¿Cómo realizar vacío al sistema?

• Objetivo de hacer vacío. Hay que recordar que el objetivo del vacío es eliminar la presencia de humedad y de gases no condensables del sistema.
• Nivel de vacío adecuado. 500 micrones, si se trabaja con aceite mineral o aceite alkilbenceno. 250 micrones, si se trabaja con aceite polioléster. Cuando se llegue al vacío respectivo se debe esperar que el vacuómetro mantenga la lectura, al menos 15 minutos. Si el vacío se empieza a perder, se tiene fuga en el sistema. Se tendrá que proceder nuevamente a encontrar la fuga.
• Capacidad de bomba. 1 CFM me sirve para evacuar un equipo de 7 toneladas de refrigeración. Por ejemplo un equipo de 40 toneladas necesita una bomba de 6 CFM´s de capacidad.
• Procedimiento correcto. Para poder hacer el vacío y eliminar rápidamente la humedad, se puede valer de ciertos procedimientos sencillos de ejecutar.

How to make empty the system?

Goal of making empty. Remember that the purpose of the vacuum is to eliminate the presence of moisture and non-condensable gases in the system.

Suitable vacuum level. 500 microns, when working with mineral oil or alkylbenzene oil. 250 microns, if working with polyolester oil. When it comes to the respective vacuum should be expected to keep the vacuum gauge reading at least 15 minutes. If vacuum begins to lose, you have leakage in the system. It will have to come back to find the leak.

Pump capacity. 1 CFM helps me to evacuate a crew of 7 tons of refrigeration. For example, a team of 40 tons needs a pump 6 CFM's capacity.

correct procedure. To make the gap and quickly remove moisture, it may be of some simple procedures to execute.

The first is to do a sweep with nitrogen gas to expel as much moisture as possible, basically blowing it out of the system, since the hydroscopic dry nitrogen is used.

The second is, when you start the vacuum process, it is done on both sides of the manifold, the pump is connected to the center, and must remain open both valves, high and low pressure.

The third is heating the system with lamps, to increase the temperature of the pipes, evaporators, condensers. For the moisture to evaporate