Maintenance And Cleaning - WIKA A2G-20 Betriebsanleitung

5. Commissioning ... / 6. Maintenance and cleaning
In the example shown, the switch point is set to 1.5 m/s and the
hysteresis to 0.25 m/s. When the velocity rises above 1.5 m/s, the relay
opens or closes. When the velocity subsequently drops, the relay only
opens or closes again if the velocity falls below the hysteresis range (to
EN
1.25 m/s). This prevents a fast change-over.
The maximum setting of the hysteresis is based on the selected range:
Range in m/s
0 - 2
0 - 10
0 - 20

6. Maintenance and cleaning

For contact details see chapter 1 "General information" or the
back page of the operating instructions.
6.1 Maintenance
This instrument is maintenance-free and offers long service life provided
it is handled and operated properly.
Repairs must only be carried out by the manufacturer or appropriately
qualified skilled personnel.
6.2 Cleaning
CAUTION!
Physical injuries and damage to property and the
environment
Improper cleaning may lead to physical injuries and damage
to property and the environment. Residual media in the
dismounted instrument can result in a risk to persons, the
environment and equipment.
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18
Maximum hysteresis in m/s
0.4
2
4
Carry out the cleaning process as described below.
WIKA operating instructions model A2G-20