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.
page 12 of 24
No. 47800-2-02-5
• The gas outlet 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 vapours to the surrounding atmosphere.
During operation
•
Maximum ambient temperature
: 40 °C
• Make sure ventilation is adequate especially if the pump is installed in a housing
or if the ambient temperature is elevated.
•
Potentially dangerous gases or vapours
at the outlet of the pump have to be
drained and disposed of appropriately.
• Due to the high compression ratio of the pumps, the pressure at the outlet port might
get higher than the maximally permitted pressure compatible with the
mechanical
stability
of the system. Ensure that the pump outlet is not blocked or restricted.
If pumping condensable vapours (water vapour, solvents, ....), let the pump run with
gas ballast
to reduce condensation in the pump.
If the pump is installed in altitudes of more than 1000 m above mean sea level check
compatibility with applicable safety requirements, especially IEC 60034 (motor might
overheat 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.
Operating the pump at high inlet pressure or pumping dusty gases for a long time
may cause clogging of the silencer. Check the silencer regularly and replace or install
a hose nozzle (order no. 20639758) with sealing ring (order no. 20639729) instead.
Prevent internal condensation, transfer of liquids or dust. The diaphragms 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.
In case of excess temperature, the motor is shut down by a
thermal cutout
in the
winding. Attention: Reset possible only manually. Switch off the pump or isolate the
equipment from mains. Determine and eliminate the cause of failure. Wait approx.
five minutes before restarting the pump.
Attention
: In case of
supply voltage below 100V
, the lock of the cutout might be
restricted and the pump might restart on its own after sufficient cooling down. Take
suitable precautions, if an automatic restart of the pump might lead to a dangerous
situation.
A warm up period (approx. 15 min.) is required to ensure that the rated ultimate
vacuum and pumping speed are attained. Avoid high heat supply (e. g. due to hot
process gases).
NOTICE
