OPERATING INSTRUCTIONS RH 340

Inspection and servicing

Safety filter element Replacement

Replace the safety filter elements (7, Fig. 3-42:) after 1000 operating hours or 3 cleaning cycles; after one year of operation at the latest.

Never clean the safety filter element, but always renew.

 Remove main filter element (5, Fig. 3-43:) as described above.

 Check the vacuum indicator (6, Fig. 3-42: resp. arrow Fig. 3-44:) whether - the green spot is visible; in this case the safety filter must not be replaced - the green spot is not visible; in this case the safety filter must be replaced.

 Unscrew vacuum indicator (6) and withdraw safety filter element (7).

 Install the new safety filter element and a cleaned or a new main filter element.