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16. TROUBLESHOOTING THE VP1000: <br /> ❑ Use extreme care and caution when performing the tests listed below. If 120 VAC is <br /> accidentally 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 <br /> between neutral and 120 VAC on the module terminal strip. <br /> ❑ As above, with any product authorized, there should be single speed power applied to <br /> the VP1000. Verify this by checking for 2-3 VDC from OUTPUT 1 (RED WIRE) to FAULT <br /> COMMON (ORANGE WIRE), (or from OUTPUT 2 TO FAULT COMMON) also; one <br /> GREEN LED should be illuminated. With a second product authorized on the opposite side <br /> of the dispenser i.e. one product on each side, the motor should operate at higher speed <br /> and there should be 2-3 VDC on both output 1 and 2 (to fault common) and both GREEN <br /> LED's should be illuminated. <br /> ❑ With the pump running, a fault can be simulated by shorting, with a jumper wire, the <br /> "FAULT INPUT" (purple wire) to FAULT COMMON (orange). This should cause the motor <br /> to shut off, the solenoid valves to lose power and the dispenser to shut down. Also, as long <br /> as the short is maintained, the red LED will be illuminated. Removing the short will not <br /> automatically reset the module. To reset the module, remove the short, remove power to <br /> the dispenser for twenty seconds and restore power. The module should now be reset and <br /> the red led extinguished. This can also be accomplished by using the power reset (PWR <br /> RESET) on the module. <br /> ❑ If diagnosing a problem where the LED is already illuminated, a steady light indicates a <br /> low current condition, therefore expect a vane or rotor problem. If the LED is blinking, that <br /> indicates a high current condition and would expect to find a jammed rotor or vapor line <br /> flooded with product. See Start-up / New Installation / Warranty /Annual Testing Form. <br /> ❑ The electronics of the motor will make three attempts to have a successful start of the <br /> motor. If it detects a problem, on the fourth unsuccessful start, it will short the fault line to <br /> signal minus (DC-) and shut down the electronics. <br /> MC 100 Interface Module <br /> d rrYYiir Y ■ lives ■ <br /> ■ <br /> a ■ <br /> ■ ■ <br /> R <br /> 0 <br /> w <br /> ■ <br /> � - a <br /> w <br /> 8-IB <br /> CARE Approved IBM 8 Wayne Harmony Series(Assist)-Executive Orders VR-281 and VR-282 <br />