Section 8. Refrigerant Line Leak Check - Trane 4TTR3018–060 Installer's Manual

STEP 5 - Replace the pressure tap valve cores
after the service valves have cooled.

Section 8. Refrigerant Line Leak Check

8.1 Check For Leaks
STEP 1 - Pressurize the refrigerant lines and
evaporator coil to 150 PSIG using dry nitrogen.
STEP 2 - Check for leaks by using a soapy solu-
tion or bubbles at each brazed location.
Remove nitrogren pressure and repair any leaks
before continuing.
18-AC79D1-6-EN
150 PSIG
9