11
Version 1 Oct 2009
OPERATION
Manual operation
Stainless steel
AD units are turned on by depressing the green button on the front of
the extractor and turned off by depressing the red button. See fig 8. Powder coated
AD units are turned on and off by means of a green, illuminated rocker switch on the
front of the unit. (See Fig 9).
Fig 8 Stainless Steel Units Fig 9 Powder coated Units
Filter condition and System failure signal - indicators
The
LED’s on the front panel (see table and fig 10 below) indicate the following
conditions
LED’S
SHOWING
INDICATES
Green Only
Unit is running - Filters are usable
Green & Amber
Pre or Combined Filter 75%
blocked
Green, Amber & Red
Pre or Combined Filter Blocked
and in need of replacing
Green, Amber & Red flashing
Fault with extractor.
This condition may occur for a few
seconds on start up
Red Alarm Light
Only used with optional extra Gas
Filter Change LED
Filter change procedures are explained in Section 5 ‘Maintenance’.
Note:
In order to help
ensure long term reliability
of the fan unit, it is
recommended that a 90
second delay period
(minimum) is observed
between stopping and
restarting the extractor to
prevent possible damage
to electronic components
within the fan.
