Altana BYK Automatchic Vision - Light Protection Ring

40
15.2 Light protection ring
Cleaning:
You should use a soft, moist cloth for cleaning.
For cleaning excessive dirt, use ethanol, cleaning
alcohol or water and soap.
Changing:
Remove the worn down ring with a pointed object.
To insert the new ring, bend its inner edge slightly
upward before you insert it into the groove.
Cleaning and Maintenance