NOTICE
Property damage from intake of solid particles
During commissioning, there is a risk of damage to the suction chamber from dirt from the system or
the pipes.
► Use a suitable protective strainer ("start-up strainer") in the intake flange.
► Ensure that this strainer is only removed when the risk of solid particles entering the vacuum
pump can be excluded.
– Observe any pumping speed decrease.
Required tools
● Ring spanner,
WAF 13
with flange DN 160 ISO-F
● Ring spanner,
WAF 30
with flange DN 150 PN16
Connecting the vacuum side
1. Degrease the connection flange.
2. Clear welded lines of any scaling, loose particles etc. prior to installation.
3. Route the piping between the vacuum pump and vacuum chamber so that it remains as short as
possible; at a minimum, the nominal diameter of the pump flange.
4. Select a larger nominal diameter for pipe lengths > 5 m.
5. Support or suspend the piping to the vacuum pump so that no piping system forces act on the
vacuum pump.
6. Always use
all
prescribed bolts for fastening the flanges and consider the prescribed pressure
stage for PN 16.
5.5 Use splinter shield
Pfeiffer Vacuum centering rings with splinter shield in the vacuum flange protect the roots pump against
foreign particles from the vacuum chambers. The pumping speed is reduced according to the passage
guide values and the size of the vacuum flange.
1
Fig. 11:
Splinter shield mounting orientation
1
Splinter shield
Procedure
► When installing the vacuum flange, pay attention to the correct mounting orientation of the splinter
shield.
Installation
26/66
Summary of Contents for HILOBE 2704
Page 1: ...OPERATING INSTRUCTIONS EN Translation of the Original HILOBE 2704 4504 6204 Roots pump...
Page 65: ...65 66...
Page 66: ...Notizen Notes...
Page 67: ......
