User Manual

6
PL-PLUS C OWNER’S MANUAL
All Furman Classic Series Condioners feature a rear rack BNC socket which will accept any 12 VAC (0.5A) gooseneck lamp assembly
(such as the Furman GN-LED or GN-I). Simply slide the BNC plug over the socket and rotate clockwise unl the connector snaps into
the locked posion. The rear rack lamp can be powered on or o with the rear light switch which is adjacent to the BNC connector.
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: wir-
ing 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-PLUS 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-PLUS C’s outlets. If the unit has been operat-
ing 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-PLUS C’s out-
lets, 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 be illuminated. If this happens, some level of protecon
from voltage surges will remain, but the PL-PLUS 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.
MULTI-SEGMENT LED VOLT METER:
This three-color, 20-LED bar-graph is an accurate, self-checking AC voltmeter that connually measures input AC voltage. The meter
reads from 90 to 128 volts in 2 volt increments. The opmal range voltages are indicated in green, with moderate and extremely high
or low voltages in yellow and red, respecvely. The voltmeter provides three special ashing paerns to indicate abnormal condions:
(1) If only the single le-most (beneath the 90V mark) LED ashes, the input voltage is marginally low.
(2) If all of the LED’s on the voltmeter ash, the input voltage is marginally high. Power to the PL-PLUS C’s outlets will remain unless
the incoming voltage rises above the Extreme Voltage Shutdown (EVS) cuto voltage (140 volts).
(3) If none of the LED’s on the voltmeter are lit, and the Extreme Voltages LED indicator is illuminated, then the PL-PLUS C has shut
down power to its outlets because the input voltage is in a range considered extreme (in excess of 140 volts).
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.