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Publication Title | Model C30 Generator Terminal Block Nut Replacement

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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Telephone: (818) 734-5300 • Facsimile: (818) 734-5320 • Website:

Service Bulletin SB0068

Date: From:


July 2004

Capstone Technical Support

Model C30 Generator Terminal Block Nut Replacement

NOTE: This Service Bulletin supersedes SN0004. Systems Affected

All existing Capstone Model C30 MicroTurbine systems shipped after May 2001.

Safety Precautions

Only Capstone Authorized Serviced Providers should open the MicroTurbine and other equipment connected to the MicroTurbine. The systems can include multiple sources of power. Observe all Safety Instructions contained within the MicroTurbine User’s Manual.


The existing 11-32 O.D. nut (511398) used on the Model C30 Generator Terminal Block has been upgraded to ensure more consistent torque during operation. A replacement 10-32 O.D. nut (516632) should be installed on the stainless steel terminal block stud and torqued to 30 inch-pounds with a 1/4-inch socket wrench at the next point in time that the AC Generator Terminal Block lugs are required to be disconnected.

All units shipped prior to May 2001 that have brass terminal block studs DO NOT require replacement. However, Capstone recommends that the torque be verified on all field units at the next regularly scheduled service interval due to the high power nature of the connection.


Capstone is responsible for providing a shipment of replacement nuts to Authorized Service Providers.

Capstone is responsible for providing this Service Bulletin to Authorized Service Providers. If you have additional questions, please contact Capstone at:

450047-001 Rev A (July 2004) Page 1 of 1

This information is proprietary to Capstone Turbine Corporation. Neither this document nor the information contained herein shall be copied, disclosed to others, or used for any purposes other than the specific purpose for which this document was delivered. Capstone reserves the right to change or modify without notice, the design, the product specifications, and/or the contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction.

Capstone Technical Support

Toll Free Telephone: (877) 282-8966 Service Telephone: (818) 407-3600 Facsimile: (818) 734-1080


Capstone Technical Support (Japan)

Service Telephone: (818) 407-3700 Facsimile: (818) 734-1080


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