Installation | 5
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5.2 Connecting Lines / Pipes
• Remove all protective caps before installation.
• Make sure that the connection lines cause no stress on the machine‘s connection; if
necessary use flexible joints.
• Make sure that the line size of the connection lines over the entire length is at least as
large as the connections of the machine.
In case of very long connection lines it is advisable to use larger line sizes in order to
avoid a loss of efficiency. Seek advice from your Busch representative.
• Make sure that the connection flanges are fitted with the appropriate gaskets.
5.2.1 Suction Connection
WARNING
Unprotected suction connection.
Risk of severe injury!
• Do not put hand or fingers in the suction connection.
NOTICE
Ingress of liquids.
Risk of damage to the machine!
• The machine is not suitable for liquid suction.
Connection size:
– G3
If the machine is used as part of a vacuum system:
• Busch recommends the installation of an isolation valve in order to prevent the oil
from flowing back to the vacuum system.
5.2.2 Discharge Connection
Connection size:
– G3
• Make sure that the discharged gas will flow without obstruction. Do not shut off or
throttle the discharge line or use it as a pressurised air source.
Unless the aspirated air is discharged to the environment right at the machine:
• Make sure that the discharge line either slopes away from the machine or provide a li-
quid separator or a siphon with a drain cock, so that no liquids can flow back into the
machine.
• Make sure that the counter pressure (also termed back pressure) at the discharge con-
nection (OUT) does not exceed the maximum allowable discharge pressure, see Tech-
nical Data [►52].
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