218 Part Number STH025 11/16
Severe System Contamination
1. Remove the refrigerant charge.
2. Remove the compressor and inspect the
refrigeration lines. If burnout deposits are found,
install a new harvest valve, replace the manifold
strainer, TXV and harvest pressure regulating valve.
3. Wipe away any burnout deposits from suction and
discharge lines at compressor.
4. Sweep through the open system with dry nitrogen.
Important
Refrigerant sweeps are not recommended, as they
release CFCs into the atmosphere.
5. Install a new compressor and new start components.
6. Install a suction line filter-drier with acid and
moisture removal capability. Place the filter drier as
close to the compressor as possible.
7. Install an access valve at the inlet of the suction line
drier.
8. Install a new liquid line drier.
Important
Dry nitrogen is recommended for this procedure. This
will prevent CFC release.
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