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Troubleshootina the VP1000 <br /> Important: Use extreme care and caution when performing the tests listed below. If 120 VAC is accidentally <br /> applied to the fault or DC terminals, the module will be destroyed. <br /> • With power applied to the dispenser, but no products authorized, there should be 120 VAC between neutral and 120 <br /> VAC on the module terminal strip. <br /> • As above, with any product authorized, there should be single speed power applied to the VP1000. <br /> Verify this by checking for 2-3 VDC from OUTPUT 1 (RED WIRE)to FAULT COMMON (ORANGE WIRE), (or from <br /> OUTPUT 2 TO FAULT COMMON) also; one GREEN LED should be illuminated. With a second product authorized <br /> on the opposite side of the dispenser i.e. one product on each side, the motor should operate at higher speed and <br /> there should be 2-3 VDC on both output 1 and 2 (to fault common) and both GREEN LED's should be illuminated. <br /> • With the pump running, a fault can be simulated by shorting, with a jumper wire, the "FAULT INPUT" (purple wire) <br /> to FAULT COMMON (orange). This should cause the motor to shut off, the solenoid valves to lose power and the <br /> dispenser to shut down.As long as the short is maintained, the red LED will be illuminated. Removing the short will <br /> not automatically reset the module. To reset the module, remove the short, remove power to the dispenser for fifteen <br /> seconds and restore power. The switch (some models)or jumper plug on the module will also disconnect the power as <br /> long as it is held over or removed for 15 seconds, the module should be reset and the LED extinguished. If removing <br /> the jumper plug, be sure that there are no hazardous vapors present. <br /> • If diagnosing a problem where the LED is already illuminated, a steady light indicates a low current condition, therefore <br /> expect a vane or rotor problem. If the LED is blinking, that indicates a high current condition and would expect to find a <br /> jammed rotor or vapor line flooded with product. <br /> • The electronics of the motor will make three attempts to have a successful start of the motor. If it detects a problem, on <br /> the fourth unsuccessful start, it will short the fault line to signal minus (DC-) and shut down the electronics. <br /> 8-17 <br /> GARB Approved IBM 8-Healy Universal Manual-Executive Orders VR-281 and VR-282 <br />