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 17 of 34
• 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.
• Ifnecessaryconnecttheexhausttoasuitabletreatmentplanttopreventthedis-
charge of dangerous gases and vapors to the surrounding atmosphere.
• Attention:Installhosesofthecoolingsysteminawaytoavoidow/droppingof
condensed water onto the pumping unit (especially cables and electronic parts).
• 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)
• Installcoolantvalvesalwaysinthesupplylineofthewastevaporcondenseronly.
• Complywith themaximum permissiblecoolant pressuresof additionalcompo-
nents in the coolant circuit (e.g cooling water valve).
• Avoidoverpressureinthecoolantcircuit(e.g.caused byblockedorsqueezed
coolant hoses).
4.4 During operation
• Maximum ambient temperature: 40 °C
• Makesureventilationisadequateifpumpisinstalledinahousingorifambient
temperature is elevated.
• Potentially dangerous gases or vapors at the outlet of the pump have to be
drained and disposed appropriately.
• Duetothehighcompressionratioofthepumps,pressureattheoutletportmight
begeneratedbeinghigherthanthemaximumpermissiblepressurecompatible
with the mechanical stability of the system. Ensure that the pump outlet cannot
become blocked or restricted.
If pumping condensable vapors (water vapor, solvents, ....), let the pump run with
gas ballast to reduce condensation in the pump.
If pump is installed in altitudes of more than 1000 m above mean sea level check
compatibility with applicable safety requirements, e. g. IEC 60034 (motor may over-
heatduetoinsufcientcooling).
Do not start the pump if the pressure at outlet portexceeds maximum 1.1 bar
(absolute). Attempts to start the pump at higher pressures may cause blockade and
damage of the motor.
Check compatibility with maximally permitted pressures at inlet and outlet and
with permitted pressure differences between inlet and outlet.
Prevent internal condensation, transfer of liquids or dust. The diaphragm and valves
willbedamaged,ifliquidsarepumpedinsignicantamounts.
Check the pumpregularlyforexternal soiling and deposits, clean if necessary to
avoid an increase of the pump‘s operating temperature.
The motor is protected by a temperature sensor at the circuit board: Current limi-
tation if the temperature at the circuit board is higher than 70°C.
Avoid high heat supply (e. g. due to hot process gases).
Awarmupperiod(approx.15min.)isrequiredtoensurethatratedultimatevacuum
and pumping speed are attained.
NOTICE