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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Application Guide: Offshore/Coastal Systems – Hazardous and Non-hazardous Installations Maintenance General Inspection Inspect seal gaskets around doors and panels for air or water leaks. Also check leaks through bolt threads supporting the blower housing to the main cabinet. If the blower housing is removed for service, all bolt threads will require sealant before mounting. This applies to all exterior fasteners. MicroTurbine Internal Components Servicing of some internal MicroTurbine components require removal of the center column on the enclosure. Special care should be taken to avoid gasket damage. Refer to “Center Column Removal and Installation Work Instruction” (440119). Gas Detector (Optional) In most applications, monthly to quarterly calibration intervals will assure reliable detection. However, industrial environments differ. Upon initial installation and commissioning, tests should be performed, weekly then monthly. Test results should be recorded and reviewed to determine a suitable calibration interval. Please refer to the calibration instructions in the Appendix E, “Gas Detector.” The calibration gas port is located immediately below the gas monitor, on the lower rear side of the enclosure (See Figure 2). The gas detector option provides three start permissives for the Microturbine, Alarm1, Alarm2 and Fault. Alarm1 is preset at 20 percent and Alarm2 at 40 percent of the LEL. (see page E-1). The Fault contact provides a signal in case of a power or general failure of the gas detector. Bypassing the Gas Detector In most cases, the gas detector will not need to be bypassed for service. The gas detector can be energized while servicing the system, and will only trip in the event of a gas leakage. When troubleshooting the system, if the gas detector is suspected to be cause of the problem, then the gas detector alarm contacts may be jumpered. To jumper the alarm contacts on the gas detector, remove power to the PLC, control logic and gas detector. Rotate the cover on the gas detector counter-clockwise until it comes off. Refer to the Appendix E, “Gas Detector” for details. After removing the cover, remove the main circuit assembly by gently pulling it off by the two stems. The main circuit assembly should be handled with ESD precautions and extreme care, as it is very fragile. Move all jumpers for ALM1, ALM2 and Fault to the NC position (place jumpers between the Common and NC). Do not power the gas detector while performing the tests. After the tests are completed, return the jumpers to their original position (between the middle terminal pin and NO), re-install the main circuit assembly of the gas detector, and screw the explosion-proof cover back on. 480010-001 Rev. A (February 2005) Page 9 of 23 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.PDF Image | Application Guide Offshore/Coastal Systems - Hazardous and Non-Hazardous Installation Options for the Capstone MicroTurbine
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