VACUUBRAND PC 2001 VARIO - Manual (Page 14)

page 14 of 49
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.: 999100 / 06/05/2008
For condensable vapours (water vapour, solvents, ...):
☞ Do not pump vapour before pump has reached its operating
temperature and not with gas ballast valve closed.
☞ Open gas ballast valve. Close gas ballast valve by turning
180°.
☞ The gas ballast valve is open if the arrow on the gas ballast
cap points towards the pump.
☞ With gas ballast valve open ultimate vacuum will be reduced,
pumping speed is decreased.
☞ Use inert gas at the air inlet to avoid the formation of explo-
sive mixtures.
Attention: Important notes regarding the use of gas ballast
☞ Make sure that air/gas inlet through the gas ballast valve never leads to hazardous,
explosive or otherwise dangerous mixtures. If in doubt, use inert gas.
☞ 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.
gas ballast
+
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.
☞ Setting of interface parameters, see section “Interface“.
☞ Preselections at the controller, see section “Modes“.
☞ Use and operation of the controller see section “How to operate the controller”.
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.
☞ Comply with 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 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.
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.
Settings at the controller