Xpelair XID Centrifugal metal inline fans - CMS

Dimensions
Controllers
and Accessories
Auto Changeover Switches
MAC-M manual duty sharing controller with
auto changeover on fan failure
Allows manual selection of the ‘duty’ and ‘standby’
fans. Automatic changeover 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 ‘Fan 1’ is manually selected, the light
sequence is:
Amber 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 manually selected, the ‘Fan 1’ green
‘run’ light is OFF and the ‘Fan 2’ green ‘run’ light is ON.
When the automatic changeover panel switches to
‘Fan 2’ due to ‘Fan 1’ failure, the light sequence is:
Amber 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
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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.
MAC-M manual duty sharing controller with auto
changeover should be switched from ‘Fan 1’ run to
‘Fan 2’ run on a weekly cycle.
MAC-A automatic duty sharing controller with
auto changeover on fan failure
Operates as MAC-M with the addition of automatic
timed change of the ‘duty’ and ‘standby’ fans every
12 hours.
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Xpelair Flex CMAX Twin XFTA | Attenuated multi-spigot fans with flow switch