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4.3.
Residual energy
Even if all the hazard warnings in
Chapter 4.2
are taken into account, the following residual energy situations
can result in a hazard:
Rotational energy of the decelerating fan
o
Despite the installed protective grille, hair or pieces of clothing can still be drawn in and
caught.
Hot surfaces on machine parts
o
Especially the compressor head and the hot gas pipe and the condenser can still be very
hot for some time after the machine has been switched off. Temperatures within the range
from 60°C to 90°C are possible.
Dangerous electrical voltage in the control cabinet despite the switched off main switch
o
If the machine is only switched off at its main switch, dangerous electrical voltage is
nonetheless still present at several terminals in the control cabinet. In particular, these are
the main supply terminal and the input terminals of the main switch.
Refrigeration circuit is pressurise
o
Provided it is not damaged the refrigeration circuit is closed. Therefore, a hazard is not to
be assumed.
Note:
After switching off the unit at the main switch, if you wait for 5 minutes before opening the unit risks due to
rotational energy and electrical power can be reduced. In this case only the residual thermal energy must be
considered.
