
6
Maintenance
6062-en_V2.4_02/21
67
6.3.1
Cleaning optical glasses on AQ Guard (model
without weatherproof housing and IADS)
Switching off device and disconnecting from power supply
1.
Close the firmware by selecting
Shut Down
.
2.
Unplug the power cable and all other cables.
Detaching wall bracket and sampling head
AQ Guard – detaching wall bracket and sampling head
1.
Remove the screw from the underside of the wall bracket.
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The device can now be detached from the wall bracket.
2.
Detach the device from the wall bracket.
3.
Unscrew the sampling head.