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WARNING
The connection lines may accumulate electrostatic charge.
Risk of severe injury!
Risk of fire!
• The connection lines must be made out of conductive material or provisions must be
made to avoid an electrostatic discharge. Arcing can ignite oil vapor that may be
present.
5.2.1 Suction Connection
WARNING
Unprotected suction connection.
Risk of severe injury!
• Do not put hand or fingers in the suction connection.
NOTICE
Foreign objects or liquids.
Risk of damage to the vacuum pump!
If the inlet gas contains dust or other foreign solid particles:
• Install a suitable filter (5 micron or less) upstream from the vacuum pump.
Connection size:
– 3" NPT
Depending on the specific configuration ordered, other connection dimensions may ap-
ply.
If the vacuum pump 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.
• Do not use the anti-suck-back valve as a system check valve.
NOTICE
Do not fill oil through the vacuum pump inlet.
Risk of damage to the vacuum pump!
Starting the vacuum pump with excessive quantities of oil in the cylinder will break the
vanes.
• Only fill oil through the oil fill plug (OFP).
