Air Cooling; Venting Valve; Sealing Gas Connection - Pfeiffer Vacuum HIPACE 800 Operating Instructions Manual

5.7.1

Air cooling

5.7.2

Venting valve

5.7.3

Sealing gas connection

As an option, turbopumps with the electronic drive unit TC 400 may be operated with air
cooling up to an ambient temperature of +35 °C.
3b
3c
Fig. 7: Connecting the air cooling
3 Pump lower part
3a Air cooling unit
 Fix the air cooling unit to the holes of the turbopump using two screws.
 Plug in and fix the accessory's control lead to the corresponding accessory connection
port on the electronic drive unit.
 Default for air cooling is "accessory A1".
The Pfeiffer Vacuum venting valve is used for automatic venting in case of shut-down or
power failure.
The permissible connection pressure is max. 1500 hPa absolute.
Fig. 8: Connecting the venting valve
18 Seal ring
 Unscrew the venting screw with seal ring from the venting connection.
 Screw in the venting valve with seal ring.
 Plug in and fix the accessory's control lead to the corresponding accessory connection
port on the electronic drive unit.
 Default for the venting valve is "accessory B1".
 If neccessary install a venting gas supply (e.g. inert gas) to the intake (G 1/8") of the
solenoid valve.
The turbopump must be operated with sealing gas to protect it, such as in the case of
unclean processes or high gas throughput. The supply is made via a sealing gas valve
or alternatively via a sealing gas throttle without control. The activation of the control
valve for the sealing gas connection is not pre-installed in the electronic drive unit and
has to be configured via their interfaces.
3a
3
3b Allen head screw
3c Counter-sunk screw
18
17 Venting screw 17a Venting valve
Installation
17
17a
23