Engineering manual - SAB 193-233-283 S A-frame (including ATEX)
008831 en 2022.02
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Signs and warnings
2.8 Signs
All signs which may be found on your equipment are shown below. The number of signs, how-
ever, may vary from one product to another.
Risk of electric shock
High voltage/
High pressure
High surface
temperature
(about 70°C)
The compressor may be top-
heavy
Internal overpressure
Hazardous substance Cold surfaces
Dangerous noise level,
use hearing protectors
Do not step on surface No open flame Flammable gas
The unit IS filled with refriger-
ant R290
Internal protection Pacemaker users keep out
Compressor blocks and units are usually
delivered without refrigerant and oil. To
protect the compressors against internal
corrosion, they are delivered evacuated of
all atmospheric air and charged with dry Ni-
trogen (N
2
) to an overpressure of 0.5 bar
[7.3 PSI].
In such cases, a yellow sign is affixed to a
visible spot on the compressor.
The magnetic field on the rotor may affect
pacemakers. The motor rotor contains a
powerful magnetic field. This field may af-
fect digital devices such as watches and
mobile phones.
Assembly or maintenance of the rotor must
not be carried out by people with pace-
makers or any other implanted medical
electronic device.
The VSD contains capacitors capable of
storing electrical energy, meaning that
there is a risk of electric shock within 15 mi-
nutes after the drive has been turned off.
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