DC INVERTER MULTI VRF INSTALLATION
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Welding seam should have smooth surface. Fiilet 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, underfill, rosin joint and overlap.
5
）Others
When braze welding is to be performed underneath, a simple support shall be built, such as ◆
two ladders.
◆Braze welding shall be easy to operate downward or in transverse direction. In upward
operation, brazing filler metal is prone to fall so that high skills are required.
Weld spot
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