Fault Diagnosis and Emergency Treatment of Lithium bromide Chiller
Common faults of Lithium bromide water chiller include Lithium bromide solution crystallization, refrigerant water pollution, unit vacuum rebound, unit poor refrigeration effect, burner fault, etc.
The emergency response measures for faults are: if a unit malfunctions and shuts down, timely cut off the heat source, and lock in the cause of the fault through the unit alarm record.
At present, the automatic control of Lithium bromide water chillers is equipped with a safety protection control system. Generally, if the unit detects abnormal operation data during operation, it will give a feedback of the result data on the unit computer, which can be divided into two types: one is predictive alarm, such as high cooling water temperature spot check, vacuum degree spot check, high solution concentration, etc. The alarm unit can also work normally without direct shutdown, But there are certain hidden dangers; The other method is to directly alarm and shut down.
If a predictive alarm occurs in the unit, users can compare the unit operation data themselves, investigate and handle the cause of the unit alarm, and then restore normal operation.
If the unit alarms and stops directly, first cut off the heat source and turn off the cooling tower fan. After the chiller is fully diluted and stopped, based on the alarm content, such as low cold water flow rate and high cooling water temperature, preliminarily determine the cause of the shutdown and solve the problem before restarting the chiller. If the refrigeration unit is unable to restart or if the alarm persists after restarting, immediately contact maintenance or after-sales personnel to handle the unit issue under their guidance.
Generally speaking, when there is no significant change in the temperature difference (i.e. refrigeration capacity) between the inlet and outlet of the chiller's cold water, the unit is in normal operation.
When the refrigeration capacity of the unit gradually decreases or even loses, even if the unit operates normally without an alarm, it indicates that the refrigeration unit has malfunctioned.
At this point, first check the vacuum of the unit and turn on the vacuum pump to observe the air output; Secondly, check the liquid level of the unit's absorber and evaporator to see if there is a significant increase or decrease.
If there is an abnormal increase in the evaporator liquid level, and the vacuum degree of the unit is confirmed to be normal, the refrigerant water side valve can be opened. If there is no significant change in the liquid level in the evaporator after a period of time or the liquid level continues to rise, it is necessary to immediately dilute and stop the machine while closing the inlet and outlet valves of cold water and cooling water.
If the liquid level in the absorber drops abnormally and accompanied by the sound of the solution pump suction, the vacuum level of the unit should be confirmed in a timely manner, and the unit should be shut down for dilution and restarted. If the problem cannot be solved, please contact after-sales personnel in a timely manner.
Through the safety protection automatic control system and operation data monitoring of the unit, the vast majority of unit faults can be detected. The core idea of emergency response is to safely shut down, timely feedback on fault phenomena, and avoid further damage to the unit.
Lithium bromide solution manufacturer
About us
Flier Refrigeration Engineering Technology Co., Ltd is a professional technical service enterprise integrating central air-conditioning host sales, spare parts sales, unit repair and maintenance.
Factory located in Zhenjiang, Jiangsu, covering an area of 25,000 square meters ,and has been built with 1 R&D center, 1 pilot plant, 3 An innovative production, learning, and research base composed of a professional production workshop and its corresponding infrastructure. At present, the company has become a well-known technical service provider in the field of central air conditioning in China.
The company’s main business scope includes: central air-conditioning maintenance, cleaning and technical services; cooling tower and fan coil cleaning and maintenance services; custom processing of lithium bromide solution; sales of lithium bromide solution special impurity separators; central air-conditioning host and various zero Sales of accessories; installation and sales of central air conditioning systems, etc.
Contact us
Ms. Lillian GUO
Zhenjiang FLIER Refrigeration Engineering Technology Co., Ltd
Jiangsu, China
Tel: + 86 15358588768(Whatsapp)
Wechat：15358588768
E-mail: mdguolijuan@zjflier.com
