Early Warning for "sub-health" of Cold Storage Refrigeration Equipment! Don't Tough It Out with These 6 Abnormal Phenomena!

In the fields of modern cold chain logistics, industrial refrigeration and commercial cold chain, refrigeration equipment, as the core temperature control carrier, its operational stability is directly related to energy efficiency and equipment lifespan. However, the complex refrigerant circulation and mechanical linkage characteristics within the system make the equipment prone to failure due to multiple factors during long-term operation.

Today, let's follow Fland to learn about the common system faults of refrigeration equipment

                                                                                                 Common system faults of refrigeration equipment

01  Return liquid

For refrigeration systems using expansion valves, the return of liquid is closely related to the improper selection and use of expansion valves. Excessive selection of the expansion valve, setting of the superheat too low, incorrect installation method of the temperature sensing bulb or damaged insulation wrapping, and malfunction of the expansion valve may all cause liquid return. When the evaporator is severely frosted or the fan malfunctions, heat transfer deteriorates, and the unevaporated liquid can also cause liquid return.

02  Start with liquid

The phenomenon where the lubricating oil in the compressor bubbles violently is called liquid start-up. The foaming phenomenon during liquid-loaded start-up can be clearly observed on the oil sight glass. The fundamental reason is that a large amount of refrigerant dissolved in the lubricating oil and settled beneath it boils when the pressure suddenly drops, causing foaming of the lubricating oil and easily leading to liquid hammer.

03  Liquid strike

To ensure the safe operation of the compressor and prevent liquid hammer, the suction temperature should be slightly higher than the evaporation temperature, that is, it should have a certain degree of superheat. Under normal circumstances, the suction temperature should be 5 to 10 degrees Celsius higher than the evaporation temperature.

04  Excessively high exhaust temperature

The main reasons for excessively high exhaust temperature are as follows: high return gas temperature, large heating capacity of the motor, high compression ratio, high condensing pressure, and improper selection of refrigerant.

05   High intake temperature

Insufficient refrigerant charge in the system, or too small opening of the expansion valve, clogged filter screen at the expansion valve port, poor insulation of the return gas pipeline or overly long pipeline, etc., will all lead to high suction temperature.

06    The exhaust temperature is too low

The throttle valve or the drying filter is ice-blocked or dirt-blocked, as well as the filter is clogged, and the refrigerant charge is insufficient.

The stable operation of the refrigeration system is the cornerstone for the performance of the equipment. The above-mentioned common faults will reduce the service life of the equipment, affect the refrigeration effect and increase energy consumption. The cold cloud management platform independently developed by Fulande ensures a lower failure rate and more stable operation of your cold storage.

Through AI one-click health diagnosis, subtle changes in cold storage can be perceived, potential risks can be intelligently analyzed, early warnings can be issued, and faults can be remotely diagnosed to prevent small problems from escalating into major ones.

Up to 15 sensors provide all-round monitoring of the system operation and full life cycle management. The ambient temperature, suction temperature, exhaust temperature, condensing temperature, spray temperature, suction pressure, exhaust pressure, voltage, superheat, expansion valve opening degree, and fan speed can all be monitored to prevent the cold storage from operating while faulty.

In case of an alarm, the alarm recipient will be notified via text message, email or voice. The alarm recipient can set it as needed to prevent missing the alarm information.

Fland, safeguarding the safety of your goods!