Operation
19
6.4 Switching off the pumping station
Close shut-off valve in the intake line and separate the pump from the process.
Switch off the pumping station.
Flush pumping station with flushing gas, if necessary.
Dry the pump completely inside after flushing.
Switch off process-specific and pump-specific media supplies.
Venting.
When shutting down for longer periods, see the operating manuals of the individual
components.
6.5 Operating the pumping station with a control cabinet
To ensure a safe process, operate the pumping station as follows:
Status at standstill
– Shut-off valve intake line closed, if present.
– Exhaust valve closed, if present.
– Master switch 9.10 on control panel in position "0".
Operation and
display elements
The following illustration is merely an example. The number, arrangement and assign-
ment of the keys and lights may differ from the specific version supplied.
Fig. 2: Example of versions with a control cabinet
Switching on the
pumping station
Open exhaust valve (ball valve), if present.
Turn master switch 9.10 to the "1" position.
Switch on pump stand using key 9.6 on controller.
– The switch-on sequence is specified by the controller.
– Let the pumping station warm up until it reaches operating temperature.
Open shut-off valve in the intake line (ball valve), if present.
Switching off the
pumping station
Close shut-off valve in the intake line (if present).
Switch off pumps by pressing key 9.7; let pumps continue to run if necessary.
9
Control cabinet
9.2
"Pump 1 in operation" lamp
9.3
"Pump 2 in operation" lamp
9.4
"Thermistor protection mal-
function" lamp
9.5
"Fuse tripping phase se-
quence malfunction" lamp
9.6
Pumping station "ON" key
9.7
Pumping station "OFF" key
9.8
Not assigned (option: remote/
manual key-operated switch
9.9
Lamp test
9.10 Master switch
Operating hours counter (internal)
9
9.3
9.2
9.6
9.7
9.10
9.4
9.5
9.9
9.8
Depending on the specific process, during process pauses the pumping station can be
operated continuously and flushed when the intake line is closed.
