User guide

page 46 of 61
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.: 999248 / 28/04/2011
Fault Possible cause Remedy
❑
No display.
➨
Mainsnotpluggedin?
✔
Plug in mains plug.
➨
Controller or pumping unit
switchedoff?
✔
Switch device on.
➨
BUS cable to internal power
supplynotpluggedin?
✔
Plug in BUS cable at control-
ler.
➨
Other causes (device defec-
tive)?
✔
Contact local distributor.
❑
Display disappears.
➨
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 the controller.
➨
Humidity inside the pressure
transducer?
✔
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ashing,displayshows
”0.0”.
➨
Pressure transducer not
correctly adjusted under
vacuum?
✔
Adjust controller correctly.
❑
No digital pressure read-
ing.
➨
Pressure transducer defec-
tive?
✔
Contact local distributor.
❑
Digital pressure reading
isashing,oneblip*.
➨
Overpressure at the pressure
transducer, pressure > 1060
mbar?
✔
Release pressure immedi-
ately(riskofbursting)!
❑
Warning triangle and
coolant valve symbol are
ashing,fourblips*.
➨
Coolant valve removed or
defective?
✔
Checkconnectioncableof
the valve or use new valve or
recongurewithoutvalve.
❑
No digital pressure read-
ing, warning triangle is
ashing,sevenblips*.
➨
Seven blips: Internal sensor
defective?
✔
Contact local distributor.
❑
Warning triangle and
pumpsymbolareash-
ing,sixblips*.
➨
Faultatthepump?
✔
Checkpump,restartcontrol-
ler.
❑
Clocksymbolisashing.
Control is stopped.
➨
Preselected process time is
over?
✔
Conrmbypressingkey
START/STOP.
9 Troubleshooting
* Blipsonlyifinfunction”Conguration”soundissetto”On”.