SERIES II 20 amp Power ConditionerS
units, the Extreme Voltage indicator LED will light if the input voltage is above the extreme voltage cutoff, and power will not be applied to the unit’s outlets. If the unit has been
operating with an acceptable input voltage and
subsequently that voltage exceeds 135V, it will shut off power to the outlet and the Extreme
Voltage LED will light. (E version: over voltage shut down is 260 VAC. Guards against open
neutral and accidental connection to 300+
VAC)
Protection OK Indicator:
Although the Furman SMP circuit assures virtually protection from transient voltage spikes and surges, nature has a way of occasionally creating electrical forces that are beyond the capabilities of any TVSS device to absorb without some degree of damage. In the rare instance that this occurs, the green “Protection OK” LED indicator located on your front panel will dim. If this happens some level of protection from voltage surges will remain, but the Furman’s clamping voltage rating will be compromised. The unit must be returned to Furman Sound, or an authorized Furman
Service center for repair.
NOTE: If the mains power is above the high cutoff voltage and has caused the unit to remove power from its outlets, it cannot 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.
TROUBL E SHOOTING GUIDE
1.) Symptom: No power to the AC outlets.
Possible Cause: Circuit breaker switch has tripped to the off position, due to excessive load.
Action Needed: Remove one piece of equipment from the Series II unit, open the hinged switch / breaker cover, and reset the switch to the on position.
2.) Symptom: No power to the AC outlets, “Protection OK” indicator is not lit.
Possible Cause: Either the AC outlet to which your Series II device is connected has no AC voltage present, or the unit has been subjected to a sustained voltage in excess of 400 Volts.
Action Needed: Plug the Series II unit into an AC receptacle where AC voltage is present. If the problem persists, the protection circuit may be damaged, and require factory service.
3.) Symptom: Extreme Voltage indicator lit.
Possible Cause: Input voltage is above 135- 140 volts (270 – 280 volts E version), causing power to the unit’s outlets to be shut down.
Additionally, if the voltage is below 85 - 90 volts at turn on, the unit will not allow AC voltage to reach the outlets.
Action Needed: Correct the line voltage, then; turn the unit on. Consider installing a Furman voltage regulator.
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