Clean Air Conditioner Fresh/Recirc Filters - Komatsu ecot3 Operation And Maintenance Manual

MAINTENANCE PROCEDURE

CLEAN AIR CONDITIONER FRESH/RECIRC FILTERS

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.
REMARK
If the filter becomes clogged, the air flow will be reduced, and there will be an abnormal noise from the air conditioner
unit.
Cleaning Recirculated Air Filter
1. Remove wing bolts (1) from the inspection window at the
bottom rear left on the inside of the operator's cab, then take
out the recirculated air filter.
2. Clean the filter with compressed air. If there is oil on the filter,
or if the filter is extremely dirty, wash it in a neutral agent. After
rinsing it in water, dry it thoroughly before using it again.
Replace the filter with a new part every year. If the clogging of
the filter cannot be removed by blowing with air or washing in
water, replace the filter immediately.
The RECIRC filter must be installed facing in the correct
direction. Install it so that the projecting part faces the front
of the machine.
Cleaning Fresh Air Filter
1. Use the starting switch key to open cover (2) at the rear left of
the operator's cab, then open cover (2) by hand and remove
filter (3) inside the cover.
2. Clean the filter with compressed air. If there is oil on the filter,
or if the filter is extremely dirty, wash it in a neutral agent. After
rinsing it in water, dry it thoroughly before using it again.
Replace the filter with a new part every year. If the clogging of
the filter cannot be removed by blowing with air or washing in
water, replace the filter immediately.
3. After cleaning, return filter (3) to its original position and close
the cover. Use the starting switch key to lock the cover. Do not
forget to remove the starting switch key.
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WARNING
MAINTENANCE