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Operation
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6.3.3
Mode 3, Ultimate pressure
By pressing of the key
P min
evacuation takes place at maximum pump speed until the user
presses
STOP
.
6.3.4
Mode 4, Self cleaning
The Mode "Self cleaning" is used for flushing the pump and can, if desired, also be carried
out several times in succession. After a waiting period of 5 seconds, the evacuation for 2
minutes (at maximum pump power and open vent valve) is carried out. A aborting the proc-
ess at any time by pressing the encoder
(4)
possible.
Self cleaning for Controller-
version „cv“:
The control valve (cv) remains closed when the
mode
Manual
or
Automatic
the "ventilation at STOP" parameter = "0".
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.
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 is 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
1
START - STOP
4
2
AIR
- ventilation
3
P min
- pressure drop
5
Encoder (turn / press)
with marking point on encoder
Display
Fig. 9 Control panel