Indicators
Extreme Voltage Shutdown Indicator
Furman’s SMP+ circuit senses sustained voltages that are high enough to cause damage to your components, and shuts the power down before damage can occur. Such conditions can include accidental connection to a 240VAC source (where 120VAC is expected), or an open neutral from a 208 or 240VAC source.
The Extreme Voltage Shutdown LED is normally off. If an input voltage in excess of 137VAC is sensed, either on initial
NOTE: If the mains power is above the high cutoff voltage and has caused the unit to remove power from its outlets, it can not restore power without the operator manually turning the unit off then on again. Avoid turning the unit back on without first checking the source of the problem, and perhaps changing the AC source.
Protection OK Indicator
Although the Furman SMP+ circuit assures virtually maintenance- free protection from transient voltage spikes and surges, nature has a way of occasionally creating electrical forces that are beyond the capabilities of any transient voltage surge suppressor device to absorb without some degree of damage. In the rare instance that this occurs, the blue “Protection OK” LED indicator will turn off. If this happens, some level of protection from voltage surges will remain,
