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8. Remove wiring from compressor.
9. After refrigerant is completely recovered, disconnect
suction and discharge lines from compressor.
10. Remove condenser mounting clips that secure
drain pan and remove condenser.
11. Install replacement condenser.
12. Remove original filter-drier.
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.
13. Install new filter-drier at condenser outlet.
14. Evacuate and charge the system using recom-
mended procedure described under Evacuating
and Recharging.
15. Reassemble unit.
SUCTION LINE AND CAPILLARY TUBE
REPLACEMENT
Follow the same procedure used for evaporator replacement.
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.
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.
1. Disconnect electrical supply to refrigerator.
2. Recover refrigerant by using EPA approved recovery
system.
3. Using three cornered file, score groove around
capillary tube as close to old filter-drier as possible.
Break capillary tube along score mark from filter-
drier.
4. Cut condenser outlet tube at filter-drier. Discard
filter-drier.
5. Thoroughly clean condenser outlet 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 recommended
procedure described under Evacuating and
Recharging.
10. Reassemble unit.
EVACUATING AND RECHARGING
CAUTION: Check the serial plate for the correct
refrigerant type. It is extremely important to
verify the type of refrigerant in the system
before starting any sealed system repairs.
CAUTION: With the possible exception of
the vacuum pump, all service equipment
that comes in contact with R-134a during
evacuation and recharging must be
dedicated. Accordingly, R-134a will require a
dedicated charging cylinder, manifold gauge
set, process tube adaptors, and hoses. Any
residual mineral oil on other tools (tubing
cutter, etc.) must be thoroughly cleaned off
before using on R-134a/Ester oil systems. It
will be necessary to check with the
manufacturer of your vacuum pump for
refrigerant and oil compatibility issues.
CAUTION: If you use a vacuum pump with
mineral oil to evacuate an R-134a system, it
is ABSOLUTELY ESSENTIAL to have a shut-
off valve between the pump and your mani-
fold gauge set as shown in Figure E2. The
hand valve must be closed during all times
when the vacuum pump is not operating.
This will prevent the migration of
oil vapor into the R134a/Ester oil system. If
the vacuum pump should stop during evacu-
ation for any reason, the hand pump shut-off
valve must be closed immediately.
CAUTION: Ensure that your refrigeration hoses
are specifically for use with R-134a refriger-
ant. Research has shown that
in standard refrigeration hoses may enter
sealed systems and ultimately restrict the
cap tube in an R-134a system.
Equipment Needed:
• Heated Dial-A-Charge charging cylinder
• Standard 3-port manifold gauge set:
• 4 charging hoses
• Tee fitting with valve core stem removed
(Robinair No. 40396)
• Hand shut-off valve (Robinair No.40380)
• Two stage vacuum pump
44
mineral
compounds
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