Installation
6-1
Revision 0.1 – 3 June 1999
FP12 DIMMER
USER MANUAL
6.0
Installation
The FP12 dimmer is designed for use in 19 inch racks or a 19 inch bar frame, and
occupies 3 rack units (export models may differ). The dimmer is supplied with rear rack
mounting support brackets, which provide additional support for touring applications.
The three phase power cable entry is located at the rear right side of the rack when
viewed from the front. Ensure adequate access to the power plug when mounting
dimmers in racks.
6.1
Dimmer Ventilation
The FP12 dimmer is fan-cooled, with the air intake at the right and air exhaust at the left
when viewed from the front. All racks must have adequate ventilation for the side-to-side
airflow of the dimmers. Fully enclosed racks will cause overheating problems.
Racks must allow at least 100 square centimetres of air venting per dimmer at each side
of the rack, level with the dimmer’s intake and exhaust slots. Additional venting area will
serve to further reduce internal dimmer temperatures and will enhance the dimmer’s
operational reliability.
Dimmers may be stacked in racks without intervening rack spaces as long as the racks
are adequately vented.
Racks of dimmers must be placed such that one rack does not breathe the hot exhaust of
the rack to its right. Allow at least 0.5m (18") between racks unless duty cycles are light.
Summary of Contents for FP12
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