v Unplug all cords and cables from the enclosure.
v Remove all DDIC modules from both drawers and make sure the drawers are closed firmly and locked
shut. See "Locking drawers."
Use a minimum of three people to lift the enclosure.
CAUTION:
A fully configured enclosure weighs up to 135kg (298lb). An unpopulated enclosure weighs 46kg
(101lb). Use appropriate lifting methods. The packaging includes lifting straps wrapped and buckled
around the enclosure. Ensure the lifting straps buckle is properly closed, and lift with the loops
attached to the lifting straps.
Do not lift the enclosure by the handles on the power supply units, cooling modules, or I/O modules.
They are not designed to take the weight.
Do not lift the enclosure higher than 20U (35 in.). Use mechanical assistance to lift above this height.
Operation
Important: All rear modules are part of the fire enclosure and must only be removed when a
replacement can be immediately inserted.
Important: The enclosure does not receive sufficient airflow or cooling if it is operated with any of the
rear modules missing. It is essential that every module bay be filled either with a module or a blank
module. Each row of drive bays must be completely empty or completely full.
Replace any defective modules with fully operational units as soon as possible. Do not remove cooling
modules, PSUs, or I/O modules unless you have a replacement model of the correct type ready for
insertion. For replacement procedures, see Chapter 6, “Module replacement,” on page 37.
CAUTION:
To prevent overturning, drawer interlocks stop users from opening both drawers at the same time. Do
not attempt to force open a drawer when the other drawer in the enclosure is already open. In a rack
containing more than one enclosure, do not open more than one drawer per rack at a time.
CAUTION:
Operating temperatures inside the enclosure drawers can reach up to 60°C. Take care when opening
drawers and removing drive carriers.
Figure 2. Module bay caution label
Chapter 1. Appliance safety precautions 3
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