US 23959-03 | Prepare and purge braze piping for refrigeration and air conditioning

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About this standard This unit standard is for use in training of refrigeration and air conditioning technicians and covers preparation and purge brazing of copper piping up to 25 m m diameter for refrigeration and air conditioning systems. This standard is not intended for use in the appliance servicing industry. People credited with this unit standard are able to: demonstrate knowledge of welding safety relevant to brazing of piping; prepare for purge brazing of piping; and join piping using purge brazing. Show more