Section 5 Sealed System; Soldering - Electrolux E32AR75FPS Technical & Service Manual

Con all refrigerator and all freezer - professional series
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The purpose of this section is to give the service technician an understanding of refrigerants and sealed
system service. Persons attempting to use this service manual to make repairs to sealed system
refrigeration systems should have electrical training as well as training in sealed system repairs. The
person making the repairs must know and understand all laws (Local and International) governing
handling of all refrigerants. The technician must be trained in the use of recovery and recycling
equipment and an EPA certification for servicing refrigeration systems. Electrolux Home Products, Inc.
cannot be responsible, nor assume any liability, for injury or damage of any kind arising from the use of
this manual.
Effective July 1, 1992, the United States clean air act governs the disposal of refrigerants such as R-134a.
Therefore, when discharging or purging the sealed system use an EPA approved refrigerant recovery
system as outlined in the final rule on the protection of stratospheric ozone and refrigerant recycling, which
was published in the Federal Register May 14, 1993.
Electrolux does not permit the use of recovered refrigerant in the servicing of our products for in-warranty
and out-of-warranty repairs or for products covered by service contracts. Therefore, only new refrigerant or
refrigerant that has been reclaimed back to new specifications by a refrigerant manufacturer is to be used.

Soldering

WEAR APPROVED SAFETY GLASSES WHEN
WORKING WITH OR ON ANY PRESSURIZED
SYSTEM OR EQUIPMENT. HAVE AN APPROVED
DRY TYPE FIRE EXTINGUISHER HANDY
WHEN USING ANY TYPE OF GAS OPERATED
TORCH.
1. All joints to be soldered must have a proper fit.
Clearance between tubes to be soldered should
be from .001" to .006". It is not practical to actually
measure this; however, you do not want a dry fit or
loose fit. Tubing joints should overlap about the
distance of their diameter except for restrictor tubes,
which should be inserted 1.25".
2. Clean all joint areas with fine steel wool or preferably
an abrasive cloth, such as grit cloth No. 23 or
Scotch-Brite.
3. Apply a thin film of liquid flux recommended for
silver soldering to surfaces to be joined, and to
surfaces immediately adjacent to joint.
4. Align tubing so no stress is on joint. Do not move
tubing while solder is solidifying or leaks will result.
5. Use a torch of adequate capacity so joint can be
quickly heated with a minimum of heat travel to other
points. Use a good grade of silver solder.
During application of heat, use wet cloths to
prevent heat from conducting to areas other than
the soldered joint. Use a sheet of metal or torch
guard pad as a heat deflector to keep flame away
from inflammable materials and painted surfaces.
6. Solder connections. If tubing is properly cleaned
and fluxed, solder will flow readily. Use only enough
solder to make a good bond.
7. Allow joint to cool, then wash exterior with water to
remove flux.
5-1
Sealed System

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