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8.3 Vacuum procedure
•
We recommend to run a leak test with nitrogen to 40 bar
pressure to check the quality of the welding connections
• For the vacuum perform, connect the pump charging
vacuum connection procedure (1/4) inside the external
unit.
•
Perform the vacuum until reaching 0.4mbr pressure
(duration of procedure for about 1 h for 15m total length
connection. If the length increases as result will increase
duration of the vacuum perform).
•
At the end of the procedure remove the pump and open
the valve to pour out the refrigerant liquid.
