40
Operating Noises
Noises which are entirely normal
The chill cabinet is cooled by a compressor
(refrigeration aggregate). The compressor
pumps coolant through the cooling system,
producing operating noises. Even when
the compressor cuts out, noises caused by
changes in temperature and pressure are
unavoidable.
This cooler is fitted with a quiet compressor
and a low-noise cooling circuit designed in
line with the latest technical develop-
ments.
However, a certain level of noise, depen-
dent on the size of the cooler, is inevitable.
Operating noise will be most audible
immediately after the compressor cuts in. It
becomes quieter as the operating period
continues.
Noises which are not normal
Unusual noise is normally the result of
improper installation. The cooler must be
installed or built-in so that it is level and
stable. Under no circumstances must tu-
bing come into contact with a wall, other
furniture or with another tubing.
Where coolers are installed in open-plan
kitchens or in partition walls, the level of
operating noise will be heard more acutely.
However, this is due to the surrounding
architecture and not to a fault with the
cooler.
Description Cause
Comment
Droning
Cooling aggregate
Normal operating noise of the cooling aggregate.
The level is dependent on the size of cooler
Humming
Fan
Normal operating noise of the fan
Gurgling
Cooling circuit
Normal operating noise as coolant flows through
Babbling
the circuit
Murmuring
Hissing
Cooling circuit
Normal operating noise as coolant is injected into
the condenser
Clicking
Thermostat
Normal switching sound of the electromechanical
temperature controller
Rattling
Shelves, baskets,
Position the interior parts so that they don’t touch one
fitted holders, refri-
another, or so that they are fitted securely.
gerator contents etc.
Cracking
Cooler housing
Normal as materials expand and contract due
to temperature variations (e.g. plastics, insulation)
