2 Receiving And Handling
2.1 Receiving
Upon receipt of the motor control center, an immediate inspec-
tion should be made for any damage which may have occurred
during shipment. The inspection should begin with the packag-
ing material and proceed to the equipment within. Be sure to
look for concealed damage and do not discard the packing mate-
rial. If damage is found, note damage on .Bill of Lading. prior
to accepting receipt of the shipment, if possible.
Note:
The way visible shipping damage is treated by the con-
signee prior to signing the delivery receipt can determine the
outcome of the damage claim to be filed. Notification to the car-
rier within the 15 day limit on concealed damage is essential if
loss resulting from unsettled claims is to be eliminated or mini-
mized.
A claim should be immediately filed with the carrier, and the
Siemens sales office should be notified if damage or loss is dis-
covered. A description of the damage and as much identification
information as possible should accompany the claim.
Heavy equipment.
Can cause death or serious
personal injury.
Exercise extreme care when han-
dling the motor control center.
Handle upright only. Do not tilt.
A crane or hoist should be used if at
all possible. Exercise all safety pre-
cautions outlined in the following
discussion.
2.2 Handling
The motor control centers are shipped in groups of one to four
vertical frames which are mounted on wooden shipping skids.
Lifting angles are on each shipping section.
The following precautions must be taken whenever moving
an MCC:
1. Handle the motor control center with care to avoid dam-
age to components and to the frame or its finish.
2. Handle the motor control center in an upright position
only. Motor control centers are normally front heavy and
frequently top heavy. Balance the load carefully and
steady the motor control center, as necessary, while mov-
ing. Some motor control center interiors may contain
heavy equipment, such as transformers mounted within,
that could be adversely affected by tilting.
3. Know the capabilities of the moving means available to
handle the weight of the motor control center. Adequate
handling facilities should be available. The following
table gives the approximate weights of single vertical
frames and will be helpful in determining the required
capacity of the handling means. If a vertical frame con-
tains power factor correction capacitors, reactors, or a
large transformer, sufficient additional weight handling
capacity must be allowed.
Table 1
-
NEMA 1, Gasketed, & 12 Structures Only
Frame
Weight
20" W x 15" D Front Only 550 lb.
20" W x 20" D Front Only 600 lb.
30" W x 15" D Front Only 600 lb.
30" W x 20" D Front Only 650 lb.
4. It is recommended that a crane or hoist be used to han-
dle the MCC if at all possible. If a crane or hoist is not
available and other handling means are necessary,
extreme care must be exercised to insure that the equip-
ment is secured during the movement and placement
operations to prevent tipping and falling. Jacks, prybars,
dollies, roller lifts, and similar devices all require supple
mental blocking beneath the MCC and restraints to pre-
vent tipping. These devices are not recommended due to
the hazards implicit in their use.
Figure 1
Lifting a motor control center with an overhead crane.
Siemens Energy & Automation, Inc.
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