OPERATING INSTRUCTIONS RH 40 F

Inspection and servicing

Safety filter element Replacement

Replace the safety filter elements (5, Fig. 3-27:) 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 (4, Fig. 3-28:) as described above.

" Unscrew nut (6, Fig. 3-27:) and withdraw safety filter element (5).

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

Air-intake lines

At regular intervals:

" check intake lines for leaks and hose clamps for tightness;

" replace hoses between filter housing and engine.

During all works on the air-intake system ensure proper sealing to prevent unfiltered air from reaching the engines.

Dust collection

Dust accumulating on the filter-housing bottom is constantly sucked away by the exhaust system during operation.

The non-return valves (7, Fig. 3-29:) in the suction lines prevent engine exhaust gases from being sucked in.

At regular intervals:

" check suction lines for leaks and hose clamps for tightness.