Mazda CT-L1005, Руководство по обучению

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Basic Climate Control Diagnosis and Repair
Compressor Damage
•
The most serious compressor damage arises from lack of lubrication. In this case, there
is a possibility that metal particles will be carried throughout the system.
NOTE: Burnt compressor oil and metal particles in the oil are reliable indicators of a seized
compressor.
•
When the A/C system is contaminated with metal particles, these must be removed from
the complete system (with compressed air for example) before the compressor is
replaced. Especially, components with restrictions or narrow passages (multiflow
condenser, expansion valve/fixed orifice, drier) should be inspected carefully. If the
particles cannot be removed, the affected components must be replaced. Failure to do
so may result in the new compressor being damaged again.
NOTE: On an A/C system with a fixed orifice, the accumulator / drier can be especially
succeptible to blockage from metal particles due to the small size of the oil pick up
orifice.
Odours from the A/C System
•
Musty damp odour coming from the air vents may arise from micro-organisms forming on
the surface of the evaporator. The formation of micro-organisms is promoted by the
moist warm climate in the housing of the A/C unit, which is created when the A/C is
turned off.
•
Modified coatings on the evaporator and better drainage of the condensed water mean
that these effects have been practically eliminated. In the event a customer complains of
an odour, the evaporator and the housing of the A/C unit should be inspected, and
cleaned and disinfected as required.
Curriculum Training 05-9