Mazda CT-L1005, Руководство по обучению

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Diagnosis and Repair Basic Climate Control
Component Replacement
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Once the refrigerant has been drained from the A/C system, the component in question
can be removed. When a component is removed, the refrigerant lines to the rest of the
system should be plugged to ensure that moisture does not enter the system.
NOTE : If there is no refrigerant left in the system this means that air has entered the system,
and the drier is exposed to moisture. If the system is open for more than 3 hours, the
drier will need to be replaced.
•
Since the compressor oil is carried throughout the system by the refrigerant, each
component contains a certain amount of oil. When replacing a component, the oil that is
trapped in the component in question must also be replaced. For each component to be
replaced in the system, the workshop manual will give an amount of oil that should be
added. This ensures proper lubrication of the compressor.
NOTE: When lubricating the O-rings with compressor oil, use a lint free cloth to apply the oil.
Using a finger to apply the oil will give the PAG oil a chance to absorb the moisture
from the skin, resulting in moisture entering the A/C system.
•
When replacing the compressor a special procedure is required, since new compressors
are pre-filled with compressor oil. Before installing the new compressor, the compressor
oil from the old and new compressor should be drained into separate measuring
containers. Since a certain amount of the oil from the old compressor is contained in the
various system components, the amount of compressor oil removed from the old
compressor determines the amount of oil to be added when installing the new
compressor (see the workshop manual for the specific values).
NOTE: Refer to the workshop manual for the correct type and amount of compressor oil.
Curriculum Training 05-8