Furman Sound Power Supply PS PRO User Manual

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PS-PRO - POWER CONDITIONER/SEQUENCER  
20 amp plugs, see the information sheet“What Kind  
Of Plug Is This, Anyway?” that accompanied this  
RECOMMENDATIONS  
In audio/video installations, we recommend that  
power amps receive power last — plug them all into  
Delay 3 or divide them into two groups and plug  
one group through Delay 2 and the other through  
Delay 3. Low level equipment such as mixers and  
signal processors should use Delay 1. Equipment  
incorporating clocks or timers such as VCR’s, or  
equipment that must respond to wireless remote  
actuation, should use the unswitched outlets. We  
suggest keeping the front panel unswitched outlet  
free for equipment that is only in use temporarily.  
manual, or request a copy from Furman.  
POWER SEQUENCING  
FEATURES  
The PS-PRO rear panel provides one unswitched  
outlet pair and three switched outlet pairs. The  
switched outlet pairs are labeled Delay 1, Delay 2,  
and Delay 3. (The other pair of outlets on the rear  
panel and an additional single outlet on the front  
panel are unswitched.)  
The overall capacity of the PS-PRO is 20 amps. This  
refers to the combined steady-state current drawn  
by all devices plugged into all of its nine outlets. If  
this combined current level exceeds 20 amps at any  
time, the circuit breaker will trip, cutting off power  
to your rack. If this occurs, you must reduce the load  
by unplugging one or more units from the PS-PRO.  
Then push the white button on the circuit breaker  
(on the front panel) in to reset it.  
Here’s how the PS-PRO works: When an ON se-  
quence is initiated, power is immediately applied  
to the Delay 1 outlets. Power is then applied to  
Delay 2 and Delay 3 outlets per the 1-60 second  
total delay setting you choose with the front panel  
Delay Adjust control.  
The screwdriver-settable Delay Adjust controls the  
total delay time between the Delay 2 and Delay 3  
outlets. For example, if the Delay Adjust control is  
set to 30 seconds, Delay 1 outlets will go on immedi-  
ately, Delay 2 outlets will receive power 15 seconds  
after Delay 1 outlets, and Delay 3 outlets will receive  
power 15 seconds after Delay 2 outlets. Therefore  
the total delay time is 30 seconds.  
Although 20 amps is an absolute limit, the PS-PRO  
will allow you to come as close as possible to using  
the full 20 amps, because with power sequencing,  
the risk of tripping the breaker is greatly reduced.  
This is because the PS-PRO handles large but  
temporary inrush currents in stages, rather than  
simultaneously, allowing each stage to settle to its  
steady-state current draw before the next stage is  
powered.  
The order is reversed on an OFF sequence. For  
example, when an OFF sequence is initiated and  
the Delay Adjust control is set at 60 seconds, Delay  
3 outlets lose power immediately, Delay 2 outlets  
lose power 30 seconds later and Delay 1 outlets lose  
power 30 seconds after the Delay 2 outlets have  
been shut off. The total delay time is 60 seconds.  
Outlets and Plugs: The PS-PRO’s four rear panel  
outlet pairs are standard 120V, 20A duplex types.  
These outlets are widely spaced, to accommodate  
one bulky plug-mountedwall wart”power supply  
in each without covering up an adjacent outlet.  
The front panel outlet is limited to 15 amp use. The  
PS-PRO also uses a 20 amp line cord, which can be  
recognized by the perpendicular blades on the  
plug. In 20 amp products, use of a plug of this type  
is required for UL safety certification. It is compat-  
ible with 20 amp outlets (such as the ones on the  
PS-PRO’s rear panel.) For more information about  
In the event of a power out, of course all equipment  
plugged into a PS-PRO will lose power simultane-  
ously. However, when power is restored, the delayed  
outlet groups will again turn on in the usual delayed  
sequence (if set to maintained on mode).  
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PS-PRO - POWER CONDITIONER/SEQUENCER  
first so that the PS-PRO receives a stabilized voltage  
to distribute.  
POWER  
CONDITIONING  
FEATURES  
MAINS WIRING FAULT  
ANALYZER  
The PS-PRO provides a very high degree of power  
conditioning protection for your expensive and  
delicate equipment.What sets Furman’s top-of-the-  
line PRO-level protection apart from that offered  
by other conditioners is the quantity, quality, and  
configuration of its suppression devices. These in-  
clude MOV’s, gas discharge tubes, fast-blow fuses,  
and high voltage inductors and capacitors. This  
unique combination can safely absorb and dissipate  
large spikes from nearby lightning strikes and other  
sources (up to 11,000 amps across any wiring mode  
— line-neutral, line-ground, or neutral-ground), as  
well as highly attenuate audible high frequency  
noise. Clean, filtered power is provided at all 9  
outlets, even the unswitched ones.  
The PS-PRO also assists in analyzing any faults that  
may occur in the AC mains wiring. Two green and  
one red neon indicators light in a specific pattern for  
normal wiring and in different patterns for various  
faults. When the AC wiring is correct, both green  
indicators will be lit, but not the red indicator. If  
any other pattern of indicators is lit, a fault is pres-  
ent. The chart next to the indicators identifies the  
fault’s exact nature. Since any wiring fault presents  
a potentially serious safety hazard, the assistance  
of a qualified electrician should be obtained in cor-  
recting the problem.  
ON or OFF  
SEQUENCING  
The method of initiating an ON or OFF sequence  
depends on whether the unit is to be controlled  
locally or remotely. If remotely, it further depends  
on the type of switch or switches used (momentary  
or maintained).  
The PS-PRO also includes special circuitry to detect  
additional wiring faults, with several front panel LED  
status indicators. The PS-PRO will even keep itself  
from turning on, or will shut down under extreme  
conditions, if the voltage falls below 80 volts or  
rises above 140 volts.This feature is called“Extreme  
Voltage Shutdown.It is particularly valuable in the  
entertainment industry, where equipment is fre-  
quently moved to different venues, and accidental  
connection to 220V is a real possibility. See pages  
5-6 or more information on the various protection  
featuresindicator lights.  
LOCAL CONTROL  
For local control, an ON sequence is initiated  
by turning the key switch to the ON position,  
and an OFF sequence by turning the key switch  
to REM or OFF position. The START ON-OFF  
SEQUENCE pushbutton is not normally used in  
local operation.  
Despite its many protective features, you should be  
aware that the PS-PRO does not compensate if the  
AC line voltage itself is high or low (i.e., it does not  
compensate for brownout conditions). If you fre-  
quently move your rack to different locations, derive  
power from generators, use long extension cords,  
travel internationally, or are in an area particularly  
prone to brownouts, you may benefit from the  
use of one of Furman’s AC Line Voltage Regulators  
in addition to the PS-PRO. If you do use a voltage  
regulator, run the raw power line into the regulator  
NOTE: If the PS-PRO is to be used under local control  
only, and a jumper is installed on JMP1, and no  
switch is connected to the PS-PRO’s terminal strip,  
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PS-PRO - POWER CONDITIONER/SEQUENCER  
terminals are momentary tied together, the PS-PRO  
will sequence ON or OFF.  
then a jumper should be connected between the  
REM and +12V terminals. Otherwise, turning the  
front panel key switch to the REM position will turn  
the PS-PRO ON.  
JMP3 (MAINT OFF), when the REM and +12V  
terminals are tied together, the PS-PRO will  
sequence ON.  
JMP4 (REM TO GND = ON), when the REM and  
GND terminals are tied together, the PS-PRO will  
sequence ON (Note: JMP1 must have a jumper  
installed).  
REMOTE CONTROL  
When the PS-PRO’s front panel key lock switch is  
in the REM position, it may be controlled by one or  
more switches in remote locations. In the most basic  
configuration, only two wires and an SPST switch  
are needed to initiate an ON or OFF sequence. The  
switch may be either a momentary or a maintained-  
contact type, depending on a jumper setting inside  
the PS-PRO. If an additional wire is used, an LED may  
also be installed at the remote end to indicate that  
the power is on.  
JMP5 spare jumper holder.  
MOMENTARY vs. MAINTAINED CONTACT  
SWITCHING  
An on-off switch of either kind may be used to  
actuate the PS-PRO’s remote operation. Maintained  
switches, such as most toggle switches and  
push-on/push-off button switches, (including  
the Furman RS-1 key lock switch), stay open until  
switched, and then remain closed until switched  
again. Momentary switches, usually pushbutton  
types like the Furman RS-2 (which also provides  
a locking key switch), are normally open and stay  
closed only as long as the button is pressed.  
PS-PRO units come factory-set for maintained  
operation (jumper is installed on JMP1). They may  
be easily converted to other operating modes by  
moving jumper plug/plugs on the PS-PRO’s circuit  
board. To do this, first disconnect the unit from  
AC power. Remove the six screws that secure the  
top cover and one screw from the front panel. Just  
install the jumper plugs to the desired mode of  
operation. Reattach the top cover.  
Maintained switches are generally the most  
convenient when there is only one remote  
location. When more than one location is required,  
momentary switches offer the advantage of a turn-  
on or turn-off sequence which may be started from  
any location.  
MAINTAINED MODE  
There are 3 maintained modes of operation:  
REM to +12V = OFF (jumper plug installed on  
JMP1, MAINT ON)  
The PS-PRO main circuit board has 5 pairs of  
terminals (PCB REV D and later) labeled as:  
MAINTAINED MODE (continued)  
JMP1 (Default) (MAINT ON) , when the REM and  
+12V terminals are tied together, the PS-PRO will  
sequence OFF.  
(continued on page 7)  
JMP2 (MOMENTARY), when the REM and +12V  
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PS-PRO - POWER CONDITIONER/SEQUENCER  
FRONT PANEL  
START ON/OFF SEQUENCE:This pushbutton switch  
is used only when the key lock switch is in REM  
position and the PS-PRO is in Momentary Mode. It  
then acts the same as any other remote momentary  
switch that may be connected to the rear panel ter-  
minal strip. If the switched outlets are on, pushing  
it begins an OFF sequence. If they are off, pushing  
it begins an ON sequence. Do not use this switch  
when in Maintained Mode.  
PROTECTION OK: This LED is normally on when  
the power to the PS-PRO’s outlets is switched on.  
It monitors the integrity of the protection devices  
and reports if the protection is compromised. If an  
extremely large spike is encountered that exceeds  
the PS-PRO’s capacity, the main group of input  
protectors will blow an internal fuse, causing the  
indicator to go out. If this LED is not lit when the  
power switch is on, full protection is not function-  
ing. Spike protection may still exist, but will have  
a reduced capacity to absorb current. If this LED is  
not lit, please contact the Furman Service Depart-  
ment.  
EXTREME VOLTAGE SHUTDOWN: This LED indica-  
tor is normally off. It monitors a hazard common  
in the entertainment industry—wiring faults—for  
example, accidental connection to 220V. The PS-  
PRO senses voltages that are so high or low that  
operation would be impossible (under 80V or over  
140V) and shuts the power down before damage  
can occur. Upon initially applying power to the PS-  
PRO, this indicator will be lit if the unit is receiving  
below 80 volts or more than 140 volts, and power  
will not be applied to the PS-PRO’s outlets. If the  
unit has been operating with an acceptable input  
voltage and then the voltage goes out of the ac-  
ceptable range, the PS-PRO will shut down power  
to all of its switched outlets simultaneously, without  
observing the OFF delay cycle, and this LED will  
begin flashing. When power returns to within the  
acceptable range, the PS-PRO will observe its ON  
delays as it returns power to its switched outlets,  
and this LED will go out.  
NOTE: If the mains power is below 80 volts and  
has caused the PS-PRO to remove power from its  
outlets, the PS-PRO will not restore power  
to  
its outlets until the mains voltage is more than 90  
volts. If the mains power is above 140 volts and has  
caused the PS-PRO to remove power from its out-  
lets, the PS-PRO will not restore power to its outlets  
until the mains voltage is less than 130 volts. The  
reason for this is to prevent the power oscillating  
on and off in marginal conditions.  
DELAY ADJUST:This screwdriver-adjustable trimpot  
allows you to set the total turn-on/turn-off delay  
time from 1 to 60 seconds, as explained on page 6.  
The trimpot adjusts both the on delay and off delay  
times simultaneously.Turn the trimpot clockwise to  
increase the on and off delay times; turn the trimpot  
counterclockwise to decrease the delay times.  
POWER STATUS (DELAY) LEDs: One green LED is pro-  
vided for each of the three delay stages. Each LED  
lights when power is applied to its corresponding  
duplex outlet on the rear panel. All three LEDs then  
remain steadily lit until power is removed. During  
the power-down delay cycle, each LED goes off as  
power to its corresponding outlet is removed. In  
addition, the Delay 1 LED flashes if a remote switch  
(or the stored state) is OFF.  
MAINS WIRING INDICATORS: The PS-PRO assists in  
analyzing any faults that may occur in the AC mains  
wiring. Three neon indicators (two green and one  
red) light in a specific pattern for normal wiring and  
in different patterns for various faults. When the AC  
wiring is correct, both green indicators will be lit. If  
a fault is present, the chart immediately above the  
neon indicator will identify the exact nature of the  
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PS-PRO - POWER CONDITIONER/SEQUENCER  
fault. Since any wiring fault presents a potentially  
serious safety hazard, the assistance of a qualified  
electrician should be obtained in correcting the  
problem.  
NOTE: The Mains Wiring indicators and status LEDs  
stay on even when the power switch is off. This  
feature allows you to check the mains wiring before  
powering up your equipment. These indicators are  
designed for continuous, ongoing use. Like a clock,  
they consume very little power.  
CIRCUIT BREAKER: The overall capacity of the  
PS-PRO is 20 amps. If the combined steady-state  
current drawn by all devices plugged into all of its  
nine outlets level exceeds 20 amps at any time, the  
circuit breaker will trip, cutting off power to your  
rack. If this occurs, you must reduce the load by  
unplugging one or more units from the PS-PRO,  
and reset it. You can reset the circuit breaker by  
simply pressing in the button, which pops out when  
tripped. However, because it is a thermal type, you  
may have to wait a few moments after it trips for it  
to cool down before it will allow you to reset it.  
UNSWITCHED OUTLET: This convenient outlet pro-  
vides power at all times when the PS-PRO is plugged  
in and operating under normal power conditions.  
UNSWITCHED OUTLETS:The PS-PRO rear panel pro-  
vides clean, filtered power to this pair of unswitched  
outlets, adjacent to the power cord.  
SWITCHED (DELAYED) OUTLETS: The PS-PRO rear  
panel provides three pairs of switched outlets,  
widely spaced to allow use of equipment with  
plug- in (wall wart) transformers. These switched  
outlet pairs are labeled Delay 1, Delay 2 and Delay  
ON/REM/OFF SWITCH:When turned to the ON posi-  
tion, this key lock switch initiates an ON sequence,  
applying power to the PS-PRO’s switched outlets.  
When turned to the OFF position, it begins an OFF  
sequence. In the REM position, the PS-PRO will  
accept on/off commands from a remote switch or  
switches that may be connected to the rear panel  
terminals.  
REAR PANEL  
3. After the front panel switch is thrown to ON,  
Delay 1 outlets receive power instantly, Delay 2  
outlets receive power 1-30 seconds later and Delay  
3 outlets receive power 130 seconds after Delay  
2 outlets are powered. When thrown to OFF, the  
sequence is reversed, with  
needed to install a remote switch (seeMaintained  
Mode, page 6.) If a four-conductor cable is used, an  
LED may be installed at the remote end to indicate  
that the power is on.  
Delay 3 losing power instantly, Delay 2 outlets los-  
ing power 1-30 seconds later and Delay 1 outlets  
losing power 1-30 seconds after Delay 2 outlets are  
shut down. The delay intervals may be altered with  
the screwdriver-adjustable Delay Adjust control  
on the front panel.  
TERMINAL STRIP: Allows one or more switches to be  
connected to turn the PS-PRO on and off from a re-  
mote location.Two, and sometimes three, wires are  
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PS-PRO - POWER CONDITIONER/SEQUENCER  
The connection of the REM terminal to the +12V  
terminal initiates an OFF sequence. Disconnecting  
initiates an ON sequence. If the cable run is long, it  
is recommended that the REM wire be tied to the  
PS-PRO’s GND terminal during ON operation rather  
than leaving it floating.This will require the use of a  
third conductor and a double-throw switch.  
MOMENTARY MODE  
In Momentary Mode (jumper plug installed on  
JMP2)  
The PS-PRO has “memoryit only needs a  
momentary signal from the remote switch to  
change its state from ON to OFF. When first plugged  
in (or after power is lost and reapplied for any  
reason) the stored state is OFF, and the DELAY 1  
LED will flash. The unit will stay off until sequenced  
ON by a momentary connection of the REM IN  
terminal to +12V (the key switch must be in the  
REM position). The sequence starts on the rising  
edge of the signal.  
REM to +12V = ON (jumper plug installed on JMP3,  
MAINT OFF)  
The connection of the REM terminal to the +12V  
terminal initiates an ON sequence. Disconnecting  
initiates an OFF sequence. If the cable run is long,  
it is recommended that the REM wire be tied to the  
PS-PRO’s GND terminal during OFF operation rather  
than leaving it floating.  
The front panel START ON-OFF SEQUENCE switch is  
in parallel with, and functionally equivalent to, one  
or more remote momentary switches that may be  
connected to the terminal strip in the rear.  
REM to GND = ON (jumper plugs installed on JMP1  
and JMP4)  
The connection of the REM terminal to the GND  
terminal initiates an ON sequence. Disconnecting  
initiates an OFF sequence.  
The “memory” is independent of the key switch.  
This means that even if the unit is sequenced off  
by turning the key lock switch to OFF, when the  
key lock switch is turned back to REM, the unit will  
sequence back on — it will not be necessary to push  
the START ON-OFF SEQUENCE button again. The  
unit“remembers”its state until the incoming power  
is lost, in which case it would default back to OFF.  
NOTE: In Maintained Mode DO NOT USE the“START  
ON-OFF SEQUENCE” switch on the front panel. If  
you do you may activate an unintended sequence.  
If a Furman RS-1 is the controlling switch contact  
Furman’s Tech Support department for the proper  
wiring diagrams.  
MOMENTARY MODE  
The front-panel key lock switch is not the primary  
means of control in the momentary mode and  
should normally be left in REM. It may be a useful  
secondary means of control in the rare case of  
REM to +12V = OFF  
having several PS-PRO’s in parallel if there is some  
reason to shut down one unit without affecting the  
others. Because it is a maintained-contact switch,  
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the RS-1 is not an appropriate remote switch for the  
PS-PRO - POWER CONDITIONER/SEQUENCER  
RS-2 is the proper choice. Please contact Furman for  
RS-2 wiring diagrams.  
sync.This is the only way to re-sync units other than  
disconnecting AC power to all units. Remember :  
turning any key lock switch to OFF does not affect  
the stored state, even though it will temporarily turn  
the output of that unit off. If it is turned back to REM,  
the PS-PRO will sequence back to ON because the  
stored state is still ON.  
MULTIPLE UNITS  
You can use more than one PS-PRO to handle  
loads that exceed 20 amps (16 amps PRO-E). To  
control them remotely with one or more remote  
switches, connect (in parallel) the REM, +12V (and  
optionally GND) terminals of all units. Be sure that  
the mode (momentary or maintained) of all units  
is set the same. Set all key lock switches to REM.  
Connect a single maintained switch or one or more  
momentary switches to the nearest PS-PRO, as  
discussed in the sections above. To avoid tripping  
house breakers, the power input for each PS-PRO  
should come from a separate 20 amp AC circuit. If  
you are unsure whether your building’s wiring can  
accommodate multiple fully-loaded PS-PRO’s or  
PS-PROE’s, consult a qualified electrician.  
STATUS TERMINAL  
The STATUS terminal is an output that may be  
used to illuminate an LED at the remote location  
indicating that the power is available at the PS-  
PRO’s outlets. If it is high (+5V), the unit is ON (or at  
least in the process of sequencing ON); if low, the  
unit is OFF (or sequencing OFF). Simply connect the  
indicator LED between STATUS and ground (do not  
use a series resistor). If the LED does not light when  
the switch is in the ON position check the polarity  
and reverse the LED leads if needed.  
If multiple PS-PRO’s are controlled by one or more  
momentary remote switches, all of the PS-PRO’s will  
change state (from on to off or vice versa) on each  
rising edge of the voltage on the REM IN terminal.  
All remote switches or START ON-OFF SEQUENCE  
pushbuttons on any unit’s front panel will toggle  
all of the units. The key lock switches on each unit’s  
front panel will turn off an individual unit that is  
currently on without affecting the other units.  
FLASHING DELAY 1 INDICATOR  
The DELAY 1 LED on a PS-PRO flashes to indicate  
that a remote switch is off or not connected. In  
Maintained Mode (JMP1, MAINT ON’s jumper plug  
is installed), this will only occur when the REM  
terminal is tied to the +12V terminal. In Momentary  
Mode, the LED flashes if the stored state is OFF.  
Since the flashing function is only concerned with  
the state of the remote switch (or switches), note  
that it is possible for this LED to flash even when  
the unit is ON. This could occur when the PS-PRO  
is under local control (the key lock switch is in the  
ON position). In this case, DELAY 1 would flash and  
DELAY 2 and DELAY 3 would be steadily lit. This  
serves as a warning that the unit will sequence OFF  
if the key is turned to the REM position.  
The STATUS lines work the same in either mode.  
Each reflects the true state of the unit’s outlets and  
is affected by both the “memorized” state and by  
the key lock switch. A separate LED must be used  
to indicate the status of each PS-PRO.  
To address the unusual (hopefully rare) instance  
when several PS-PRO’s in parallel fall out of sync,  
resulting in some units turning on and others  
turning off when a remote button is pushed, the  
remote signal line has a special feature:  
Holding the REM line high for at least 4 seconds  
(whether by an actual remote switch or by any  
unit’s START ON-OFF SEQUENCE switch) will force  
all units to the OFF state, putting them back in  
EFFECTS OF LIGHTNING  
Lightningisanaturalphenomenonofoverwhelming  
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PS-PRO - POWER CONDITIONER/SEQUENCER  
forcethatrepresentsthemostdifficultcircumstance  
faced by a power protection product. The degree  
of protection a PS-PRO can offer depends on the  
intensity of the strike. If lightning strikes a distant  
power line and causes a relatively small disturbance  
to reach your location, the spike suppressors in the  
PS-PRO will absorb the excess voltage invisibly  
and harmlessly. However, if lightning strikes the  
actual building where the PS-PRO is installed (or  
somewhere very nearby), some damage may be  
unavoidable due to the extremely high voltage  
and current present. If this does occur, most likely  
damage will be limited to the PS-PRO itself and will  
affect only certain spike suppression components  
(called varistors or MOV’s.) In this “suicide” mode,  
the PS-PRO may sustain minor damage but  
generally will protect all equipment plugged into  
it from much more serious and costly damage  
as long as that equipment is properly grounded.  
Proper grounding requires the use of three-prong  
AC cords, and that the building’s outlets are actually  
grounded to earth as specified by the National  
Electrical Code.  
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.  
THREE YEAR LIMITED  
WARRANTY  
The Furman PS-PRO is protected by a limited three  
year warranty, covering defects in materials and  
workmanship, provided that the registration card is  
filled out and returned by the customer. Otherwise,  
a one year warranty applies. Products must have a  
proof of purchase from a Furman authorized dealer.  
During this period, Furman will make any necessary  
repairs without charge for parts or labor. Shipping  
charges to the factory or repair station must be  
prepaid by the owner; 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 shall be cancelable by Furman at its  
sole discretion if the PS-PRO unit has been sub-  
jected 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.  
Any PS-PRO known to have taken a direct lightning  
hit should be checked by a qualified technician or  
theFurmanfactorytodeterminewhethertheMOV’s  
need replacement. (If the PS-PRO’s PROTECTION OK  
indicator is not lit, there is definitely some damage.  
Some spike suppression capability may still be  
available by MOV Bank #2, but there is no guarantee  
of this.) For optimum protection, you should not  
rely exclusively on the PS-PRO to protect against a  
direct lightning hit. The first line of defense against  
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  
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PS-PRO - POWER CONDITIONER/SEQUENCER  
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 following important infor-  
mation on service.  
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 Ser-  
vice Department, (707) 763-1010, Ext. 120 or 121,  
between 8 am and 5 pm U.S. Pacific Time. Please  
display your RA Number prominently on the front  
of all packages.  
10  
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PS-PRO SPECIFICATIONS  
Current rating:  
Input Voltage:  
20 Amps (2400 Watts at 120 VAC)  
85 to 264 VAC without damage  
Mains Wiring analyzer: Detects one normal mode and five fault modes  
Delay Intervals:  
Total elapsed ON or OFF delay time adjustable  
from 1-60 seconds, with a single trimpot:  
ON sequence:  
Delay 1 outlets go on immediately with switch.  
Delays between outlets 1 and 2, and 2 and 3,  
adjustable from 1-30 seconds each  
OFF sequence:  
Remote Switch:  
Delay 3 outlets go off immediately with switch.  
Delays between outlets 3 and 2, and 2 and 1,  
same as ON delays  
Screw terminals, 2 for switch, 2 additional for  
optional LED (22 ga. minimum)  
Spike Protection Modes:Line to neutral, neutral to ground, line to ground  
Clamping Voltage, all modes: 200V peak  
Response time:  
1 nanosecond  
Maximum surge current:  
11,000 amps (8 x 20mS pulse)  
Maximum spike energy: 550 joules total  
Noise attenuation:  
Differential mode: Greater than 40 dB; Common  
mode: greater than 60 dB; both 1 to 200 MHz  
Dimensions:  
Weight:  
1.75H x 19”W x 10D.  
6 lbs (2.7 kg).  
Construction:  
Steel chassis, zinc chromate plating; .125”  
brushed and black anodized aluminum front panel;  
glass epoxy printed circuit boards.  
Power Consumption:  
Safety Agency Approvals:  
Optional:  
11 watts  
UL, NRTL-C, C-UL, CE listed.  
220/240V Versions (units with “Esuffix only) are  
intended for use in countries with nominal 220 to  
240 volt AC mains. Their rear panel outlets use  
internationally accepted IEC-320 connectors.  
Furman Sound, Inc.  
1997 South McDowell Blvd. Petaluma, California 94954-6919 USA  
Phone: 707-763-1010 Fax: 707-763-1310 Web: www.furmansound.com E-mail: [email protected]  
0004-090202-D  
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