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Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. Manual-no.: 999198 / 29/09/2009
Use and operation
Installing in a vacuum system
• Connection lines at the pump inlet have to be gas tight. Particles and dust must
not be aspirated, the user has to provide appropriate filters if necessary. The user
must ensure their suitability concerning gas flow, chemical resistance and safe
-
ness against clogging prior to use.
• Connect an exhaust line gas tight at the pump outlet if necessary. Always dispose
of exhaust gases appropriately (e.g. into a fume hood). If there is risk of release of
dangerous or polluting fluids, install an appropriate system to catch and dispose
of those fluids.
• The gas outlet (hose nozzle 10 mm / silencer) must not be blocked. The exhaust
pipeline has always to be free and pressureless to enable an unhindered dis-
charge of gases.
• When using the silencer: Check the silencer regularly for chemical attack and
deposits, replace if necessary or use an exhaust pipeline without silencer.
• Reduce the transmission of vibration and prevent loading due to rigid pipelines.
Insert elastic hoses or flexible elements as couplings between the pump and rigid
pipes.
Attention:
Flexible elements tend to shrink when evacuated.
• Especially if the gas ballast valve is open, a power failure may cause uninten
-
tional ventilation of the pump and the vacuum system. In case this constitutes a
potential source of danger, take appropriate safety measures.
• Make sure ventilation is adequate if the pumping unit is installed in a housing or
if ambient temperature is elevated. Provide external venting if necessary. Keep a
distance of minimum 20 cm between device and ambient parts.
The mains switch is at the left side of the pumping unit.
After switching off the pump, wait 60 sec. minimum until next switching on.
Avoid throttling losses by using connecting pipes with large diameter and keep them
as short as possible.
Install outlet pipelines always falling to avoid backflow of condensate towards the
pump.
When assembling, ensure
vacuum-tightness
. After assembly, check the complete
system for leaks.
Secure hose connections at the pump appropriately against accidental detaching.
NOTICE
