BUSCH PLUS Master Control, Instruction Manual, Page: 8 / 44

5 | Installation and Commissioning
8 / 44 Instruction Manual PLUS Master Control R5 PLUS_EN_en
Isolation Valves
Optionally, isolation valves (not included in the scope of delivery of the vacuum pump)
can also be installed at the suction side of each pump to isolate them individually from
the process. In this case, the valves can be directly controlled by the PLUS Master Con-
trol.
NOTE
Contact Busch for more information.
Vacuum line*
*not included in the scope of delivery of the vacuum pumps
Isolation valve*
Vessel*
(vacuum
tank)
External pressure sensor*
Cable gland
NOTE
Installation of isolation valves.
The installation of controlled isolation valves at the suction side of the vacuum pumps
requires:
• the installation of an external pressure sensor located upstream of the valves, so that
the customer's process pressure information is known to the control system,
• the connection of the control signal of each valve to the control unit of the pump on
which it is mounted, to allow automatic actuation by the system.
ð For more information, refer to the instruction manual(s) of the respective pump(s).
• Busch recommends the installation of an isolation valve in order to prevent the
machine from turning backwards.
• Busch recommends the installation of an isolation valve in order to prevent the oil
from flowing back to the vacuum system.
• Busch recommends the installation of an isolation valve in order to prevent the
process gases and debris flowing back to the vacuum system.