Phcbi MDF-1156 Series, Руководство по эксплуатации

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20
TROUBLESHOOTING
If the unit malfunctions, check out the following before calling for service.
Malfunction Check/Remedy
If nothing operates even
when switched on
■ The unit is not connected to the power supply.
■ There is a power failure.
■ The fuse is blown or the circuit breaker is activated.
No refrigeration
■ The voltage too low. (In this case, call an electrician.)
■ The breaker free.
The cooling is poor
■ The environmental temperature is too high.
■ The door is not shut tightly.
■ The inner lid is not installed correctly.
■ The set temperature is not set properly.
■ The grille is blocked out.
■ The condenser filter is clogged.
■ The freezer is in the direct sunlight.
■ There is any heating source near the freezer.
■ A rubber cap and insulation for the access port are not set
correctly.
■ You put too many unfrozen articles into the freezer compartment.
Alarm test key cannot
actuate the alarm
■ The battery has been discharged entirely. In this case, operate
the freezer for about 3 hours and switch on the alarm test key
again. Entirely discharged cell requires about 2 days’ operation.
■ When only the buzzer or only the alarm is actuated by the alarm test
key, the unactuated part is out of order, and must be replaced.
Recorder for ATN type
does not operate normally
■ If the chart was not fed, examine the dry cell. The cell for the
recorder lasts about 1 year.
■ If the temperature was not recorded, examine the ink pen. The pen
should be our specified one. Is the recorder chart set correctly?
Noise
■ The freezer is not stable.
■ The freezer is not leveled with the leveling feet.
■ There is anything touching the frame.
■ It is the first operation after shutdown.
■ High temperature loads this freezer, and sometimes causes a noise.
Accordingly when the temperature lowered, the noise ceases.
Backup test switch does
not operate normally (when
the backup cooling kit is
provided)
■ The liquid N
2
tank is not filled up.
■ The valve of the tank is not opened.
■ The pressure of liquid N
2
is 0.5 kg/cm 2 G. Inquire at liquid N
2
suppliers about its installation, removal, adjustment, and examination.
Note:
If the malfunction is not eliminated after checking the above items, or the malfunction is not shown in the
above table, contact our sales representative or agent.