To allow a flushing agent to work to its maximum ability it must be allowed to circulate the complete refrigerant circuit.
To do this a dedicated flushing pump of suitable power is needed: most commonly available pumps are not suitable, as their construction materials cannot withstand the aggressive flushing agents. The HydroPump from Advanced Engineering is a heavy duty diaphragm pump made of chemically resistant materials. This means that the chemicals never come into contact with the mechanical components of the pump. It has a built in strainer to prevent system debris from entering the pump or re-entering the refrigerant circuit.