Troubleshooting – VACUUBRAND PC 3012 VARIO User Manual
Page 52
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.: 999164 / 19/05/2009
Fault
Possible cause
Remedy
❑ No display.
➨ Mains not plugged in?
✔ Plug in mains plug of NT
VARIO / VARIO-B pump.
➨ Controller CVC 3000 or
pump NT VARIO / VARIO-B
switched off?
✔ Switch on devices.
➨ VACUU • BUS cable between
pump and controller not
plugged in at controller?
✔ Plug in VACUU • BUS cable
at controller CVC 3000.
➨ Other causes (device defec-
tive)?
✔ Contact local distributor.
❑ Display disappears.
➨ Too much load (e.g. valves)
connected?
✔ Check current draw of the
connected devices.
➨ Short circuit at connected
valves?
✔ Replace valves.
➨ Short circuit at the RS 232
plug?
✔ Check plug and cable.
➨ Other causes (device defec-
tive)?
✔ Contact local distributor.
❑ Pressure reading incor-
rect.
➨ Pressure transducer not
adjusted?
✔ Readjust CVC 3000.
➨ Humidity in the measurement
chamber?
✔ Let the pressure transducer
dry, e.g. by pumping. Read-
just if necessary. Determine
and eliminate the cause for
humidity.
➨ Pressure transducer contami-
nated?
✔ See „Cleaning the pressure
transducer“.
❑ Digital pressure reading
is flashing, display shows
”0.0”.
➨ Pressure transducer not
correctly adjusted under
vacuum?
✔ Adjust CVC 3000 correctly.
❑ No digital pressure read-
ing.
➨ Pressure transducer defec-
tive?
✔ Contact local distributor.
❑ Digital pressure reading
is flashing, one blip*.
➨ Overpressure at the pressure
transducer, pressure > 1060
mbar?
✔ Release pressure immedi-
ately (risk of bursting).
❑ Warning triangle and
black valve symbol are
flashing, two blips*.
➨ External venting valve re-
moved or defective?
✔ Connect valve or replace by
a new one or reconfigure
without valve.
❑ Warning triangle and
valve symbol are flash-
ing, three blips*.
➨ NT VARIO / VARIO-B pump
and in-line valve connected?
✔ Disconnect in-line valve,
switch controller off/on.
❑ Warning triangle and
coolant valve symbol are
flashing, four blips*.
➨ Coolant valve removed or
defective?
✔ Check connection cable of
the valve or use new valve or
reconfigure without valve.
Troubleshooting