Furman P-1800 PF Prestige Series, Owner'S Manual

7

FRANÇAIS 

ENGLISH

ESP

AÑ

OL

Upon initially applying power to the P-1800 PF R, 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 P-1800 PF R’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 Furman’s 

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.

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 TVSS 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 lower right of the voltage meter) will not illuminate.  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.
 
USB Charger:
The Furman P-1800 PF R’s USB charger provides an easy way to recharge many popular electronic accessories as well as cellular 
communication devices by simply plugging the re-charge cord into the front panel socket.  Please note: as there are currently many 
standards for USB, some devices may not be compatible with our charger.

Rear BNC Connector:
The Furman P-1800 PF R features 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.  

Transformer Plug (“Wall Wart”) Secure Straps:
The Furman P-1800 PF R features three rear panel AC outlets that are widely spaced for plug transformers (wall warts).  Additionally, 
these may be secured for transport with the Velcro™ Secure Straps that are included in the product carton.  Each strap must be first 
secured with the supplied Philips screw, and the Furman Secure Strap will tie the “wall wart “(transformer) in place.

Isolated Outlet Banks:
The Furman P-1800 PF R features eight rear-panel outlets in 3 isolated banks. If you are connecting analog and digital equipment to 
the P-1800 PF R, it is recommended to connect the analog equipment to “Bank A” and digital equipment to “Bank B” (or vice-versa) 
to minimize electrical crosstalk. “Bank 3” features two high-current outlets. These outlets minimize line impedance due to Furman’s 
Power Factor Technology and should be used for amplifiers, powered studio monitors, etc.

TROUBLESHOOTING

1.) Symptom: No power to the AC outlets, “Protection OK” indicator is not lit.

Possible Cause: Either the AC outlet to which your Furman conditioner is connected has no AC voltage present, or there has been 
damage to the unit’s circuitry.

Action Needed: Plug the Furman conditioner into an AC receptacle where a nominal 120 VAC is present.  If the problem persists, the 
internal circuitry may be damaged and the unit will require factory service (see “Service” section below).

2.) Symptom: Extreme Voltage indicator lit.

Possible Cause: Input voltage is above 140 volts 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, and then turn the Furman conditioner on. If the voltages present are well below 114 VAC 
or above 126 VAC, consider installing a Furman voltage regulator.