13
3.10. Connecting The Sealing Gas Valve
For protection pruposes the turbopumpe should be operated
with sealing gas, particularly where corrosive and dusty
processes are involved.
Even in non-corrosive processes, from 50% of the maximum
gas load sealing gas should be used to ensure rotor cooling.
Connection is made via the sealing gas valve 66 (please see
Section 11. Accessories).
3.9. Connecting The Venting Valve
The venting valve (see Section 11. Accessories) provides
automatic venting in the event of a power failure and
switching off.
Fitting the venting valve
➡
Unscrew the venting screw 4 (see Section 2.1.) from the
venting connection of the turbopump.
➡
Screw in venting valve 42 with seal (USIT ring) on
hexagonal SW 14.
Electrical connection
➡
Plug control lead 42a into the connection ”VENT“ of the
TC 750 (8) on the turbopump.
Release for venting is executed via remote plug pin 2 (pre-set
on delivery, please see Section 4.9.)
The venting mode of the venting valve is selected via the
DCU/HPU or Serial Interface RS 485.
The maximum pressure at the venting valve is
1.5 bar absolute.
Please refer to Operating Instructions PM 0507 BN for details
on Venting Valve TVF 005.
CAUTION
66
66a
15
9
Connecting the sealing gas valve
9
Locking screw sealing gas connection
15 Seal
66 Sealing gas valve
66a Seal
Please refer to Operating Instructions PM 0229 BN for details
on installing the sealing gas valve and adjusting the sealing
gas flow.
VENT
8d
8
42a
42a
42
42b
TC 750
TC 750
Connecting the venting valve
8
Electronic Drive Unit TC 750
8d Remote plug
42 Venting valve
42a Connector plug venting valve/TC 750
42b Plug
