Installing A New Compressor - Electrolux FPRH17D7KF All Refrigerator Professional Series Servicing

Installing a New Compressor

NOTE
Entirely new compressors have been developed or use
with R-134a and Ester oil refrigeration systems. Both
compressor and electric motor have been modified.
Old compressors intended for R-12 refrigerant must not
be used for new systems charged with R-134a.
Replacement of compressor and installation of filter-drier
must be done in a continuous sequence so system is
exposed to atmosphere no longer than necessary.
All replacement compressors are shipped with rubber
plugs in the suction, discharge and process tubes and
contain the correct oil charge and a holding charge of
inert gas. Compressors have a low-side process tube
attached to the compressor shell. A high-side process
tube is attached to the filter-drier.
WARNING
Do not operate reciprocating compressor when
charging liquid refrigerant into system through
its process tube.
Replacement compressors for refrigerators/freezers may
have an oil cooler even if the original compressor did
not. If the product is not equipped for an oil cooler,
leave the plastic caps in place and install the compressor
connecting only to the suction and discharge lines of the
new compressor.
Before installing the replacement compressor remove the
discharge plug and check for the pop sound of the inert
gas leaving the compressor.
CAUTION
DO NOT use compressor if you do not hear this
sound.
If the compressor checks OK, reinstall the plug. Do not
remove any of the plugs again until the compressor is in
position and you are ready to braze the lines.
CAUTION
On R-134a systems, compressor must NOT
be left open to atmosphere for more than 10
minutes to prevent moisture contamination of
oil.
Section 4 Refrigeration
NOTE
The following instructions are generalized to help the
technician understand the procedures of sealed
system repairs. See Section 5 Component Teardown
on the exact steps of accessing the components of the
refrigeration system.
A new compressor which is cold (e.g. after having been
kept in a cold service van) should be left to warm to the
surrounding temperature before the plugs on the
compressor connections are removed. This will help
prevent condensation from forming in the oil and the
compressor. Also, avoid opening the system when any
of the components or lines are cold.
NOTE
Release holding charge (release slowly to avoid oil
discharge) on new compressor to ensure there is no
leak in seam or tubing. Reinstall rubber plug.
1. Disconnect electrical supply to refrigerator/freezer.
2. Remove compressor access panel.
3. Remove all components needed to pull the
compressor assembly from the unit.
4. Pull compressor assembly straight out.
5. Recover refrigerant by using EPA approved
recovery system.
NOTE
If low-side process tube is too short, silver solder four
inch piece of tubing onto process tube at this time.
6. Remove leads from compressor motor terminals.
7. Remove mounting clips and washers.
8. After refrigerant is completely recovered, cut
suction and discharge lines as close to compressor
as possible. Leave only enough tubing to pinch off
and seal defective compressor. Plug or tape any
open system tubing to avoid entrance of moisture
and air into system. Remove inoperable
compressor and transfer mounting parts to new
compressor.
9. Install new compressor in exact same manner as
original compressor.
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