VACUUBRAND MV 10C VARIO - Manual (Page 45)

page 45 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.: 999073 / 15/12/2009
Montage of the connecting hose:
Individual performance check of a pump head:
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 85 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.
➂ ➂ ➂ ➂ ➂
➃ ➃ ➃ ➃ ➃ ➀ ➀ ➀ ➀ ➀
➁ ➁ ➁ ➁ ➁
By measuring the pressure at the inlet port of the individual
head:
➨ Use a suitable vacuum gauge (e. g. DVR 2, cat. no.: 68 29
02), make sure that it is correctly calibrated, and measure
the pressure at the inlet port. A vacuum of less than 85
mbar should be indicated.
☞ If the reading is higher, recheck the pump chamber and make
sure that the valves and the diaphragms are correctly seated
(diaphragms concentric with bore).
➨ Wind the attachment for the hose two times with PTFE bond
(only MV 10C VARIO / PC 2010 VARIO), see also ”Notes
on assembling fittings and hose connections (only
MV 10C VARIO / PC 2010 VARIO)”.
➨ Use open ended wrench (w/f 15) to reconnect hose to el-
bow fitting.
➨ Screw in four socket head screws fixing housing cover cross-
wise (e. g. in the sequence
➀, ➁, ➂, ➃) first slightly, then
tighten.
☞ Do not tighten until head cover is in contact with housing,
torque 12 Nm.
➨ Tighten union nuts first by hand and then tighten one full
turn using open ended wrench (w/f 17).