DC Inverter Multi
VRF Service Manual
115
owing into the pipe when welded piece is laid aside.
f. Quality and inspection of braze welding
Welding seam should have smooth surface. Fillet should be even and full with natural arc transition. Braze welding
connector should be free from defects such as over-burning, welding blockage, crack, rough surface of welding seam and
burning through. Welding seam should be free from defects such as pore, slag inclusion, underll, rosin joint and overlap.
Weld spot
5.7.5 Others
When braze welding is to be performed underneath, a simple support shall be built, such as two ladders.
Solder
Solder
Solder
Weld torch
Weld torch
Weld torch
Downward
Upward
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