Mounting the scs 300, Ul requirements for rack mounted devices, Mounting the scs 300 on a rack shelf – Extron Electronics SCS 300 User Guide User Manual
Page 9: Installation, connection, and settings, Mounting the scs 300 on a rack shelf helf

Installation, Connection, and Settings
SCS 300 • Installation, Connection, and Settings
2-2
Mounting the SCS 300
the SCS 300
The SCS 300 can be mounted on a 1U rack shelf, under or
through a desk, or attached to the projector pole.
UL requirements for rack mounted devices
nted devices
The following Underwriters Laboratories (UL) requirements
pertain to the safe installation of the SCS 300 in a rack.
1
.
Elevated operating ambient temperature
— If installed in
a closed or multi-unit rack assembly, the operating ambient
temperature of the rack environment may be greater than
room ambient temperature. Therefore, install the SCS in
an environment compatible with the maximum ambient
temperature (Tma = +122 °F, +50 °C) specified by Extron.
2
.
Reduced air flow
— Install the equipment in a rack so that
the amount of air flow required for safe operation of the
equipment is not compromised.
3
.
Mechanical loading
— Mount the equipment in the rack
so that a hazardous condition is not achieved due to
uneven mechanical loading.
4
.
Circuit overloading
— Connect the equipment to
the supply circuit and consider the effect that circuit
overloading might have on overcurrent protection and
supply wiring. Appropriate consideration of equipment
nameplate ratings should be used when addressing this
concern.
5
.
Reliable earthing (grounding)
— Maintain reliable
grounding of rack-mounted equipment. Pay particular
attention to supply connections other than direct
connections to the branch circuit (e.g. use of power strips).
Mounting the SCS 300 on a rack shelf
helf
For optional rack mounting, mount the SCS 300 on a standard
9.5" deep Universal or Basic rack shelf (Extron part #60-190-01,
RSU 129,
or #60-604-01, RSB 129) (figure 2-1), or on a 6" deep
Universal or Basic rack shelf (Extron part #60-190-10, RSU 126,
or #60-604-10, RSB 126) (figure 2-2). On the standard 9.5" deep
rack shelf, the SCS 300 can be mounted in one of four locations
at the rear of the rack or the front of the rack shelf:
1
.
If the SCS 300 has feet installed, remove them.
2
.
Align the SCS 300 over the shelf so that the two threaded
holes in the base line up with two holes in the shelf.
3
.
Use two 4-40 x 3/16" screws to mount the SCS 300 to the
shelf.