Pressure gauge block with three valves. 1 - low pressure valve, 2 - central valve, 3 - high pressure valve, 4 - high pressure line quick-release adapter, 5 - low pressure line quick-release adapter.
Pressure gauge block with two valves. 1 - low pressure valve, 2 - central valve, 3 - high pressure valve, 4 - high pressure line quick-release adapter, 5 - low pressure line quick-release adapter.
2. Wrap the free end of the central hose with a rag.
3. Open the central valve.
4. Open the high pressure valve slightly and release the refrigerant. Caution: If the high pressure valve is fully opened, the oil from the vacuum pump will enter the refrigerant circulation system, which may cause a decrease in the efficiency of the air conditioner.
5. When the pressure value in the high pressure line reaches 0.98 MPa, slightly open the low pressure valve and bleed the refrigerant until the pressure in the high and low pressure lines is 0 MPa.
[You will find the original on the portal HondaBook.ru]