What are the steps for adding refrigerant from the low-pressure side?
1 Answers
The steps for adding refrigerant from the low-pressure side are: 1. Connect the manifold pressure gauge to the compressor and refrigerant canister, then use the low-pressure manual valve on the manifold pressure gauge to add gaseous refrigerant to the low-pressure side of the refrigeration system; 2. Open the refrigerant canister and loosen the nut on the middle injection hose connected to the manifold pressure gauge until you hear the sound of refrigerant vapor flowing, then tighten the nut to remove air from the injection hose; 3. Keep the refrigerant canister upright, fully open the low-pressure manual valve, and inject refrigerant from the low-pressure side. When the system pressure reaches 0.4MPa, close the low-pressure manual valve; 4. Start the engine, turn on the air conditioning switch, and set both the blower switch and temperature control switch to maximum; 5. Open the manual valve on the manifold pressure gauge to allow refrigerant to continue entering the refrigeration system until the filling amount reaches the specified value; 6. After filling is complete, close the low-pressure manual valve on the air conditioning pressure gauge, shut off the injection valve on the refrigerant canister, stop the engine, and remove the air conditioning pressure gauge.
