SoundCraft CPS2000 - Manual (Page 12)

Recommendations for Installation
The CPS2000 power supply is provided with front panel fixing holes for 19"
rack-mounting and will occupy 4U of rack space. Rear support should be provided
when fitted in a 19" rack.
The CPS2000 is a heavy unit (30kg,) and should be
regarded as a two-man lift. Take suitable precautions
when lifting
As with any power supply that contains a large mains-voltage transformer, it is
preferable to provide a degree of physical isolation of the unit from other electronic
equipment, particularly that which carries low level audio signals, to avoid any
possible hum pick-up. For this reason the unit is used with a long (6.5 metres) output
cable to enable it to be positioned away from the mixing console.
For the same reason, when rack-mounting it is preferable to avoid locating the unit
adjacent to signal processing equipment.
It should be noted that if a complete rack containing a CPS2000 unit is to be operated
from a different mains supply level, then the unit should be withdrawn from the rack
in order to reselect the mains voltage setting, at the same time as resetting any other
equipment.
The other important consideration when rack-mounting the unit is the need for natural
convection of air over the case and an unrestricted air flow through the unit. Note that
air is drawn in at the front of the unit and expelled through the rear panel.
Good ventilation BELOW the unit, in the floor or back of the rack, and similarly
ABOVE the unit, at the top of the rack, will ensure a path for continuous air flow.
Other equipment in the rack which is known NOT to produce a significant amount of
heat should be mounted BELOW the unit. Equipment that also relies on good air flow
within the rack (ie. most power amplifiers and other power supplies) should be given
due consideration and some space should be provided between such units and between
these and the CPS2000 unit. Forced convection, by means of a fan-tray, may be
desirable in this situation.
The CPS2000 will operate as a free-standing unit
without requiring any special cooling arrangement,
bu t sh ou ld not be allowed to be accidentally or
deliberately covered over in any way.
Do not operate the unit with the top cover removed as
this exposes hazardous voltages.
The filters on the cooling fans must be inspected
regularly and cleaned if necessary to maintain good
airflow through the unit. This will be particularly
important if the unit is used in a dusty environment.
8 Installation