6 Maintenance
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59
6.4.7.3 Checking the device condition
An application is selected for the device inspection.
1. Select
Device condition
.
2. A sequence of queries appears. Answer these.
Yes
No
a)
Device condition: Display inverted?
Does the display show
2
all pixels with the opposite colour
assignment?
b)
Device condition: Signal light and buzzer switched on?
Is the audible signal audible and the visual signal visible?
c)
Device condition: Housing OK?
Is the housing free from external damage?
The device condition check is now complete. The device
switches back one menu level.
6.4.7.4 Testing the pump
An application is selected for the device inspection.
1. Select
Pump
.
2. If the following message appears:
Disable gas input!
● Seal off the gas inlet, e.g. using a finger.
3. If the following message appears:
Release gas input!
●
Release the gas input again.
The test of the pump is now complete. The device switches
back one menu level.
2
White pixels are displayed black, black pixels are displayed white.
