Table of Contents
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Description
Cause
Droning
Cooling aggregate
Humming
Fan
Gurgling
Cooling circuit
Babbling
Murmuring
Hissing
Cooling circuit
Cracking
Cooler housing
Comment
Normal operating noise of the cooling
aggregate. The level is dependent on
the size of cooler.
Normal operating noise of the fan.
Normal operating noise as coolant
flows through the circuit.
Normal operating noise as coolant is
injected into the condenser.
Normal as materials expand and
contract due to temperature variations
(e.g. plastics, isolation).
15
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