vacuubrand PC 3001 VARIO select Instructions For Use Manual page 19

Chemistry pumping unit
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Surface tempera-
tures
Overheating
Hazards when han-
dling cryogenic sub-
stances
20901367_EN-US_PC3001 VARIO select Serie_V1.3_100720
Hazards due to hot surfaces or overheating
The surface of vacuum pumps can reach temperatures > 70 °C
during operation, in particular when pumping out heated media.
ð Avoid direct contact with the surface.
ð Use protection against accidental contact if the surface tem-
perature is regularly elevated.
ð Allow the vacuum pump to cool down before performing
maintenance work.
The vacuum pump can be damaged due to overheating. Possi-
ble causes include insufficient air supply to the fan and/or failure
to maintain minimum distances.
ð When installing the device, ensure that there is a minimum
distance of 5 cm between the fan and adjacent parts (such
as the housing, walls, etc.).
ð Always ensure a sufficient air supply; if applicable, provide
external forced ventilation.
ð Place the device on a stable surface. A soft surface such as
a foam rubber sound absorber can impair and block the air
supply.
ð Clean polluted ventilation slots.
ð Remove the cover used as transport protection from the de-
vice before operating it.
ð Avoid excessive heat input due to hot process gases.
ð Observe the maximum permissible media temperature ac-
cording to the technical data.
Correct handling of coolants and cryogenic substances
Cryogenic substances can cause frostbite (cold burns) on con-
tact with skin.
ð Observe the applicable regulations regarding handling of
cryogenic substances.
ð Use only approved transport containers.
ð Take the appropriate safety precautions when handling
cryogenic coolants, e.g., dry ice.
ð Do not use damaged components.
ð Wear your personal protective equipment when handling
hazardous substances.
ð Ensure your workplace is ventilated.
Safety information
19

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