Owner manual

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.: 999223 / 08/07/2009
page 18 of 34
In case of condensable vapors (water vapor, solvents, ...):
☞ Do not pump vapor until the pump has reached its opera-
ting temperature.
☞ Open gas ballast valve.
☞ The gas ballast valve is open if the arrow on the gas bal-
last cap points downwards.
☞ With gas ballast valve open ultimate vacuum will be reduced, pumping speed is
decreased.
☞ Useinertgasattheairinlettoavoidtheformationofexplosivemixtures.
☞ Close gas ballast valve by turning it 180°.
In case of low boiling solvents when the formation of condensate is unlikely, the use
of gas ballast might be unnecessary.
Operating the pump without gas ballast increases the solvent recovery rate at the
exhaustwastevaporcondenser(accessory).
Attention: Notes concerning the operation of the exhaust waste vapor conden-
ser (accessory)
☞ Thegasoutlet(hosenozzle10mm)mustnotbeblocked.Theexhaustpipeline
has always to be free and pressureless to enable an unhindered discharge of
gases.
☞ Connect the exhaust to a suitable treatment plant to prevent the discharge of
dangerous gases and vapors to the surrounding atmosphere.
☞ Ensure that the coolant outlet pipeline is always free and that it cannot get
blocked.
• Check the overpressure safety relief device at the exhaust waste vapor con-
denser regularly, replace if necessary. Check especially for conglutination and
cracks.
• Maximumpermissiblecoolantpressureattheexhaustwastevaporcondenser:
6 bar (absolute).
• Complywiththe maximumpermissible coolantpressuresofadditionalcompo-
nents in the coolant circuit (e.g coolant valve).
• Installoptionalcoolantvalvesalwaysinthesupplylineofthewastevaporcon-
denser only.
• Avoid overpressureinthecoolantcircuit(e.g.causedbyblockedorsqueezed
coolant hoses).
• Incaseof condensation: Check liquid level in the catchpot during operation.
Avoidoverowingofthecatchpot.
4.5 Attention: Important notes regarding the use of gas ballast
➨ Whenusingairratherthaninertgas,riskofsignicantdamagetoequipmentand/
orfacilities,riskofpersonalinjuryorevenlossoflifeexistsduetotheformation
ofhazardousand/orexplosivemixturesifairandpumpedmediareactinsideor
at the outlet of the pump.
➨ Make sure that air/gas inlet through the gas ballast valve never leads to hazard-
ous,explosiveorotherwisedangerousmixtures.Ifindoubt,useinertgas.
gas
ballast