VACUUBRAND PC 2001TE VARIO - Manual (Page 12)

page 12 of 50
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.: 99 91 35 / 11/04/2008
Use and 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.
☞ 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).
☞ When assembling, ensure vacuum-tightness. After assembly, check the complete
system for leaks.
During operation:
Do not start or operate the pump if pressure at the outlet is higher than 1.1 bar
absolute. Attempts to start or operate the pump at higher pressure may cause block-
ade and damage of the motor.
☞ Obey max. permitted pressure at the outlet and max. permitted pressure difference
between inlet and outlet.
The pump achieves its pumping speed, ultimate total vacuum and vapour pump-
ing 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.
☞ Operate the pump with gas ballast valve open to reduce the condensation of pumped
media (water vapour, solvents, ....) inside the pump.
The motor is protected by a temperature sensor at the circuit board: Current limita-
tion 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 bockade of the motor (after 10 at-
tempts to start-up) the pump is switched off.
☞ If the pump is switched off due to safety measures, manual reset is necessary.
Isolate the pump from mains. Eliminate cause of failure before restarting the pump.
☞ Avoid high heat supply (e. g. due to hot process gases).
☞ Ensure sufficient air admittance if pump is installed in a housing.
+
mbar
Torr
hPa
p
How to change the pressure units
Press key p
▲ or p▼ during switching on.
☞ The pressure units are displayed, the pressure unit as from
last operation is flashing.
➨ Press key p▲ or p▼ to change pressure unit. Press key
stop when controller displays the desired pressure unit to
finish the operation mode.