prerequisite for accurate fluorination
1. the air conditioner repaired must meet its service conditions and installation standards.
2. the air conditioning control system and actuator must be normal; the pipeline system must have effectively eliminated air, moisture, blockage, leakage point, etc; the filter screen and internal and external heat exchangers shall be clean and well ventilated.
3. maintenance tools and materials must be qualified.
4. strictly follow the fluorination process *.
2、 basis and method of accurate fluorination
1. quantitative fluorination: connect the three-way valve, pressure gauge, fluorination hose, fluorine bottle or vacuum pump at the process port of the three-way stop valve. after defluorination and vacuum pumping, start to add fluorine slowly. weigh with more accurate measuring tools such as platform scale. when the reduction of fluorine in the fluorine bottle is equal to the standard fluorine addition on the nameplate of the air conditioner, close the valve of the fluorine bottle.