Doosan D80 - Page 26

Operating & Maintenance Manual NOISE EMISSION
24 Book: 46551819 (2-11-2011) Rev B
A. Compressed Air Leaks
Correct all compressed air leaks during the first shutdown period after discovery. If severe
enough to cause serious noise problems and efficiency loss, shut down immediately and
correct the leak(s).
B. Safety and Control Systems
Repair or replace all safety and control systems or circuits as malfunction occurs. No
compressor should be operated with either system bypassed, disabled, or nonfunctional.
C. Acoustic Materials
In daily inspections, observe these materials. Maintain all acoustic material as nearly as
possible in its original condition. Repair or replace all sections that have: 1) sustained damage,
2) have partially separated from panels to which they were attached, 3) are missing, or have
otherwise deteriorated due to severe operating or storage conditions.
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 also 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
insure 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.
Maintenance Schedule
Item Area Period
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
Compressed Air Leaks
Safety and Control Systems
Acoustic Materials
Fasteners
Enclosure Panels
Air Intake & Engine Exhaust
Cooling Systems
Isolation Mounts
Engine Operation
Fuels & Lubricants
As Detected
As Detected
Daily
100 hours
100 hours
100 hours
250 hours
250 hours
See Operator’s Manual
See Operator’s Manual