Premier NV-1543 Скачать руководство пользователя страница 8

Страница: 8 / 10

BCD-230W 260W Service Manual

Printed at April 23, 2002

3.2.2

Mend the refrigeration System

The repair steps for refrigeration system are listed
below
a)

Cut off the compressor process pipe at the
point 2 centimeters far from the compressor

Weld out the suction pipe and discharge pipe
and seal the 3 compressor pipe with cover

Cut off the capillary tube at the position 1 cm
away from the drier-filter

Connect the repair valve with both suction
pipe and discharge pipe

Charge the refrigerant condenser up to 1.6
MPa and evaporator up to 8 MPa with
nitrogen, keep the pressure for 24 hours for
leakage Inspection

If the pressure drop down in 24 hours, it
indicate that there is a leakage in the piping as
step e)

If there is no pressure drop after 24 hours,
replace the drier-filter, disconnect the repair
valve at the discharge pipe and weld the
refrigerator pipe up

Vacuum the piping from the valve on the
suction pipe for 2 hours. The reading on the
vacuum-meter should less than 6 MPa

Charge the refrigerant according to the
indication of the parameter-sheet on the back
of the refrigerator

Run the refrigerator and check the
refrigeration performance according to 2.3.3

If the temperature and pressure of the
refrigerator is proper, weld the process pipe.
Leakage Inspection is needed for compressor
process pipe while compressor is stopped

Set the thermostat to mid-position (point 3~4)
and keep the refrigerator running for 24 hours.
If the refrigerator work and on/off properly, it
is ready to be returned to the customer

3.3

Performance’s Test

3.3.1

Electrical Performance Test

If the refrigerator does not run, check the following
issues in sequence:
a)

Check the power supply with a multimeter or
other means

If there is no problem with power supply,
check if the refrigerator plug is fit well with
the electrical socket. It is important that
always plugs the refrigerator into a fixed

socket directly, never uses a mid-commutator
between refrigerator and fixed socket

Check the thermostat knob position, please
adjust it to “4”

Check the voltage of the power. If the power is
out of the range, (187~242) V, please use a
qualified manostat to regulate the power
voltage in a reasonable value, otherwise please
unplug the refrigerator to avoid the damage of
the refrigerator.

Using a multimeter measuring the 2 terminals
of thermostat to check if they are in good
contact, while the knob is set at “4”. If they
didn’t in good contact, please replace the
thermostat with a new one

Using a multimeter measuring the PTC Starter,
the resistance of PTC should be no more than
25

, if not

, please replace it with a new one.

Using a multimeter to check the resistance of
Overload Protector, make sure it is not in the
situation of protection before measure. If it is,
wait for 5~8 minutes until it rebound. The
resistance between 2 terminals should be
approach to zero. If not, replace it with a new
one.

Take down the Defrost Timer from the
Control Housing on the top of Fresh-food
Compartment. Turn the adjust knob on the
defrost timer anti-clock wisely and look into
the serve window on it, the gear in the window
should be turned with knob. Continue turn the
knob; until two continued reed beat sound
have been heard. Measure the resistance
between 3 & 4, it should be equal to 0

and then measure the resistance between 1 & 4,
it should be approximate 26.7

otherwise

replace it with a new one.

Measure the defrost heater, heater fuse and
defrost thermostat consequently with a

Soporte Técnico