0.1 Mechanical Hazards
1 When operated with an open intake flange, there exists a risk of suffer-
ing injury by rotating parts. Do not operate the pump with an open
intake flange or fan cover except when checking the direction of rota-
tion.
2 Avoid exposing any part of the human body to the vacuum.
3 The pump is intended for generating a vacuum only. If an overpressure
can occur in the system then the pump must be protected against
such an overpressure by an overpressure safety valve, for example.
4 We recommend to always operate the pump with a silencer or a con-
nected discharge line. The pressure in the discharge line must not
exceed atmospheric pressure by 200 mbar max.
Make sure that the gas flow at the discharge is not blocked or restrict-
ed in any way, even when the pumped out gases need to be collected
or contained.
The discharge line must not be blocked or restricted. Before commis-
sioning the pump, open all shutoff devices or valves in the discharge
line.
In the case of processes involving much condensate, we recommend
the installation of a condensate separator in the discharge line.
5 Select the location where the pump is installed so that all controls can
be easily accessed. Deposit the pump only on a floor which is level. It
can topple when it is tilted by more than 10° with respect to the verti-
cal axis. When the pump is filled with oil an angle exceeding 2° is not
permissible.
For pumps on castors only
Because of the fitted castors, the pump must only be placed on a level
floor capable of supporting the pump’s weight, as otherwise there
exists the risk of the pump rolling away. Moreover, the pump may only
be moved on a level floor! Moving the pump along sloping paths or
ramps is prohibited! The pump must only be transported with a forklift
or a crane! At the installation location, secure against rolling away.
6 For transporting the pump use only approved transport means. When
selecting the lifting and transport means take note of the total weight
before transporting the pump. As standard, the pump has been
equipped with two crane eyes. When transporting the pump with a
forklift or alike, ensure that the pump has been secured on the
supplied or a suitable palette.
The crane eyes of the screw pump must never be used to lift any
pump combinations (Roots pump + backing pump).
CAUTION
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