Qingdao ‌ open screw chiller system common failure_Common problem_Qingdao cold storage design, installation and maintenance _ Sales of refrigeration equipment_Chiller central air conditioning manufacturers | Sheron freezing-皇冠登录地址app最新版

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Qingdao ‌ open screw chiller system common faults

Release time: 2023-12-08 人气:7356

‌ screw chiller common fault causes quick investigation


1The reason for the unstable fluctuation of oil pressure difference and the low pressure alarm shutdown?
A, less oil;(Low level or false level)
B, coarse filter failure;(filter plug)
C, oil pump failure;(Lack of oil supply due to wear or damage of rotor)
D, fine filter pressure difference;(Fine filter plugging pressure difference is large)
E, see if the pressure sensor is faulty;(injection pressure and exhaust pressure)
F, oil pressure regulator valve failure;(Adjust the pressure regulator according to pressure difference 1.5-3.0Mpa)
2、Evaporator cold scale will have what phenomenon?
A, low suction temperature;
B, low inspiratory pressure;
C, refrigeration efficiency decline;
3、  What will happen to condenser scaling?
A, high exhaust pressure;
B, high exhaust temperature;
C, the condensed ammonia liquid (fluorine liquid) temperature is high;
4、  The reason why there is much oil in the evaporator of the unit?
A, lack of refrigerant, resulting in changes in working conditions;
B, the oil temperature is too low resulting in low oil filling efficiency;
C, oil filler damage or low efficiency;
5、 What happens when there is too much oil in the evaporator?
A, low inspiratory pressure;
B, the refrigeration efficiency is seriously reduced;
C, occasionally compressor suction fluid compression, loud noise, machine wear;
6、What is the phenomenon of oil cooler fouling?
A, the oil temperature can not come down;(High oil temperature)
B, in and out of the water temperature difference is not large;
7、 Reasons for inaccurate ammonia (fluorine) level meter?
A、制冷Too little fluid;
B, liquid mirror glass dirty;
C, refrigeration conditions change dramatically;
D, the liquid level gauge inlet and outlet pipe has air bags or the caliber is too large
8、  What are the phenomena of insufficient refrigerant liquid?
A, low liquid level;
B, low suction and exhaust pressure;
C, open the bypass to see the operation of the unit, whether the suction and exhaust pressure can rise, or low;
D, cooling efficiency decreased
9、Cooling tower fouling phenomenon?
A, the temperature of cooling water can not fall;
B, the dirt on the filler is much;
C, the exhaust pressure and oil temperature are too high
D, the load can not be increased, resulting in protection shutdown。
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