66 Section E- Refrigeration System
FILTER-DRIER INSTALLATION
Any time the sealed system is opened and the refrigerant charge is removed, the
liquid line filter-drier must be replaced and the system thoroughly evacuated before
recharging.
1. Disconnect unit from source of power.
2. Recover refrigerant by using an EPA approved recovery system.
3. Using a 3 cornered file, score a groove around capillary tube as close to old filter-
drier as possible. Break capillary tube along score mark from filter-
drier.
4. Cut hot tube at filter-drier. Discard filter-drier.
5. Thoroughly clean end of hot tube and capillary tube.
6. Place inlet connection of filter-drier over condenser tube approximately ¼” and
solder.
7. Insert capillary tube input end into filter-drier outlet. Do not allow tube to bottom
against screen. Solder carefully so that solder does not plug capillary tube.
8. Install process tube adaptor to filter-drier.
9. Evacuate and charge system using the recom mended procedure described
under Evacuating and Recharging on page 67. When using the two stage
drier-filter, add an additional 1/4 ounce of refrigerant to what’s required on
the serial plate charge.
10. Reassemble unit.
CAUTION
DO NOT unbraze the old filter-drier from the system. This will vaporize and drive
moisture from the desiccant back into the system. The old filter-drier should be cut out
of the system.
CAUTION
Use only a 15 gram XH9 liquid line filter-drier (part number 5303305677) when servicing
refrigerator and freezer systems. This filter-drier is compatible with either R-12 or R-
134a refrigerant.
NOTE
If system is and/or old compressor oil is badly contaminated, use the new 2 stage drier-
filter, part # 5303918288. Refer to Service Bulletin Volume 23, # 3, page 13.
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