model number fja b301 tfc 010 with 404 refrigerant 3 phase. This was a service call on walk in freezer that wasn t cooling. I found that the unit had a tripped head pressure controller and a condenser fan motor that w. It is also a big energy user but is rarely even thought of until an issue happens.

The fans in the walk in cooler should always be running. This imbalance will lead to a shortage of oil inside the compressor and bearing failure 1. I don t know if the problem has to do with the refrigerant or not. When the temperature reaches 35 degrees 40 degree set point minus 5 degree differential the thermostat cuts the compressor and the condenser fan motor off.

Next check for a clean coil and clear drain line. Heat is absorbed through the walls from door openings and from the product. Walk in cooler and freezer problems like compressor failure and failure to maintain pressure can result in costly loss of products inside the cooler.