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 18 of 35Translation of the original instructions
4.3 During operation
➨ 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.
+ Maximum ambient temperature: 40 °C
Make sure ventilation is adequate if pump is installed in a housing or if ambient
temperature is elevated.
• 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
overheatduetoinsufcientcooling).
• Checkcompatibilitywithmaximally permitted pressures at inlet and outlet.
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.
If pumping condensable vapors (water vapor, solvents, etc.), let the pump run with
gas ballast to help purge any condensation in the pump.
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.
In case of overload, the motor is shut down by a self-hold thermal circuit breaker
in the winding.
Note:Onlyamanualresetispossible.Switchoffthepumpanddisconnecttheelec-
tricalpowercord.Identifyandeliminatethecauseoffailure.Waitapproximatelyve
minutes before restarting the pump.
Avoid overheating (e.g., due to hot process gases). A warm up period (approximately
15 min.) is required to ensure that the rated ultimate vacuum and pumping speed
are attained.
NOTICE
NOTICE
• 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)
(see degree of protection IP).
• 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 cooling water valve).
• Avoidoverpressureinthecoolant circuit (e.g. caused by blockedorsqueezed
coolant hoses).
• Onlyinstallanoptionalcoolantvalveinthesupplylineoftheexhaustwastevapor
condenser.