Furman AR-PRO User manual

AR SERIES
AR-PRO
AC LINE VOLTAGE REGULATOR

AR-PRO – AC LINE VOLTAGE REGULATOR
- 2 -
Congratulations on your purchase of a Furman
AR-PRO AC Line Voltage Regulator. The AR-
PRO is the perfect accessory to any audio,
video, or computer rack-mount system requir-
ing clean, fi ltered, and regulated AC power for
optimum operation. It is the ultimate high
current regulating product for audio, video,
computer, and broadcast professionals.
READ THIS FIRST!
1. Carefully inspect your AR-PRO for signs of damage
that may have occurred in shipping. Any such dam-
age is the responsibility of the carrier. If necessary,
fi le a claim directly with them.
2. The AR-PRO is a complex electronic instrument with
various wiring options. You cannot simply “plug in and
go.” The supply cable must be adequate for your in-
stallation needs. Take the time to read this manual,
especially the sections on Installation and Opera-
tion. If in doubt, obtain the assistance of a licensed
electrician.
3. To insure full protection under the terms of the Lim-
ited Warranty in case your ownership documents
are lost, please fi ll out and return the Warranty
Registration Card immediately. Verify that the serial
number shown on the Warranty Card matches the
serial number on your unit.
G E N E R A L
INFORMATION
FEATURES OF THE AR-PRO
●
Delivers 120 VAC ±4%
anywhere within
capture ranges of 88 to 134 and 170 to
264 volts AC, 50/60 Hz, single phase
●
Extends the usable voltage range for
most equipment to 80 to 267 VAC
●
Input voltmeter bar-graph with 21 LEDs
●
Output ammeter bar-graph with 21 LEDs
indicates low, normal, or high output volt-
age/current
●
Fourteen regulated, conditioned outlets
(2 front, 12 rear)
●
Input capacity 30 amps; output capacity
22.5 to 30 amps
●
Provision for remote turn-on/turn-off;
multiple units may be turned on simultane-
ously or in a delayed sequence
●
Multiple-stage transient (spike) suppres-
sion
●
Multiple-stage RFI fi ltering
●
Low stray magnetic fi eld leakage
●
Compact 3.5” rack-mount unit weighs
only 50 lbs (23 kg)
AR-PRO DESCRIPTION

AR-PRO – AC LINE VOLTAGE REGULATOR
- 3 -
The AR-PRO is intended to protect computer, audio,
video and other electronic equipment from problems
caused by AC line voltage irregularities - sags, brown-
outs or over voltages that can cause sensitive digital
equipment to malfunction, or, in extreme cases, to
sustain damage. It accepts single phase input AC
voltages anywhere within two capture ranges, 88
to 134V (low range) or 170 to 264V (high range) and
converts them to the North American standard 120 volts
(or, on model AR-PRO-J, to 100V). Voltages outside the
ranges may be converted to usable levels, depending
on how far out of range they are and what is considered
usable. For example,
any
voltage from 80 to 267 will be
converted to 120V ±4%. See Figure 1 below.
The AR-PRO can handle loads totaling up to 30
amperes as long as the input voltage is equal to or
above 120 volts (low range) or 240 volts (high range).
For voltages below those levels, its capacity must be
derated at approximately one-quarter ampere per volt.
See Figure 2 below.
In live performance situations, where each act requires
a special AC confi guration, accidental connection to
incorrect AC voltages occurs surprisingly often with
disastrous consequences.
Because of its dual range capability, the AR-PRO can
protect against a catastrophic error in AC mains wir-
ing. This feature also makes the AR-PRO ideal as a
component of a power distribution scheme suitable
for worldwide use, accommodating national voltages
of 100, 120, 220, 240, or others, with equal ease and
without the need for readjustment.
The AR-PRO uses a design based on a 25-tap toroidal
autotransformer. The toroidal design assures minimal
leakage of stray magnetic fi elds in a highly effi cient,
compact package. The AR-PRO’s circuitry monitors
the incoming line voltage with each cycle. If a volt-
age change requires that a different tap be selected,
the new tap is electronically switched in precisely at
the zero-crossing, to avoid distorting the AC waveform.
If necessary, the AR-PRO can switch taps as often as
once each cycle. Most commercial voltage regulators
using multiple-tapped transformers switch taps with
relays at uncontrolled times, thereby
creating
voltage
spikes! And unlike voltage regulators that employ Ferro
120
122
124
126
128
130
132
114
116
118
110
112
Output Voltage
-No Output-
208
Input Voltage
108 112 116 12010492 96 100 124 128 132 136 142888480 160 176 184 192 200 216 224 232240 248256264
TWO VOLTS PER DIVISION FOUR VOLTS PER DIVISION
168
Low Range�
Input Voltage
High Range�
Input Voltage
208
Input Voltage
108 112 116 12010492 96 100 124 128 132 136 142 888480 160 176 184 192 200 216 224 232 240 248256264
TWO VOLTS PER DIVISION FOUR VOLTS PER DIVISION
168
Low Range�
Input Voltage
High Range�
Input Voltage
29
30
27
28
25
26
Output Current
24
23
22
21
20
Functional Range
Regulation Range Regulation Range
Functional Range
FIGURE 1: OUTPUT VOLTAGE VS. INPUT VOLTAGE
FIGURE 2: AVAILABLE OUTPUT CURRENT VS. INPUT VOLTAGE
AR-PRO GRAPHS

AR-PRO – AC LINE VOLTAGE REGULATOR
- 4 -
resonant transformers, the AR-PRO is not sensitive to
small errors in line frequency, making it ideal for use
with generators.
The AR-PRO has twelve convenience outlets on its
rear panel, and two on the front panel. All outlets are
regulated, spike-suppressed, and fi ltered against
RFI with a 3-pole fi lter. There are no controls except
a master circuit breaker, which serves as an on-off
switch. Two bar-graph meters, each comprised of 21
LEDs indicate input voltage and output current. Three
other LEDs indicate proper function (i.e., the output
voltage is either within ±5% of desired output, or above
or below that range). One or more units may be turned
on remotely, either simultaneously or in sequence, by
switching an internally-derived DC control line.
The AR-PRO is housed in a double space (3.5” high
and 17” deep) rack-mount chassis, and weighs only
50 lbs (23 kg). It is made of extremely rugged heavy-
gauge black powder coat steel. Adjustable rear rack
ears (RPM-2, sold separately) allow it to be secured
in both front and rear. It comes equipped with a
125/250V-30A twist-lock input connector and a mating
female cable-mount connector, ready to terminate your
own custom supply cable.
To precisely monitor the AR-PRO’s output voltage,
you may want to use one or more Furman
PL-Series
Power Conditioner and Light Modules.
Furman’s
PL-Series is the perfect complement to the AR-PRO
for rack power distribution. Voltage meters monitor the
incoming line (the AR-PRO’s output), twin slide-out
lights with a dimmer control illuminate your equipment,
and eight additional outlets provide spike/surge protec-
tion and RFI fi ltering.
AR-PRO LIMITATIONS
AC power is, to some extent, unpredictable. The
available voltage may vary from place to place and
from moment to moment. The waveform may not be
a perfect sine wave, and high or low frequency noise
may be present. AC power also varies from country to
country in terms of voltage and frequency.
The AR-PRO is intended to reduce to the greatest
extent possible, the impact of these irregularities. How-
ever, you should be aware that there are certain things
it cannot do. These include, but are not limited to:
1. Protecting against direct lightning strikes.
2. Protecting from complete loss of power (blackouts).
3. Performing frequency conversion to 60 Hz.
4. Isolating ungrounded equipment.
5. Handling multiple-phase power.
INSTALLATION
SUPPLY CABLE WIRING
Because of the myriad differences in electrical code
requirements around the world, plus the varying cable
length needs in individual installations, it is not pos-
sible to include a complete supply cable with your
AR-PRO. A cable-mount connector that mates with the
AR-PRO’s twist-lock connector is supplied, but it is up
to the user to connect it to a cable with the appropriate
gauge, number of conductors, length, and source-end
connector. This section is intended to assist in deter-
mining the kind of cable to use, and in attaching it to
the twist-lock connector.
SELECTING THE CABLE
For nominal 120 VAC operation, 3 conductor cable of
at least 10 AWG*
(.101”/2.56mm diameter) should be
used, depending on distance from the power source.
For nominal 220-240 VAC operation, 3 conductor
cable of
at least 14 AWG
(.064”/1.62mm diameter)
should be used, depending on distance from the pow-
er source.
Rubber-jacketed cable is highly recommended for best
fl exibility and abrasion resistance. It is permissible to
use 4 conductor cable, but it is not necessary to do so
and is not recommended.
* American Wire Gauge

AR-PRO – AC LINE VOLTAGE REGULATOR
- 5 -
Refer to the following diagrams for wiring the twist-lock
connector:
All wiring confi gurations except North America
220-240V:
Wire hot lead to X (black in North America; black,
brown, or black with white stripes in Europe). Wire the
neutral to W (white in North America; blue in Europe).
Wire the equipment ground to G (green in North Amer-
ica; green with yellow stripes in Europe).
North America 220-240V:
Wire the two hot leads to
X and Y (black, and white or red), and the equipment
ground to G (green). Since the USA 220-240 doesn’t
use a neutral, you don’t need to wire it.
However,
because of the lack of a neutral, it is essential that
all equipment powered by an AR-PRO be properly
grounded! Never cut off the power cord ground pin
or use a “cheater” adaptor on any of your equip-
ment. Output neutral will have voltage.
EFFECTS OF CABLE LENGTH
When dealing with high currents such as those handled
by the AR-PRO, the supply cable itself must be con-
sidered part of the load. As such, the length, gauge,
and temperature rating of the insulation must be taken
into account. The minimum wire gauges we suggest
may not be large enough when the cable run is longer
than about 20 feet (7 meters). The smaller the cable
conductors are, the more fl uctuation of input voltage
there will be. This is due to the greater voltage drop.
For example, the recommended minimums will result
in a drop of approximately 1.0 volt for each 30 feet (10
meters) of cable.
Increasing the cable by one AWG size will reduce the
drop to 1 volt per 45 feet (15 meters). Bigger is defi -
nitely better in this case.
SOURCE-END CONNECTOR
The connector used at the source end should be rated at
least 250V-15A for high range operation, or 120V-30A
for low range operation. If in doubt, consult a licensed
electrician when installing your AR-PRO.
RACK MOUNTING
Because its toroidal transformer design has minimal
magnetic leakage, the AR-PRO may be successfully
installed in the same rack as other equipment. Though
small for a device capable of handling 30 amps, this
leakage is not zero. It is wise to avoid positioning the
AR-PRO immediately adjacent to equipment which
handles low-level signals, such as preamps, mike
mixers, etc. Power amps or other high level devices
would make better “rack neighbors.” If excessive hum
or buzz is present in the audio signal, you may be able
to reduce or eliminate it by leaving more empty spaces
next to the AR-PRO.
Suggested rack locations would be near the top or bot-
tom, with the bottom preferred due to the AR-PRO’s
weight. Because the AR-PRO generates considerable
heat, leaving at least one empty space above and one
below is recommended to aid in convective cooling. As
with any rack-mount equipment, be sure to use 10-
32 machine screws for mounting in the rack’s tapped
holes. In particular, beware of 10-24 screws, which may
fi t, if forced, but will strip the threads. To avoid marring
the front panel fi nish, use plastic washers under the
screw heads.
Adjustable rear rack ears (RPM-2, sold separately)
permit the most secure rack installation. It is essential
to use them when mounting the AR-PRO in any rack
position other than the bottom. If your rack has no
rear rack rails, you may wish to install them or at least
substitute securely mounted blocks of wood.
The rear rack ears can be attached to the wood blocks
with wood screws. They can be adjusted to any rail-
to-rail spacing from 17 to 18.5 inches by loosening the
three adjusting screws on each side, sliding the ears to
a new position, and retightening them.
125/250V
.
30A.
NEMA
L14-30
G
W
X
Y
(EQUIPMENT�
GROUND)
(NEUTRAL)
(HOT LEAD)
(USA 220-240 ONL
Y)�
FRONT VIEW
REAR VIEW
G
W
X
Y

AR-PRO – AC LINE VOLTAGE REGULATOR
- 6 -
OPERATION
FRONT PANEL FEATURES
INPUT VOLTMETER: Measures input voltage in ei-
ther of two ranges. The appropriate range is selected
automatically and is indicated by an LED at the end
of the scale. All LEDs are green except those at the
extreme high and low ends, which are yellow. (Model
AR-PRO-J has a 120V/100V switch on the rear pan-
el. When it is set to 100V, use the blue scale for the
low range.)
OUTPUT AMMETER: Measures output current when
it is between 5 and 30 amps. An additional “Overload”
LED indicates current of 30A or more (if an overload
continues for more than a few seconds, the circuit
breaker will trip). The grey bar indicates a recommended
operating range. The LEDs are green within this range, and
become fi rst yellow and then red when it is exceeded.
OUTPUT VOLTAGE INDICATORS: This display in-
dicates whether the output voltage is within 5% of
nominal 120V (or for model AR-PRO-J, either 120V or
100V depending on the rear panel switch setting). It
will light green when IN REGULATION, & yellow if 5%
OVER or 5% UNDER.
The yellow lights come on only when the input voltage
is extremely far from normal. However, that doesn’t
necessarily mean your equipment won’t work (even
10% below 120V is 108V, which is still adequate for
most 120V equipment.)
INPUT SELECT: The Input Select Switch is the only
front panel control. Its function is to select the correct
hot and neutral wires in the supply cable, consistent
with cable wiring in conformance with USA electrical
codes. This switch is necessary because the United
States (and other North American countries) use a dif-
ferent AC wiring scheme.
The upper position is for any
situation in which the AR-PRO is
fed either 120V or 100V, or 220V
to 240V in a non-North American
country. This corresponds to a
two-wire scheme (hot-neutral).
The lower position should be
selected only when running the
AR-PRO off 220V/240V
within
the USA (or North America)
.
This corresponds to a three-wire
scheme (hot-neutral-hot), even
if the neutral wire is omitted from
the supply cable
.
Note that this switch only selects the active pins on the
four-pin twist-lock supply connector. It does not select
the voltage range (that is done automatically). Therefore,
if the switch is inadvertently set to the wrong position,
the AR-PRO will simply not receive power and will not
operate. No damage will be done.
(Operation will be
restored when the switch is reset correctly.)
INPUT SELECT
100/200
OR NON-USA
220/240 VAC
USA 220/240 VAC
Voltage and Current
Over/Under Voltage
and “In Regulation”
Indicators
AC Power Switch and
30 Amp Magnetic Circuit
Breaker
Current Breaker for off-shore
220-240 V operation
Front Panel Regulated Outlets

AR-PRO – AC LINE VOLTAGE REGULATOR
- 7 -
HIGH RANGE BREAKER: The AR-PRO’s basic cur-
rent rating is 30 amps output at 120 VAC. The current
at the input (where the circuit breakers are located) will
be the same as the output only if the input voltage is
also 120V (low range). If the AR-PRO is powered from
a 220/240 volt source (high range), the input current
will be approximately half, or 15 amps, to produce
the rated 120V, 30A at the output. Therefore, safety
considerations require a separate 15A breaker which
is active only when a high range (170 volts or higher)
supply voltage is used. This breaker trips by popping
out. If it trips, decrease the load on the AR-PRO and
push it in to reset.
POWER SWITCH: This is the AR-PRO’s main on-off
switch. It is actually a 30 ampere magnetic-trip circuit
breaker rated for use as a switch. If the current drawn
through the AR-PRO exceeds 30 amps at any time,
the breaker will trip by snapping into the off position.
If this happens, decrease the load on the AR-PRO
and turn it back on.
After turning the Power switch on, there is a delay of
approximately 3 seconds before power is available at
the AR-PRO’s output.
REAR PANEL FEATURES
INPUT CONNECTOR: This 4-pin twist-lock connec-
tor is rated at 30 amperes for 120/240 volt service.
See the Installation section for information on wiring a
supply cable. 120V/100V SWITCH (Model AR-PRO-J
only): The AR-PRO-J can supply 120 VAC for use with
equipment intended for North America, or 100 VAC
for equipment intended for use in Japan and other
countries. Choose the setting that matches the type of
equipment you plan to power with the AR-PRO-J.
TERMINAL STRIP FOR REMOTE OPERATION: Con-
nection to this screw-terminal strip allows for a single
AR-PRO to be turned on remotely, or for multiple
AR-PROs to be turned on remotely, either simultane-
ously or in a delayed sequence. A built-in delay of
approximately half a second is available to stagger
the potentially large inrush currents that occur when
certain types of equipment are powered up simulta-
neously. Using such a delayed sequence can avoid
blowing a house breaker when all the AR-PROs are
powered from the same circuit. See the section on
Remote/Delayed Operation later in this manual for
details. Note: No connections or jumpers are needed
for normal AR-PRO operation.
REGULATED OUTLETS: There are 14 regulated out-
lets on the AR-PRO, two in front and the balance in the
rear. While the combined load formed by all equipment
plugged into all 14 outlets may not exceed 30 amps,
the load on any one individual outlet may not exceed
15 amps, which is the maximum permissible for the
type of connector used.
30 A Inlet
(12) Switched Regulated Outlets
Remote Turn On Barrier
Output Voltage Selector Switch (J Version Only)

AR-PRO – AC LINE VOLTAGE REGULATOR
- 8 -
AR-PRO
Q U E S T I O N S
AND
ANSWERS
Q. What happens if the Input Select switch is set to the
wrong position and power is applied to the AR-PRO?
A. In most cases, power will not reach the AR-PRO’s
input and it will appear to be dead. Normal operation
will resume as soon as the switch is restored to the
correct position. The only exception to this rule would
be in the event that a 4-wire power cable is used and is
connected to
a USA source of 240V. In that case, the
wrong setting will result in the AR-PRO running off half
the line (120V-i. e.,
the low range).
The AR-PRO will
function normally, but there is a minor disadvantage to
running this way. See the next question.
In no case will an incorrect setting of the Input Select
switch result in damage.
Q. If both 120V and 240V are available, which is better
to use?
A. 240V. Since an output of 120V at 30 amps requires
only 15 amps in the supply cable at 240V, you can use
a lighter gauge of wire in the supply cable (see section
on Installation for details). Also, the smaller current
necessary for high range (240V) operation allows all
the internal components of the AR-PRO to run cooler
and therefore may prolong its service life.
Q. Will the AR-PRO protect my equipment from light-
ning strikes?
A. Maybe. If lightning strikes a distant power line and
causes a relatively small disturbance to reach your
location, the spike suppressors in the AR-PRO will
absorb the excess voltage invisibly and harmlessly.
However, if lightning strikes the actual building where
the AR-PRO is installed (or somewhere very nearby),
equipment damage may be unavoidable due to the ex-
tremely high voltage and current present. If this does
occur, most likely damage to the AR-PRO itself will be
limited to the spike suppression components (called
varistors or MOVs), which should be a relatively minor
repair.
Any
AR-PRO known to have taken
a direct lightning
hit should be checked by a qualifi ed technician or the
Furman factory to determine whether the MOVs need
replacement. If they are damaged, the AR-PRO may
appear to be working normally, but its vital spike-sup-
pression capability will be eliminated.
You should not rely on the AR-PRO to protect against
a direct lightning hit. That is not its purpose, and
damage caused by lightning is specifi cally excluded
from its warranty. Your fi rst line of defense against
lightning should be a lightning arrestor installed on
your building’s electrical service entrance. If your
building does not have one, contact your local power
company or an electrical contractor to have one installed.
Q. I am running a rack of power amps through the AR-
PRO. Can I turn them all on at once with the AR-PRO’s
Power switch?
A. We recommend against this because of the high
inrush currents which power amps consume to charge
their large power supply capacitors when fi rst turned
on. This could cause the AR-PRO’s circuit breaker to
trip even though the steady-state load is well within
its rating. To avoid this, turn the power amps on one
at a time with their own on-off switches, waiting a few
seconds between each. (Furman’s
PS-8R / PS-PRO
Power Sequencers
will do this for you automatically).
It is not necessary to do this with most other types of
equipment. However, the general rule is that the func-
tion of the AR-PRO’s circuit breaker is no different from
any other circuit breaker. If turning on any combina-
tion of equipment simultaneously without the AR-PRO
causes a house breaker to trip, adding the AR-PRO
will not decrease the likelihood of this.
Q. My steady-state current is well below the AR-PRO’s
30 amp limit. But when I begin playing music, the cur-
rent jumps up and the breaker trips. Why?
A. The current used by many kinds of audio equip-
ment (especially power amps) increases with musical
peaks. The AR-PRO’s ammeter may actually bounce
up and down with the music like a VU meter. There is
an important difference, however. When a VU meter
goes to the top of its scale, an overload light may go
on and you may hear some distortion. But when you
try to draw too much current through the AR-PRO, its
circuit breaker will trip and shut all your equipment off
- a much more serious and inconvenient occurrence.
In fact, this may happen below the top of the ammeter
scale if the input voltage is lower than 120. Therefore,
be conservative. Do not allow the ammeter reading
to exceed more than two-thirds of maximum on the
highest peaks. If it does, unplug some equipment and

AR-PRO – AC LINE VOLTAGE REGULATOR
- 9 -
power it through a different circuit.
Q. Why is there a 3 second delay before power goes on?
A. This built-in delay allows the internal sensing cir-
cuitry to stabilize and provides a means of turning on a
group of AR-PROs in a delayed sequence.
Q. I connected the AR-PRO through a Ground Fault
Interrupt (GFI), and it keeps tripping. What can I do?
A. Some European countries are using GFI circuits
that will disconnect the load on sensing approximately
3 mA of ground current. This relatively small current
can be created by the fi lters whose purpose is to clean
up the power by shunting noise and interference to
ground. In doing so, these fi lters can create the very
leakage currents that cause the GFIs to trip! If use of
the GFI is unavoidable, the only way to alleviate this
problem is to reduce the amount of fi ltering by remov-
ing some of the capacitors that shunt the noise to
ground. If this becomes necessary, consult the factory
for assistance.
In North America, the GFIs we have tested trip at
closer to 5 mA and are therefore generally not a prob-
lem. Also, running on the lower voltage range cuts the
leakage current in half.
Q. Are there any special considerations for using the AR-
PRO with equipment containing switching power supplies?
A. Switching power supplies are frequently used in
video gear, lighting controllers, computers, and a
variety of programmable logic controllers for controlling
industrial equipment. Such supplies generate harmon-
ics in the AC current waveform because they work
by switching on and off at high speed. The amount
of current being drawn by equipment using switching
supplies may appear well under the AR-PRO’s 30 amp
limit when measured by a conventional average or
RMS reading meter, but the heating effects in the wir-
ing (both hot and neutral) can cause the wiring to be
severely overloaded for its rating. If your load appears
well within limits yet things are running hot, breakers
are tripping, and/or transformers are buzzing, you may
be experiencing high harmonic content in your power
line. In such a situation, reduce your load by unplug-
ging some equipment and power it through a different
circuit.
Even if you are not running this type of equipment, you
may experience the same effects if someone else on
your line is doing so. Your utility company may be able
to help you determine the cause.
REMOTE/DELAYED OPERATION
It is possible to control one or a group of remotely
located AR-PROs using wiring carrying only a low
control voltage. This can be very convenient in cer-
tain situations; for example, turning on amplifi ers on
a stage from a sound booth in the rear of a hall. The
control signal can be safely routed through wiring no
heavier than an unused microphone line. The control
signal is DC, so it will not cause noise in adjacent
audio lines. The necessary voltages are generated
internally in the AR-PRO; all that is needed is wiring
and a SPST switch.
All connections for remote operation are made
through the screw terminal strip on the rear panel.
There are three recommended confi gurations:
Single AR-PRO, local turn-on only:
Turn-on/off is
with the Power switch on the front panel. No wires
or jumpers should be connected to the terminal
strip.
Single AR-PRO, remote turn-on:
Connect a
switch between the Remote Out and Remote In
terminals. Leave the front panel Power switch in
the ON position. When the switch is open, the AR-
PRO is on; when closed, the AR-PRO, is off.
Multiple AR-PROs, remote turn-on in delayed
sequence:
A built-in delay of approximately a
quarter second is automatically provided to stag-
ger the potentially large inrush currents that occur
when certain types of equipment are powered up
simultaneously. Using such a delayed sequence
can avoid blowing a house breaker when all the
AR-PROs are powered from the same circuit.
To create a remote delayed sequence, all front panel
Power switches must be left in the ON position. All
Ground terminals must be connected together. The
Delay Out of the fi rst AR-PRO (the one that will turn on
fi rst) is connected to the Remote Out of the second unit.
The Delay Out of the second AR-PRO is connected to
the Remote Out of the third unit, and so forth for addi-
tional units.
The master on-off switch must be connected to the

AR-PRO – AC LINE VOLTAGE REGULATOR
- 10 -
Remote In and Remote Out terminals of the fi rst unit.
See the following illustration.
The diagram above illustrates a set of three AR-PROs
connected for remote turn-on in delayed sequence.
When the switch is opened, unit 1 turns on after 3
seconds. Unit 2 turns on a quarter second later, and
unit 3 turns on a quarter second after unit 2.
100 VOLT OPERATION
If you have a Model AR-PRO J, it may be switched for
use in powering equipment made for the Japanese
domestic market or for use in other countries with
nominal 100 volt AC lines. A slide switch located on the
rear panel allows the selection of either 100V or 120V
output. Note that there is a blue scale on the INPUT
VOLTAGE meter on the front panel for 100V use.
The capture range of the AR-PRO in 100V mode (the
range of voltages that will produce 100 ±5V at the out-
put) is from 80 to 112V and from 160 to 220V ±5%.
LIMITED WARRANTY
Furman Sound, Inc., having its principal place of busi-
ness at 1997 South McDowell Blvd., Petaluma, CA
94954 (“Manufacturer”) warrants its AR-PRO (the
“Product”) as follows:
Manufacturer warrants to the original Purchaser
of the Product that the Product sold hereunder will
be free from defects in material and workmanship for
a period of one year from the date of purchase. The
Purchaser of the product is allowed fi fteen days from
the date of purchase to complete warranty registration
by mail or on-line at the Furman website. If the Product
does not conform to this Limited Warranty during the
warranty period (as herein above specifi ed), Purchaser
shall notify Manufacturer in writing of the claimed de-
fects. If the defects are of such type and nature as to
be covered by this warranty, Manufacturer shall au-
thorize Purchaser to return the Product to the Furman
factory or to an authorized Furman repair location.
Warranty claims should be accompanied by a copy of
the original purchase invoice showing the purchase
date; this is not necessary if the Warranty Registra-
tion was completed either via the mailed in warranty
card or on-line website registration. Shipping charges
to the Furman factory or to an authorized repair loca-
tion must be prepaid by the Purchaser of the product.
Manufacturer shall, at its own expense, furnish a re-
placement Product or, at Manufacturer’s option, repair
the defective Product. Return shipping charges back to
Purchaser will be paid by Manufacturer.
THE FOREGOING IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PAR-
TICULAR PURPOSE. Manufacturer does not warrant
against damages or defects arising out of improper
or abnormal use of handling of the Product; against
defects or damages arising from improper installa-
tion, against defects in products or components not
manufactured by Manufacturer, or against damages
resulting from such non-Manufacturer made products
or components. This warranty shall be cancelable by
Manufacturer at its sole discretion if the product is
modifi ed in any way without written authorization from
Furman Sound. This warranty also does not apply to
Products upon which repairs have been affected or
attempted by persons other than pursuant to written
authorization by Manufacturer.
THIS WARRANTY IS EXCLUSIVE. The sole and
exclusive obligation of Manufacturer shall be to repair
or replace the defective Product in the manner and
for the period provided above. Manufacturer shall not
have any other obligation with respect to the Products
or any part thereof, whether based on contract, tort,
strict liability or otherwise. Under no circumstances,
whether based on this Limited Warranty or otherwise,
shall Manufacturer be liable for incidental, special, or
consequential damages. Manufacturer’s employees or
representatives’ ORAL OR OTHER WRITTEN STATE-
MENTS DO NOT CONSTITUTE WARRANTIES, shall
not be relied upon by Purchaser, and are not a part
of the contract for sale or this limited warranty. This
Limited Warranty states the entire obligation of Manu-
facturer with respect to the Product. If any part of this
Limited Warranty is determined to be void or illegal,
the remainder shall remain in full force and effect.
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