R5910032 /00 Freya318
19.3 Checking the LDM dust filter
Required tools
No tools required.
How to check the LDM dust filters
1. Check the exact location of the LDM dust filter. It is located on the operator side, underneath the LDM and
the elca box.
2. Detach the dust filter from the holder and slide it out.
Image 19–4
3. Check the “air in” side of the dust filter for dust and/or grease.
In case the filter is contaminated with grease wash and dry the dust filter. See cleaning procedure
“Washing and drying the dust filters”, page 319.
In case the filter contains dust but doesn't feel greasy then vacuum clean the dust filter. See procedure
“Vacuum cleaning of the dust filters”, page 318.
Note: Grease on the filter can build up after several months in an environment contaminated
with greasy air. Note that areas where popcorn is consumed are subject to greasy air.
Tip: Take into account that the time needed to dry the dust filters may be 24 hours or more. For
that, it's recommended to have a second set of dust filters which can be used while cleaning the
first set.
4. Place a clean dust filter in the filter holder. Make sure the filter is fully inserted and respect the airflow of
the filter, which should be pointed inwards.
Caution: UNDER NO CIRCUMSTANCES SHOULD WET FILTERS BE INSTALLED BACK
INTO THE PROJECTOR. THIS CAN HAVE SERIOUS SAFETY CONSEQUENCES AS WELL
AS JEOPARDIZE THE INTERNAL OPTICS OF THE SYSTEM.
19.4 Vacuum cleaning of the dust filters
When to vacuum clean the dust filters?
The dust filters should be checked every month. If the filters are contaminated with dust then cleaning the
filters with a vacuum cleaner should be sufficient. In case the filters feel greasy these must be washed. See
cleaning procedure “Washing and drying the dust filters”, page 319.
Grease on the filter can build up after several months in an environment contaminated with greasy
air. Note that areas where popcorn is consumed are subject to greasy air.
This procedure assumes that the dust filters are removed from their slots.
Maintenance procedures
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