1
Vacuum flange
7
Cooling water control valve
2
Roots pump Okta G
8
Pressure monitor
3
Measurement connection, temperature
9
Cooling water connection, inlet
4
Cooling water connection, outlet
10
Dirt trap
5
Gas cooler
11
Cooling water control valve temperature sensor (meas-
urement connection)
6
Fore-vacuum connection
Procedure
1. Make sure that the outlet is unpressurized and that a visual check can be made of the flow rate.
– The best method is the free outflow of cooling water via a funnel.
– As an alternative, a flow indicator can be installed in the line immediately on the pump con-
nection.
2. Connect the cooling water lines according to the connection diagram
3. Open the supply provided on site.
4. Open the bypass valve and at the same time fill the cooling system until cooling water is emitted
at the outlet.
5. Close the bypass valve.
Installing the pressure monitor (optional)
The installation of a cooling water pressure monitor protects the roots pump effectively against cooling
water failure.
The use of a conventional flow monitor or flow indicator is possible.
1. If necessary, close the pressure monitor and solenoid valve for monitoring and control of the cool-
ing water flow according to the installation instructions of the manufacturer.
2. Set the required switching pressures:
– minimum: 300 hPa
– maximum: 10000 hPa
5.9 Establishing mains connection
DANGER
Danger to life from electric shock
Contact with exposed and live elements generate an electric shock. Incorrect connection of the mains
supply leads to the risk of live housing parts that can be touched. There is a risk to life.
► Before the installation, check that the connection leads are voltage-free.
► Make sure that electrical installations are only carried out by qualified electricians.
► Provide adequate grounding for the device.
► After connection work, carry out an earthed conductor check.
WARNING
Danger to life from electric shock due to improperly performed installation
The device uses voltage that is dangerous on contact as the electrical power supply. Potentially fatal
situations arise due to unsafe or incorrectly installation when reaching into the device.
► Ensure that the system is safely integrated into an emergency off safety circuit.
► Do not carry out any unauthorized modifications or changes to the device.
CAUTION
Danger of injury from moving parts
After a power failure or a standstill as a result of overheating, the motor restarts automatically. There
is a risk of injury to fingers and hands if they enter the operating range of rotating parts.
► Safely disconnect motor from the mains.
► Secure the motor against reactivation.
► Dismantle the vacuum pump for inspection, away from the system if necessary.
Installation
28/56
