Heavy equipment.
Can cause death or serious
personal injury.
Exercise extreme care when
handling the motor control cen-
ter. Handle upright only. Do not
tilt. A crane or hoist should be
used if at all possible. Exercise
all safety precautions outlined
in the following discussion.
The following precautions should be taken when moving an
MCC with a crane or hoist:
1. Select rigging lengths to compensate for any unequal
weight distribution and to maintain the motor control
center in an upright position.
2. Do not allow the angle between the lifting cables and
vertical to exceed 45° as shown in
Fig. 1
.
3. Do not pass ropes or cables through lifting brackets. Use
only slings with safety hooks or shackles.
4. Never lift an MCC above an area where personnel are
located.
Note:
The height of the lift point above the lift angle should
be at least one half .A,. the distance between lift
holes. This assures a safe angle of 45 degrees or less.
The following precautions should be taken when moving an
MCC with a forklift:
1. Make sure the load is properly balanced on the forks.
2. Place protective material between the MCC and forklift to
prevent bending and scratching.
3. Securely strap the MCC to the forklift to prevent shifting or tipping.
4. Excessive speeds and sudden starts, stops, and turns must be avoided
when handling the MCC.
5. Lift the MCC only high enough to clear obstructions on the floor.
6. Take care to avoid collisions with structures, other equipment,
or personnel when moving the MCC.
7. Never lift an MCC above an area where personnel are located.
The following precautions should be taken when moving an MCC by roll-
ing on pipes:
1. Use enough people and restraining devices to prevent tipping.
2. The surface over which the MCC is rolled must be level, clean and free
of obstructions.
NEVER ROLL AN MCC ON AN INCLINED SURFACE.
3. It should be recognized that rolling an MCC is especially hazardous to
fingers, hands, and feet and is susceptible to tipping. Measures should
be taken to eliminate these hazards.
4. All pipes must be the same outside diameter and should have no flat
spots. Only steel pipe should be used for this purpose.
Figure 2
-
Proper method for lifting a motor control center.
Figure 3
-
Load rated safety hook and shackle.
Figure 4
-
Motor Control Center, roller, and forklift handling.
Siemens Energy & Automation, Inc.
7
