The 2.5 vertical air conditioner is filled with fluorine at most 5 pressures, generally 3-4 pressures are filled first, and then slowly added. Snow seeding steps:
1, separate the pipeline, connect the copper pipe, the general compressor of the low pressure pipe and the copper pipe left and right connection, and then welding the copper pipe, and finally at the outlet end set a good copper. Then expand the horn.
2. Connect the pipeline and the vacuum pump, check whether the pipeline is leaking, vacuum first, and then inject 2Mpa nitrogen, and keep the pressure for 2-3 days. Leak detection, if 3 days later, the pressure does not change, you can add refrigerant.
3, open the valve, discharge nitrogen, when the pressure is 0, start the vacuum pump, vacuum to -0.1Mpa, and then turn off the vacuum pump. Install the bottle opener on the refrigerant bottle, connect the filling pipe and pressure gauge.
4, Use a bottle opener to break the freon, release a little refrigerant, to flush the remaining little air inside the pipeline, open the electronic scale, put the refrigerant on the electronic scale, look at the weight, and write it down, at this time must remember this position, do not move, start the refrigerator, start fluoridated, the general refrigerant filling amount of about 50 grams, can start to use liquid Note, that is, put the freon bottle upside down, add more than 30 grams, and then put it back to the marked place, slowly fill with gas, always pay attention to the display of the electronic scale, about 3-5 grams more than the nominal value can be stopped, turn off the valve, use the sealing pliers, at the distance of the low-pressure pipe 5-10cm place to flatten the copper pipe, and then cut the pipe with a cutter. At this time, you can power off the refrigerator and stop running.