Vacuubrand PC 620 NT User Manual download pdf (Page 44)

page 44 of 63

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

Troubleshooting

Fault Possible cause Remedy

❑

No display.

➨

Mains not plugged in?

✔

Plug in mains plug of pump-

ing unit.

➨

Device switched off?

✔

Switch on device.

➨

VACUU • BUS cable to inter-

nal power supply 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.

➨

Device 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 read-

ing is ashing, ”0.0” is

displayed.

➨

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 ashing, one blip*.

➨

Overpressure at the pressure

transducer, pressure > 1060

mbar?

✔

Release pressure immedi-

ately (risk of bursting).

❑

Warning triangle and

black valve symbol are

ashing, two blips*.

➨

External venting valve re-

moved or defective?

✔

Connect valve or replace by

a new one or recongure

without valve.

❑

Warning triangle and

valve symbol are ash-

ing, three blips*.

➨

NT VARIO / VARIO-B pump

and in-line valve connected?

✔

Disconnect one component,

switch controller off/on.

❑

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.

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Vacuubrand PC 620 NT User Manual Page 44

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