SECTION 22: HEATING AND AIR CONDITIONING
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
3.7 TORCH BRAZING
Use electrodes containing 35% silver.
A 3.5% silver low temperature brazing
electrodes can be used on low side pressure
and liquid high side.
CAUTION
When using heat near a valve, wrap with water
saturated rags to prevent overheating of vital
parts.
DANGER
Before welding any part of refrigeration system,
make sure the area is well ventilated.
3.8 SOLDERING
Before soldering any part of the system, make
sure the area is well ventilated. Use (stay clean)
flux sparingly and apply solder (95-5 round wire
1/8 inch [3,1 mm]). After completing repairs, test
for leaks.
When using heat at or near a valve, wrap with a
rag saturated of water to prevent overheating of
vital parts.