Furman AR-1215 User manual

AR-Series Features
●AR-1215 and AR-1215J provide nine regulated, conditioned
AC outlets—eight on the rear panel and one on the front
●AR-1215 and AR-1215J input capacity is 15 A; output
capacity is 12 to 15 A
●AR-2306 provides eleven regulated, conditioned AC outlets—
ten on the rear panel and one on the front
●AR-2306 input capacity is 6 A ; output capacity is 5 to 6 A
●Usable range for most equipment is an additional 10% above
and below the ranges shown in the table below
●Extreme overvoltage or undervoltage causes instant shutdown,
protecting equipment
●Extreme Voltage Shutdown indicator LED
●Output In Regulation indicator
●Ten-LED bargraph input voltmeter
●Fast-acting user-accessible circuit breaker protects against
overload or shorts
●Very low stray magnetic field leakage
●On/off breaker switch
●Output voltage selector switch (AR-1215J and AR-2306 only)
●Compact, lightweight unit weighs only 12 lbs. (5.5 kg)
Nominal output voltages vs. input “In-regulation” ranges:
AC Line Voltage Regulator
MODELS AR-1215, AR-1215J, AR-2306
Instruction Sheet
960039-1517
Furman Sound, Inc.
1997 South McDowell Blvd.
Petaluma, California 94954-6919 USA
Phone: [phone] • Fax: [phone]
www.furmansound.com
E-mail: [email protected]
Safety Information
To obtain best results from your Furman AR-1215 or AR-2306, please be
sure to read this manual carefully.
WARNING: To reduce the risk of electrical shock, do not expose this
equipment to rain or moisture. Dangerous high voltages are present
inside the enclosure. Do not remove the covers. There are no user
serviceable parts inside. Refer servicing to qualified personnel only.
The lightning flash with arrowhead symbol, within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated dangerous voltage within the
product’s enclosure that may be of sufficient magnitude to
constitute a risk of electric shock.
Important Safety Instructions
Please Read Prior to Installation
1. Please read and observe all of the safety and operating instructions
before the AR-1215 or AR-2306 is operated. Retain these instructions for
future reference.
2. The AR-1215 or AR-2306 should not be used near water — for
example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet
basement, near a swimming pool, etc.
3. Do not place the AR-1215 or AR-2306 near heat sources such as
radiators, heat registers, stoves, or other appliances that produce heat.
4. Route the power cord and other cables so that they are not likely
to be walked on, tripped over, or stressed. Pay particular attention to
condition of cords and cables at plugs, and the point where they exit from
the AR-1215 or AR-2306. To prevent risk of fire or injury, damaged cords
and cables should be replaced immediately.
5. Clean the AR-1215 or AR-2306 with a damp cloth only. Do not use
solvents or abrasive cleaners. Never pour any liquid on or into the unit.
6. When left unused for a long period of time, the power cord of the
AR-1215 or AR-2306 should be unplugged from the outlet.
7. The AR-1215 or AR-2306 should be serviced by qualified service
personnel when:
a. The power supply cord or the plug has been frayed, kinked, or cut.
b. Objects have fallen or liquid has spilled into the unit.
c. The AR-1215 or AR-2306 has been exposed to rain or other
moisture.
d. TheAR-1215 or AR-2306 does not appear to operate normally
or exhibits a marked change in performance.
e. The AR-1215 or AR-2306 has been dropped, or the enclosure
damaged.
8. The AR-1215 or AR-2306 requires that a safety ground be present for
proper operation. Any attempt to operate the AR-1215 or AR-2306
without a safety ground is considered improper operation and could
invalidate the warranty.
9. There are no user serviceable parts in the AR-1215 or AR-2306. Refer
servicing to qualified service personnel only.
Before using your Voltage Regulator, be sure that if there is an
output voltage switch on the rear panel (just above the cord, on Mod-
elsAR-1215J andAR-2306 only), it is correctly set for theAC voltage
required by your equipment. Each item of equipment that you intend
to power with the Voltage Regulator should have its required voltage
indicated on it, usually on the rear near the cord. If in doubt, consult
your dealer.
NOTE: The three models in the AR-Series differ in their nominal
AC output voltages. Model AR-1215 produces 120 VAC. Model
AR-1215J produces either 100 or 120 VAC. Model AR-2306
produces either 220, 230, or 240 VAC.
Where differences exist between models, information applicable to
theAR-2306 is shown in the text of this manual in brackets [ ].
FIRST: Select the Correct Voltage!
±5V AR-1215 120 97 to 141
±5V AR-1215J 120 97 to 141
±4V AR-1215J 100 80 to 122
±10V AR-2306 220 174 to 264
±10V AR-2306 230 181 to 276
±10V AR-2306 240 190 to 288
Output Model Voltage In-Regulation
Accuracy Setting Range
4-9926

General Information
Congratulations on your purchase of a Furman AR-1215,
AR-1215J, or AR-2306 AC Line Voltage Regulator. TheAR-Series
regulators are designed specifically for any audio, video, or
computer rackmount system requiring clean, filtered, and
regulated AC power for optimum operation.
Furman Voltage Regulators are intended to protect sensitive
electronic equipment from problems caused by AC line voltage
irregularities—brownoutsorovervoltagesthatcan cause audio tonal
changes, digital equipment malfunction (such as loss of MIDI
programs or other data), or, in extreme cases, permanent
damage. They accept input voltages over a wideAC voltage range
(see table on page 1) and convert them to a steady, stable output
at the desired standard voltage, plus or minus five [ten] volts.
Voltages approximately ±10% beyond that range may be
converted to usable levels, depending on the requirements of the
equipment. See graphs on the back page.
The AR-1215 has eight [AR-2306 has ten IEC-320]
convenience outlets on the rear panel, and one on the front panel.
All are functionally interchangeable. The outlets are regulated,
spike-suppressed, and filtered against RFI with a 3-pole filter,
making the unit a full-function power conditioner. TheAR-1215 has
no controls except an on-off breaker switch. (The AR-1215J and
AR-2306 also have an output voltage selector switch.)
Note: The AR-1215 and AR-2306 are for use with
AC voltage
only
. DC voltages should never be applied to them. Also, they do
not change or regulate line frequency. The output frequency will
always be the same as the incoming frequency.
Maximum and Minimum Load
The AR-1215 and AR-1215J can handle loads totalling up
to 15 amperes as long as the input voltage is equal to or above 124
volts (or 104 volts if using AR-1215J set to 100 volt output). For
voltages below that level, its capacity must be derated at
approximately113milliamperes per volt. (See graphs on back page.)
As a practical matter, therefore, to cope successfully with
worst-case brownout conditions, you should plan your total load so
that it does not exceed 12 amps, or 1400 watts. Please note that
this refers to the aggregate power requirement of all
equipment plugged into the Voltage Regulator, not to each
individual item.
The AR-2306 can handle loads totalling up to 6 amperes as
long as the input voltage is equal to or above the selected output
voltage. For voltages below that level, its capacity must be
derated at approximately 23 milliamperes per volt. (Again, please
see graphs on back page.)As a practical matter, therefore, to cope
successfully with worst-case brownout conditions, you should plan
your total load so that it does not exceed 5 amps, or 1100 watts.
Please note that this refers to the aggregate power requirement of
all equipment plugged into the Voltage Regulator, not to each
individual item.
NOTE: While there is no minimum load requirement for the
AR-1215 or AR-2306, you may experience an audible mechanical
hum coming directly from the unit when the POWER switch is on
with nothing plugged in. This effect will disappear as soon as you
plug in any equipment drawing 40 to 50 watts total.
Extreme Voltage Protection
The AR-Series includes special circuitry to sense over- and
under-voltages and positively shut down the output before
possible damage is done. See the Specifications on the back page
for the exact voltages at which shutdown occurs. When the input
voltage exceeds the limit, the power will cut off. It will come back on
automatically when the overvoltage is removed as long as the
voltage has not exceeded 300V [all models]. The red LED
labelled EXTREME VOLTAGE SHUTDOWN indicates the
shutdown condition. The output is also shut down for extremely low
input voltages.
To provide protection against a catastrophic error in AC mains
wiring,dangerously high voltages (those overapproximately 300V)
will cause an internal fuse to blow, but equipment plugged into the
Voltage Regulator will not be damaged.
Fuses and Circuit Breakers
There is one fuse and one circuit breaker in the
AR-Series.In the event that theunit appears to be completelydead
(neitherthe Power switch nor anyLED’slight up), unplug the power
cord and the load and check the breaker. If the circuit breaker is
tripped, a white button will pop up. Push it back in to reset it. The
purposes of these circuit protection devices are:
1. A fast-blow 15 amp [6 amp] circuit breaker is accessible
at the rear panel without removing the unit from the rack.
Definitions
VOLTAGE REGULATION: The AC line voltage is a number indicating
the nominal electrical potential that has been adopted in a region for powering
electrical equipment of all kinds. In most of North America it is 117 volts AC; in
Japan, 100 volts; and in many other countries 220, 230, or 240 volts. The actual
voltage can fall below or rise above this nominal level due to brownouts, power
cutbacks, use of substandard wiring, and other causes. These deviations can cause
poor performance or malfunction. A regulator is a device which, through use of a
transformer, corrects the voltage deviation by stepping it up or down so that it is as
close as possible to the nominal level.
SPIKE: A pulse of energy on the power line. Spikes can have voltages as
high as 6000 volts. Though they are usually of very short duration, the energy they
contain can be considerable, enough to damage sensitive solid-state components
in audio and computer equipment. Spikes can also foul switch contacts and
degrade wiring insulation. They are an unavoidable component of electric power.
They are caused unpredictably by electric motors switching on or off (on the
premises or outside), utility company maintenance operations, nearby lightning
strikes, and other factors. Spikes (also called surges or transients) are absorbed
by special components called MOV’s in the AR-series to provide safe voltage
levels to protect your equipment.
RFI/EMI INTERFERENCE: Noise from RFI (Radio Frequency Interference)
or EMI (Electro Magnetic Interference) involves lower voltages and less energy
than is found in spikes, but it is continuous rather than transient in nature. It is not
likely to cause physical damage, but it can certainly be annoying, producing static
in audio circuits, “snow” on video screens, or garbled data in computers. Noise can
be introduced into AC lines by nearby radio transmitters, certain kinds of lighting,
electric motors, and others. Because noise occurs at higher frequencies than the
50 or 60 Hz AC line, it can be effectively reduced through use of low-pass filtering.
NOTE: The three models in the AR-Series differ in their nominal
AC output voltages. Model AR-1215 produces 120 VAC: AR-1215J
produces either 100 or 120 VAC; and AR-2306 produces either
220, 230, or 240 VAC.
Where differences exist between models, information applicable
to the AR-2306 is shown in brackets [ ] in the instructions.
AR-1215 front view
AR-1215J rear view (the switch above the AC cord is not present in
the AR-1215)
AR-2306 rear view
6
A
M
P
220
OUTPUT VOLTAGE
230 240
CIRCUIT
BREAKER
N’OUVREZ PAS—RISQUE
DE CHOC ELECTRIQUE
174-288 VAC 6 A
W
A
R
N
I
N
G
FOR CONTINUED
PROTECTION AGAINST
FIRE HAZARD REPLACE
WITH SAME TYPE AND
RATING OF FUSE
15 AMP
100 V 120V
75-140 VAC
REGULATED
OUTPUTS
120 VAC
15 AMPS
ATTENTION:
REMPLACER LE FUSIBLE
AVEC MEME TYPE
DISCONNECT SUPPLY
BEFORE CHANGING FUSE.
COUPER L'ALIMENTATION
AVANT DE CHANGER LE FUSIBLE
15
A
M
P
A.C. LINE VOLTAGE
REGULATOR
MODEL AR-1215
INPUT VOLTAGE
IN
REGULATION
EXTREME
VOLTAGE
SHUTDOWN
REGULATED OUTLET POWER
ON
OFF
75-98
110 115 120 125 131 137 140-150105101
15A 120V 50-60HZ

This breaker will trip if the unit’s 15 amp [6 amp] capacity is
exceeded at any time.
2. A fast-blow 1/4 amp fuse is located inside the unit.
This fuse will blow if the unit has been connected to a voltage that
is above the range of the Extreme Voltage Shutdown
circuitry (approximately 200 VAC for AR-1215 and AR-1215J;
approximately 400 VAC for AR-2306). To replace it, the unit must
be completely disconnected from all power and removed from its
rack. The six hex head screws and one Allen head screw holding
the top cover must be removed. The internal fuse is located in a
holder near where the AC cord enters the unit. Replace the fuse
only with the exact same type.
Input Voltage Monitoring
The row of ten LED’s at the left of the front panel make up a
meter that indicates INPUT VOLTAGE. Only one LED will light
up at a time. There are two red LED’s at the endpoints. When
lit, they indicate that the input voltage may be above
or below the point where it can be restored to the selected
nominal output voltage (though it may still be restored to
a usable level) but is not high or low enough to cause an
extreme voltage shutdown.
The AR-1215J and AR-2306, which have switchable
outputvoltages,alsohavemultiplescalesontheInputVoltagemeter
corresponding to the selected voltage. On the AR-2306, there are
three scales, with the top for 220V, the middle for 230V, and the
bottom for 240V.
Output Voltage Monitoring
A green LED labelled OUTPUT IN REGULATION indicates
proper function (i.e., that the output voltage is within ±5V of the
selected output voltage). Your equipment will always work
normallywhen this lightis on, and often willwork satisfactorily even
when it is off.
If you wish to monitor your AR-1215’s output voltage
more precisely, you may want to use a Furman PL-PLUS Power
Conditioner and Light Module in conjunction with it [use model
PL-PLUS-E with model AR-2306].
The PL-PLUS is the perfect complement to a Furman Voltage
Regulator to assist in rack power distribution. It offers a 20-LED
bargraph line voltage meter to monitor the incoming line (the
Voltage Regulator output), twin slide-out, swiveling lights with a
dimmer control for equipment illumination, and eight [ten]
additional outlets with their own spike and surge protection and
RFI filtering.
Installation
Because of their toroidal transformer design, Furman Voltage
Regulators may be positioned near most other equipment
without fear that the other equipment will be disrupted by leakage
of a strong 50/60 Hz magnetic field. Nevertheless, suggested rack
locations would be either at the top or bottom.
As with any rackmount equipment, be sure to use 10-32
machine screws for mounting in the rack’s tapped holes (this is not
a metric size). In particular, beware of 10-24 screws, which may fit
if forced but which will strip the threads. To avoid marring the front
panel finish, use plastic washers under the screw heads.
Design
The AR-Series uses a design based on an eight-tap toroidal
autoformer. The toroidal design assures minimal leakage of stray
magnetic fields, and, because of its high efficiency, a
very compact size for its rating. The Voltage Regulator’s circuitry
monitors the incoming line voltage with each cycle, comparing it to
an extremely precise voltage reference, accurate to ±0.15%. If a
voltage fluctuation requires that a different tap be selected, the new
tap is electronically switched exactly at the zero-crossing, to avoid
distorting the AC waveform. If necessary, it can switch taps as
often as once each cycle. Most commercial voltage regulators
usingmultiple-tappedtransformersswitchtapsatuncontrolledtimes,
thereby creating voltage spikes and clicks that can
leak into the audio! Hysteresis in the switching circuits avoids
“chatter” or unnecessary switching back and forth between
adjacent taps. And unlike those voltage regulators that employ
ferro-resonant transformers, Furman Voltage Regulators are not
sensitive to small errors in line frequency, making them ideal for
use with generators.
Three Year Limited Warranty
The Furman AR-1215, AR-1215J, and AR-2306 are warranted
against failures due to defective parts or faulty workmanship for a
period of three years after delivery to the original owner. During this
period, Furman will make any necessary repairs without charge for
parts or labor. Shipping charges to the factory or
repairstationmust be prepaid bytheowner;return shipping charges
(via UPS Ground) will be paid by Furman.
This warranty applies only to the original owner and is not
transferable. Also, it does not apply to repairs done other than by
the Furman factory or Authorized Repair Stations. This warranty
may be cancelled by Furman at its sole discretion if the AR-1215,
AR-1215J, or AR-2306 unit has been subjected to physical abuse
or has been modified in any way without written authorization from
Furman. Furman’s liability under this warranty is limited to repair or
replacement of the defective unit.
Furman will not be responsible for incidental or
consequential damages resulting from the use or misuse of its
products. Some states do not allow the exclusion of incidental or
consequential damages, so the above limitations may not apply to
you. This warranty gives you specific legal rights, and you may also
have other rights which vary from state to state. Warranty claims
should be accompanied by a copy of the original purchase invoice
showing the purchase date (if a Warranty Registration Card was
mailed in at the time of purchase, this is not necessary). Before
returning any equipment for repair, please read the important
information on service, which follows.
Service
Before returning any equipment for repair, please be sure that it
is adequately packed and cushioned against damage in
shipment, and that it is insured. We suggest that you save the
original packaging and use it to ship the product for servicing.Also,
please enclose a note giving your name, address, phone number
and a description of the problem.
NOTE: All equipment being returned for repair must
have a Return Authorization (RA) Number. To get an RA Number,
please call the Furman Service Department, [phone],
ext. 40, between 8 a.m. and 5 p.m. U.S. Pacific Time, or fax to
[phone]. Please display your RA Number prominently on
the front of all packages.

Output Current Rating: AR-1215: 15 amperes for input voltages
of 124V (104V for AR-1215J in 100V
mode) or higher; derate at 113 mAper
volt to a minimum of 12.3A.
AR-2306: 6 amperes for input voltages of
228V/238V/248V (depending on Output
Voltage switch setting) or higher; derate
at 23 mA per volt to a minimum of 4.9A.
“In Regulation” Ranges: AR-1215 (and AR-1215J set to 120V):
provides regulation ±5V from 97V to
141V.
AR-1215J (set to 100V): provides
regulation ±4V from 82V to 115V.
AR-2306: provides regulation ±10V in the
following ranges: 174-264V (220 mode),
181-276V (230 mode), 190-288V (240
mode).
Shutdown Range: AR-1215 (and AR-1215J set to 120V):
Below 75V or above 150V.
AR-1215J: (set at 100V): Below 65V or
above 135V.
AR-2306: Below 146V or above 279V
(220 mode); Below 152V or above 287V
(230 mode), Below 158V or above 300V
(240 mode).
Voltmeter Accuracy: AR-1215 (and AR-1215J set to 120V):
±5V.
AR-1215J (set to 100V) : ±4V.
AR-2306: ±10V.
Spike Protection Modes: Line to neutral, neutral to ground, line to
ground.
Spike Clamping Voltage: AR-1215/AR-1215J: Initial turn-on at
200V; TVSS rating of 400 volts peak at
500 A, L-N, N-G, L-G (tested to UL-1449).
AR-2306: Initial turn-on at 390 volts peak
L-N; 680 volts peak N-G, L-G.
Response time: 1 nanosecond.
Maximum surge current: 6,500 amps.
Maximum spike energy: AR-1215/AR-1215J: 80 joules per node;
240 joules total.
AR-2306: 130 joules L-N, 160 joules N-G,
L-G, 450 joules total.
Noise attenuation: Transverse and common modes: 20 dB at
200 kHz, rising to >40 dB, 1 to 100 MHz.
Dimensions: 1.75" H x 19" W x 8.5" D.
Weight: 12 lbs. (5.5 kg)
The Furman AR-1215, AR-1215J and AR-2306 are made in the U.S.A.
AR-1215, AR-2306 SPECIFICATIONS
Other Furman Voltage Regulators
70 80 90 100 110 120 130 140 150 160
12
13
14
15
16
Input Voltage
Available Output Current
AR-1215 Output Current Capability
AR-1220, 20 amps at 120 VAC
AR-PRO, 30 amps at 120 VAC, worldwide use
AR-2330, 30 amps at 220/230/240 VAC
70 80 90 100 110 120 130 140 15060
12
13
14
15
16
Input Voltage
Available Output Current
AR-1215J Output Current Capability
70 80 90 100 110 120 130 140 15060
4.5
5
5.5
6
6.5
Input Voltage
Available Output Current
AR-2306 Output Current Capability
Low Voltage Shutdown
Output Voltage
70 80 90 100 110 120 130 140 150 160
80
90
100
110
120
130
140
Input Voltage
Functional range
Regulation Range
High Voltage Shutdown
AR-1215
pg
Output Voltage
70 80 90 100 110 120 130 140 15060
80
90
100
110
120
130
70
Input Voltage
AR-1215J (Set to 100V)
Functional Range
Regulation Range
Low Voltage Shutdown
High Voltage Shutdown
Output Voltage
140 160 180 200 220 240 260 280 300 320
160
180
200
220
240
260
280
Input Voltage
AR-2306 (Set to 240V)
Functional Range
Regulation Range
Low Voltage Shutdown
High Voltage Shutdown
Output Voltage and Current vs. Input Voltage for All Models
AR-1230, 30 amps at 120 VAC
AR-2330D for Video Projectors, 30 amps at 220/230/240 VAC