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3.1.6. 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 microturbines with pressurized enclosures, such as those used in hazardous locations. If the Stand Alone batteries require a recharge (after a stop command is issued), the microturbine will continue to operate with fuel in order to recharge the batteries. The microturbine will enter the cool down period after the batteries have reached a 90 to 95% state of charge. The batteries can require as long as 20 minutes to recharge after a stop command has been issued before entering cooldown. This will be followed by a cooldown period of up to 10 minutes. 3.1.7. Restart The microturbine system can normally be restarted after a shutdown, while the batteries recharge, 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. 3.1.8. Emergency Stop (E-Stop) CAUTION: Repeated use of the optional Emergency Stop function will result in damage to the microturbine. Use only in emergency situations. The User Connection Board contains input pins to which the user can connect an Emergency Stop (E-Stop) device. The E-Stop function enables 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. 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. Capstone Turbine Corporation Model C200 User’s Manual 400008 Rev G (October 2013) Page 25 of 64 Capstone reserves the right to change or modify, without notice, the design, specifications, and/or contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction.PDF Image | Capstone MicroTurbine Model C200 User's Manual
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