Calrec SUMMA, Installation Manual

Page: 43 / 96

CALREC
Putting Sound in the Picture
43
SIDE PROFILE VIEW - DIMENSIONS & AIR FLOW
SIDE PROFILE VIEW - DIMENSIONS WITH REAR SUPPORTS FITTED
OVERHEAD VIEW
478.50mm [18.84’]
4U
177.00mm
[6.97’]
• Air drawn in through front panel inlets. Air exits via top rear mounted fans
Long support position 645.64mm [25.42’]
Short support position 591.64mm [23.29’]
Depth excluding rear supports
478.50mm [18.84’]
4
31
.8
0
m
m [
17
.0
0
’]
4
82.
8
0
m
m [
19
’]
62mm
[2.44’]
Airflow
The core is cooled by fan assisted
convection. Air is drawn in through inlets
on the front panels of the cards fitted in
the core. Air exits via 9 fans mounted
to the rear of the core, across the top.
The speed of each fan is monitored and
system status error reports are generated
for any failures. Air inlets and fans should
be left clear and unobstructed to ensure
air can flow through the card frame.
No clearance is required above or below
the core for cooling.
Support
The weight at the rear of the core should
be adequately supported to prevent
stress on the front racking angles. This is
particularly important when the units are
mounted in mobile installations. Calrec
will not accept liability for damage caused
by insufficient support..
The rear of the core can be supported by
side angles which are commonly available
from equipment bay suppliers for such
a purpose, or by the use of rear support
rails.
Calrec supply adjustable rear support
rails with each Summa core that can be
fitted during installation if required. The
support rails can be fitted in two different
positions depending on the depth of the
bay being used. Rear racking angles slide
over the support rails so the depth can be
adjusted to match the position of the rear
core fixings in the equipment bay.
Adjustable rear core fixing