
Troubleshooting
56
17200492_002_A5 - 04/2011 - © Oerlikon Leybold Vacuum
Error
code
Error
Possible Cause
Remedy
Shut-
down
–
Turbomolecu-
lar pump does
not reach ulti-
mate
pressure.
Measurement instrument
defective
Measurement sensors
soiled
Leaks at the equipment,
lines or the pump
Pump soiled
Forevacuum pump pro-
vides insufficient pumping
speed or ultimate pressure
which is too high.
Frequency parameters
programmed wrongly
Inspect the measurement
sensor
Clean or replace the
sensors
Check for leaks
Clean the pump
Check the ultimate pres-
sure of the forevacuum
pump and install a higher-
capacity vacuum pump if
necessary
Check parameters.
no
–
Running
pump can not
be stopped
via X1
Pump has been started via
the serial interface, the
interface controls the
pump
Disconnect the DC supply
or connect serial interface
and stop via bus
no