Module 5 Compressors and Tubing Matintenance CDC

copper tubing in HVAC systems

refrigerant and fluid transport for durability, flexibility, resistance to corrosion

incorrect cutting

can leave burring or deform the tubing, improper bending, lead to kinks and restriction that disrupt flow

flare fitting

used in refrigerant systems create seal by compressed flaring end of tubing, against a fitting

swage fitting

expand the tubing end to fit over another tube creating a seam less joint often used in brazed connections

compression fitting

use a ferrcole and nuts compress tubing, against a body form tight seal without need for flaring or swagging

proper torque setting

apply correct torque ensure fitting secure tightened without damaging tubing over compressing the seal

under tightening

may results in leaks

over tightening

damage thread or distort the tubing compromising connection create a flare, form the flare, assemble and tighten, prepare the tubing expand the tubing, join the tubes, assemble fittings, tighten the nuts

soldering

performed at lower temperatures (below 840 F) using softer filler metals like lead free solders or sliver alloys

Brazing

performed higher temperatures (above 840 F) using stronger filler metals like copper phosphorus or sliver brazing alloys

Good solder

no crack between pipes and fittings

Bad solder

cracks shows between pipes and fittings