LEYBOLD TURBOTRONIKNT 340 M - Bakeout of the TURBOVAC; 3 Operation; Start-Up; Start-Up of the TURBOVAC

Operation
3 Operation
3.1 Start-up
Insert the power plug.
Switch on the POWER switch.
Having switched on the power switch the TURBOVAC’s
stabilizer is activated and the rotor lifts up.
Afterwards all LEDs light up for approx. 2 s for a func-
tional check. The green LED „POWER“ remains on.
On the TURBOTRONIK NT 340 MA and 341 MA with
temperature control the temperature control is switched
on.
It is not necessary to check or to recalibrate the rotor
position control system.
Setting the Start-up Delay
You can set a start-up delay for the TURBOVAC of up to
five minutes at the rear of the TURBOTRONIC at DELAY.
Due to the starting delay the TURBOVAC starts after the
forevacuum pump.
Selecting high or optimized speed
(only on NT 340 MA & NT 341 MA)
The TURBOVAC is designed for operation with optimized
speed.
In certain cases the standard speed which is set on deli-
very, can be increased (HIGH SPEED). Please contact
your local Leybold service representative.
Caution
HIGH SPEED operation may result in shor-
ter operational lifetime of the pump. Your
warranty may be voided.
3.2 Start-up of the
TURBOVAC
Pressing the START key initiates the acceleration
sequence; if a forevacuum pump is connected it will start
up immediately.
If a delay has been set, the START LED will flash during
the delay period, after which it will remain on con
tinuously and the TURBOVAC starts.
The NORMAL LED flashes during acceleration.The LED
chain indicates the increasing speed with one LED each.
When 95% of the target speed has been reached, the
LED NORMAL remains on continuously, the START LED
extinguishes.
During normal operation the LED chain indicates the
course of the increasing motor power consumption; the
increasing current (load) drawn by the TURBOVAC is
indicated by the LED chain with one LED each lighting
up after the other starting at the bottom and moving
upwards.
If the TURBOVAC exceeds the minimum speed within 8
minutes but does not attain 95 % of the target speed it
will change to OVERLOAD operation.
The LED OVERLOAD lights up and the LED chain indic-
ates the speed.
3.3 Bake-out of the
TURBOVAC
(only for NT 340 M)
Bake-out is only possible with the CF version during
NORMAL operation.
Pressing the HEATING key switches the flange heater
ON and OFF. The green LED in the key lights up when
the heating is ON.
With preselection the LED flashes during the accelera
tion phase; during NORMAL and activated heating the
LED lights continuously.
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GA 05.218/3.02 - 11/97