14
Version 10.08.2011
Filter replacement indication
The first few filter changes should only apply to the pre-filter. The indication that the
HEPA portion of the combined filter is blocked and that the filter needs replacing is
when the green amber and red LED’s do not go off after the pre filter has been
changed.
If the VOC monitor option is fitted, the requirement for a combined filter change is
indicated by illumination of the Gas filter alarm light on the front panel.
Please note
that the carbon media within the combined filter is hygroscopic and will
absorb moisture from the atmosphere. This is why these filters should be changed
every twelve months regardless.
Pre filter replacement
1. Isolate the electrical supply to the unit.
2. Undo the latches on either side of the unit and lift the motor section off.
3. Remove the filters from the base.
4. Vacuum out any dust in the base.
5. Remove the pre filter from inside the combined filter and replace with a new
pre filter.
6. Locate the combined filter into the base.
7. Replace the motor section and fasten the latches.
8. Reconnect the power supply.
Fig 12
PRE FILTER
COMBINED FILTER
