Replace air filter (blue filter)

Remove of the top cover

1. Switch Instrument OFF.
2. Remove the two rear screws of the top cover.
3. Lift the top cover carefully from the ESR unit.

Air filter replacement QWLV040003

1. Pull both tube connectors out of the blue filter.
2. Place new blue filter
3. Reconnect the tube connectors on the filter

Replace the top cover:

1. Put the cover carefully over the ESR unit.
2. Fasten the two rear screws of the top cover. (If present/if needed).