SmartROC T35/T40 7 Operator Environment
27 No: 7026962571.1.7027002891 en-US
Fault Symptom Action
Check that the system is filled and that the thermostat is working.
Abnormal noise Check that the multi-V-belt to the compressor is properly tightened and
that the compressor retaining bolts are tightened.
Check that the system is filled sufficiently and not overfilled.
Check that the expansion valve is in working order.
Check that the airflow across the evaporator is sufficient.
Check that the condenser is clean and the airflow is sufficient.
• Abnormal system noise is often related to incorrectly assembled
components. If the compressor is noisy at a certain speed and the
noise disappears when the speed increases or decreases, there is
probably nothing wrong with the compressor itself. The difference
between the pressure on the suction side and the pressure side
also affects the level of noise. A compressor with low suction
makes more noise than a compressor with high suction. Likewise,
a compressor with high pressure makes more noise because it
puts more load on bearings and other components.
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