Filter-Drier Installation; Evacuating And Recharging - Electrolux E23CS75DSS0 Service Manual

74
Section E - Refrigeration System
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
recommended procedure described under

Evacuating and Recharging.

15. Reassemble unit.

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 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 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 the
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.
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.
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 manifold
gauge set as shown on page Figure E2. The
hand valve must be closed during all times
when the vacuum pump is not operating. This
will prevent the migration of mineral oil vapor
into the R134a/Ester oil system. If the vacuum
pump should stop during evacuation for any
reason, the hand pump shut-off valve must be
closed immediately.
Insure that your refrigeration hoses are
specified for use with R-134a refrigerant.
Research has shown that compounds in
standard refrigeration hoses may enter
sealed systems and ultimately restrict the cap
tube in an R-134a system.