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.: 01-005-005-36-1
page 19 of 35 Translation of the original instructions
4.4 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 or close
gas ballast valve.
To reduce condensation in the pump, do not pump vapor be-
forethepumphasreacheditsoperatingtemperature.Open
the gas ballast valve when pumping condensable vapors.
For condensable vapors (water vapor, solvents, etc.):
- The gas ballast valve is open if the arrow on the gas bal-
last cap is pointing towards the labelling ”GB”.
- With gas ballast valve open, the ultimate vacuum will be
reduced.
- Useinertgasforgasballasttoavoidtheformationofex-
plosive mixtures.
- Close the gas ballast valve by turning the cap 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.
4.5 Attention: Notes concerning the operation of the exhaust
waste vapor condenser
➨ Connect the exhaust to a suitable treatment plant to prevent the discharge of
dangerous gases and vapors to the surrounding atmosphere.
+ The gas outlet (hose nozzle 8-10 mm) must not be blocked. The exhaust pipeline
has always to be free and pressureless to enable an unhindered discharge of
gases.
+ Check the overpressure safety relief device at the exhaust waste vapor con-
denser regularly, replace if necessary. Check especially for conglutination and
cracks.
• Ensure that the coolant outlet pipeline is always free and that it cannot get
blocked.
• 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).
Gas
ballast
(open)