Vinotemp VC100D, Service Manual

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8.4.10 ABNORMAL NOISE / NORMAL NOISE
- Compressor Noise

The working of the electrical motor and the pump inside the compressor will cause
noise during the run time. The noise should be stable and not exceed 42 dB(A). If the
noise is excessive, the compressor is failed and should be replaced.

The aging rubber legs or incorrect leg mounting (Too loose or too tight) also generate
the abnormal noise. If so, please correct the leg mounting or replace the legs.
- Fan Noise

The working of fan motor will cause noise during the run time. The noise is stable and
not exceeds 40 dB(A). If the noise is excessive, checking the following:

If the bearing of fan motor is failed, replace the fan motor.

If the fan interferes with the wirings, fix the wirings.
-
Refrigerant Flow Noise

The end of the capillary tube was inserted too far into the inlet pipe of evaporator. Or
there are burrs at the end of the capillary tube.

The anti-vibration damp wraparound the joint of capillary and inlet tubing of
evaporator is lost.

The capillary is interfered with the other parts.

The compressor oil has been flow to the refrigeration tubing during transportation.
Perform the system flush, sweep and recharge.
-
Normal Noise
All models incorporate rigid foam insulated cabinets to provide high thermal efficiency
and maximum sound reduction for its internal working components. In spite of this
technology, your model may make sounds that are unfamiliar.
Normal operating sounds may be more noticeable because of the unit’s environment.
Hard surfaces such as cabinets, wood/vinyl/tiled floors and paneled walls have a
tendency to reflect normal appliance operating noises.
Common refrigeration components, and a brief description of the normal operating
sounds they make, are listed below:

Compressor: The compressor makes a hum or pulsing sound that may be heard
when it operates.

Evaporator/Capillary: Refrigerant flowing through an evaporator may sound like
boiling liquid.

Condenser/Evaporator Fan: Air moving through a condenser may be heard.

Automatic Defrost/Drain Pan: Water may be heard dripping or running into the drain
pan when the unit is in the defrost cycle.

At the end of each cycle, you might hear a bubbly noise coming from the fluid
circulating in the pipes.

The interior walls contracting and expanding may also cause clicking or cracking
sounds.
8.4.11 EVAPORATOR FREEZING
The evaporator will be freezing because of the below reasons:

The interior fan motor is failed. Check the door switch and if it is failed replace the door
switch. If the fan motor is failed, replace the fan motor.

Frequent power outages .

The door is open too long time.

Faulty seal between the door gasket and cabinet front. Use the hairdryer to heat the poor
position of magnetic strip and then pull the strip to make it attract to the cabinet front. If
this can’t work, replace the door gasket.