Section 8. Refrigerant Line Leak Check - Trane 4TTA4 Installation And Operation 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 nitrogen pressure and repair any leaks
before continuing.
18-AC108D1-1D-EN
150 PSIG
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