Furman M-85 Merit Series Owner's Manual
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INTRODUCTION
Thank you and congratulations on your purchase
of
your Merit M-8S Surge
Sequencer. The
bination
designed to provide many years
Please take a moment to read this manual and learn
about the many features and benefits that the Merit
M-8S
SAFETY
1.
Please read and follow all instructions.
2.
Please keep these instructions.
3.
Please heed all warnings.
4.
WARNING:
use only. Do not use this device
To
reduce the risk
expose this device to rain
5.
CAUTION:
connect the
any equipment connected to the
6.
Clean only with dry cloth.
of
value and performance and has been
has to offer.
INFORMATION
M-8S
This device is intended for indoor
of
To
reduce risk
M-8S
from
Protector and Power
represents an excellent com-
of
reliable service.
in
or near water.
fire
or
electric shock, do not
or moisture.
of
shock, please dis-
AC
power before servicing
M-8S.
7.
CAUTION:
as radiators, heat registers, stoves, or other equipment that may produce intense heat.
8.
Protect power cords from being walked on
pinched, particularly at the point where they exit the
device.
9.
Please, only use accessories specified by the
manufacturer.
10.
Refer all servicing to qualified personnel. Servicing is required when the unit has been damaged
any way
11.
power disconnect. The device is intended for
power sequencing.
12. Do not defeat the safety purpose
ed plug. A grounded plug has two blades and a
round grounding contact. If
does not fit into your outlet, please consult an elec-
trician for assistance.
13.
an
AC
tion.
or
WARNING:
WARNING:
outlet with a protective earth ground connec-
Do not install near heat sources such
fails to operate.
Do not use power cord as the main
of
the ground-
the grounding contact
This device must be connected to
or
in
AC
FEATURES
Sequenced Outlets
safely power cycled on and off with a single switch.
Merit
to Neutral
age.
Class Surge
Surge protection
RFI/EMI filtration -
than 26dB
of
attenuation from
Remote Interface
nix style connector allows remote operation and
compatibility with Furman legacy equipment.
2
allows large
Protection
with
Pi
type
Legacy style interface with Phoe-
AN
systems to be
Provides basic Line
zero ground leak-
LCR
filter gives greater
100
KHz to 1 MHz
Thermal
120VAC
Green
9
Outlets-
1
0
ft.
3
Year Limited Product
documentation at the end
www.furmansound.com
Circuit
LED-
Breaker-
Indicators for status.
NEMA 5-15R
Power Cord -
N EMA 5-15P
Rated 15Amps at
Warranty-
of
this manual
See warranty
or
online at
FEATURES (Continued)
Sequenced Outlets
Most sound reinforcement professionals realize the
equipment damage occurs while devices
majority
are either powered up or powered down. Power
sequencing
up
bilize before the next stage
gized. When powering down, the sequence order
is reversed, which results
expensive AV equipment.
Although there are many benefits to power sequenc-
ing, perhaps the most well-known
"Speaker Pop". Speaker Pop is the loud popping
of
noise that occurs when
ered up simultaneously or out
people have experienced
to being extremely unsettling,
stress or damage sound system components such
as amplifiers and speakers. By delaying the activation
has had the opportunity to stabilize,
virtually
Power Sequencing is also useful
sance breaker trips. Amplifiers can have very high
in-rush currents at power up.
are activated simultaneously, the in-rush currents
sum together and can exceed the capacity
branch circuit which can cause the circuit breaker
to trip. The Furman
·
sequencing (offsetting) power activations over time.
This offset sequence
to occur over several seconds rather than
once, which prevents nuisance breaker trips.
The turn-on delay intervals are factory preset to 5
seconds per stage. This delay can be increased or
decreased using the rear panel trim pot adjustment
(see
of
equipment to be powered
allows
stages which gives equipment time to sta-
in
the amplifiers until the low level
of
eliminated.
"Adjusting
AN
AV
M-8S
allows
the Delay
equipment is ener-
of
a soft landing for your
in
is the elimination
components are pow-
sequence. Most
of
Speaker
prevents breaker trips by
transient load currents
Interval"
Pop.
Speaker
in
multiple amplifiers
If
for details).
In
Pop can
equipment
Speaker
preventing nui-
addition
Pop is
the
of
all at
equipment
a power outage,
the event
In
plugged into an
When power is restored, the behavior
depend upon switch settings and how the unit
will
has been configured:
M-8S
the
• If
mode and the Sequence switch is
tion, the delayed outlet groups
normal delayed sequence order when power is
restored.
M-8S
the
• If
mode the delay outlets
by the end user.
Merit
The M-8S
Surge
filter is designed to dissipate voltage transients and
protect your equipment from surge events. The
M-8S
which provides a visual indication that the
surge protection circuit is operational.
Thermal
Resettable 15 Amp circut breaker.
Sequence On/Off Switch:
The front panel sequence on/off switch
powers
The front and rear panel
always on when power is applied to the
Class Surge Protection
is also equipped with a Protection
of
M-8S will lose power simultaneously.
has been configured for Maintained
has been configured for Momentary
will
features Furman's Merit Line to Neutral
protection and
Circuit Breaker
and off the DELAY
on
RFIIEMI
UNSWITCHED
all
M-8S
the
of
the ON
in
turn on
will
remain off until activated
filtration. The Merit
and 3 outlets.
2,
1,
posithe
in
LED
OK
M-8S'
sequentially
outlets are
M-8S.
3
FRONTPANELFEATURES--------------------------------------111
@
0
FURMAN.
@
0
and 3
2,
DELAY
The DELAY
present state
outlets.
3
let is
Protection
Although
from transient
can
beyond the
device to absorb without sustaining some degree
damage.
curs, the green
located
guish
protection has been compromised and the unit must
be returned to Furman Sound. Please
man Tech Support or your Furman
1,
1,
of
all
In
ON. If
occasionally
completely. If
the indicator is
OK Indicator:
the Furman Merit
capabilities
the rare instance
In
on your front panel will
Indicators:
2 and 3 indicators
the corresponding DELAY
the indicator is
cases,
voltage
"PROTECTION OK"
if
OFF,
Filter assures protection
spikes and surges, nature
produce
electrical forces that are
any surge suppression
of
this happens the M-88' surge
DELAY3
always
the outlet is
which damage oc-
in
either dim or extin-
show the
2 and
1,
the out-
ON,
OFF.
LED indicator
contact Fur-
Dealer.
of
PROTECTION OK POWER
Power
The
is
Thermal
Resettable 15 Amp circut breaker.
"trips" please
Sequence On/Off Switch:
The front
and off the DELAY
rear panel UNSWITCHED outlets are always
This on/off switch will
or
Indicator:
POWER
applied to the M-88.
MOMENTARY
indicator is
Circuit
reduce the
panel
Breaker
on/off switch
1,
mode.
illuminated
If
load.
sequentially
2 and 3 outlets.
either
operate
in
any time power
this breaker
powers on
The front and
MAINTAINED
on.
REAR
0
E9
PANEL
120VAC,
®
FEATURES
,.----UNSWITCHED~
SOISOMZ
1:~
=~~-·
0
Adjusting
The delay interval,
between the turn-on
secutive DELAY
3,
and
5 seconds.
shorten the
the position
located
4
the Delay Interval
which is the time
turn-off
I
outlets
is factory preset to
possible
It is
delay
of
on the right side
interval
the DLY-ADJ trim pot
1 and
con-
of
or 2
2,
approximately
to lengthen
by changing
panel.
rear
of
DELAY 1
1:~
=~
or
DELAY2
1:~
=~
delay
The
quires a
(delay
rear
the left
in
slot
driver to rotate the trim pot to set your desired
The minimum
the trim pot is adjusted
maximum
achieved when the pot is rotated
adjustment procedure is
small
adjustment) is a trim pot that is
the
of
the
of
the center
11:~
standard screwdriver. The DLY ADJ
M-88
delay
above the legacy
DIP
delay
between stages
DELAY 3
~'
=~I
Switches. Locate the
the trim pot and use a screw-
of
(1/2 Second) is achieved when
counter-clockwise. The
fully
IIEMOTl'POf!T
simple
interface and to
(-10
fully clockwise.
3(1)
and re-
located
rectangular
Seconds) is
0
0
on the
delay.
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