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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
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 vapours
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 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 insufficient 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 pressure
at inlet and outlet.
Prevent internal condensation, transfer of liquids or dust. The diaphragm and valves
will be damaged, if liquids are pumped in significant amounts.
Check the pump regularly for external soiling and deposits, clean if necessary to
avoid an increase of the pump‘s operating temperature.
If pumping condensable vapours (water vapour, solvents, ....), let the pump run with
gas ballast
to reduce condensation in the pump.
The motor is protected by a
temperature sensor at the circuit board:
Current
limitation if the temperature at the circuit board is higher than 70°C, switching off the
pump if the temperature is higher than 85°C. In case of blockade of the motor (after
10 attempts to start-up) the pump is switched off.
If the pump is switched off due to safety measures, manual reset is necessary. Iso-
late the pump from mains. Eliminate cause of failure before restarting the pump.
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.
Attention: Important notes regarding the use of gas ballast
➨
When using air rather than inert gas, risk of significant 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.
NOTICE
