Fisher & Paykel RX256DT4X1 FP Service Manual page 96

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2. Open valves on nitrogen cylinder and gauge manifold. Allow pressure to build within sealed
system.
3. Check for leaks using leak detection fluid.
If a leak is detected in a joint, do not to attempt to repair by applying additional brazing material. Joint
must be disassembled, cleaned and rebrazed. Capture refrigerant charge (if system is charged),
unbraze joint, clean all parts, then rebraze.
If leak is detected in tubing, replace tubing. If leak is detected in either coil, replace faulty coil.
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