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Unpacking and Inspections
4
1.2.1 Handling Considerations
The STS2/PDU is bolted to a wood shipping pallet to allow handling by forklift equipment or a pallet
jack.
Check the unit size and weight. Refer to the cabinet drawings furnished with the unit for size and
weight. Typical cabinet dimensions are shown in Figures 7 through 22. Typical unit crated weights
are:
Plan the route. Review the route over which the unit will be transported to its installation location to
ensure that all passages are large enough to accommodate the unit and support the weight.
Check for any non-negotiable corners or offsets in hallways. Before moving the unit to the intended
location, review 2.0 - Location Considerations.
1.2.2 Unit Preparation
The unit can be removed from the pallet before it is moved to its location.
Complete the following steps to properly remove the STS2/PDU from the shipping pallet:
1. Set the pallet in a level area with enough room to maneuver and remove the unit.
2. Remove the bolts holding the unit to the shipping pallet (located in the base of the unit).
3. Remove the shipping blocks from under the frame of the unit.
4. Use a forklift to raise the unit off the pallet and onto the floor. On the 250A unit ensure that the
forklift is clear of the unit's casters and leveling feet. Lift the unit from the rear.
5. Conduct an internal inspection of the unit. See the list in 1.3 - Internal Inspections.
1.3 Internal Inspections
After the STS2/PDU has been unpacked, conduct an internal inspection:
1. Verify that all items have been received.
2. If spare parts were ordered, verify their arrival.
3. After the Static Transfer Switch 2 Power Distribution Unit has been removed from the pallet,
open the door and remove cabinet panels to check for shipping damage to internal components.
4. Check for loose connections or unsecured components in the cabinet(s).
5. Check for any unsafe condition that may be a potential safety hazard.
After the STS2/PDU has been inspected and no problems are found, the unit can be moved to its
installation location. If using a forklift, remember to lift the unit from the rear.
!
WARNING
Exercise extreme care when handling STS2/PDU cabinets to avoid equipment damage or
injury to personnel.
The cabinet can be safely tilted 15 degrees in any direction by forklift.
If moving the unit up a ramp on its casters (if the unit is so equipped) or a pallet jack, ensure
that the incline does not exceed 15 degrees.
Locate the center of gravity symbols and determine the unit’s weight before handling
the cabinet.
Table 1 Shipping weights (typical)
Model Weight - lbs. (kg)
250A 3730 lbs. (1692 kg)
400A 4900 lbs. (2132 kg)
600A 5580 lbs. (2531 kg)
800A Module A* 4052 lbs. (1838 kg)
800A Module B* 4595 lbs. (2084 kg)
*800A ships on two separate pallets