User manual FURMAN IT1210

[. . . ] But power distribution in North America, unfortunately, is not balanced. The distribution standards currently in use were derived from practices established over a century ago, when electric power use was limited to lighting and motors-long before any EMI-sensitive applications existed. The emphasis then was on convenience (from the power utilities' standpoint) and safety, but not noise cancellation. The result was a three-wire distribution scheme in which 120V branch circuits have a hot wire and a neutral wire, with the neutral tied to a third wire connected for safety to an earth ground. [. . . ] If you are installing the IT- 1210 in a rack that has rear as well as front mounting rails, you may wish to order adjustable rear rack ears from Furman. They allow the IT-1210 to be securely attached both in front and in back. Order model RRM-2. Operation Circuit Breaker/Switch: The IT-1210 has just one control: the large blue switch on the front panel that is both a precision magnetic circuit breaker and an on-off switch. This breaker will trip (snap to the "off" position) if the current drawn through the IT-1210 exceeds 10 amps. If this occurs, reduce the load by unplugging some equipment, then flip the switch back to the "on" position. Soft Start/Outlets On/Off Indicator: When power is first applied to the IT-1210, the Soft Start feature is activated, indicated by a steady yellow color. Soft Start limits the inrush current to the IT-1210's transformer, which would otherwise be excessive. The result is that the IT-1210's output voltage does not reach its full level until several seconds have elapsed. When it has reached its maximum level, the LED color turns to green, indicating that all outlets are fully powered. Should the power at the IT-1210's outlets go off for any reason-either because the power switch is in the "off" position or because an Extreme Voltage Shutdown has occurred, the LED will light up red. Extreme Voltage Shutdown: This LED status indicator is normally off. It monitors a hazard particularly common in the entertainment industry: wiring faults-for example, accidental connection to 220V. The IT-1210 senses voltages that are so high or low that operation would be impossible (under 80V or over 140V) and shuts the power down before damage can occur. Upon initially applying power to the IT-1210, this indicator will be lit if the input is receiving less than 80 volts or more than 140 volts, and power will not be applied to the IT-1210's outlets. If the unit has been operating with an acceptable input voltage and then that voltage goes out of the acceptable range, the IT-1210 will shut off power to the outlet and this LED will begin flashing. If the mains power is below 80 volts and has caused the IT- 1210 to remove power from its outlets, the IT- 12 10 will not restore power to the outlets until the mains voltage is more than 90 volts. If the mains power is above 140 volts and has caused the IT- 12 10 to remove power from its outlets, the /T- 12 10 will not restore power to the outlets until the mains voltage is less than 130 volts. The reason for this is to prevent the power oscillating on and off in marginal conditions. LED Voltmeter: This three-color, 20-LED bar graph is an accurate, self-checking AC voltmeter that continually measures the IT-1210's input voltage. The meter reads from 90 to 128 volts in two-volt steps. The normal range voltages are indicated in green, moo with moderate and extremely high or low voltages in yellow and red respectively (see chart on the previous page). The voltmeter provides three special flashing patterns to indicate abnormal power conditions: 1. [. . . ] During this period, Furman will make any necessary repairs without charge for parts or labor. Shipping charges to the factory or repair station must be prepaid by the owner; return shipping charges (via UPS Ground) will be paid by Furman. This warranty applies only to the original owner and is not transferable. To get an R/A Number, please call the Furman Service Department, (707) 763-1010, between 8 am and 5 pm U. S. [. . . ]