Installing and Connecting a Redundant Power System
Enterasys A4 Fast Ethernet Switch Hardware Installation Guide 2-13
Removing an Installed STK-RPS-150PS
To remove a power supply installed in an operating system, proceed as follows:
1. Unplug the AC power cord of the power supply from the AC power source first, then from the
rear of the power supply.
2. Loosen the captive screws securing the power supply until it is released from the chassis front
panel.
3. Pull the power supply
out and remove it from the chassis.
4. Repeat steps 1 through 3 for each additional power supply you plan to remove.
5. Optionally, reinstall coverplates over empty slots. Coverplates are not required.
Installing the Shelf into the Rack
To install an STK-RPS-150CH2 or STK-RPS-150CH8 into a 19-inch (48.3-cm) rack, you need the
following:
• For the STK-RPS-150CH2: four customer-supplied screws to fasten the shelf to the rack rails
• For the STK-RPS-150CH8: ten customer-supplied screws to fasten the shelf to the rack rails
After installing the power supplies as described in “Installing an STK-RPS-150PS Into a Shelf” on
page 2-11, rack mount the chassis as follows:
1. Refer to the installation guidelines (“Guidelines for Rackmount Installation” on page 2-13).
2. Install the chassis into the rack (“Rack Mounting the Chassis” on page 2-14).
3. Connect the RPS cables and AC power cords of the power supplies (“Connecting the RPS
Cable and AC Power Cord” on page 2-15).
Guidelines for Rackmount Installation
The installation site must be within reach of the network cabling and meet the requirements listed
below:
• Shelf placement must be close enough to connect the 2-meter (6.6-foot) AC power cords from
the power supplies to the AC power source.
• Up to two three-pronged power receptacles capable of delivering the current and voltage
specified in “STK-RPS-150PS Specifications” on page A-4. Up to two AC outlets on
independently-fused circuits must be within 182 centimeters (6 feet) from the installation site.
If there is an AC power source failure, this will prevent the powering down of PSMs due to a
single source power failure.
• Power cords and type of outlet are dependent on the country. In the United States, one power
cord with an NEMA 5-15P plug is provided with each STK-RPS-150PS.
• An ambient temperature of between 0°C (32°F) and 50°C (122°F) must be maintained at the
installation site with fluctuations of less than 10°C (18°F) per hour.
Caution: Observe all Electrostatic Discharge (ESD) precautions when handling sensitive electronic
equipment.
Precaución: Al trabajar con equipos electrónicos sensibles, tome todas las precauciones de
seguridad para evitar descargas de electricidad estática.
Caution: To ensure proper ventilation and prevent overheating, leave a minimum clearance space
of 10.16 cm (4.0 in.) at the front and rear of the
A4 chassis.
Precaución: Para asegurar una buena ventilación y evitar que el sistema se sobrecaliente, deje un
espacio mínimo de 10.16 cm (4 pulgadas.) con respecto a la parte delantera y trasera del chasis
A4.
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