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Troubleshooting a MicroTurbine that Does Not Wake Up Overview This section outlines instructions for trouble- shooting a MicroTurbine that does not wake up, i.e., there is no display of fault codes or RS-232 communication to receive a fault code. NOTE: Perform ALL of the following troubleshooting instructions since there may be more than one problem causing a MicroTurbine not to wake up. Using a Digital Multi Meter (DMM), perform ALL of the following troubleshooting instructions. Record all your observations and measurements as you perform each step. Contact Capstone Technical Support for further assistance as required. NOTE: When calling Capstone for further assistance, have the results from ALL of the following tests available for consultation with a Technical Support Representative. Refer to MicroTurbine assemblies and the System Block Diagrams on the following pages as required. Grid Connect Mode Troubleshoot the Grid Connect mode as follows: A. Measure Grid Voltage 1. Set the Digital Multimeter (DMM) to measure AC voltage. 2. Measure each phase of the grid connection at the User Connection Bay junction box to the chassis ground (L1 to ground, L2 to ground, and L3 to ground). Each phase should typically measure 277 VAC (or between 208 and 305 VAC). 3. Measure each combination of line to line voltages (L1 to L2, L1 to L3, L2 to L3). Each should typically measure 480 VAC (or between 360 and 528 VAC). Power Bay (UCB) L1 N PE/G B. Check the Power Board L2 L3 Check the Power Board on each of the ECM, LCM and BCM assemblies as follows: With the 480 VAC power applied, measure the DC voltage across each of the four Capacitors (between the Cap+ and Cap-) on the Power Board. It should measure approximately 1/2 of the bus voltage. At 480 VAC grid voltage, the bus voltage is 670 VDC. The voltage across each capacitor should measure 335 VDC ± 5%. If any of the capacitor voltages is out of range, replace the Power Board. REMOVE ALL INPUT POWER TO SYSTEM FOR REMAINING STEPS. WARNING: Remove all input power to the system before performing the following steps. Failure to turn OFF power may cause personal injury or death, or damage to equipment. Observe Safety Precautions - Refer to Safety Instructions for Details 430013-001 Rev C (July 2003) 1-6 Model C60 Troubleshooting Guide 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 | Table of Contents for Series Fault Codes
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