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CPT Controller Manual ® ® RE®JA <br /> Inverter Board <br /> The Inverter board contains power semiconductors, which take the <br /> DC voltage from the Capacitor board and change it to pulse width- <br /> modulated, three-phase, electrical power for the unit motor pump <br /> (UMP). It also varies the frequency to control the speed of the <br /> motor. <br /> CAPACITOR <br /> BOARD INVERTER <br /> BOARD <br /> a. PROCESSOR <br /> s BOARD <br /> f 4` <br /> � i <br /> aY ROTARY DIAL <br /> a ; FOR PRESSURE <br /> TANDEM <br /> CONNECTOR <br /> F/GURE2.2 INSIDE OF CPT CONTROLLER <br /> The Capacitor Charge light on the Inverter board of the CPT <br /> Controller indicates when the Capacitor board is energized. <br /> The power supply for the transducer is located on the Inverter board <br /> and is fuse-protected. Using fuses prevents permanent damage to <br /> the CPT if miswiring of the high voltage to the low-voltage <br /> transducer wires occurs. The fuses for the transducer are common, <br /> removable, and may be purchased at an electrical supply house. <br /> Notice/ Fuses should be 0.1 amp,250V,fast-acting. <br /> Capacitor Board <br /> The incoming AC power line is connected to the Capacitor board. <br /> This board contains four capacitors that store energy. The <br /> Capacitor board also contains voltage regulators that protect the <br /> Controller from incoming voltage fluctuations. <br /> ARE260-240 Rev.A ♦ 6/97 2-3 Chapter 2: Red Jacket CPT Controller <br />