page 11 of 24
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.: 995652 / 08/10/2009
Attention:
Before starting the pump, check that the voltage changeover switch at the
terminal box is correctly positioned. Change the selection at the voltage
changeover switch only if the pump is separated from mains.
Voltage changeover switch:
Use a screw driver to adjust the supply voltage on the
voltage changeover switch
at
the terminal box of the pump:
”115” corresponds to 100-120V and
”230” corresponds to 200-230V.
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.
☞
Use a suitable valve to isolate the pump from the vacuum system if you need to
allow the pump to warm up before you pump condensable vapours or if you 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.
☞
Before switching on the pump check that mains voltage and current conform
with the equipment!
Pump with dual-voltage motor:
☞
Check that the voltage changeover switch at the terminal box is positioned
correctly.
Attention: If the pump is switched on with the voltage not correctly selected,
the motor may be damaged!
Pay attention to the warning label on the on/off
switch (ME 2 only) and remove after having set the voltage changeover switch to
the correct position!
Selecting the supply voltage:
ME 2
with dual-voltage motor
MZ 2D
with dual voltage motor