VACUUBRAND CVC 3000 detect - Manual (Page 65)

page 65 of 74
Fault Possible cause Remedy
❑ No display. ➨ Power supply not
plugged in (wall plug)?
✔ Plug in power supply.
➨ CVC 3000 detect con-
troller switched off?
✔ Switch on controller.
➨ VACUU • BUS cable
of power supply not
plugged in at control-
ler?
✔ Plug in VACUU • BUS
cable at controller.
➨ Other than above men-
tioned causes?
✔ Contact local distributor.
❑ Display disappears. ➨ Too much load (e.g.,
valves) connected?
✔ Check current draw of the
connected devices.
➨ Short circuit at connect-
ed valves?
✔ Replace valves.
➨ Short circuit at the
RS 232 plug?
✔ Check plug and cable.
➨ Other than above men-
tioned causes?
✔ Contact local distributor.
❑ Pressure reading
incorrect.
➨ Pressure transducer
decalibrated?
✔ Readjust CVC 3000 detect
or external gauge head.
➨ Humidity in the pres-
sure transducer?
✔ Let the pressure trans-
ducer dry, e.g., by pump-
ing. Readjust if neces-
sary. Determine and
eliminate the cause for
humidity.
➨ Pressure transducer
contaminated?
✔ See ”Cleaning the pres-
sure transducer”.
➨ Other than above men-
tioned causes?
✔ Contact local distributor.
❑ Digital pressure
reading is flash-
ing, display shows
”0.0”.
➨ Pressure transducer
not correctly adjusted
under vacuum?
✔ Adjust CVC 3000 detect
or external gauge head
correctly.
❑ No digital pressure
reading.
➨ Pressure transducer
defective?
✔ Contact local distributor.
❑ Digital pressure
reading is flashing,
one blip*.
➨ Overpressure at the
pressure transducer,
pressure > 795 Torr
(1060 mbar)?
✔ Release pressure imme-
diately (risk of bursting).
Troubleshooting