Component Testing ---VCBB Bottom Freezer – Refrigerator
Compressor Description Test Procedure
9. Plug test cord into volt-watt meter to determine start and run
wattage as well as check for low voltage which can also be a
source of trouble.
10. With power to volt-meter, press start cord switch and release.
• If compressor motor start and draws normal wattage, com-
pressor is okay and trouble is in capacitor, relay / overload,
freezer temperature control, or elsewhere in system.
• If compressor does not start when direct wired, recover system at
high side. After system is recovered, repeat compressor direct wire
test. If compressor runs after recovery but would not run when
direct wired before recovery, a restriction is indicated.
• If compressor does not run when wired direct after recovery,
replace faulty compressor.
Condenser Condenser is of tube and wire Leaks in condenser can usually be detected be using an electronic
construction located in or soap solution. Look for signs of compressor oil when checking
compressor compartment. for leaks. A certain amount of compressor oil is circulated with
refrigerant.
Condenser is on high pressure Leaks in post condenser loop are rare because loop is a one-piece
discharge side of compressor. copper tube except for brazed joint visible in machine
Condenser function is to compartment.
transfer heat absorbed by
refrigerant to ambient. For Minute Leaks
Higher pressure gas is routed 1. Separate condenser from rest of refrigeration system and
to condenser where, as gas pressurize condenser up to a maximum of 9.65 bars (140 PSI)
temperature is reduced, gas with a refrigerant and dry nitrogen combination.
condenses into a high pressure 2. Recheck for leaks.
liquid state. Heat transfer takes
place because discharge gas is
at a higher temperature than
air that is passing over
condenser. It is very
important that adequate air
flow over condenser is main-
tained.
Condenser is air cooled by
condenser fan motor. If
efficiency of heat transfer
from condenser to surrounding
air is impaired, condensing
temperature becomes higher.
High liquid temperature means
the liquid will not remove as
much heat during boiling in
evaporator as under normal
conditions. This is indicated Remove any lint accumulation, etc. that would restrict normal air
by higher than normal head movement through condenser.
pressure, long run time, and
high wattage.
From compressor refrigerant
flows into serpentine under
condensate pan to help
evaporate condensate, and then
into pre-condenser loop which
helps control exterior
condensation on flange, center
mullion, and around freezer door.
71
(17 pages)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals