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First, turn on the air conditioner and set it to cooling mode so that the outdoor unit enters normal operation (open the indoor unit panel, remove the filter screen; if partial condensation or frost is found on the evaporator, this is actually due to insufficient refrigerant).
Loosen the small nut on the triangular valve connecting the outdoor unit and the refrigerant pipe. Note that Copeland compressors have significant differences in performance under high-temperature and low-temperature conditions; pay attention to their specifications when selecting.
Connect the refrigerant charging hose (use a fluorocarbon charging hose to connect the refrigerant cylinder, pressure gauge, and charging port, then purge air from the hose).
During refrigerant injection, the operating pressure should generally be maintained within 4.5-5.5 MPa.
After completion, tighten the nut and close the components properly. Most faults in Copeland compressors are also caused by refrigerant deficiency, which needs to be addressed promptly.
When charging refrigerant, there are some precautions. For example, during the process, start by adding refrigerant from the high-pressure side pipeline and stop when no more can be added. Since Copeland compressors have a good reputation, when charging from the high-pressure side, the air conditioner compressor must not be running, and then the high-pressure gauge valve should be closed.
First, turn on the air conditioner and set it to cooling mode so that the outdoor unit enters normal operation (open the indoor unit panel, remove the filter screen; if partial condensation or frost is found on the evaporator, this is actually due to insufficient refrigerant).
Loosen the small nut on the triangular valve connecting the outdoor unit and the refrigerant pipe. Note that Copeland compressors have significant differences in performance under high-temperature and low-temperature conditions; pay attention to their specifications when selecting.
Connect the refrigerant charging hose (use a fluorocarbon charging hose to connect the refrigerant cylinder, pressure gauge, and charging port, then purge air from the hose).
During refrigerant injection, the operating pressure should generally be maintained within 4.5-5.5 MPa.
After completion, tighten the nut and close the components properly. Most faults in Copeland compressors are also caused by refrigerant deficiency, which needs to be addressed promptly.
When charging refrigerant, there are some precautions. For example, during the process, start by adding refrigerant from the high-pressure side pipeline and stop when no more can be added. Since Copeland compressors have a good reputation, when charging from the high-pressure side, the air conditioner compressor must not be running, and then the high-pressure gauge valve should be closed.
