User Manual

6
PL-8 C OWNER’S MANUAL
ON/OFF ROCKER SWITCH:
Furman’s Classic Series 15 amp capacity power switch is specically designed to stand up to the enormous high inrush current
demands of many power ampliers. When the top poron of the switch is pressed ush with the panel, power is present.
EXTREME VOLTAGE SHUTDOWN (EVS) INDICATOR:
The Extreme Voltage LED Indicator is normally o. It is located to the le of the power switch, though during normal use it will NOT be lit.
The Extreme Voltage indicator monitors a hazard common in the entertainment, remote broadcast, and AV contractor industries:
wiring faults. For example: accidental connecon to 208VAC where 120VAC is expected, or an open series neutral from a 208 to
240VAC electrical service. The Furman EVS circuit senses voltages that are so high that operaon would be impossible and shuts the
power down before damage can occur.
Upon inially applying power to the PL-8 C, the Extreme Voltage indicator will illuminate to a bright red if the input voltage is above
the extreme voltage cuto. When this occurs, power will not be applied to the PL-8 C’s outlets. If the unit has been operang with an
acceptable input voltage and subsequently that voltage exceeds 140V, it will shut o power to the outlets and the Extreme Voltage
LED will light.
NOTE: If the mains power is above the high cuto voltage and has caused the EVS circuit to remove power from the PL-8 C’s outlets,
it cannot restore power without the operator manually turning the unit o, then on again. Avoid turning the unit back on without rst
checking the source of the problem and changing the AC source (if necessary).
PROTECTION OK INDICATOR:
Although the Furman SMP circuit assures virtually maintenance-free protecon from transient voltage spikes and surges, nature has a
way of occasionally creang electrical forces that are beyond the capabilies of ANY surge suppression device to absorb without some
degree of damage (such as a direct lightning hit in an outdoor applicaon). In the rare instance that this occurs, the green “Protecon
OK” LED indicator (located to the right of the retractable light tubes), will not illuminate. If this happens, some level of protecon from
voltage surges will remain, but the PL-8 C’s clamping voltage rang will be compromised and the unit must be returned to Furman for
service.
NOTE: Furman’s Classic Series power condioners do not compensate for high or low AC line voltage. If you frequently move your
rack to dierent locaons, derive power from generators, use very long extension cords, travel internaonally, or are in an area prone
to brownouts, you may benet from the use of one of Furman’s AC Voltage Regulators.
TROUBLESHOOTING
1.)Symptom: No power to the AC outlets.
PossibleCause: The circuit breaker (located on the rear panel - adjacent to the AC inlet cord) has tripped due to excessive load.
AconNeeded: Unplug one piece of equipment from the Furman condioner and push the round reset tab into the circuit breaker
bezel.
2.)Symptom: No power to the AC outlets, “Protecon OK” indicator is not lit.
PossibleCause: Either the AC outlet to which your Furman condioner is connected has no AC voltage present, or the protecon
circuitry in your unit has been compromised.
AconNeeded: Plug the Furman condioner into an AC receptacle where a nominal 120 VAC is present. If the problem persists,
contact Furman for service.
3.)Symptom: Extreme Voltage (EVS) indicator lit.
PossibleCause: Input voltage is above 140V causing power to the unit’s outlets to be shut down. Addionally, if the voltage is below
85V – 90V at turn on, the unit will not allow AC voltage to reach the outlets.
AconNeeded: Correct the line voltage, then turn the Furman condioner on. If the voltage present is below 114 VAC or above 126
VAC, consider installing a Furman voltage regulator.