Allen&Heath RPS10 - Manual (Page 5)

5
Installation of the RPS10
Free Standing
The RPS10 can be operated as a free standing unit without requiring any special cooling arrangement, but should not be
accidentally or deliberately covered in any way. Always stand the unit on a firm flat surface well away from any soft furnishings.
Rack Mounting
The RPS10 is designed as a 19 inch rack mount unit and will occupy 3U (5.25 inches) of rack space.
An important consideration when rack-mounting the unit is the need for natural convection of air flow over the whole unit.
Good ventilation below the unit, in the floor or back 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 which also relies on good air flow within the rack (i.e. most power amplifiers and other power supplies) should be
given due consideration and some space should be provided between such units and between the RPS10 unit. Forced convection,
by means of a fan-tray, may be desirable in this situation.
Location
As with any power supply that contains a mains voltage transformer, it is preferable to provide a degree of physical isolation of the
unit from other equipment, particularly that which carries low level audio signals, to avoid any possible hum pick-up. For this
reason the unit is provided with a long (3m) 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.
Earthing
Finally, some consideration should be given to the earthing arrangement of the system, at the centre of which is the console and the
RPS10. The console chassis is earthed, to the mains earth, via the power supply. When rack-mounting the RPS10 care should be
taken to avoid any possible “ground loops” in the system which would introduce audible hum to otherwise clean audio signals.
Ground loops may occur where signal processing equipment, patched to the console, has its signal earth commoned to the
equipment chassis. The ground loop is formed if this chassis and the RPS10 chassis are in electrical contact through the fixing rails
they share in the rack. The RPS10 has separate audio 0V and mains earth wiring which is not connected internally.
Replacing Mains Fuse
The AC mains fuse is located on the front of the power supply unit. In the event of a mains surge or under-rated fuse value, the
mains input fuse will rupture. Switch the unit mains “on/off ” switch to the off position, remove the mains lead plug from the
mains supply socket.
Check the fuse and replace if necessary; also check that the AC mains input voltage labelling is correct for the mains supply in
your area before switching the unit on again.
TO AVOID THE RISK OF FIRE REPLACE ONLY WITH THE CORRECT VALUE FUSE, AS
INDICATED ON THE UNIT
In the event of repeated failure of the mains fuse, consult the local dealer from where the unit was purchased.
AC MAINS VOLTAGE FUSE RATING
220/230/240 VAC T 1.6A / 250V
100/110/120 VAC T 3.15A / 250V