Operation
6.4
Monitoring by Level Sensor
If the level sensor input is activated (optional), the device goes into
STOP
status when "Tank
full" is signalled. The water volume should amount to 20%.
6.5
Calibrating the Pressure Sensor
A two-point calibration is made with a comparison measurement device.
Calibration at ambient pressure:
Calibration at ultimate pressure:
The diaphragm pump is switched off.
The diaphragm pump is switched on.
The venting valve is open.
The venting valve will be closed.
The vacuum valve ist closed.
The vacuum valve will be open.
The ambient pressure to set.
The ultimate pressure to set.
CAUTION !
Instead of measuring the pressure with a comparison measurement device, the ulti-
mate pressure of the pump used may also be input if this is known with sufficient
accuracy (take note of evacuation time).
Ensure that the set pressure is also present at the sensor.
6.6 Handling
6.6.1 Control
panel
4
5
4a
1
2
3
1
START / STOP
2
AIR - Venting
3
P min
- pressure drop
4
Encoder (turn / press)
4a
Marking point on encoder
5
Display
Fig. 7 Control panel
22 Ilmvac
GmbH
115022
