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page 50 of 75
Fault
Possible cause
Remedy
Pump does not
start or stops im-
mediately.
Electrical power cord
not plugged in, electri-
cal supply failure?
Plug in power cord.
Check fuse.
Device fuse blown?
Identify cause of failure.
Replace device fuse.
Overpressure in outlet
line?
Remove blockage in line,
open valve.
Motor overloaded?
Allow motor to cool down,
identify and eliminate
cause of failure. Manual
reset is necessary. Switch
off pump or unplug.
Pump does not
achieve its ultimate
vacuum or usual
pumping speed.
Centring ring at small
correctly positioned, or
leak in the pipeline or
vacuum system?
Check pump directly -
connect vacuum gauge
directly at pump inlet -
then check connection,
pipeline and vacuum
system if necessary.
line?
Use lines with larger di-
ameter, length as short as
possible.
Pump has been ex-
posed to condensate?
Allow pump to run for
some minutes with atmo-
spheric pressure at the
inlet to purge.
Deposits have been
formed inside the
pump?
Clean and inspect the
pump heads.
Diaphragms or valves
damaged?
Replace diaphragms and/
or valves.
Outgassing substances
or vapor generated in
the process?
Check process parame-
ters.
Troubleshooting
Содержание MD 4C NT + 2 AK
Страница 25: ...page 30 of 75 ME 4C NT 1 5 4 7 6 8 2 ME 2C NT 1 5 4 7 6 8 2 ...
Страница 27: ...page 32 of 75 ME 8C NT MD 4C NT 1 5 3 4 7 6 2 8 8 5 4 7 6 1 ...
Страница 50: ...page 55 of 75 Fittings and tubing of the different pump models ME 4C NT MZ 2C NT ME 8C NT MD 4C NT ...
Страница 67: ...page 72 of 75 tive mark Licensed Test mark on the pump rating plate ...
Страница 68: ...page 73 of 75 China RoHS ...
Страница 69: ...page 74 of 75 ...