QSC Audio ISA 500T - Manual (Page 17)

INSTALLATION:
COOLING REQUIREMENTS & AC MAINS
FAN COOLING-
Keep the front and rear vents clear to allow full air flow. Make sure that plenty of cool
air can enter the rack, especially if there are other units which exhaust hot air into it.
Connecting to the wrong line voltage is dangerous and may damage the amplifier or
constitute the risk of electric shock. Verify the correct AC line voltage by checking the
specification printed on the serial number sticker on the rear panel.
OPERATING VOLTAGE (AC mains)-
Air flow in QSC amplifiers
All QSC amplifiers draw cool air into the rear of the amplifier and
exhaust the hot air from the front. This is done so that the
equipment in the rack stays as cool as possible. This method of
cooling also gives the technician “direct” air temperature
feedback at the front of the rack, where it is the most conve-
nient. The front panel’s temperature is an accurate indicator of
“how hard” the amplifier is working.
The fan varies speed automatically to maintain safe internal
temperatures and minimize noise. Keep the front and rear vents
clear to allow full air flow.
Hot air exhausts out the front of the amp so it does not heat the
interior of the rack. Make sure that plenty of cool air can enter
the rear of the rack, especially if there are other units which
exhaust hot air into it. Also ensure that the exhaust air from the
front of the amplifier is not obstructed by an equipment cabinet
door (or otherwise).
Connect the AC line cord after the amplifier has been installed in the equipment rack. The IEC plug (the rectangular
“block” plug-end of the AC power cord) can only be inserted when it is properly oriented with the IEC receptacle on the
rear panel of the amplifier. Orient the IEC plug correctly and push the plug firmly into the IEC receptacle; it should seat
tightly.
The correct AC line voltage is shown on the serial number label. Connecting to the wrong line voltage is dangerous
and may damage the amplifier.
The AC line cord attaches to the IEC connector on the rear panel. Use the cord supplied with the amplifier, or an
equivalent. Insure that the wire gauge of the cord is #14AWG. Use of #16 or #18 AWG can be dangerous and is not
recommended. The larger AWG number indicates a physically smaller wire; smaller AWG number indicates a physically
larger wire (#12 AWG is able to carry more current than #14AWG).
Use the best possible connection to the AC power source. Avoid extension cords as they will cause some
voltage drop between the AC source and you amplifier. If the use of an extension cord is required, ensure that it is the
shortest length possible and is at least #14 AWG. Smaller AWG number means larger wire size (example: #12 AWG is
a larger physical wire size than #14 and able to carry more current). Ensure that all grounding connections are
maintained.
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The correct AC line voltage is shown on the serial number label.