2-way valve3-way valve2-way valve3-way valve2-way valve3-way valve2-way valve3-way valveIf the refrigerant of the air conditioner leaks, it is necessary to discharge all theƽ refrigerant. Vacuumize first, thencharge the liquid refrigerant into air conditioner according to the amount marked on the name plate.Please do not let other cooling medium, except specified one (R410A), or airƽ enter into the cooling circulation system.Otherwise, there will be abnormal high pressure in the system to make it crack and lead to personal injuries.Each indoor unit musts to be vacuumed , according to the above steps.ƽƽInstallationsDomestic air conditioner43