Fault alarm of Dole oil and gas recovery refrigeration department

The fault alarm is caused by frost blockage of the secondary heat exchanger. The primary heat exchanger is greatly increased because the secondary heat exchanger has no cooling load, and the temperature of the refrigeration pipeline is too high. Exhaust gas enters a large amount of wet air, resulting in more water in the low-temperature condensation equipment, resulting in freezing. Therefore, the equipment must be equipped with a defrosting system to prevent shutdown due to frost.