VACUUBRAND MZ 2C +AK+EK - Manual (Page 13)

page 13 of 28
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.: 995653 / 06/10/2009
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
☞ 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 underside the terminal box is posi-
tioned 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 and remove after having set the voltage changeover switch to the correct
position!
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. IEC 60034 (motor may over-
heat due to insufficient cooling).
☞ Especially if the gas ballast valve is open, a power failure may cause unintentional
ventilation of the pump. In case this constitutes a potential source of danger, take
appropriate safety measures.
Selecting the supply voltage:
Attention:
Before starting the pump, check that
the voltage changeover switch
underside the terminal box is cor-
rectly 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.