Bard PH1236 - Manual (Page 19)

Manual 2100-344
Page
17
SUCTION AND DISCHARGE TUBE
BRAZING
Compliant Scroll compressors have copper plated steel
suction and discharge tubes. These tubes are far more
rugged and less prone to leaks than copper tubes used on
other compressors. Due to different thermal properties of
steel and copper, brazing procedures may have to be
changed from those commonly used.
• To disconnect: heat joint Areas 2 and 3 slowly and
uniformly until braze material softens and the tube can
be pulled out of suction fitting. (See Figure 10.)
• To connect:
– Recommended brazing materials: silfos with
minimum 5% silver or silver braze material with
flux.
– Reinsert tube into fitting.
– Heat tube uniformly in Area 1 moving slowly to
Area 2. When joint reaches brazing temperature,
apply brazing material. (See Figure 10.)
– Heat joint uniformly around the circumference to
flow braze material completely around the joint.
– Slowly move torch into Area 3 to draw braze
material into joint. (See Figure 10.)
– Do not overheat joint.
MIS-1179
FIGURE 13
BRAZING DIAGRAM