Furman Sound PM-PRO II - Manual (Page 7)

SERIES II 20 amp powER CondItIonERS
(1) If only the single leftmost (beneath the
90V mark – 180V for E version) LED
flashes, the input voltage is marginally
low.
(2) If all of the LED’s on the voltmeter
flash, the input voltage is marginally
high. Power to the PL-PRO’s outlets
will remain unless the incoming
voltage rises above the Extreme
Voltage Shutdown cutoff voltage
(135 - 140 volts / 260 – 265 volts E
version / 120 – 125 volts J version).
(3) If none of the LED’s on the voltmeter
are lit, and the Extreme Voltages LED
indicator is illuminated, then the PL-
Plus II has shut down power to its
outlets because the input voltage is in
a range considered extreme (in excess
of 135 volts - 260 volts E version /
120 volts J version).
digital Voltmeter:
(pL-pRo d II and pm-pRo II only)
Furman’s laboratory precision AC digital
voltmeter continually measures incoming
voltages, within a typical tolerance of +/-
1.5VAC. It should be noted that the voltage
reading is incoming. No adjustment should be
necessary on these units.
digital Current meter: (pm-pRo II only)
Furman’s laboratory precision AC digital
6
current meter continually measures the total
circuit AC load, within a typical tolerance of +/-
0.5 amp. Because these meters feature true
R.M.S. technology, the current readings are
accurate regardless of load conditions (capacitive,
inductive or resistive).
notE: The PL-PRO II, PL-PRO D II, and PM-
PRO D II, do 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.
on/off Circuit Breaker:
This 20 amp capacity magnetic circuit breaker
switch is specifically designed to stand up to
the enormous high inrush current demands of
many Power Amplifiers. Additionally, the switch
is shielded from accidental power disconnection
with a hinged cover.
(E-versions feature 16 amp
capacity)
Extreme Voltage Shutdown Indicator:
This LED is normally off. It monitors a hazard
common in the entertainment industry: wiring
faults – for example, accidental connection
to 220VAC where 120VAC is expected, or an
open neutral from a 208 or 240VAC feed. The
Series II SMP+ circuit senses voltages that
are so high that operation would be impossible
and shuts the power down before damage can
occur. Upon initially applying power to these