The safety operation steps of a low-temperature refrigeration cycle mainly include equipment inspection, preparation before operation, equipment startup, operation monitoring, and equipment shutdown. It is necessary to strictly follow the regulations to ensure safety. Here are the specific steps:
1、 Equipment inspection
1. Power supply and wiring: Check if the power cord is intact, if the plug connection is secure, and avoid the risk of short circuit.
2. Environmental safety: Confirm that there are no open flames, flammable materials, or corrosive gases around the equipment, and that the ventilation conditions are good.
3. Functional testing: Check if the control panel, switches, and pressure gauges are functioning properly to ensure there are no signs of water or refrigerant leakage.
2、 Preparation before operation
1. Personal protection: Wear safety goggles, gloves, and lab coats.
2. Medium filling: Inject an appropriate amount of coolant (such as thermal oil or deionized water) as required, avoiding the use of water sources containing impurities.
3. Parameter setting: pre-set temperature range and calibrate temperature display accuracy.
3、 Equipment startup and operation
1. Step by step start-up: First turn on the power, then start the circulation pump and observe if the operating status is stable.
2. Temperature control: Real time monitoring of the reaction system temperature, using an automatic control system to prevent overheating.
3. Exception handling: If there is a temperature deviation or alarm, immediately stop the machine for troubleshooting.
4、 Equipment shutdown and maintenance
1. Standardized shutdown: First, close the external circulation valve, then stop the pump, and finally cut off the power supply.
2. Cleaning and maintenance: Regularly clean the radiator, replace the filter, check the seals and pipes.
3. Long term storage: Drain the coolant, keep the environment dry, and avoid direct sunlight.
5、 Key precautions
1. Compatibility: The cooling medium should be compatible with the reactants to avoid corrosion or chemical reactions.
2. Regular maintenance: Develop an annual cleaning plan, with a focus on inspecting components such as condensers and cooling towers.
3. Personnel training: Operators need to be familiar with emergency handling measures, and non professionals are prohibited from repairing.
By following the above steps, it is possible to effectively ensure the safe operation of the equipment and extend its service life.