User's Manual

3 Safety Information
Compliance and Safety Manual
3-14
Huawei Technologies Proprietary
Issue (2011-06-25)
Climbing the Ladder
When climbing the ladder, note the following.

Ensure the gravity center of your body does not deviate from the ladder edge.

To lessen the danger and ensure the safety, hold your balance on the ladder before any
operation.

Do not climb higher than the forth highest step of the ladder.

If you are about to climb to the top, the length of the ladder shall be one meter higher
than the eave.
3.6 Mechanical Safety
3.6.1 Drilling
WARNING
Drilling on the rack without permission is strictly prohibited. Drilling that does not satisfy the
requirements concerned may damage the wires and cables inside the rack. If the metal
shavings from the drilling fall into the rack, it may result in short circuit of the circuit boards.

Before drilling a hole on the rack, wear insulation gloves, and remove the cables inside
the rack.

During the drilling, ensure that your eyes are well protected. The hot shavings may
injury to your eyes.

Ensure that the metal shavings do not get into the rack.

Non-standard drilling may damage the electromagnetic shielding performance of the
rack.

After drilling, clean the metal shavings in time.
3.6.2 Sharp Objects
WARNING
When carrying the device by hand, wear protection gloves to avoid injury by sharp objects.
3.6.3 Handling Fans
Ensure the following:

When replacing a component, place the component, screw, and tool at a safe place to
prevent them from falling into the running fan.