MAINTENANCE 4.8 EVERY 10 OPERATING HOURS OR DAILY
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4.8.2 AIR CLEANER - CLEAN PRE-CLEANER
Clean dust cups of pre-cleaners
Legend for illust. Z 21770:
1. Provide suitable container for collecting the dust before open-
ing the dust cups (4).
2. Loosen the clamps and swing down dust cups (4).
3. Remove dust from pre-cleaner dust cups.
4. Check condition of the dust cup gaskets and replace if neces-
sary.
5. Swing back dust cups (4) to closed position and secure with
the clamps provided.
6. Check air cleaner mounting parts for tight fit and security.
OTICE
When operating the machine under very dusty conditions,
check pre-cleaner jet tubes (5) for plugging. Dust plugging of
tubes can be removed with a stiff fiber brush.
Never clean tubes with compressed air unless both the pri-
mary and safety elements are installed in the air cleaner. Do
not steam-cleam tubes.
(1) Roof mounted air cleaner units
(2) Air intake screen
(3) Clamps
(4) Dust cups
(5) Jet tubes
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