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The air filters can be removed by the steps described below. In order to remount them later, check
on the top and bottom of the front grill and the mounting position of the air filters as you remove
them.
1. Loosen the screws at the four corners of the front grill with a plus screwdriver (No. 2). The
screws are attached with retaining washers behind. Turn and loosen the screw carefully until the
corner comes free from the body.
Front grill 1L
2. Remove an air filter from each front grill. Be careful with the small claws on the front grill that
hold the air filters.
3. Rinse the removed air filters with water to remove dirt and clog. Dry them completely.
4. Remount them in reverse order of steps 1 to 2.
WARNING
While removing the air filters and the front grill, do not supply the power from the distribution
board. Otherwise, an electric shock might occur.
DP420LS/DP480LS
Front grill BL
Claw
Remove a filter with careful
attention to the claws.
10.2 Daily Maintenance
In case that a retaining washer behind
comes free from the screw, push it
with a nut driver and attach it to the
screw as shown above.
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