Atlas Copco GA 160 VSD, Instruction Book

Page: 93 / 112

7 DD filter
7.1 Maintenance
When maintaining the filter, keep in mind the following:
• On filters with manual drain valve, open the latter at regular intervals to evacuate collected dust or liquid
• Change the filter element yearly or when the pressure drop reaches approx. 0.35 bar
• In case an automatic drain valve is installed, manual draining can be carried out by turning the connection
nipple of the automatic drain valve counterclockwise .
•
When the filter has to process air with a temperature higher than the specified maximum
temperature, the filter's lifetime will be reduced considerably!
7.2 Service intervals
The following service intervals should be observed:
• For filters operating less than 4000 hours per year: 12 months.
• For filters operating 8000 hours per year: 4000 hours or 6 months, whichever comes first.
7.3 Filter element change
Procedure
When maintaining the filter, keep in mind the following:
1. Isolate the filter from the air net.
2. Depressurize the filter by turning the connection nipple of the automatic drain valve counterclockwise or
by opening the manual drain valve.
3. Unscrew the bowl. A whistling noise will warn you if the bowl is not fully depressurized. If this occurs,
the bowl should be screwed back and the venting should be repeated.
Instruction book
APF192090 91