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Planning the proper location and layout of your equipment rack or wiring closet is essential for successful system operation. Equipment placed in an inadequately ventilated area can cause system overtemperature conditions. In addition, poor equipment placement can make chassis panels inaccessible and difficult
to maintain.
Before installing the chassis, make sure you have on hand all the additional external equipment and cables. Consider these factors related to each type of interface when preparing your site for network connections to the chassis:
You need the following tools and equipment to install the chassis:
The following items are included in the accessory kit that ships with your chassis:
To install the chassis in a rack, follow these steps:
a. Use a tape measure to measure the depth of the rack. Measure from the outside of the front mounting posts to the outside of the rear mounting strip. The depth must be at least 19.25 inches (48.9 cm) but not greater than 32 inches (81.3 cm).
b. Measure the space between the inner edges of the left front and right front mounting posts to ensure that it is 17.75 inches (45.09 cm) wide. (The chassis is 17.25 inches [43.8 cm] wide and must fit between the mounting posts.)
c. Remove the rubber feet from the chassis, if needed, to ensure a better fit in the rack. Place the side of the chassis on a flat surface. Remove the screw that secures each rubber foot to the chassis.
d. Place the chassis on the floor or on a sturdy table as close as possible to the rack. Leave enough clearance so that you can move around the chassis.
e. Open the rack-mount kit.
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Caution If the rack is on wheels, ensure that the brakes are engaged or that the rack is otherwise stabilized. |
Step 2 Install the shelf brackets as follows:
a. Position the shelf brackets in the rack. (See Figure 2-1 .)
b. Secure the shelf brackets by using 12 (three per side, front and back) 12-24 or 10-32 screws.
c. Attach the crossbar bracket to the back of the shelf brackets using two of the M3 Phillips pan-head screws provided in the rack-mount kit.
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Note No shelf is required with this assembly; the shelf brackets support the chassis in the rack. |
Step 3 Place the cable guides on the sides of the chassis between the L brackets and the chassis.
Step 4 Secure the cable guides and the L brackets to the chassis using the ten M3 Phillips countersunk-head screws provided in the rack-mount kit. (See Figure 2-2 .)
Step 5 Install the chassis in the rack as follows:
a. Grasp the bottom edge of the chassis with one hand near the front and the other near the back. With one person at each side of the chassis, slowly lift the chassis in unison.
b. Position the chassis in the rack as follows (see Figure 2-3 ):
c. Place the chassis on the shelf brackets.
d. Align the mounting holes in the L bracket with the mounting holes in the equipment rack.
e. Install the ten (five per side) 12-24 or 10-32 screws through the elongated holes in the L bracket and into the threaded holes in the mounting post.
f. Use a tape measure and level to ensure that the chassis is straight and level.
Step 6 Check the release levers to ensure that all modules are installed securely and tighten any loose captive installation screws on all modules.
You need a 1/4-inch flat-blade screwdriver to install a power supply.
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Warning Keep hands and fingers out of the power supply bays. Voltage is present on the chassis backplane when the system is operating. |
To install an AC or DC power supply, follow these steps:
Step 2 Push the power supply into the power supply bay until the faceplate is flush with the cover.
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Note In a nonredundant configuration, install the power supply in the left power supply bay. |
Step 3 Tighten the captive installation screw by turning it clockwise.
For power supply replacement information, see the "Replacing Power Supplies" section.
This section describes the procedures for connecting AC and DC power to the chassis. This section contains the following topics:
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Note Install proper grounding to avoid damage from lightning and power surges. |
To connect power to an AC power supply, follow these steps:
Step 2 Connect the other end of the AC power supply cord to an input line.
Step 3 Plug the power cord into the power cord connection of the redundant power supply.
Step 4 Connect the redundant AC power supply cord to an input line other than the initial power supply line.
Step 5 Turn the power switch of the AC power supply on ( | ).
Step 6 Verify power supply operation by checking the power supply LEDs. See Table 2-1 for LED descriptions.
To connect power to the DC power supply, follow these steps:
Step 2 Ensure that the power switch is off (0) on the power supply.
Step 3 Remove the terminal block cover by removing the two screws at the top and bottom of the terminal block cover. (See Figure 2-6.)
Step 4 Attach the appropriate lugs to the DC-input wires. (See Figure 2-7.)
Step 5 Wire the DC-input conductors from the top of the terminal block as follows:
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Warning When installing the unit, the ground connection must always be made first and disconnected last. |
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Note Use 8 AWG, 90º, copper conductor for the above connections. |
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Note Route the wires from the top of the terminal block so that you do not obstruct access to the chassis power switch. |
Step 6 Reinstall the terminal block cover after ensuring that all wire connections are secure.
Step 7 Connect the redundant power supply to a different DC input line other than the initial power supply line.
Step 8 Turn the power supply power switch on ( | ). (See Figure 2-7.)
Step 9 Verify power supply operation by checking the power supply LEDs. See Table 2-1 for LED descriptions.
The three LEDs on the power supply shown in Figure 2-8 perform the following functions:
Table 2-1 describes the LEDs.
| LED | State | Description |
|---|---|---|
Input OK | Green | Power supply is on and receiving source power. |
Fan OK | Green | Fan assembly is operating properly. |
Output Fail | Red | Output voltage is outside of proper range, |
Posted: Thu Sep 21 13:35:27 PDT 2000
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