Refrigeration maintenance these common fault, you know?

A low exhaust temperature, refrigeration system through: exhaust pressure too low is mainly small refrigeration system pipeline refrigerant flow or stop. Exhaust pressure is too low, although the phenomenon is on the high side, but the reason prolific in low pressure side. Exhaust pressure too low reasons: 1, the inflation. 。 。

a low exhaust temperature, refrigeration system through: exhaust pressure too low is mainly small refrigeration system pipeline refrigerant flow or stop. Exhaust pressure is too low, although the phenomenon is on the high side, but the reason prolific in low pressure side. Exhaust pressure too low reasons: 1, the expansion valve hole blockage, reduce or even stop for fluid volume, the suction, exhaust pressure decreases. 2, expansion valve ice blocking or dirty plugging and filter blockage etc. , will make suction, exhaust pressure drops;

2, the liquid cooling system 1, for small refrigeration system using the capillary: add fluid volume will cause the liquid. Evaporator frosting severe heat transfer or the fan has failed, did not cause the liquid evaporation of liquid. Frequent temperature fluctuations can also cause expansion valve failure caused by the liquid. 2, for the use of expansion valve cooling system: the liquid is closely related to the expansion valve selection and improper use. Expansion valve selection is too large, superheating temperature setting is too small, heat damaged package installation method is not correct or thermal insulation bandaging, expansion valve failure may cause the liquid. For the liquid is difficult to avoid the refrigeration system, control installation of gas liquid separator can effectively prevent or reduce the harm of the liquid.

high suction temperature refrigeration system: 1, other causes suction temperature is too high. If the back to the gas pipe insulation is bad or pipe is too long, can cause suction temperature is too high. Under normal circumstances the compressor cylinder head should be a cool half, half heat. 2, filled volume of the refrigerant in the system. Or expansion valve opening through small, cause enough system refrigerant cycle, into the evaporator cooling less dosage, degree of superheat, and breathe in high temperature. 3, expansion valve filter clogging. Enough for fluid within the evaporator, reduced the volume of refrigerant liquid, evaporator is part of the occupied by superheated steam, so breathe in temperature.

3, 1, should avoid inhaling liquid impact temperature too high or too low. Suction temperature is too low, the refrigerant in the evaporator evaporation incomplete, both in thermal efficiency, reduce the evaporator of wet steam inhalation and liquid impact will form the compressor. Suction temperature under normal circumstances should be 5 ~ 10 ℃ higher than the evaporation temperature. 2, in order to guarantee the safety of the compressor operation, prevent to produce liquid impact phenomenon, suction temperature a little higher than the evaporation temperature, which should have a certain degree of superheat.

4, liquid cooling system when start 1, liquid start foaming phenomenon can be observed clearly on the oil sight glass. The root cause is dissolved in the oil and sink under the lubricating oil a large amount of refrigerant, when pressure suddenly drops suddenly boiling, and cause the foaming phenomenon of lubricating oil, it is easy to cause fluid. 2, the compressor crankcase heater installation ( Electric heater) Can effectively prevent refrigerants migration. Short downtime, maintain the crankcase heater power. For a long time without downtime, heated the oil before starting the several or a dozen hours. Install on the road back to the trachea gas-liquid separator, can increase refrigerant migration resistance, reduce the amount of migration.

five, the refrigeration system in oil return 1, lack of oil will cause serious insufficient lubrication. The root cause of the lack of oil is not the compressor oil how much and how fast, but the system back to oil is not good. Install oil separator can quickly back to the oil, prolonged compressor without oil removal. 2, when the compressor is higher than the location of the evaporator, there is no oil return bend vertical muffler. Oil return bend to as compact as possible, to reduce the remaining oil. Spacing between oil return bend to the right, the number of oil return bend is more long, should add some lubricating oil. 3, compressor frequently. Compressor frequent start against oil return, due to the continuous operation time is short the compressor stopped, back to endotracheal had no time to form a stable high-speed airflow, lubricating oil can only stay in the line. Oil return less than the oil, the compressor will be short of oil. Shorter operation time, the longer the pipeline, the more complex system, oil return problem becomes more prominent.

6, evaporation temperature cooling system had a greater influence on the low evaporation temperature on the cooling efficiency, every reduce 1 degree, making the same amount of cold power may be increased to 4%. So in situations where conditions permit, raise the evaporation temperature, is beneficial to improve the efficiency of refrigeration, evaporation temperature generally lower than the outlet temperature 5 ~ 10 degrees. Blindly can reduce evaporation temperature while refrigeration temperature difference, but the refrigerating capacity of the compressor is reduced, so the cooling speed not fast. And evaporation temperature is lower, the lower the refrigeration coefficient, the load is increased, prolong operation time, power consumption will increase.

Arkool is the leading manufacturer of air conditioner capacitor and related products.

We are an experienced supplier of and have gained good reputaion among global customers. With a wide range of in offer, we can customize according to your requirement. Send us your enquiry at Arkool Refrigeration.

If something seems too good to be true, then it can be a , which provides start capacitor suppliers value over its cost.

We afford not only the best product but also the comprehensive service, satisfy the customer's demands.