12
Operation
6
Operation
6.1 Commissioning
The following important settings are programmed in the electronic drive unit ex
factory.
• Control max. run-up time: 8 min
• Gas mode: 0 = heavy gases
• Rotation speed switchpoint: 80% of the nominal roation speed
• Venting rotation speed at delayed venting: 50% of the nominal rotation speed
• Venting time: 3600 s
When water cooling is used: Open cooling water supply and check the flow.
When sealing gas is used: Open the sealing gas supply and check the flow.
6.2 Operation modes
The following operation modes are available:
• Operation without operating unit
• Operation via RS485 and Pfeiffer Vacuum display and control units or PC
6.3 Function description
Operation without
operating unit
Switch on the pumping station at the master switch.
After switching on the main switch, the electronic drive unit of the turbopump per-
forms a self-test to check the supply voltage. Once the self test has been success-
fully completed, the turbopump and the backing pump begin to operate.
CAUTION
Danger of the pump being destroyed
Pumping of gases with the molecular mass> 39 in the wrong gas mode can lead to
destruction of the pump.
Ensure the gas mode is correctly set.
Contact Pfeiffer Vacuum before using gases with a greater molecular mass (> 80).
WARNING
Danger due to open high vacuum flange
The rotor of the turbopump turns at high speed. If the high vacuum flange is open,
there is a danger of cut injuries and that the pump can be destroyed by objects falling
into it.
Never operate the pump with an open high vacuum flange.
CAUTION
Automatic start
After connecting the supply voltage and switching on the main switch, pumping stati-
ons
without
display and control unit will run up immediately.
Switch the mains switch to position "0" before plugging in the mains cable.
Switch on the mains supply immediately before operation.
