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Normal noises when functioning
1. Temperature Regulator.
May cause cracking sounds when the system connects
or disconnects.
2. Refrigerating system.
The injected cooling gas may produce a burbling sound
while running through the tubes.
3. Compressor.
May cause zumbing noises and/or slight bumping.
4. Insulation.
The material used has a tendency to increase noises,
but it does insulate perfectly and is of low energy con-
sumption.