The meaning of the liquid pressure system in air-conditioning system. If there is no pressure in the system must have the system zero-Kat using a Vaccuum pump prior to filling liquid into the system.
The meaning of the fluid pressure in the air conditioning system. If there is no pressure in the system, the system must be zero LA. Using Vaccuum pump before the addition of reagents into the system.
The meaning of fluid pressure system in the air conditioning system. If no pressure in the system to make the system as the atmosphere by air Vaccuum pump before the filling liquid into the system.