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DPC Control Board DPC Power Board DPC Vent Fan DPC Contactor EMI Filter Precharge Board Output Inductors IPM Power Supply 3. Measure DC Bus Voltage With the lid of the DPC removed, locate the screw terminals E4 (Bus-) and E5 (Bus+) at the top of the power board (large circuit board). Set the Digital Multimeter to measure DC voltage and measure the voltage of terminal E5 with respect to E4. This voltage should be greater that 500 VDC. 4. Check Fuses F500 and F501 TURN OFF THE MAIN POWER to MicroTurbine. Switch off the battery breaker if the battery option is installed. Wait five minutes or until the DC bus voltage (as measured in Step #3) falls below 20 VDC. Locate fuses F500 and F501 directly above the vent fan on the power board. Set the Digital Multimeter to measure resistance and measure the resistance of each fuse. The resistance should be less than one Ohm. 5. Check Power Supply Digital Power Controller (DPC) Observe Safety Precautions - Refer to Safety Instructions for Details 430001-001 Rev D (June 2003) 1-7 Model C30 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. TURN ON THE MAIN POWER to MicroTurbine. Locate LED500 on the power board to the left of the vent fan. TURN OFF THE MAIN POWER. Disconnect connectors J1 through J6 from the DPC Control Board. TURN ON THE MAIN POWER. Set RMS DMM to measure DC voltage. Measure the voltage on connector J11 (at the bottom right corner of the DPC Control Board) between pins 3 and 5 (counting from top to bottom). If the voltage is 13.8 VDC, then the issue is in the peripheral devices. TURN OFF THE MAIN POWER. Reconnect the J1 connector to the DPC Control Board. TURN ON THE MAIN POWER and observe if the voltage goes low.PDF Image | Capstone Table of Contents ALL Series Fault Codes
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