Extreme Voltage Shutdown Indicator; Protection Ok Indicator; Multi-Segment Led Volt Meter; Troubleshooting - Furman PL-PLUS C Classic Series Owner's Manual

All Furman Classic Series Conditioners 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 until the connector snaps into
the locked position. The rear rack lamp can be powered on or off 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 specifically designed to stand up to the enormous high inrush current
demands of many power amplifiers. When the top portion of the switch is pressed flush with the panel, power is present.
EXTREME VOLTAGE SHUTDOWN (EVS) INDICATOR:
The Extreme Voltage LED Indicator is normally off. It is located to the left 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 connection 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 operation would be impossible and shuts the power
down before damage can occur.
Upon initially 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 cutoff. 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 off power to the outlets and the Extreme
Voltage LED will light.
NOTE: If the mains power is above the high cutoff 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 off, then on again. Avoid turning the unit back on without
first 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 protection from transient voltage spikes and surges, nature has a
way of occasionally creating electrical forces that are beyond the capabilities of ANY surge suppression device to absorb without some
degree of damage (such as a direct lightning hit in an outdoor application). In the rare instance that this occurs, the green "Protection
OK" LED indicator (located to the right of the retractable light tubes), will not be illuminated. If this happens, some level of protection
from voltage surges will remain, but the PL-PLUS C's clamping voltage rating will be compromised and the unit must be returned to
Furman for service.
NOTE: Furman's Classic Series power conditioners do not compensate for high or low AC line voltage. If you frequently move your
rack to different locations, derive power from generators, use very long extension cords, travel internationally, or are in an area prone
to brownouts, you may benefit 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 continually measures input AC voltage. The meter
reads from 90 to 128 volts in 2 volt increments. The optimal range voltages are indicated in green, with moderate and extremely high
or low voltages in yellow and red, respectively. The voltmeter provides three special flashing patterns to indicate abnormal conditions:
(1) If only the single left-most (beneath the 90V mark) LED flashes, the input voltage is marginally low.
(2) If all of the LED's on the voltmeter flash, 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) cutoff 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.
Action Needed: Unplug one piece of equipment from the Furman conditioner and push the round reset tab into the circuit breaker
bezel.
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PL-PLUS C OWNER'S MANUAL