Safety information
20
20901118_EN-US_PC301x VARIO select Serie_V1.3_100720
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
.
Keep signs legible
Labels and signs
Keep any signs affixed to the device in an easily readable condi-
tion:
ð
Connection labels
ð
Warning and information signs
ð
Motor data and rating plates
2.9 Motor protection
Overheating protec-
tion, blockage pro-
tection
The pump motor has a temperature sensor on the circuit board
as overload protection. In the event of excessive temperature or
if the motor is blocked, the vacuum pump switches off.
Procedure for
switching back on
If the vacuum pump is switched off due to these safety precau-
tions, the error must be cleared manually: Disconnect pumping
unit from power supply -> Eliminate cause of error -> Restart
pumping unit.
2.10 ATEX equipment category
Installation and potentially explosive atmospheres
Installation and operation in areas where potentially explo-
sive atmospheres can develop to a hazardous degree is not
permitted.
The user is responsible for assessing the risks posed by the
equipment in such a way that any safety measures necessary
for installation and safe operation can be implemented.
ATEX approval only applies to the internal, wetted parts of the of
of the device, not to its surroundings.
