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VACUUBRAND PC 3012 VARIO plastic housing User Manual

Page 97

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page 97 of 129

Fault

Possible cause

Remedy

❑ Controller does

not respond when

operating any keys.

No change after

switching off/on.

✔ Contact local distributor.

❑ Pump does not

start or stops im-

mediately. Warning

triangle and pump

symbol are flash-

ing.

➨ Pump has been ex-

posed to condensate?

✔ Allow pump to run for

some minutes at maxi-

mum speed with atmo-

spheric pressure at the

inlet.

➨ Overpressure in outlet

line?

✔ Remove blockage in line,

open valve.

➨ Motor overloaded?

✔ Allow motor to cool down,

identify and eliminate

cause of failure. Manual

reset is necessary. Switch

off pump or unplug.

❑ Pump does not

achieve its ultimate

vacuum or usual

pumping speed.

➨ Centring ring at small

flange connection not

correctly positioned, or

leak in the pipeline or

vacuum system?

✔ Check pump directly

- connect CVC 3000 di-

rectly at pump inlet - then

check connection, pipe-

line and vacuum system if

necessary.

➨ Wrong setting at con-

troller?

✔ Select function ”Pump

down” with speed set to

”HI” and check again.

➨ Long, narrow vacuum

line?

✔ Use lines with larger di-

ameter, length as short as

possible.

➨ Pump has been ex-

posed to condensate?

✔ Allow pump to run for

some minutes with atmo-

spheric pressure at the

inlet to purge.

➨ Deposits have been

formed inside the

pump?

✔ Clean and inspect the

pump heads.

➨ Diaphragms or valves

damaged?

✔ Replace diaphragms and/

or valves.

➨ Outgassing substances

or vapor generated in

the process?

✔ Check process parame-

ters.