Mechanical Safety

Hoisting Devices

• Do not walk under hoisted objects.
• Only trained and qualified personnel should perform hoisting operations.
• Check that hoisting tools are available and in good condition.
• Before hoisting objects, ensure that hoisting tools are firmly secured onto a load-bearing object or wall.
• Ensure that the angle formed by two hoisting cables is no more than 90 degrees, as shown in the following figure.

• Do not drag steel ropes and hoisting tools or bump hoisted objects against hard objects during hoisting.

Using Ladders

• Use wooden or fiberglass ladders when you need to perform live working at heights.
• When a step ladder is used, ensure that the pull ropes are secured and the ladder is held firm.
• Before using a ladder, check that it is intact and confirm its load bearing capacity. Do not overload it.
• Ensure that the ladder is securely positioned. The recommended angle for a ladder against the floor is 75 degrees, as shown in the following figure. An angle rule can be used to measure the angle. Ensure that the wider end of the ladder is at the bottom, or protective measures have been taken at the bottom to prevent the ladder from sliding.

• When climbing a ladder, take the following precautions to reduce risks and ensure safety:
  • Keep your body steady.
  • Do not climb higher than the fourth rung of the ladder from the top.
  • Ensure that your body's center of gravity does not shift outside the legs of the ladder.

Drilling Holes

When drilling holes into a wall or floor, observe the following safety precautions:

Do not drill holes into the equipment. Doing so may affect the electromagnetic shielding of the equipment and damage components or cables inside. Metal shavings from drilling may short-circuit boards inside the equipment.

• Obtain the consent from the customer and subcontractor before drilling.
• Wear goggles and protective gloves when drilling holes.
• When drilling holes, protect the equipment from shavings. After drilling, clean up any shavings that have accumulated inside or outside the equipment.

Moving Heavy Objects

When removing a heavy or unstable component from a cabinet, be aware of unstable or heavy objects on the cabinet.

• Be cautious to avoid injury when moving heavy objects.

• When moving the equipment by hand, wear protective gloves to prevent injuries.
• Move or lift the equipment by holding its handles or lower edges. Do not hold the handles of modules (such as power supply units, fans, and boards) that are installed in the equipment because they cannot support the weight of the equipment.
• Avoid scratching the cabinet surface or damaging cabinet components and cables during equipment transportation.
• When transporting the equipment using a forklift truck, ensure that the forks are properly positioned to ensure that the equipment does not topple. Before moving the equipment, secure it to the forklift truck using ropes. When moving the equipment, assign dedicated personnel to take care of it.
• Choose railways, sea, or a road with good condition for transportation to ensure equipment safety. Avoid tilt or jolt during transportation.
• Move a cabinet with caution. Any bumping or falling may damage the equipment.