Furman PL-PRO C, Owner'S Manual

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PL-PRO C OWNER’S MANUAL

lamps are not in use, we recommend turning the dimmer fully counterclockwise, or pushing the knob to the off setting to maximize 
the life of the LED’s.  Whether the light tubes are fully extended or flush with the front panel, there will be no appreciable heat regard-
less of the dimmer setting due to the efficiency of our full light spectrum LED’s.  

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.  

ULTRA-LOW RESISTANCE MAGNETIC POWER SWITCH / CIRCUIT BREAKER:

Furman’s Classic Series 20 amp capacity power switch is specifically designed to stand up to the enormous high in-rush current de-
mands of many power amplifiers.  Additionally, Furman magnetic circuit breakers are not sensitive to temperature, and will not raise 
the AC impedance as do many, less costly thermal breaker.  If the 20 amp RMS current capacity of the PL-PRO C is exceeded, the spring 
tensioned-switch will immediately switch to the off position.  You will need to switch the toggle back to the on position once the prob-
lem is corrected (typically by eliminating one component, or until the RMS current does not exceed 20 amps or 2400 watts). 

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-PRO 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-PRO C’s outlets. If the unit has been operating 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-PRO 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-PRO C’s clamping voltage rating will be compromised and the unit must be returned to Fur-
man 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-PRO 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-PRO C has shut  
        down power to its outlets because the input voltage is in a range considered extreme (in excess of 140 volts).

USB CHARGER:

The Furman PL-PRO C’s USB charger provides an easy way to recharge many popular electronic accessories as well as cellular com-