Documents are only to be used and distributed completely and unchanged, especially including the section ”Safety information”. This is page 14 of a document consisting of
49 pages. The instructions for use describe only the actual product. If the product is older or newer than the date of writing, it is strictly the users´ responsibility to check carefully
the validity of the document (if in doubt, order appropriate instructions for use). 99 90 34 / 12/09/2003
Notes on operation
Installing in a vacuum system:
☞
Avoid throttling losses by using connecting pipes with large diameter and keep
them as short as possible.
☞
Reduce the transmission of vibration and prevent loading due to rigid pipelines.
Insert elastic hoses or flexible elements as couplings between the pump and rigid
pipes.
Attention:
Flexible elements tend to shrink when evacuated.
☞
Use a suitable valve to isolate the pump from the vacuum system to allow the
pump to warm up before condensable vapours are pumped or to clean the pump
before it is switched off.
☞
Connect the exhaust to a suitable treatment plant to prevent the discharge of dan-
gerous gases and vapours to the surrounding atmosphere. Use a catchpot to pre-
vent the drainage of contaminated condensate back into the pump.
Prior to use:
☞
Max. ambient temperature
: 40 °C
☞
Make sure ventilation is adequate if pump is installed in a housing or if ambient
temperature is elevated. Keep a distance of min. 20 cm between fans and ambient
parts.
☞
If pump is installed in altitudes of more than 1000 m above mean sea level check
compatibility with applicable safety requirements, e. g. DIN VDE 0530 (motor may
overheat due to insufficient cooling).
☞
When assembling, ensure
vacuum-tightness
. After assembly, check the com-
plete system for leaks.
During operation:
Do not start pump if
pressure difference
between inlet and outlet port exceeds
max.
1 bar
. Attempts to start pump at higher difference may cause blockade and damage of
the motor.
☞
Check compatibility with
max. permitted pressure
at outlet and
max. pressure
difference
between inlet and outlet ports.
Due to the high compression ratio of the pumps, pressure at the outlet port might be
generated being higher than the max. permitted pressure compatible with the
me-
chanical stability
of the system.
The pump achieves its
pumping speed, ultimate total vacuum
and vapour pumping
rate only at operating temperature (after approx. 15 minutes).
☞
Prevent internal condensation, transfer of liquids or dust. The diaphragm and valves
will be damaged, if liquids are pumped in significant amounts.
☞
Let the pump run with
gas ballast
to reduce condensation of pumped substances
(water vapour, solvents, ....) in the pump.
Motor is shut down by a
thermal cutout
in the winding.
☞
Manual reset is necessary. Switch off the pump or isolate the equipment from
mains. Wait approx. five minutes before restarting the pump. Determinate cause of
failure and eliminate.
How to change the pressure units
+
mbar
Torr
hPa
(mains switch)
Press key p
▲
or p
▼
during switching on.
☞
The pressure units are displayed, the pressure unit as from
last operation is flashing.
➨
Press key
▲
or
▼
to change pressure unit. Press key stop
when controller displays the desired pressure unit to finish
the operation mode.
p
