Chaoyang District, Taiwan Road, air conditioning maintenance メ a to メ two メ 4 メ メ 7 to メ 6 メ 8

Chaoyang District, Taiwan Road, air conditioning maintenance メ a to メ two メ 4 メ メ 7 to メ 6 メ 8 






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 Common air conditioning failure phenomenon 
 (1), leakage: refers to refrigerant leaks; Electric (line, body) and insulation damage caused by leakage. 
 (2), block: refers to the cooling system fouling and ice block; clogged air filter; air inlet, outlet obstruction blockage. 
 (3), off: refers to the disconnection of electrical wiring; fuse fuse; due to overheating or overcurrent caused by the contact of the overload disconnect; cooling system pressure is not caused by normal pressure relay contacts to open. 
 (4), burn: refers to the winding of the compressor motor, the windings of the fan motor, solenoid valve coil, the relay coil and contacts are burned. 
 (5), the card: the compressor stuck, fans jammed the moving parts of the bearing stuck. 
 (6), damage: refers to the broken compressor valves, piston galling, fan blade fracture and damage of various components. 

 Common fault diagnosis method 
 The judgment of the common fault of the home air conditioner basic approach is: to see, hear, touch, test, analyze. 
 1, see: careful observation of the various components of the air conditioner work, focusing on observation of the three parts of the refrigeration system, electrical system, air system to determine that they are working properly. 
 (1) Cooling system: observation of each pipe of the cooling system cracks, damage, frost and condensation and other; cooling pipe between the pipe shell with or without touching friction, in particular, the refrigerant pipes welding, the joint connections for leaks, those who leak at oil (a certain amount of refrigerant oil in cooling system), can also be used a clean soft cloth, soft paper wipe pipe welding joints junction to observe whether the oil spill to determine whether there is leakage. 
 (2) Electrical Systems: To investigate whether the electrical system fuse is blown, electrical wire insulation is intact, the circuit board with or without fracture, and the junction with or without loose. In particular, the electrical connection is good contact, terminal screws, connectors can easily loose causing poor contact. 
 (3) Ventilation System: To observe the air filter, heat exchanger coil and fin is too much dust; air inlet and outlet flow; fan and fan is functioning properly; wind is normal size. 
 Listen: power on to listen to the air conditioner compressor running sound is normal, any abnormal sound, the fan operation with or without noise, and whether the noise is too large. The air conditioner in operation, under normal circumstances a slight vibration, less noise, generally in 50DB. If the vibration and noise is too large, the possible causes: 
 (1) improper installation. Such as stent size and units do not match, not tight or increase damping rubber, foam pad, may make the air conditioner running vibration intensified, the noise becomes larger. Especially in the startup and shutdown was the most significant. 
 (2) The compressor vibration. Poor base-mounted, the foot is not level, shockproof rubber or shock springs installed bad or ineffective shock. If the compressor internal malfunction, such as broken valve, liquid impact, also unusual sounds. 
 (3) hitting the fan. The fan blades to poor installation or deformation caused by the sound of the collision. The fan may collide with the wall shell, chassis fan axis traverse, the blade out of balance also issued by the crash; If a foreign body in the fan blades collide with the crash also occurred. 
 Touch: touch the air conditioner parts feel hot and cold, chattering, and to help determine the fault nature and location. Under normal circumstances, the temperature of the condenser from the top down gradually decreased, the lower the temperature slightly higher than the ambient temperature. The entire condenser is not hot or the upper slightly warm than hot but up and down the adjacent two pipe temperature were significantly different, it is not normal. Evaporator under normal circumstances, will dip the fingers of water on the evaporator surface, there will be a cold stick feel. Dryers, the exit of the capillary under normal circumstances should have a warm feeling (slightly higher than the ambient temperature is basically the same as the last paragraph of the pipe with the condenser temperature), if they feel lower than the ambient temperature or surface dew condensation and capillary paragraphs of temperature difference and so on are not normal. From the compressor at the suction pipe of 200MM, under normal circumstances, the temperature and the ambient temperature is almost 
 4, measurements: In order to accurately determine the fault nature and location, and often use the instrument, instrument checks and measure the performance parameters and status of the air conditioner. Such as refrigerant leak detector to check whether the leak; measurements of supply voltages with a multimeter, to meet the requirements of each terminal to current and operation current, computer-controlled air conditioner, but also measure the potential of the various control points. 
 Analysis: After these several examination methods, the results obtained, most of them can only reflect some local state. Between each part of the air conditioner to each other, influence each other, a failure phenomenon may have a variety of reasons, one reason may also produce a variety of failures. Therefore, local factors, a comprehensive comparative analysis, which fully and accurately determine the nature and location of the fault. 


 Company Name: Beijing Tong-hui l Wang Refrigeration Equipment Co., Ltd. 
 Maintenance of green 010 -8124-0768 
 Repair Phone: 010 - 81,240,768 
 Web site: http://www.51kongtiao.com 
 E-mail: bjthsw@126.com