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3055 Del Sol Blvd., San Diego, CA 92154 USA
Rev. B
Date: 3/02/11
SC120PW Series
- 1 -
SC120PW Model Series
INSTALLATION MANUAL
This manual contains important information regarding the proper installation and operation of the
power supply inside the host equipment.
GENERAL SAFETY INSTRUCTIONS
This power supply is designed for use within other equipment or enclosures. For safe installation and
operation of this product, carefully follow the instructions below:
1. Do not install, test or operate this product near water, and do not spill any liquid on it.
2. Do not operate this product unless it is in a secure position.
3. This product must be installed in a restricted access location accessible to authorized
competent personnel only.
4. This product must be reliably earthed and professionally installed in accordance with the
prevailing electrical wiring regulations and safety standards.
5. After disconnecting the AC source, allow 5 minutes before touching the unit to allow
capacitors within the unit to discharge.
6. Heat sinks within this power supply are live and must not be touched when the unit is in
operation.
7. All four 3.5 mm diameter mounting holes at the corners of the unit must be used to secure the
power supply. To conform to EMI specifications, solder pads located around the mounting
holes on the underside of the pcb must make electrical connection with the chassis. Washers
and other mounting hardware must not exceed 6mm in diameter.
8. A minimum of 4.2mm creepage and 3.8mm clearance must be maintained between the power
supply and the equipment chassis. If the mounting spacer height is less than 8mm, basic
insulation must be provided between the power supply and the equipment chassis.
9. The output power taken from the power supply must not exceed the rating stated on the power
supply label. For convection cooling, ensure that adequate ventilation is provided to allow air
to circulate naturally.
10. All servicing, repair and testing of this product must be carried out by competent personnel
who are fully conversant with the hazards of AC line operated equipment and with the
particular dangers associated with switch mode power supplies.
11. Dangerous voltages are present within the power supply. Power must be disconnected before
servicing.
FUSING
An internal T3.15A, 250V, time lag, HBC fuse is provided. For continued protection against risk of
fire, replace only with same type and rating as that fitted.
Caution: Changing the fuse is to be performed by qualified service personnel only.
SAFETY AGENCY APPROVALS
The CE Marking, when applied to the product, indicates conformance to the requirements outlined in
the European Union's Low Voltage Directive (72/23/EEC) as amended by the CE Marking directive
(93/68/EEC) in that the product complies with EN60950-1.
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