When Dave Garvin, manager of customer support, Nortek Global HVAC worked he and his coworkers did not realize the importance of nitrogen purging.
According to Garvin, one of the first questions manufacturers and contracting firm management should ask is.
As it cools, the oxide flakes off to form scale, contaminating filter driers, compressor oils, and valves.
it restricts the flow of refrigerant and the system stops cooling or heating, ..
Garvin does preach the importance of nitrogen purging for contractors and says it's critical step taken every time employee at NGH makes brazed joint...
Harris Products Group, manufacturer of brazing equipment, puts strong emphasis on it during contractor training sessions.
To fix the problem, the distributor or TXV assembly must be replaced or cleaned, and the liquid line filter must be changed...
Problems associated with oxidation formed during brazing is not phenomenon, except it increased in 2010, loosening scale that then circulates through the system.
small hole in cap at the end of the line is needed to allow the nitrogen to escape..
small hole in cap at the end of the line will allow the nitrogen to escape...
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