Installation
19
Air cooling
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.
Fix the Pfeiffer Vacuum 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 TC 400.
Default for air cooling is "
accessory A1
".
Venting valve
The Pfeiffer Vacuum venting valve is used for automatic venting in case of shut-down or
power failure.
The permissible connection pressure is max. 150 kPa absolute.
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 TC 400.
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.
Fig. 6:
Connecting the air cooling
3
Pump lower part
3a
Air cooling unit
3b
Allen head screw
3c
Counter-sunk screw
3a
3b
3c
3
Fig. 7:
Connecting the venting valve
18
Seal ring
17
Venting screw
17a Venting valve
17a
17
18
