Furman Sound PM-PRO, PM-PRO-E User Manual

FURMAN

FURMAN

FURMAN FURMAN

PRO SERIES

Power Conditioner/Monitor

MODELS PM-PRO, PM-PRO-E

Owner's Manual

3-9844 © 1998 FURMAN SOUND, INC. 960112-1407

2 PM-PRO POWER CONDITIONER/MONITOR

PM-PRO, PM-PRO-E SPECIFICATIONS

Note: Where different, PM-PRO-E specs are in parentheses.

Current rating:

Input Voltage Range:
Meter Accuracy:

Spike Protection Modes:
Clamping Voltage, all modes:

Response time:
Maximum surge current:
Maximum spike energy:
Noise attenuation:

Dimensions:

Weight:
Construction:

Power consumption:
Safety Information:

20 Amps, 2400 Watts at 120 VAC
(16 Amps, 3600 Watts at 230 VAC
0 to 280 VAC without damage
Voltmeter:+2(+4) VAC; Ammeter:+2 amps,
calibrated with trimpot adjustments
Line to neutral, neutral to ground, line to ground
TVSS rating 400V peak, L-N, L-G, N-G, tested
to UL 1449 (TVSS rating 400V peak, L-N; 680V
peak, L-G, N-G
1 nanosecond
11,000 amps (8 x 20mS pulse)
550 joules total
Differential mode: Greater than 40 dB;
Common mode: greater than 60 dB;
both 1 to 200 MHz

1.75" (4.45 cm) H x 19" (48.25 cm) W x
8" (25 cm) D.
6 lbs. (2.7 kg).
Steel chassis, zinc chromate plating;
brushed and black anodized aluminum
front panel; glass epoxy printed circuit boards.
32 Watts
PM-Pro: UL listed. CUL listed.
PM-PRO-E: CE

Options:

"-G" Suffix (PM-PRO only): provides "super
spec", isolated ground 120V outlets for special
applications. Please consult factory before
ordering to determine suitability in your
application.

The Furman PM-PRO is manufactured in the U.S.A.

FURMAN

FURMAN

FURMANFURMAN

Furman Sound, Inc.

1997 South McDowell Blvd.

Petaluma, California 94954-6919

Phone: [phone]

Fax: [phone]

Web: http://www.furmansound.com

E-Mail: [e-mail]

PM-PRO POWER CONDITIONER/MONITOR 3

g

Safety Information

To obtain best results from your Furman PM-PRO, please be sure to read this manual
carefully before using it.

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 servicin

Important Safety Instructions

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.

Please read prior to installation

1. Please read and observe all of the safety and operating instructions before the
PM-PRO is operated. Retain these instructions for future reference.

2. The PM-PRO 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. The PM-PRO should be situated so that its location and position do not interfere
with its proper ventilation. For example, the PM-PRO must not be placed on a rug,
bed, sofa, or similar surface which impedes airflow across the chassis.

4. Do not place the PM-PRO near heat sources such as radiators, heat registers,
stoves, or other appliances that produce heat.

5. The PM-PRO should only be connected to a 120
VAC, 60 Hz, 20 amp grounded electrical outlet.
Outlets wired for 20 amps may be identified by the
T-shaped socket opening that accepts the perpen­dicular blades of the PM-PRO's power plug. If you
don't have a 20 amp outlet available, have one in­stalled by a qualified electrician. Do not defeat the
ground or polarization of the power plug.

6. 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

4 PM-PRO POWER CONDITIONER/MONITOR

cables at plugs, and the point where they exit from the PM-PRO. To prevent risk of
fire or injury, damaged cords and cables should be replaced immediately.

7. Clean the PM-PRO with a damp cloth only. Do not use solvents or abrasive
cleaners. Never pour any liquid on or into the PM-PRO.

8. When left unused for a long period of time, the power cord of the PM-PRO should
be unplugged from the outlet.

9. The PM-PRO 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 PM-PRO has been exposed to rain or other moisture.
d. The PM-PRO does not appear to operate normally or exhibits a marked change
in performance.
e. The PM-PRO has been dropped, or the enclosure damaged.

10. The PM-PRO requires that a safety ground be present for proper operation.

Any attempt to operate the PM-PRO without a safety ground is considered im­proper operation and could invalidate the warranty.

11. There are no user-serviceable parts in the PM-PRO. Refer servicing to qualified

service personnel only.

PM-PRO POWER CONDITIONER/MONITOR 5

Introduction

Thank you for your purchase of a Furman PM-PRO or PM-PRO-E Power Con­ditioner / Monitor, and congratulations on your choice. (For simplicity, in this manual
the designation "PM-PRO" refers to either the PM-PRO or the PM-PRO-E unless a
specific distinction is made. A summary of the differences between the two models
appears at the bottom of this page.) The PM-PRO is one of Furman's top-of-the­line PRO Series power conditioners. It is designed to provide maximum protection
from the types of hazards faced by delicate analog and digital pro audio and video
equipment.

Your PM-PRO provides the most complete and comprehensive protection from
power line-related transient voltages, noise and wiring faults available. It combines
a high voltage surge and transient suppressor with an RFI/EMI interference filter.
The fast-acting suppression circuit responds in less than a nanosecond, clamping
transient voltages to safe levels. The filter works to prevent noise from fluorescent
lights, certain dimmers, radio transmitters, and similar sources of "electronic pollu­tion" from contaminating the AC line and from there, leaking into sensitive audio,
video, or computer circuits.

What sets the Furman Pro Series apart from other conditioners is the quantity,
quality, and configuration of its suppression devices. These include 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 -- hot­neutral, hot-ground, or neutral-ground), as well as highly attenuate audible high
frequency noise. Precise high-inrush magnetic circuit breakers avoid the false trip­ping often encountered with large reactive loads like power amps.

The PM-PRO front panel provides a three-color, 20-LED line voltage meter, a
true RMS reading 10-LED AC ammeter, and three status LEDs to indicate abnor­mal power conditions. The PM-PRO will even keep itself from turning on or shut
down under extreme conditions, if the voltage is below 80 volts or above 140 volts
(below 160 volts or above 280 volts for PM-PRO-E). The front panel also provides
an unswitched outlet (clean, filtered power is provided at the unswitched outlet,
too) and a 20 amp (16 amp for PM-PRO-E) magnetic circuit breaker rated for use
as an on/off switch.

The rear panel provides eight switched AC outlets to power up all your equipment.
These outlets are spaced widely enough to accommodate up to four bulky plug­mounted power supplies ("wall warts"). The heavy duty 12 AWG power cord is 10
feet (2.4 m) in length for extra reach and durability on stages and other high-traffic
areas.

PM-PRO Compared to PM-PRO-E

The PM-PRO is intended for use with 120 VAC power and is rated at 20 amps;
the PM-PRO-E is for 230 VAC power and rated at 16 amps. Outlets on the PM­PRO-E are IEC-320 types. The GROUND OK feature is not available on the PM­PRO-E. Other differences concern the reading of the voltmeter and ammeter and
other specifications, which are described on page 8 and on the rear cover.

6 PM-PRO POWER CONDITIONER/MONITOR

Front Panel Controls

PROTECTION EXTREME

OK VOLTAGE

GROUND

20 AMP POWER
CONDITIONER/
MONITOR

MODEL PM-PRO

This LED is normally on when the power to the PM-PRO's

PROTECTION OK:

OK

FLASHES

WHEN

SHUT

DOWN

90

LINE VOLTAGE

100 110 120 128

AC VOLTS

FLASHING DISPLAY INDICATES OUT OF RANGE

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 PM-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 functioning. 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 Department.

This LED is normally on when the power to the PM-PRO's outlets is

GROUND OK:

switched on. It monitors the integrity of the grounding, and reports if the ground­ing is compromised. It lights if a reasonably good safety ground exists. If this
LED is not lit when the power is on, the PM-PRO is not properly grounded.
Unplug the PM-PRO and correct the ground. (Not available on PM-PRO-E.)

This LED status indicator is normally off. It

EXTREME VOLTAGE SHUTDOWN:

monitors a hazard unfortunately common in the entertainment industry: wiring
faults -- for example, accidental connection to 220V where 120V is expected.
The PM-PRO senses voltages that are so high or low that operation would be
impossible and shuts the power down before damage can occur. For the PM­PRO, the cutoff voltages are under 80V or over 140V; for the PM-PRO-E, under
160V or over 280V. Upon initially applying power to the PM-PRO, this indicator
will be lit if the input voltage is below the low cutoff or above the high cutoff, and
power will not be applied to the PM-PRO's outlets. If the unit has been operat­ing within an acceptable input voltage and then that voltage goes out of the ac­ceptable range, the PM-PRO will shut power to the outlet and this LED will
begin flashing.

NOTE: If the mains power is below the low cutoff voltage and has caused the
PM-PRO to remove power from its outlets, the PM-PRO will not restore power
to the outlets until the mains voltage rises to more than 10V above the cutoff.
Similarly, if the mains power is above the high cutoff and has caused a shut­down, the PM-PRO will not restore power to the outlets until the mains voltage
falls more than 10V below the cutoff. The reason for this is to prevent the
power oscillating on and off in marginal conditions.

This three-color, 20 LED bargraph is an accurate, self-check-

LED VOLTMETER:

ing AC voltmeter that continually measures normal voltages. The meter reads
from 90 to 128 volts in 2 volt steps (PM-Pro-E: 180 to 256 volts, in 4 volt
steps). The normal range voltages are indicated in green, with moderate and
extremely high or low voltages in yellow and red respectively (see chart on

PM-PRO POWER CONDITIONER/MONITOR 7

2 8 14 20

- PROTECTIVE SHUTDOWN MAY OCCUR

CURRENT

AC AMPS

UNSWITCHED OUTLET

20 AMPS

POWER

page 8). The voltmeter provides three special flashing patterns to indicate ab­normal power conditions:

(1) If only the single leftmost LED flashes, the input voltage is marginally low.
Power to the PM-PRO's outlets will remain on unless the incoming voltage falls
below the Extreme Voltage Shutdown low cutoff.
(2) If all of the LEDs on the voltmeter flash, the input voltage is marginally high.
Power to the PM-PRO's outlets will remain on unless the incoming voltage rises
above the Extreme Voltage Shutdown high cutoff.
(3) If none of the LEDs on the voltmeter are lit, and the Extreme Voltage LED
indicator is flashing continuously, then the PM-PRO has shut down power to its
switched outlets because the input voltage is in a range considered extreme.

The PM-PRO's voltmeter has a basic accuracy of plus or minus two volts, and
extreme cold or heat may cause an additional one volt of error (four volts and
two volts for the PM-PRO-E). Please note that the voltage reading is advisory only.
The PM-PRO does not compensate for high or low line voltage. If you frequently
move your rack to different locations, derive power from generators, use 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 Line Voltage Regulators.

This three-color, 10 LED ammeter will give you a reliable indica-

LED AMMETER:

tion of current draw even for highly nonlinear loads, like amplifiers and switching
power supplies. It reads AC current from 0 to 20 amps, in two-amp steps (PM­PRO-E: 0 to 16 amps in 1.6 amp steps). When using audio power amps with the
PM-PRO, it is normal for the current draw to fluctuate considerably, increasing
on musical peaks and decreasing at quiet times. To avoid tripping the PM-PRO's
circuit breaker, adjust your levels so that the highest peaks do not exceed the
rated current.

NOTE: The Voltmeter, Ammeter, and status LEDs stay on even when the power
switch is off. This feature allows you to check voltage and current before power­ing up your equipment. Both of these LED meters are designed for continuous,
ongoing use. They consume little power, just a few cents worth a month, much
like a clock.

This outlet provides conditioned power at all times when

UNSWITCHED OUTLET:

the PM-PRO is plugged in and operating under normal conditions.
This appears to be an ordinary toggle

CIRCUIT BREAKER/ON-OFF SWITCH:

switch, but in fact is a precision magnetic circuit breaker. Because its operation
is magnetic, not thermal, it is much more accurate in its tripping current, yet it

8 PM-PRO POWER CONDITIONER/MONITOR

will not be tripped falsely by the transient high inrush currents often encoun­tered when turning on large reactive loads like power amps. Its trip point is
unaffected by ambient temperature. The breaker/switch controls power to the
eight switched rear panel outlets, but does not affect the voltmeter, the amme­ter, or the status LEDs. If it trips, reduce the load on the PM-PRO and push it
back to the ON position. (Note: The PM-PRO-E's circuit breaker is not mag­netic.)

Voltmeter Displays

The PM-PRO informs you of voltage problems at a glance. The following chart
summarizes how the PM-PRO's voltmeter responds to input voltages from extremely
low to extremely high.

100 110 120 128

AC VOLTS

PM-PRO Voltmeter Reading

Meter off--Extreme Voltage LED flashes
The LED beneath the 90V mark flashes
Meter Reads in Low Red
Meter Reads in Low Yellow
Meter Reads in Green
Meter Reads in High Yellow
Meter Reads in High Red
All Meter LEDs Flash
Meter off--Extreme Voltage LED Flashes

Mains *

Below 80V
80-90
90-104
106-108
110-120
122-124
126-128
130-140
Above 140

90

Voltage Status

Extreme (Shutdown)
Low Marginal
Low
Medium Low
Normal
Medium High
High
High Marginal
Extreme (Shutdown)

* For PM-PRO-E, double all indicated voltages.

Power Status LEDs

Outlets

OFF

ON
ON
ON
ON
ON
ON
ON

OFF

PROTECTION

OK

GROUND

EXTREME

VOLTAGE

OK

FLASHES

WHEN

SHUT

DOWN

PM-PRO POWER CONDITIONER/MONITOR 9

Symptom:
Possible Cause:
Action Needed:

Symptom:
Possible Cause:
Action Needed:

Symptom:
Possible Cause:
Action Needed:

Symptom:
Possible Cause:

Action Needed:

PROTECTION OK Indicator not lit.
Protection devices are damaged.
Factory Service.

Ground OK Indicator not lit.
No building ground, bad outlet.
Locate good ground, run ground wire.

Flashing voltmeter display.
Input voltage is marginally high or marginally low.
Correct line voltage. Consider installing a Furman voltage
regulator.

EXTREME VOLTAGE Indicator is flashing.
Input voltage is extremely high or extremely low, causing power
to the PM-PRO's outlets to be shut down.
Correct line voltage. Consider installing a Furman voltage
regulator.

Effects of Lightning

Lightning is a natural phenomenon of overwhelming force that represents the
most difficult circumstance faced by a power protection product. The degree of
protection a PM-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 PM-PRO will absorb the excess voltage in­visibly and harmlessly. However, if lightning strikes the actual building where the
PM-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 PM-PRO itself and will affect only certain spike
suppression components (called varistors or MOV's.) In this "suicide" mode, the
PM-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 Electric Code.

Any PM-PRO known to have taken a direct lightning hit should be checked by a
qualified technician or the Furman factory to determine whether the MOV's need
replacement. (If the 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 PM-PRO to pro­tect against a direct lightning hit. The first 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 a contractor to
have one installed.

10 PM-PRO POWER CONDITIONER/MONITOR

Limited Warranty

Important Note:To be sure of obtaining full protection under the terms of the
Three Year Limited Warranty in case your ownership documents are lost,
please fill out and return the Warranty Registration Card immediately.
Please verify that the serial number shown on the Warranty Card matches
the serial number on your unit.

The Furman PM-PRO is 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 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 cancellable by Furman at its sole discretion if the
PM-PRO unit has been subjected to physical abuse, has been operated without a
proper safety ground, 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 below.

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. Please display your RA Number prominently on the
front of all packages.

PM-PRO POWER CONDITIONER/MONITOR 11

12 PM-PRO POWER CONDITIONER/MONITOR

Other Furman Products

Power Conditioning & Distribution

PL-8, PL-PLUS
PL-PRO
PL-TUNER
PLH-15
PM-8
PS-8, PS-8R
PS-PRO
PowerLink
PowerPort
MiniPort-15
MiniPort-20
MiniPort-15Q
MiniPort-20Q
RS-1
RS-2
AR-1215
AR-2306
AR-1220
AR-1230
AR-2330
AR-2330D
AR-PRO
BP-1000
ACD-100
ASD-120
IT-1210
IT-1220
IT-1230
PlugLock
PlugLock-PRO
WartStrap

Power Conditioner & Light Module, 15A
Power Conditioner & Light Module, 20A
Power Conditioner/Instrument Tuner, 15A
Power and Light Center, 15A
Power Conditioner/Monitor, 15A
Power Conditioner/Sequencer, 15A
Power Conditioner/Sequencer, 20A
Remote AC Power Sequence Controller
Remote AC Power Controller
Power Relay, 15A
Power Relay, 20A
Power Relay for Quad Box Mount, 15A
Power Relay for Quad Box Mount, 20A
System Control Panel, Maintained Switching
System Control Panel, Momentary Switching
AC Line Voltage Regulator, 15A, 120V
AC Line Voltage Regulator, 6A, 230V
AC Line Voltage Regulator, 20A, 120/100V
AC Line Voltage Regulator, 30A, 120/100V
AC Line Voltage Regulator, 30A, 220/230/240V
AC Line Voltage Regulator, 30A, 24,,230,220V, N. America Use
AC Line Voltage Regulator, 30A, 120V, Worldwide Use
On-Line Uninterruptible Power Supply, 1KVA
Power Distro, 100A
Sequenced Power Distro, 120A
Isolation Transformer, Balanced AC Power, 10A
Isolation Transformer, Balanced AC Power, 20A
Isolation Transformer, Balanced AC Power, 30A
Locking Outlet Strip
Locking Outlet Strips, Vertical Mount
PlugLock WartStrap "Wall Wart" Retention Kit

Power Conditioning & Distribution

PQ-3 Reissue
PQ-4
Q-151, Q-152
Q-301, Q-302
Q-602
Q-541
PUNCH-10
X-312
X-324
X-424
X-524
C-132
LC-6
QN-44
SP-20A
HA-6A
HR-2
HDS-6
HR-6
PB-48
PB-48D

MM-3
MM-4A
MM-8A
DJM-6
DJM-8
SM-3
IP-8
IP-2, IP-2B
VU-40
SC-1,2

Parametric Equalizer, Instrument Preamp
Parametric Equalizer, 4 band
Dual 15-Band Graphic Equalizer
30-Band Graphic Equalizer
Dual 30-Band Graphic Equalizer
Quad 5-band Stereo Graphic EQ
Bass Enhancement System
12 dB Crossover
2-Way/3-Way 24 dB Crossover
3-Way/4,5-Way 24 dB Crossover
4-Way 24 dB Crossover
Compressor/Limiter
Stereo Compressor/Gate
Quad Noise Gate
Stereo Half rack Power Amp, 20W per channel
Headphone/Monitor Amp
Headphone Passive Remote Box
Headphone Distribution System
Personal Headphone Mixer for use with HDS-6
48-Point Patch Bay with TRS Connectors
48-Point Patch Bay with TRS and D-Sub Connectors
(Full range of patch cords also available)
Three Input Mic Mixer
4 x 1 Rack Mount Mixer
4 x 2 Rack Mount Mixer
DJ Production Mixer
DJ Production Mixer
Stereo Mixer with Ducking
Iso-Patch, Isolated Patch Bay, 8 Channel
Iso-Patch, Dual Isolator, 2 Channel
System Monitor (Power/VU Meter)
Security Covers