Leybold vacuum TURBOTRONIK NT 10 Operating Instructions Manual
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– 30 –© LEYBOLD VAKUUM GMBH GA 05.212/10 - 09/00Fault„Power“ LED not lit •TURBOTRONIK is not connected to the supply• Supply switch not switched-on (only NT 10).• Fuse blownEstablish the connection to the supplySwitch-on the power switch at the rear panel of theTURBOTRONIK NT 10Check the fuse (refer to Fig. 11) and if required, replace.Open-up the TURBOTRONIK as explained under Sections 5.1and 5.2.•Leak in the vacuum system so that the rated speed is notreached.•Gas has leaked into the vacuum system, so that when the fi-nal speed is reached, it decreases as a result of the excessivegas frictionSeal the vacuum systemNoteGas leaks cause the speed to be reduced. If the speed fallsbelow approximately 40% of the rated speed, TURBOTRONIKswitches again to “ACCEL”. TURBOTRONIK automatically runs-up again if the leak is not excessive.•The TURBOVAC motor winding has exceed the permissiblelimit temperature, e.g. due to an inadmissibly high ambienttemperature, or inadequate cooling.•The resonance monitoring has shutdown the drive, becausethe pump speed was within the speed range between 45,000and 55,000 RPM for longer than one minute.Let the TURBOVAC cool down. Improve the cooling!Reset the fault by actuating “STOP”. Power-down theTURBOVAC using the appropriate pushbutton or remotecontrol and then restart it.Change the operating conditions so that the pump can rotateabove 55,000 RPM. For TURBOVAC 50, the resonancemonitoring function can be disabled (refer to Section 5.5).“ACCEL” LED, “NOR-MAL” LED do not lightup even after anadequate accelerationtimeïPosible cause / Counter-measure“FAIL” LED is lit (FAILrelay is active, whenthe appropriate circuitryis available), and theTURBOVAC speeddrops.TROUBLESHOOTING 6 |
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