Signs and Warnings
11/38
0175-168 - ENG
Rev. 2005.09
Operating Manual - SAB 202
The sign: The temperature of tangible
surfaces
When a compressor is working, the surfaces
which are in contact with the warm discharge gas
will also get warm. However, the temperature de-
pends on the
refrigerants used as well as the op-
erating conditions of the compressor. Often the
temperature exceeds 70
°
C [158
°
F], which for
metal
surfaces may
cause skin burns even at a
light touch.
Consequently, the compressors are equipped
with yellow warning signs signalling that pipes,
vessels, and machine parts will become so hot
during operation that your skin will get burnt if you
touch them for one second or more.
The sign: Internal protection
Compressor blocks and units are usually deliv-
ered
without
any refrigerant or oil.
To protect the compressors against internal corro-
sion, they are delivered evacuated of all atmos-
pheric air and charged with Nitrogen (N
2
) to an
overpressure
of
0.2 bar [3 psi]
.
In such cases a yellow sign is affixed to a visible
spot on the compressor.
Other warning signs
Påfyldt beskyttelsesgas
Charged with inert gas
Enthält Schutzgas
Chargé du gaz protecteur
Contiene gas protector
N
2
0,2 bar
3 PSI
1534-169
Hazardous substance!
Dangerous noise level,
use hearing protectors!
Internal overpressure!
Cold surfaces!
