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Publication Title | All Horizontal Fuel Gas Boosters Undervoltage Protection

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

Service Notice SN0014

Date: From: Subject:


All Horizontal Fuel Gas Boosters with Copeland part number SZN22C3A-BBA-221 stamped on the back of the unit (Capstone P/N 516592-100). See Figure 1 for detailed location.

Figure 1. FGB Identifier Label


Copeland Horizontal FGBs in the field may require a lower undervoltage preset value if the end-user is experiencing fluctuations in load power and intermittent FGB shutdown. Load power fluctuations may result in FGB shutdown, loss of fuel to the MicroTurbine and subsequent MicroTurbine shutdown. If the FGB does not experience these symptoms, no action needs to be performed. If the FGB does experience these symptoms, Capstone recommends that Service Providers perform a software setting change to reset the Copeland undervoltage value to prevent any possible issues in performance. See “Copeland FGB Undervoltage Setting Adjustment Work Instruction” 440125 for the detailed procedure.


It is the responsibility of Capstone to inform Service Providers of required procedures to correct potential undervoltage issues on the Copeland FGB.

Capstone Technical Support

If you have additional questions, please contact:

450059-001 Rev A (August 2005) 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.

August 2005

Capstone Technical Support

Horizontal FGB Undervoltage Protection

Capstone Technical Support

Telephone: (818) 407-3600 Facsimile: (818) 734-1080

Toll Free Telephone: (877) 282-8966 E-mail:

Capstone Technical Support - Japan

Telephone: (818) 407-3700

Facsimile: (818) 734-1080


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