The hydraulic system can be checked by the hydraulic method (water) or (manometric tests) – air. Hydraulic tests are carried out before the onset of frosts, because warm water cools down, and therefore it is very difficult to comply with all the necessary test conditions. In addition, there is a danger that a certain amount of water will remain in the system and may freeze, thereby damaging the water system. Even the purge of the system with compressed air does not guarantee the possibility that the water in the system will still remain. Therefore, it is recommended to check the system in the winter in the winter.
Air tests are not as accurate as hydraulic, this is due to the fact that the air heats up significantly in compression and gradually cools, which can cause the occurrence of pressure surges. In order to increase air pressure in the system, the most ordinary compressors are used. In large systems, manometric tests are carried out for a very long time, since it takes time to fill the system with compressed air. Such tests are recommended in small and simple systems. Manometric tests check cold, warm water supply and heating systems.
