Huawei pRRU3901 - Lifting Heavy Objects; Miscellaneous; Inserting and Removing a Board; Bundling Signal Cables

pRRU3901Compliance and Safety Manual
Contents
Issue 01 (2012-02-22)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
2-17
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When replacing the ambient equipment around the fan, do not place the finger or board
into the running fan until the fan is switched off and stops running.
2.7.4 Lifting Heavy Objects
WARNING
When lifting heavy objects, do not stand or walk under the arm or the lifted object.
2.8 Miscellaneous
2.8.1 Inserting and Removing a Board
To insert or remove a board, abide by the following requirements:
CAUTION
When inserting a board, handle it gently to avoid distorting pins on the backplane.

Insert the board along the slot guide.
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The two sides of one board should not contact another board to avoid short-circuit or
scratch.

When holding a board in hand, do not touch the board circuit, components, connectors,
or connection slots.
2.8.2 Bundling Signal Cables
CAUTION

Bundle the signal cables separately from the strong current cables or high voltage cables.

Maintain a minimum space of 150 mm between adjacent ties.
2.8.3 Cabling Requirements
At a very low temperature, movement of the cable may damage the plastic skin of the cable.
To ensure the construction safety, comply with the following requirements:

When installing cables, ensure that the environment temperature is above 0°C.

If cables are stored in the place below 0°C, move the cables into a place at a room
temperature and store the cables for more than 24 hours before installation.