VACUUBRAND PC 620 NT User Manual
Page 45
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.: 999188 / 19/05/2009
Fault
Possible cause
Remedy
❑ No digital pressure read-
ing, warning triangle is
flashing, five or seven
blips*.
➨
➨
Five blips: External sensor
defective or removed?
Seven blips: Internal sensor
defective?
✔
✔
Plug in sensor or use new
one or reconfigure without
sensor.
Contact local distributor.
❑ Warning triangle and
pump symbol are flash-
ing, six blips*.
➨ NT VARIO / VARIO-B pump
and VMS** connected?
✔ Disconnect one component,
restart controller.
➨ Fault at the VARIO pump or at
the VMS?
✔ Check pump and/or VMS or
reconfigure.
➨ Fault at the NT VARIO /
VARIO-B pump?
✔ Check pump and cable con-
nections, restart controller.
❑ Clock symbol is flashing,
control has stopped.
➨ Preselected process time has
passed?
✔ Confirm by pressing key
START/STOP.
❑ Internal venting valve
does not react, valve
symbol is displayed.
➨ External pressure transducer
connected and active?
✔ Select internal pressure
transducer or connect exter-
nal venting valve.
❑ Venting valve does not
respond, valve symbol is
displayed.
➨ Venting valve contaminated? ✔ Clean valve.
❑ Function ”Vac control”:
Control stops, ”arrow up”
is flashing.
➨ Preset maximum pressure
exceeded?
✔ Confirm by pressing key
START/STOP. Adapt maxi-
mum pressure value if nec-
essary.
❑ Function ”Pump down”:
Control stops, ”arrow
down” is flashing.
➨ Pressure below preset mini-
mum pressure?
✔ Confirm by pressing key
START/STOP. Adapt mini-
mum pressure value if nec-
essary.
❑ Function is not displayed,
no menu.
➨ No controllable device con-
nected (valve, VMS, VARIO
pump)?
✔ Connect devices or use con-
troller as measuring device.
❑ Controller does not
respond when pressing
keys (except ON/OFF).
PC symbol is displayed.
➨ Controller in remote mode?
✔ Control CVC 3000 via in-
terface or switch off remote
mode.
❑ Controller does not
respond when operat-
ing any keys. No change
after switching off/on.
✔ Contact local distributor.
❑ Pump does not start or
stops immediately. Warn-
ing triangle and pump
symbol are flashing.
➨ Pump has been exposed to
condensate?
✔ Allow pump to run for some
minutes with atmospheric
pressure at the inlet.
➨ Device fuse blown?
✔ Identify cause of failure. Re-
place device fuse.
➨ Overpressure in the exhaust
line?
✔ Open exhaust line, ensure a
free (pressureless) outlet line.