1. Close the operating unit.
The firmware stops.
2. There is a mains switch on the back. Turn off the oil breakdown voltage tester.
3. To disconnect the device completely from the mains voltage, pull out the mains plug.
4. Open the protective cover.
5. Remove the test vessel.
6. Empty the test vessel and dispose of the oil sample in an environmentally friendly
manner and in accordance with the applicable national regulations.
7. To prevent contamination of the test vessel, store the test vessel as follows:
Fill the test vessel with new, filtered oil.
or
Clean the test vessel with petroleum ether and store the closed test vessel in a dust-
free environment.
Further information: IEC 60156, ASTM D877, chapter Cleaning the oil breakdown
voltage tester (on page 72)
8. Close the protective cover.