The cause of low-pressure failure of small cold water machines for industrial use

Industrial small chillers belong to industrial machinery and equipment, the development of science and technology, but also let the chiller become intelligent, the use of chillers failure, generally there will be a fault code, today's small editor with everyone analysis and solve the cold water machine low pressure failure.
can a low pressure failure of a chiller cause?1, increased energy consumption due to low-pressure empty operation of the compressor, will cause the motor load to become smaller, in the same refrigeration conditions, there is a low-voltage fault of the chiller, will waste electricity.
2, the cooling capacity becomes smaller because the air-conditioner suction pressure is lower, but the return amount is less, the cooling capacity will not reach the target refrigeration, affecting normal use.
are the reasons for the low pressure of the chiller? How to solve it?1, insufficient refrigerant or leakage of insufficient refrigerant, will lead to pressure disorder in the system, resulting in reduced suction pressure, chiller low pressure alarm, equipment stop operation, and refrigerant leakage site, from the compressor, condenser, filter, expansion valve and evaporator and other accessories pipe connection for diagnosis, troubleshooting, fill with the appropriate amount of refrigerant, can be resolved.
process does not understand the operation can contact the chiller manufacturer.
2, the outside temperature is low Outside temperature is low, the cooling water is low temperature start operation, or the frozen oil temperature is too low, the chiller can not be completely separated, will produce low pressure failure.
if the cooling water temperature is too low, you can turn off the cooling tower or thring the cooling water to increase the cooling water temperature.
if the temperature of frozen oil is too low, the cooling unit can be extended warm-up time, frozen oil temperature back to normal can be resolved.
3, the system pipe blocking chiller assembly, it is inevitable that impurities seep into the system, use for a long time, will also cause a variety of impurities into the system, when the filter blockage, refrigerant pass volume reduction, return volume reduction, low pressure failure.
solution, by cleaning filters, condensers, evaporators, to ensure that the system is not blocked, you can relieve the system pipe blockage caused by low-pressure failure.
4, the expansion valve open through the small or damaged expansion valve is the refrigeration system's throttle device, too small will produce a smaller amount of cooling, and through the throttle of the cooling steam is too little, will cause the compressor intake pressure becomes smaller, resulting in the emergence of low pressure failure.
solution, increase the opening of the expansion valve appropriately, or replace the damaged expansion valve.
5, relay failure, electrical system false positive relay plays the role of indirect protection equipment, the normal suction pressure of the compressor is 0.4 to 0.6MPa, when the suction pressure is less than 0.2MPa, it will lead to low voltage protection relay action, cut off the system circuit, equipment stop.
and sometimes low voltage relay, will be due to moisture, open circuit and other faults, resulting in abnormal work, the system reported low pressure.
, check low voltage relays, repair or replace, non-technical personnel can contact the manufacturer to assist in the solution.
normal use of cold water machine reported low pressure failure, generally on the above several reasons, according to the system failure phenomenon, step by step troubleshooting, is conducive to quickly find the cause of the failure, as soon as possible to resume normal production.
in the event of a low pressure failure of the chiller, can be assisted by the chiller manufacturer to solve.