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Capstone Turbine Corporation MicroTurbine User’s Manual Start-up Capstone A Start command can be issued from the display panel or remotely via the optional Capstone Remote Monitoring Software. When the command has been issued, the generator operates as a motor to bring the MicroTurbine up to ignition speed, at which point fuel is introduced into the combustion chamber and ignited. When the Turbine Exit Temperature (TET) sensors detect an increase in temperature, the system is declared lit, and the MicroTurbine accelerates to full load. The start-up process from a cold start to full load requires up to two minutes. For offshore applications with the pressurized enclosure (Class I, Division 2 option), this process may increase to five minutes, due to an air purge cycle. Also, the MicroTurbine system can only be started via the PLC controlling the pressurization system. Shutdown When the MicroTurbine is issued a Stop command, power output is reduced, followed by a period that the MicroTurbine is motored at nominal speed to remove heat stored in the recuperator and MicroTurbine engine in order to protect the system components. The overall cooldown period is up to ten minutes, but is affected by MicroTurbine model and temperature at shutdown. A restart may be attempted at any time, and a start will occur after completion of the initial cooldown period. Auto Restart is not available for offshore systems with Class I, Division 2 operation. If the Stand Alone battery requires a recharge (after a stop command is issued), the MicroTurbine will continue to operate with fuel in order to recharge the battery. The MicroTurbine will enter the cool down period after the battery has reached a 90 to 95% state of charge. The battery can require as long as 20 minutes to recharge after a stop command has been issued before entering cooldown. Emergency Stop (E-Stop) The optional Emergency Stop (E-Stop) kit is designed to allow for the safe and immediate shut down of the MicroTurbine in the event of an emergency. Activation of the E-Stop immediately shuts off fuel and electrical output. This will cause the compressor bypass valve to open, vent the compressed air out of the MicroTurbine, and the turbine will coast to a stop. After an emergency stop, the power to the MicroTurbine must be turned off for 30 seconds before a restart can be attempted. Emergency stops should NEVER be used for routine shutdowns. Emergency stops increase stress on the system components and will result in reduced service life of the MicroTurbine. Repeated use of the optional Emergency Stop switch will result in damage to the MicroTurbine. Use only in emergency situations. Also, after an emergency stop, you may want to close the external fuel isolation valve to shut off any additional fuel flow into the MicroTurbine. The external fuel isolation valve must be returned to the open position before a restart of the MicroTurbine is attempted. Restart The MicroTurbine system can normally be restarted after a shutdown, while the battery recharges, or during the cool down period before the speed of the MicroTurbine reaches zero. This allows for faster power output and helps to eliminate wear on the bearings. Page 18 of 56 400001-001 Rev. C (February 2005) 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. CAUTIONPDF Image | 2002 Capstone User Guide
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