PRODUCT SUPPORT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING THE 201-0739 STATIC SWITCH THERMISTOR CABLE ASSEMBLY ON CERTAIN UPS 250, UPS 300, UPS 301, UPS 500G, UPS 600G, 1000Z UPS, AND 1200Z UPS UNINTERRUPTIBLE POWER SUPPLIES Caterpillar

PRODUCT SUPPORT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING THE 201-0739 STATIC SWITCH THERMISTOR CABLE ASSEMBLY ON CERTAIN UPS 250, UPS 300, UPS 301, UPS 500G, UPS 600G, 1000Z UPS, AND 1200Z UPS UNINTERRUPTIBLE POWER SUPPLIES

Usage:

REBE9897-01

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22Jul2013

(Revised 26Aug2013)

U-323

D-275

O-273

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*Before/After*	PRODUCT SUPPORT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING THE 2010739/">201-0739 STATIC SWITCH THERMISTOR CABLE ASSEMBLY ON CERTAIN UPS 250, UPS 300, UPS 301, UPS 500G, UPS 600G, 1000Z UPS, AND 1200Z UPS UNINTERRUPTIBLE POWER SUPPLIES
4450 1435 1400		PS43963

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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 "PS43963" 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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NOTE:	This Revised Service Letter replaces the 22Jul2013 Service Letter. Changes have been made to the Service Claim Allowances and Rework Procedure.

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TERMINATION DATE

31Jul2015

PROBLEM

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The existing static switch thermistor can give erroneous readings on certain UPS 250, UPS 300, UPS 301, UPS 500G, UPS 600G, 1000Z UPS, and 1200Z UPS Uninterruptible Power Supplies. If the existing thermistor is faulty it can cause the UPS MMU to transition to bypass.

AFFECTED PRODUCT

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Model	Identification Number
1000IZ UP	EDZ00106-00111, 113-116
1200Z UPS	HDR00135-00145
UPS 250	APZ00357-00358
UPS 300	CNJ00464-00472
UPS 301	CSY00247-00248
UPS 500G	TYD00102, 104-105
UPS 600G	DLD00104-00107

PARTS NEEDED

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Qty	Part Number	Description
1	2010739	CABLE AS
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 23% 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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Inspect the static switch thermistor packing slip number (PS #) and replace if number is 22266, 22879, 23360. Refer to the attached Rework Procedure.

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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%
0-20000 hrs, 0-12 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

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NOTE: This is a 4.0-hour job

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PARTS DISPOSITION

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Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

Rework Procedure

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1. Shut down MMU in accordance with the shutdown procedure in Systems Operation/Testing and Adjusting, RENR9988.

2. Remove the Static Switch Assembly from flywheel cabinet (MMU) in accordance with the removal procedure in Systems Operation/Testing and Adjusting RENR9988.
Note: The Active Power Modules (APM) will need to be removed to gain full access to the Static Switch Assembly.

Image1.1.1

Image1.1.2

3. Inspect the thermistor packing slip number. If the packing slip number (PS #) is 22266, 22879 or 23360, replace thermistor.

Caution: Do not pull on the thermistor lead or apply excessive torque to remove.

4. To remove the thermistor, unscrew with 1/4 inch wrench or needle-nose pliers. If zip tied to a standoff, remove the zip tie as well.

5. Install new thermistor hand tight. Do not torque. Be sure to plug the thermistor connector into the SSI.

Image1.2.1

Image1.2.2

6. Reinstall the Static Switch Assembly in accordance in Systems Operation/Testing and Adjusting RENR99887.

Restore power to flywheel cabinet. No calibration necessary.