483
443
348
132
338
5
323
A1 enclosure dimensions
(4.0 E)
2-7
2.4.
Mainframe installation
P1200A mainframe enclosures are designed to fit a standard 19"
equipment rack or cabinet.
The front panel vent slot serves as a useful handle for lifting and
moving mainframes in and out of racks. The front panel swit ches
are flush-fitted and the level control(s) and mainframe power
switch are recessed to protect them from accidental damage and
unintentional adjustment.
When specifying a rack, be sure to allow extra depth (10 cm is
usually sufficient) to accommodate the cables and connectors at the
rear of the mainframe(s).
When mounting mainframes into a 19" rack cabinet, provide
additional support using shelves fixed to the inner sides of the
cabinet or the mounting holes provided on the mainframe rear-
mounted rack ears - do not just rely on fixing and supporting
mainframes by their front panels. This advice is particularly
important if mainframes are being racked-up for touring use.
Since the P1200A power amplifiers can generate a lot of heat,
please ensure, whatever the mounting or racking arrangement,
that adequate cool airflow is provided to avoid a build-up of hot
air inside the rack leading to overheating. The P1200A air intake is
on the rear panel and the air outlets are set into the front panel.
To maintain good airflow through mainframes we recommend
frequent cleaning of the fan filters. If mainframes are installed in
cabinets so that direct access to the rear panel filters is not
possible, we recommend using additional fan modules with front-
mounted filters which can be easily replaced without opening the
sealed cabinets. We will gladly advise on the choice of suitable fan
modules.
