Use; General; Startup; Operating - Varian Turbo-V 1800 Manual De Instrucciones

TECHNICAL INFORMATION

USE

General

Make all vacuum manifold and electrical connections
and refer to Turbo-V Instruction Manual prior to
operating the Turbo-V controller.
To avoid injury to personnel and damage to the
equipment, if the pump is supported by its legs, make
sure it is steady and attach the pump legs to legs
where the rubber feet are installed.
NOTE
The forepump and the Turbo�V pump can be switched
on at the same time if a pressure less than 1 mbar is
obtained in the chamber within the Turbo-V pump start­
up time.
If the vacuum chamber is larger, it must be roughed
down before starting the Turbo-V pump.
NOTE
The logic plug should be left in position including the
shipping links if no external interconnections are made.
To operate the Tur�V pump and controller either
remotely or from the front panel, proceed as follows:

Startup

•
Plug the controller power cable into a suitable
power source.
•
Switch the mains circuit breaker on the rear panel to
ON. The RPM display will display the 27.0.
•
If forepump and vent device are not operated by the
controller, close the vent valve and switch on the
forepump.
NOTE
With the START/STOP front panel button pressed the
remote signal is inoperative and viceversa.
•
Press the ST ART button or use the remote Start
signal: the FREQUENCY L.E.D.'s will light, and the
power output will be at the maximum level. The
frequency and the RPM display
minimum values (1/15 of the nominal frequency if
the pump is completely stopped) or to a higher
value proportional to the rotational speed of the
pump.
WARNING!
will to go the
The pump will accelerate to its rated rotational
speed, the frequency display lights up to 100%,
and the RPM display shows 27.0.
When this speed is reached about half of the
power L.E.D.'s will remain lighted to indicate that
the normal condition has been reached.
•
During the acceleration period, if the system has
a vacuum leak or the pressure in the
pump/chamber is higher than 1 mbar, the power
L.E.D.'s will continue to stay fully or partially on
and if after 6 minute from Start the controller
output frequency has not archived ¼ of the
nominal value, the Turbo-V pump is stopped,
the overload L.E.D. will light, and the fault
display shows number 2.

Operating

• When the gas load at the turbopump inlet flange
increases, the power drawn by turbopump
increases (all L.E.D.'s will be on) to maintain the
rotational speed. This will occur either in normal
operation or with the Low Speed switch
engaged. When the gas load become higher,
first the controller frequency, then the voltage
starts to decrees automatically. The Turbo-V
pump is slowed down proportionally to the gas
load at least until it reaches 1/3 of the nominal
speed. Subsequently the power drawn by the
turbo pump increases to the overload threshold.
At this point the
interconnected accessories are stopped.
•
The pump can be stopped at any rotational
speed and can be restarted at any rotational
speed from either the front panel buttons or the
remote connections.
automatically synchronizes the output to the
rotational speed of the pump and accelerates up
to the nominal speed.

Overload

•
For the following conditions the OVERLOAD
L.E.D. will light and the fault display indicates
the error code shutting down the output power to
the turbo pump,
connected):
1. If the pump is overheated (above 80
Fault display shows #5
2. If the current drawn by the pump exceed 7.2
ADC for more than 20 second, the Fault
display shows #2
3. If the controller (transformer, power device)
is overheated, the Fault display shows #4
4. If the pump rotational frequency has not
reached 120 Hz within 6 minutes from start,
the Fault display shows #1
5. If during the start-up time the current level
exceeds 21 ADC, the Fault display shows #0
• When the fault that caused an overload
condition is corrected, press the START/STOP
button twice to restart.
turbopump and the
The controller
and the forepump (if
°
C), the