Xpelair XID Centrifugal metal inline fans - CMS

Dimensions
Controllers
and Accessories
Auto Changeover Switches
ACO-1 automatic duty sharing controller with
auto changeover on fan failure
Provides automatic timed change of the ‘duty’ and
‘standby’ fans every 12 hours. Automatic changeover
also occurs when one of the fans fails.
The changeover panel incorporates a ‘power on’
indicator, and ‘run’ and ‘fail’ lights indicating fan
operational status.
When the ACO is switched on, ‘Fan 1’ operates and
the light sequence is:
Red power light ON
Fan 1 green ‘run’ light ON
Fan 1 red ‘fail’ light OFF
Fan 2 green ‘run’ light OFF
Fan 2 red ‘fail’ light OFF
When ‘Fan 2’ is automatically selected, the ‘Fan 1’
green ‘run’ light is OFF and the ‘Fan 2’ green ‘run’
light is ON.
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When the automatic changeover panel switches to
‘Fan 2’ due to ‘Fan 1’ failure, the light sequence is:
Red power light ON
Fan 1 green ‘run’ light ON
Fan 1 red ‘fail’ light ON
Fan 2 green ‘run’ light ON
Fan 2 red ‘fail’ light OFF
When ‘Fan 1’ is operational due to ‘Fan 2’ failure,
the ‘Fan 1’ red ‘fail’ light is OFF and the ‘Fan 2’ red
‘fail’ light is ON.
Fan ‘failure’ is via a very reliable airflow sensing flow
switch device within the case. This gives automatic
changeover and fan status indication on the
control panel.
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