Extron Electronics PS 124 - Manual (Page 15)

PS 124 12 VDC, 4 Amp Power Supply • Installation Manual 9
Installing the PS 124
There are several optional accessories for mounting the PS 124.
They include the following Extron part numbers:
• RSU 129 1U 9.5" Deep Universal Rack Shelf
(part #60-190-01)
• RSB 129 1U 9.5" Deep Basic Rack Shelf
(part #60-604-01)
• MBU 125 1U Under-Desk Mounting
(part #70-077-01)
• PMK 350 Low Profile Pole Mount Kit for Multiple Products
(part #70-563-03)
Additional mounting options may be found on the Extron
website at www.extron.com
UL rack mounting guidelines
The following Underwriters Laboratories (UL) guidelines
pertain to the installation of the PS 124 into a rack.
•
Elevated operating ambient temperature — If the
equipment is installed in a closed or multiunit rack
assembly, the operating ambient temperature of the
rack environment may be greater than room ambient
temperature.
Therefore, consider installing the equipment in an
environment compatible with the maximum ambient
temperature (Tma) specified by the manufacturer. For the
PS 124, the Tma is 122 °F (50 °C).
• Reduced air flow — Installation of the equipment in a rack
should be such that the amount of air flow required for
safe operation of the equipment is not compromised.
• Mechanical loading — Mounting of the equipment in
the rack should be such that a hazardous condition is not
created due to uneven mechanical loading.
• Circuit overloading — Consideration should be given to
the connection of the equipment to the supply circuit and
the effect that overloading of the circuits might have on
overcurrent protection and supply wiring. Appropriate
consideration of equipment nameplate ratings should be
used when addressing this concern.
• Reliable earthing (grounding) — Reliable earthing
of rack-mounted equipment should be maintained.
Particular attention should be given to supply connections
other than direct connections to the branch circuit (e.g. use
of power strips.