Wuxi Guanya Refrigeration Technology co., ltd

Common Faults and Cause Analysis of Air Cooled Chiller

During the use of air-cooled chiller equipment, it is inevitable to encounter some common faults. Users need to understand the possible causes of faults and make corresponding solutions in time, so as to make the production and operation more stable. So, what are the common faults of air-cooled chillers?


1. The inlet and outlet water temperature difference is small
When users encounter a small difference in inlet and outlet water temperature when using air-cooled chillers, the general reasons are as follows.
First, the output cooling capacity of the chiller is small, such as the equipment itself is faulty or not fully loaded. We suggest that in these cases, the user can make a preliminary judgment by observing the operating current and other parameters of the chiller.
Second, the heat transfer effect of the equipment is not good. For example, the scaling of the heat transfer pipe is serious, which affects the heat exchange of the chiller. Users can judge by observing the heat transfer temperature difference between the water temperature and the evaporation temperature.
Third, the water flow is too large. Users can judge by observing the inlet and outlet water pressure difference of the evaporator and the running current of the water pump. In addition, if the above problems are eliminated, the user can check whether the sensor or thermometer is accurate.

2. Communication failure
It is understood that the computer controller controls each module through the communication line and the general interface board. The main cause of communication failure is poor contact or open circuit of the communication line, especially poor contact caused by damp and oxidation of the interface. In addition, failure of unit electronic board or general interface board, improper selection of address dial switch and power failure can cause communication failure.

3. High voltage fault
When the discharge pressure of the compressor is too high, it is easy to cause the action of the high-voltage protection relay. If the pressure is too high for a long time, it will lead to excessive operating current of the compressor, easy to burn the motor, and easy to damage the valve plate at the exhaust port of the compressor.
So, under what circumstances will high voltage fault occur? It mainly includes: high cooling water temperature and poor condensation effect. The cooling water flow is insufficient to reach the rated water flow. Condenser fouling or blockage. Excessive refrigerant charge. The refrigerant is mixed with non condensable gases such as air and nitrogen. False alarm caused by electrical failure.

4. Low voltage fault
When the suction pressure of the compressor is too low, it will cause the low pressure protection relay to act. It is understood that the causes of low pressure failure are: insufficient refrigerant or leakage. Insufficient refrigerant water flow. Blocked evaporator and poor heat exchange. False alarm caused by electrical failure. The outside temperature is low.

In addition to understanding the above fault causes, users should also pay attention to the maintenance of the equipment after using the chiller, so as to ensure the extension of the service life and stable operation of the equipment.
Related News
  • 2020 CPhI China The 20th World Pharmaceutical Raw Materials China Exhibition

    2020 CPhI China The 20th World Pharmaceutical Raw Materials China Exhibition

    December 17, 2020December 16-18 Booth number: W5P08 Shanghai New International Expo Center (Pudong)view
  • 483Meet Your Dream Equipment for Distillate CBD Extraction

    483Meet Your Dream Equipment for Distillate CBD Extraction

    February 6, 2021If you need equipment to distill CBD, you need to scrutinize your choices, as the equipment can vary in its features and design. When you use equipment that produces a CBD distillate, you want to seek out a system made by a manufacturer that provides proven and reliable products. You should also work with a business that can train you on the use of the equipment you buy.view
  • Won the second place in the 2022

    Won the second place in the 2022

    December 5, 2022On November 18, 2022, it was sponsored by the Jiangsu Provincial Association for Science and Technology, the Provincial Taiwan Affairs Office, the Provincial Department of Industry and Information Tec...view
  • LNEYA won the title of Jiangsu Provincial Gazelle Enterprise in 2022

    LNEYA won the title of Jiangsu Provincial Gazelle Enterprise in 2022

    January 13, 2023Recently, the Jiangsu Provincial Productivity Promotion Center officially released the evaluation results of the unicorn enterprises and gazelle enterprises in 2022 in Jiangsu and the high-tech zone, ...view
  • Approaching LNEYA 5 Main Products

    Approaching LNEYA 5 Main Products

    January 11, 2018Industrial Chiller:Industrial Chiller varies from dynamic temp. Special Chiller:Special Chiller consist of Multi-reactor chiller (TCU).Environmental Chamber:The test object is connected to a testing adapter. Industrial Freezer:Industrial freezer consist oview
  • The Analysis Of Ultra Low Freezer'S Price

    The Analysis Of Ultra Low Freezer'S Price

    July 4, 2018What are the characteristics and functions of ultra low freezer: 1. Ultra low freezer can prevent the precision of machine equipment from being influenced by the change of oil temperature in the proce...view
Related Products
  • SLJ -110℃~-150℃

    SLJ -110℃~-150℃

    January 11, 2018Temperature ranges from - 5 ~ - 150 ℃, can meet different temperature; Adopt environmental protection refrigerants; Famous brand semi-closed piston compressor, semi-closed bipolar piston compressor, semi-hermetic screw compressor, main brand are BOCK.view
  • Single Fluid Heat Transfer System SR

    Single Fluid Heat Transfer System SR

    April 10, 2018Working temperature range from -25℃to 200℃, other temperature range need to set to the widest temperature range(-50℃to 250℃) Centralized control of 2~20 reactors, each reactor's and jacket temperature can be set independently. One system control multipleview
  • Reactor Temperature System ZLF

    Reactor Temperature System ZLF

    April 10, 2018A set of cooling heat exchanger, heat exchanger, through proportional adjusting valve control cold heat into the heat exchanger, then through the uniform medium input to the reactor jacketed to do heat exchange and temp. Control, system has inside expansiview
  • LT -45℃~30℃

    LT -45℃~30℃

    April 10, 2018Low Temperature Cooling Chiller LT model: LT-5018N,LT-5040N,LT-5062N,LT-5090N,LT-50A1N,LT-50A2N;view
  • TES -45℃~250℃

    TES -45℃~250℃

    February 28, 2019-45℃~+200℃ 2.5kW~25kW ±0.3℃view
  • TES  -85℃~200℃

    TES -85℃~200℃

    February 28, 2019Temperature control range:-85 ° C ~ 200 ° CPower range:2.5kW~25kWTemperature control accuracy:±0.3°CModelTES-8525WTES-8555WTES-85A10WTES-85A15WTES-85A25WTemp. Range-85℃~200℃-85℃~200℃-85℃~200℃-85℃~200℃-85℃~200℃Heating P...view
products
Contact US
Tel: + 86 18751545184
E-mail: sales@cnzlj.com
Add: No.203, Hongyun Road, Hongshan Street, Optoelectronics Park, Xinwu District, Wuxi City, Jiangsu Province, China
code chat