VACUUBRAND PC 620 NT User Manual
Page 46
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.: 999188 / 19/05/2009
* Blips only if in function ”Configuration” sound is set to ”On”.
** VMS: Vacuum Management System to switch a non-VARIO-pump
Attention: All error messages have to be confirmed (deleted) by pressing key START/STOP.
Fault
Possible cause
Remedy
❑ Pump does not achieve
its ultimate vacuum or
usual pumping speed.
➨ Wrong setting at controller?
✔ Choose function ”Pump
down” and check again.
➨ Leak in the pipeline or vacu-
um system?
✔ Check connection, pipeline
and vacuum system.
➨ Long, narrow line?
✔ Use lines with larger di-
ameter, length as short as
possible.
➨ Pump has been exposed to
condensate?
✔ Allow the pump to run for
some minutes with open inlet
port.
➨ Deposits have been formed
inside the pump?
✔ Clean and inspect the pump
heads.
➨ Diaphragms or valves defec-
tive?
✔ Replace diaphragms and/or
valves.
➨ Outgassing substances or
vapour generated in the proc-
ess?
✔ Check process parameters.
➨ Pump too hot?
✔ Allow pump to cool down,
identify and eliminate cause
of failure. Manual reset is
necessary. Switch off pump
or unplug mains.
❑ Pump too noisy.
➨ Loud exhaust noise?
✔ Connect hose or silencer to
pump outlet.
➨ Diaphragm crack or dia-
phragm clamping disc loose?
✔ Perform maintenance.
➨ Other than above mentioned
causes?
✔ Contact local distributor.
❑ Pump seized.
✔ Contact local distributor.