PRO TECHNICIAN
Inspection/Test
Visual and Aural Check
Click on the underlined sentence.
1.
Is the drive belt loose?
2.
Insufficient air flow
3.
Noise heard near compressor
4.
Noise heard inside compressor
5.
Condenser fins covered with dirt and dust
6.
Oil stains on A/C system connections or joints
7.
Noise heard near blower
Operate the blower motor at all speeds.Check for foreign objects lodged in the blower as this will also produce noise. Ensure secure mounting of the motor and balanced rotation before replacing the blower motor.
8.
Checking refrigerant quantity through sight-glass
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