PRODUCT SUPPORT PROGRAM FOR UPGRADING THE 365-9796 CSDT BOARD ON CERTAIN UPSB505 UNINTERRUPTIBLE POWER SUPPLIES IN A PARALLELED APPLICATION ONLY Caterpillar

PRODUCT SUPPORT PROGRAM FOR UPGRADING THE 365-9796 CSDT BOARD ON CERTAIN UPSB505 UNINTERRUPTIBLE POWER SUPPLIES IN A PARALLELED APPLICATION ONLY

Usage:

TEBE2880-00

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24Mar2015

D-108

O-104

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Before/After	PRODUCT SUPPORT PROGRAM FOR UPGRADING THE 3659796/">365-9796 CSDT BOARD ON CERTAIN UPSB505 UNINTERRUPTIBLE POWER SUPPLIES IN A PARALLELED APPLICATION ONLY
4480		PS44676

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NOTE:

Caterpillar’s obligations under this Service Letter are subject to, and shall not apply in contravention of, the laws, rules, regulations, directives, ordinances, orders, or statutes of the United States, or of any other applicable jurisdiction, without recourse or liability with respect to Caterpillar.

NOTE:

This Program must be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS44676" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. If administered after failure, use "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

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NOTE:

The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.

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TERMINATION DATE

31Mar2017

PROBLEM

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The existing CSDT board (Prior to Revision CD)can cause customer load to drop on certain UPSB505 Uninterruptible Power Supplies in a paralleled installation. If the existing CSDT board is not revision CD or later, it can cause a paralleled unit to have a "Output out of tolerance" error due to a CSDT short command causing the paralleled unit to go to bypass and drop the customer load.

AFFECTED PRODUCT

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Model	Identification Number
UPSB505	YTM00100-00124, 126-144

PARTS NEEDED

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Qty	Part Number	Description
1	3659796	BOARD AS (CSDT)
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 7% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer.

ACTION REQUIRED

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In paralleled applications, upgrade the CSDT board to revision CD or higher. Only the CSDT board of AC Bypass Static Switch must be replaced with new revision (CD or higher).

Do not replace the Inverter CSDT.

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SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
0-100000 hrs, 0-72 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%