COMPRESSOR DIAGNOSTIC AND PROTECTION SYSTEM AND METHOD

摘要

A method is provided that includes installing a compressor in a refrigeration system and determining a condenser temperature difference using processing circuitry. The method also includes checking for an overcharge condition or a condenser fan blockage condition when the condenser temperature difference is greater than a high condenser temperature difference value. The method also includes determining a discharge superheat temperature using the processing circuitry and checking for the overcharge condition or the condenser fan blockage condition when the condenser temperature difference is less than the high condenser temperature difference value and the discharge superheat temperature is less than a low discharge superheat temperature value. The method also includes checking for an undercharge condition or an evaporator fan blockage condition when the condenser temperature difference is less than the high condenser temperature difference value and the discharge superheat temperature is greater than a high discharge superheat temperature value. The method also includes completing installation of the compressor when the condenser temperature difference is between the high condenser temperature difference value and the low condenser temperature difference value and the discharge superheat is between the high discharge superheat temperature value and the low discharge superheat temperature value.

主权项

1. A method comprising:
installing a compressor in a refrigeration system; determining a condenser temperature difference using processing circuitry based on data received from a first sensor that monitors at least one of a compressor current and a compressor voltage of the compressor and from a second sensor that monitors a discharge line temperature of the compressor; comparing the condenser temperature difference with a predetermined condenser temperature range having a high condenser temperature difference value and a low condenser temperature difference value; checking for at least one of an overcharge condition and a condenser fan blockage condition when the condenser temperature difference is greater than the high condenser temperature difference value; determining a discharge superheat temperature using the processing circuitry based on the data received from the first sensor and from the second sensor; comparing the discharge superheat temperature with a predetermined discharge superheat range having a high discharge superheat temperature value and a low discharge superheat temperature value; checking for at least one of the overcharge condition and the condenser fan blockage condition when the condenser temperature difference is less than the high condenser temperature difference value and the discharge superheat temperature is less than the low discharge superheat temperature value; checking for at least one of an undercharge condition and an evaporator fan blockage condition when the condenser temperature difference is less than the high condenser temperature difference value and the discharge superheat temperature is greater than the high discharge superheat temperature value; and completing installation of the compressor when the condenser temperature difference is between the high condenser temperature difference value and the low condenser temperature difference value and the discharge superheat is between the high discharge superheat temperature value and the low discharge superheat temperature value.