VACUUBRAND MZ 2C VARIO - Manual (Page 46)

page 46 of 51
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.: 999034 / 22/04/2008
➨ Tighten union nut first by hand and then tighten by one full
turn using open-ended wrench.
➨ Reconnect hose to the inlet of the condenser and tighten
union nut.
➨ Use open-ended wrench to reconnect hose to elbow fitting.
Assembling the pumping unit
PC 2003 / PC 2004:
➨ Assemble pump at pump support. Support pump appropriately.
➨ Screw in at each case two socket head screws at the front of the pump an underneath the terminal box
with hex key size 5. Pay attention to washers.
➨ Position pump with pump support on the base plate and tighten the four hexagon nuts on the feet of the
pump support (open-ended wrench w/f 10).
➨ Reassemble connections at controller.
PC 2002:
➨ Use hex key size 7 to screw controller with socket head screw to holding plate.
➨ Reassemble connections at controller.
If the pump does not achieve the ultimate pressure:
☞ In case the diaphragms and valves have been replaced, a run-in period of several
hours is required before the pump achieves its ultimate vacuum.
If all pump heads achieve a vacuum below 120 mbar but pump does not achieve the
ultimate total pressure:
Check hose connectors between pump heads and manifolds for leaks. If necessary
recheck pump chamber.