KNF SC 920 G Mode D'emploi page 83

Vacuum Pump System SC 920G
Software operation
Problem
PC software unable to
connect to vacuum pump
system.
Pressure display shows
implausible values.
Translation of original Operating Instructions, English, KNF 334631-334633 07/21
Cause
Vacuum pump system not
switched on.
USB connection between
system and PC is not
operating correctly.
Unit of pressure for display
has been changed.
Leaks in system.
Recalibration of pressure
sensor required.
Tab. 8
Fault cannot be rectified
If you are unable to determine any of the specified causes, send
the vacuum pump system to KNF Customer Service (see last page
for the address).
1. Flush the vacuum pump system to free the pump head, tubing
and glas vessels of dangerous or aggressive gases (see
chapter 9.2.1, page 30).
2. Clean the vacuum pump system (see chapter 9.2.2, page 30).
3. Send the vacuum pump system, together with completed
Health and Safety Clearance and Decontamination Form, to
KNF stating the nature of the transferred medium.
Troubleshooting
Solution
 Switch vacuum pump system on.
 Check correct connection of USB
cable. If necessary, pull out the USB
cable and reinsert (USB interface
reset).
 Set desired unit of pressure.
 See Tab. 8, "Required vacuum not
generated even though pump is
running".
 Contact KNF Service.
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