Installation and connection
20901118_EN-US_PC301x VARIO select Serie_V1.3_100720
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5. Plug the VACUU·BUS ca-
ble into the power connec-
tion on the back of the
controller.
6. Also plug in the
VACUU·BUS cables from
peripheral devices. Use Y
adapters (see acces-
sories) if there are not
enough connections.
4.4 Connection
All condensers in the pumping unit series have a vacuum con-
nection and an outlet connection. The connection is very similar.
Connect your pumping unit as described in the examples below.
4.4.1 Vacuum connection (IN)
CAUTION
Flexible vacuum hoses can contract during
evacuation.
Connected components that are not secured can cause
injury or damage due to jerky movement (shrinkage) of
the flexible vacuum hose. The vacuum hose can come
loose.
Ø
Secure the vacuum hose to the connections.
Ø
Secure connected components.
Ø
Take the maximum shrinkage, i.e., contraction, into
account when sizing the flexible vacuum hose.
NOTICE
Foreign bodies in the suction line can damage the
vacuum pump.
ð
Prevent particles, liquids or contaminants from being aspi-
rated or being able to flow back.
