6 | Installation
0870S03226_VRD 2072-3108_-0000_IM_en
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6.2 Connection lines/pipes
Danger of damage to the vacuum system from foreign bodies in the pipes.
• Remove all foreign matter (welding beads, filings, etc.) from the pipelines! This may
be done by flushing or blowing through pipelines.
• The client must ensure that the pipework at the inlet is clean.
• If the sucked gas contains dust or other solids, install a filter (separation efficiency up
to 5 micrometers) upstream of the vacuum pump inlet to protect the vacuum system.
Vacuum system can be damaged by tensile or compressive stresses on pipeline connec-
tions!
• If stresses could occur, use compensators to connect pipelines.
Condensate damages vacuum pumps!
• Lay the piping on the intake and pressure sides at an angle to prevent accumulated
condensation from entering the vacuum pump.
The line cross-section of the connection lines must have at least the same cross-section
as the connections of the vacuum system across the entire length.
In case of very long connection lines, it is recommended to use lines with larger cross-
sections to avoid loss of efficiency. Please contact your contact person from Busch.
6.2.1 Gas inlet
Danger of severe injury!
Open gas inlet!
• Never insert your hand or fingers into the gas inlet!
Connect the suction-side tubing to the gas inlet of the vacuum system (IN, Fig. 1).
Before initial start-up check the pipelines to the vacuum system for leaks. Rectify any
leaks.
Dimensions see scale drawings in the appendix.
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