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BCD-230W 260W Service Manual

Printed at April 23, 2002

multimeter, if there is any broken circuit,
replace it with a new one.

Measure 3 terminals of the
compressor with a multimeter to
check the winding status. The
resistance between any two
terminals should be between
11~37

, otherwise replace it with a

new compressor.

3.3.2

Electrical Security Examination

Steps:

Grounded resistance should be no more than
0.1

Electrical intensity should be 1250 V/min

Current leakage should be no more than 1.5
mA

Insulation resistance should be more than 2
M

Refrigerator can be started up at 187 voltages.

Above tests could be carrying out on an electrical
performance tester, multimeter, M

meter and

Voltage adjuster.

3.3.3

Refrigeration Test

Steps:
a)

Test the cooling speed: the refrigerator should
be able to cold down to (0~10)

within 2

hours

Test the ice making capacity: the water in the
ice-tray should be able to be iced up within 2
hours ( while the fresh-food compartment
temperature is below 10

)

Check the control cycles

3.3.4

Tidy Up After Repair

Steps:
a)

Paint every weld position with transparent
antirust paint to prevent corrosion

Clear both outer-side and inner-side of the
cabinet

Adjust the door in a right position, it will
affect the refrigeration efficiency and even
worse the cabinet internal temperature if the
door is set at a un-proper location

Check the door gasket

Put in all accessories and fix them with the
adhesive tape

Pack the refrigerator as the same as the end
product

Attention

4.1

Attention For The Repair of R134a Refrigeration
Piping

A high attention should be taken for the cleanliness
within system. The system component should be
avoided from pollution of oil or other foreign
substance; otherwise it may clog the refrigeration
system, especially the capillary tube. Although the
varieties method had been used to reach a proper
cleanness, it still may happened, since the poor
merging capability between R134a, grease and wax
(they are remained in motor winding, the
protective oil for the compressor components and
the oil used in the production of evaporator and
condenser. Some alkali substance, such as the
protective solvent used in the production of
compressor component, can also clog capillary
pipe. The reaction between these substance and
lubricant oil can produce caustic salt in capillary
that can also damage the capillary pipe. All other
foreign substance, such as chlorine-ion, must be
avoided, since these substance will react with
lubricant and produce harmful acids (HF, HCL)
that can corrode the metal and damage the
desiccant & lubricant. Mineral oil must also be
avoided, because it can decrease the solubility of
R134a and lubrication, and rise the oil return
problem in further. All components in the
refrigeration system must be prevented from any
impurity substance.

4.2

Refrigerant Components For the Repair

4.2.1

All refrigerant components in the repair field
must be sealed well. A positive pressure
should be existed in the condenser and
evaporator before they are used.

4.2.2

The seal of any component should be removed
only when it is ready to be used.

4.2.3

The seal mustn’t be mix-used with R12 system.

4.2.4

The compressor of R134a and R12 system
mustn’t be mix-used

4.2.5

All components in the refrigeration piping
mustn’t be mix-used with R12 system

4.2.6

The lubricant for R12 and R134a system
mustn’t be mix-used

4.2.7

The desiccant for R134a cannot be used in
R12 system.