Operation
6.2.8
Setting the after-running time for the cooling water
The cooling water valve (optional) can be used to cut-off a cooling circuit after a time delay
after pressing
STOP
. The after-running time tH can be set for all manual and all automatic
modes (1, 2, 5, 6). The value tH = 0 is a special case. In this case, the cooling water valve
remains open, even after
STOP
.
6.3 Calibration
The calibration menu enables long-term changes in the pressure sensor to be compensated
for. Calibration should take place every six months or whenever displayed pressures cease
to be plausible.
We recommend that the calibration be performed with a comparison measurement device.
For this, the measured values: normal
3)
and low pressure must be input.
Calibration can be made on the control panel or somewhat more easily with the "ILMVAC-
Control" PC program
(see chapter 6.4).
6.3.1
Run via control panel
#
Switch the device on at the HS ("Hauptschalter" - main switch, rear side of device)
#
Press the OK key for 3 seconds
#
Select the calibration parameter CL (
↑
,
↓
)
#
Press the OK key – “E” appears in display
#
Evacuate until ultimate pressure < 50 mbar
#
Set the pressure from the comparison measurement device with the cursor keys
↑
UP
and
↓
DOWN
#
Confirm correspondence with OK, this is followed by automatic venting to atmospheric
pressure.
#
Press the
↑
UP key – CH appears in the display (Calibrate, High)
#
Press the OK key – "E" appears in display
#
Set the daily air pressure with the cursor keys
↑
UP and
↓
DOWN
#
Press the OK key – "E" disappears
#
Press the STOP key to leave the setting level, setting is stored
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.
3) daily air pressure / barometric pressure
22 113184