Z
X
Y
Fig. 6:
Loading capacity of the connection flange
Installation of superstructural parts on the connection flange is the responsibility of the op-
erating company. The loading capacity is specific for the roots pump used. The total weight
of superstructural parts must not exceed the maximum values specified.
Maximum permissible forces
[N]
Maximum permissible torques
[Nm]
F
X
810
M
X
325
F
Y
1080
M
Y
325
F
Z
-3250
M
Z
325
Tbl. 8:
Maximum permissible forces and torques on the intake flange
5.5 Connecting the fore-vacuum side
WARNING
Risk of crushing from rotating parts
Fingers and hands may be caught by rotating pistons within the connection flange. This results in se-
vere injuries.
► Keep limbs out of the reach of the roots pump.
CAUTION
Danger of injury from bursting as a result of high pressure in the exhaust line
Faulty or inadequate exhaust pipes lead to dangerous situations, e.g. increased exhaust pressure.
There is a danger of bursting. Injuries caused by flying fragments, the escaping of high pressure, and
damage to the unit cannot be excluded.
► Route the exhaust line without shut-off units.
► Observe the permissible pressures and pressure differentials for the product.
► Check the function of the exhaust line on a regular basis.
Procedure
1. Choose a minimum pipe cross section equal to the nominal diameter of the pressure flange.
2. Clear welded lines of any tinder, loose parts or similar before installation.
3. Route the pipes so that no mechanical tension can act on the roots pump or the backing pump.
4. Install a bellows in the piping if necessary.
5. Ensure that mating flanges are in a parallel position.
Installation
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