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Huace Electric Technology
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Four major failures prone to explosion-proof air conditioners during operation

Author: admin Published date: 2019-05-31 dimensional code sharing

Explosion-proof air-conditioning is a more commonly used refrigeration system, and any one of the equipment will run down for a long time, and explosion-proof air-conditioning is no exception. Because explosion-proof air-conditioning is used in a special place, the problem of explosion-proof air-conditioning can not be ignored. 陕西防爆风机空调安装 就来跟您分享一下防爆空调通常会发生的四大故障。 Today Shaanxi explosion-proof fan air conditioner installation will come to share with you the four major failures that explosion-proof air conditioners usually occur.

陕西防爆风机空调安装

The four major failures that usually occur in explosion-proof air conditioners are:

1. The refrigeration system is blocked:

It often occurs at the capillary and drying filter, because these two places are in the system. In narrow places, there are three common causes of plugging: dirty plugs, ice plugs, and welding plugs.

A. Dirty blockage generally occurs at the inlet of the capillary tube. It is due to the dirt in the system (such as welding slag, rust scale, oxide scale, etc.) blocking the pipeline. Gently tapping the capillary tube during inspection may temporarily return to normal. In addition, the location and nature of the blockage can be judged from the condensation and frost on the surface of the pipes and components, and the pressure recovery speed time during shutdown.

B. Ice blocking generally occurs at the exit of the capillary. It is because the system contains moisture, which is condensed into small ice particles due to sudden vaporization and cooling at the exit of the capillary. It is blocked at the exit of the capillary with a welding torch. The normal or improvement indicates ice blockage, or the machine can be cooled for a while after the air conditioner is turned off, indicating that it is ice blockage. Ice blockage generally occurs on newly installed or newly repaired air conditioners.

C. Welding plugs generally occur at the welding place of capillaries. The phenomenon is similar to dirty plugging and ice plugging, and most of them occur on new installations.

2. Leakage of refrigeration system:

The carrier of air-conditioning cooling and heating is refrigerant. If there is a leak in the system, the refrigerant leaks, or the air-conditioning has poor or no refrigeration at all, and the places where the air-conditioning leaks are mainly concentrated in the welding heads, capillary welding points, and compression of the two devices. The machine's suction and exhaust pipe, bell mouth, copper and sodium cracks, connecting pipes, etc., should be visually inspected before the inspection, focusing on the joints of the connecting pipes, generally there are oil traces at the leak.

3.Four-way valve failure:

Usually occurs when heating, the four-way valve sucks badly, bleeds or gets stuck, causing poor heating performance. When judging, you can listen to whether the four-way valve is powered on and off, and check whether the suction is good. Apply power to the four-way valve or gently tap the four-way valve to reset it.

4.Check valve failure:

The one-way valve is directly conductive during cooling, but the refrigerant must pass through the auxiliary capillary during heating. When the one-way valve is not tightly sealed or the auxiliary capillary is blocked, heating is affected. Therefore, if the air conditioner is normal but heating When poor, check the check valve after removing the problem of the four-way valve.

In view of the above common failures of explosion-proof air conditioners, we recommend that operators of explosion-proof air conditioners can inspect the refrigeration system and perform repairs according to actual conditions. Then, when the explosion-proof air-conditioning refrigeration system fails, the main points of its maintenance are:

1. Observe the working condition of the internal and external machines: such as the display of the indicator board, whether the internal machine is working, whether the wind speed output is normal, and whether the external machine fan and compressor are running, so as to determine whether it is an electrical problem or a system problem that is not cooling.

2. Test various data of air conditioner:

A. The condition of the water flowing in the air conditioner. Generally, the continuous drip air conditioner inside the machine is normal, but it can only be used as a reference value due to the influence of ambient humidity and temperature.

B. The temperature difference between the air inlet and the air outlet. The normal temperature difference between the air inlet and outlet should be 12-14 degrees, but it will also be affected by the ambient temperature and wind speed.

C. Measure the pressure of the system pipeline. Generally, the low-pressure pressure is 0.45Mpa-0.50Mpa during cooling, and the high-pressure pressure is 1.8Mpa-2.2Mpa during heating, but the pressure is affected by the ambient temperature. The higher the air-conditioning inlet temperature, The higher the exhaust pressure, the higher the condensation temperature, and vice versa; the larger the air conditioning load, the higher the suction pressure, and the higher the evaporation temperature (the normal evaporation temperature of the evaporator is between 5-7 degrees).

I briefly share with you the four major faults that are prone to occur during the operation of explosion-proof air conditioners. I hope everyone can pay attention to it. When you find a problem, you must find a solution in time. The premise is to check and troubleshoot according to the standard operation. For more information, please pay more attention to Shaanxi explosion-proof fan air-conditioning installation.

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Shaanxi Huace Electric is an explosion-proof electrical manufacturer. The main products are Shaanxi explosion-proof power distribution cabinets, explosion-proof fan air conditioners, explosion-proof electrical appliances, explosion-proof power distribution boxes. It integrates production, sales and installation in one. The products are widely used in petroleum, chemical, pharmaceutical, textile , Brewing, aerospace, military, fire protection and other fields, with rich production experience, strong technical force, high-quality staff, adhere to scientific and technological innovation, scientific management, guarantee product quality, and reasonable price, welcome everyone to consult.

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