6.3 Switching on the turbopump
WARNING
Danger of cut injuries from unexpected start up.
The use of mating plugs of the electronic drive unit (accessories) enables the automatic run-up of the
vacuum pump as soon the power is turned on. Attaching mating plugs before or during the installa-
tion leads to the movement of parts hence the risk of cut injuries by sharp-edged in the exposed high
vacuum flange.
► Only connect mating plugs after the mechanical installation.
► Only switch on the vacuum pump immediately prior to operation.
WARNING
Risk of burns on hot surfaces when using additional equipment for heating during operation
The use of additional equipment for heating the vacuum pump or for optimizing the process gener-
ates very high temperatures on surfaces that can be touched. There is a risk of burning.
► If necessary, set up a contact guard.
► If necessary, apply the warning stickers provided for this at the danger points.
► Ensure adequate cooling down before working on the vacuum pump or in its vicinity.
► Wear protective equipment, e.g., gloves.
WARNING
Risk of serious injury in the event of vacuum pump destruction due to over pressure
Gas entry with very high over pressure results in destruction of the vacuum pump. There is a risk of
serious injury due to ejected objects.
► Never exceed the permissible 1500 hPa (absolute) inlet pressure on the suction side or the vent-
ing and sealing gas connection.
► Make sure that high, process-related over pressures cannot directly enter the vacuum pump.
Switching on the turbopump
► Connect the power supply pack to the mains power supply on the customer-side.
► Switch on the power supply pack.
6.4 Operation monitoring
6.4.1 Operating mode display via LED
LEDs on the electronic drive unit show the basic operating states of the vacuum pump. A differentiated
error and warning display is only possible for operation with the Pfeiffer Vacuum display and control unit
or a PC.
LED
Symbol LED status
Display
Meaning
Green
Off
Currentless
On, flashing
"pumping station OFF", rotation speed
≤ 60 rpm
On, inverse flashing
"pumping station ON", set rotation speed not
reached
On, constant
"pumping station ON", set rotation speed
reached
On, flashing
"pumping station OFF", speed > 60 rpm
Yellow
Off
No warning
On, constant
Warning
Operation
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