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Installing
Release 3.3 167
Rack Mounting
To rack mount the 3300 In-Line Power Unit:
1. Place the 3300 In-Line Power Unit right side up on a hard flat surface, with the front facing
towards you.
2. Locate a mounting bracket over the mounting holes on one side of the 3300 In-Line Power
Unit.
3. Insert the three screws and tighten with a suitable screwdriver. Note: You must use the
screws supplied with the mounting brackets. Damage caused to the unit by using incorrect
screws invalidates your warranty.
4. Repeat steps 2 and 3 for the other side of the 3300 In-Line Power Unit.
5. Insert the 3300 In-Line Power Unit into the 19-inch rack and secure it to the rack with
suitable screws (not provided). Ensure that ventilation holes are not obstructed.
Shelf Mounting
When shelf mounting the 3300 In-Line Power Unit, the self-adhesive rubber feet provided in
the kit should be placed on the underside of the 3300 In-Line Power Unit. Be sure to place the
rubber feet on the provided 90° angle marking in order to assure stable placement.
Do not place more than four 3300 In-Line Power Units on top of one another if the units are
shelf mounted.
Powering Up
CAUTION: The 3300 In-Line Power Unit has no ON/OFF switch. To connect or disconnect
power to the Unit, simply insert or remove the power cable from the AC power receptacle
on the rear of the Unit.
To power up the 3300 In-Line Power Unit:
1. Insert a power cord into the power socket on the rear of the 3300 In-Line Power Unit.
2. Insert the other end of the power cord into the power receptacle.
The 3300 In-Line Power Unit powers-up and the internal fans begin operating.
Power-Up LED Sequence
The 3300 In-Line Power Unit then runs through its Power On Self Test (POST), which takes
less than 10 seconds. During the POST, all ports on the 3300 In-Line Power Unit are disabled
and the LEDs light up in the following sequence:
1. The "AC" and "Alarm" LEDs light up.
2. After approximately 2 seconds, all "Power Active" and "Power Not Active" LEDs light up.