UPS 250, UPS 300, UPS 301, UPS 500, UPS 600, UPS 750 and UPS 900 Uninterruptible Power Supplies Caterpillar

• The Input/Output Cabinet

• The System Cabinet

• The Cabinet for the Multiple Module Unit (MMU)

Note: The Multiple Module System may have a total of 4 Multiple Module Units.

Positioning of the cabinets will start with the Input/Output (I/O) cabinet. The System Cabinet will be positioned to the right of the Input/Output Cabinet. The MMU Cabinets will be positioned to the right of the System Cabinet. This cabinet is designated "MMU-1". The MMU that is positioned to the right of "MMU-1" will be "MMU-2". All additional Multiple Module Units will follow this pattern.

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The Location of the Serial Number Plate

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Serial Number Location

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This Illustration shows the Serial Number Location for the following cabinets: Input/Output Cabinet, System Cabinet and MMU Cabinet

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(1) Location for the Serial Number

The serial number for the system can be located on a label in the bottom left hand corner inside the system cabinet or on the uppermost frame crossmember. The serial number plate will have the number for the sales model and the serial number on the plate. The serial number will start with a three-position alpha prefix. The serial number will end with a number with five digits. Refer to Table 1 for the following information: Model Number, Serial Number Prefix and the number of cabinets in the system.