Noise Emission Operation & Maintenance Manual D. Fasteners All fasteners such as hinges, nuts, bolts, clamps, screws, rivets, and latches should be inspected for looseness after each 100 hours of operation. They should be retightened, repaired, or if missing, replaced immediately to prevent subsequent damage and noise emission increase. E. Enclosure Panels Enclosure panels should be inspected at 100 hour operational intervals. All panels that are warped, punctured, torn, or otherwise deformed, such that their noise containment function is reduced, should be repaired or replaced before the next operation interval.
Doors, access panels, and hatch closures especially, should be checked and adjusted at this time to ensure continuous seating between gasket or acoustic material and the mating frame. F. Air Intake and Engine Exhaust Engine and compressor air intake and engine exhaust systems should be inspected after each 100 hours of operation for loose, damaged, or deteriorated components. Repairs or replacements should be made before the next period of use. G. Cooling Systems All components of the cooling system for engine water and compressor oil should be inspected every 250 hours of use. Any discrepancies found should be corrected before placing the compressor back in operation.
Unrestricted airflow over the radiator and oil cooler must be maintained at all times during operation. H. Isolation Mounts Engine/airend isolation mounts should be inspected after each 250 hours of operation. Those mounts with cracks or splits in the molded rubber or with bent or broken bolts due to operation or storage in severe environments should be replaced with equivalent parts. I. Engine Operation Inspect and maintain engine condition and operation as recommended in the manuals supplied by the engine manufacturer. J. Fuels and Lubricants Use only the types and grades of fuels and lubricants recommended in the Operator and Maintenance Manual and Engine Manual. 33