KNF SCC 950 Operating Instructions Manual page 51

Vacuum pump system SCC 950
Software operation
Error
The PC software cannot
establish a connection with
the vacuum pump system.
Pressure display shows
implausible values.
Translation of original Operating Instructions, English, KNF 304771-304773 07/18
Possible cause
Vacuum pump system is
not switched on.
The USB connection
between the system and
the PC is not working.
Pressure units were
changed.
Leak in the system.
Pressure sensor has to be
recalibrated.
Tab. 11
Fault persists
If you are unable to identify the cause of the problem, please send
the vacuum pump system to KNF Customer Service (see address
on last page).
1. Rinse vacuum pump system to free the pump head, lines and
glass vessels of dangerous or aggressive gases (see Chapter
9.2.1, page 37).
2. Clean the vacuum pump system (see Chapter 9.2.2, page 37).
3. Send the vacuum pump system with completed Health and
safety clearance and decontamination form (see Chapter 13),
to KNF stating the nature of the transferred medium.
Remedy
 Switch on the vacuum pump system
 Check that the USB cable is properly
connected. If necessary, disconnect
the USB cable and reconnect it (re-
set the USB interface).
 Select the desired pressure unit.
 See Tab. 9, "Insufficient vacuum
generated although the pump is run-
ning."
 Contact KNF Service.
Troubleshooting
51