Komatsu PC2000-8 BACKHOE, Operation & Maintenance Manual

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MAINTENANCE
MAINTENANCE PROCEDURE
4-77
CLEAN AIR CONDITIONER FRESH/RECIRC FILTERS 4
WARNING
If compressed air scattered around dust and debris, there is danger of injury. Always wear protective
equipment such as protective glasses and mask.
NOTICE
As a guideline, the filters should be cleaned every 500 hours, but on dusty jobsites, clean the filters more
frequently.
Cleaning Recirculated Air Filter
1. Loosen 2 lock screws (2) for box cover (1) behind the
assistant's seat, then open box cover (1). Recirculated air
filter (3) is inserted at the rear of box cover (1).
2. Pull out recirculated air filter (3) to the front.
3. Clean the recirculated air filter (3) with compressed air. If
there is any oil stuck to the filter, or it is extremely dirty,
wash the filter in a neutral detergent. After washing, dry it
thoroughly before using it again. If it is impossible to
remove the clogging from the filter with compressed air or
by washing, replace the filter with a new part.
REMARK
If the filter becomes clogged, the air flow will be reduced, and
there will be an abnormal noise from the air conditioner unit.