Allen&Heath GL2000 - Manual (Page 4)

4 GL2000 U SER G UIDE
AC mains supply = 100 to 110 V.AC 100 T 1.6A 20mm fuse
AC mains supply = 110 to 125 V.AC 120 T 1.6A 20mm fuse
AC mains supply = 210 to 230 V.AC 230 T 630mA 20mm fuse
AC mains supply = 235 to 260 V.AC 240 T 630mA 20mm fuse
CONNECTING AC MAINS TO THE CONSOLE
Refer to the SAFETY WARNING on the first page of this User Guide.
Mains input to the GL2000 is via a standard 3 pin IEC mains input connector. A mains cable with moulded mains
plug suitable for the local supply is supplied.
Check that the voltage indicated in the fuseholder window is the same
as the mains supply in your area.
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For best performance it is important that the earth system is solid, clean and noise-free. To prevent mains born
and external interference pickup from lighting equipment, motors and other mains powered equipment it is
recommended that a separate 'clean' mains distribution outlet is used for the audio system.
All signal cables should have their screens connected to earth at the connector. If earth (ground) loop problems
result in audible hum or buzz then disconnect the cable screen connection at one end, usually the destination end.
This may be done within the cable plug or by operating the 'ground lift' switch if available on the connected
equipment. Many DI boxes and power amplifiers include this facility.
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EARTHING THE AUDIO SYSTEM
The console chassis is connected to mains earth via the power cable. Audio 0V is connected internally to the chassis
and therefore mains earth. In this way all signal returns and connector shields are connected to mains earth at the
console.
To ensure operator safety do not remove the earth connection from
the AC mains plug.
To avoid the risk of fire replace the fuse only with the correct type and
value as specified on the unit.
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It is normal for the power unit to dissipate heat. Ensure adequate
ventilation around the unit. Do not cover the unit or position it on soft
furnishings during operation.
Always switch the unit off before connecting or disconnecting the
console power cable.
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This unit contains no user serviceable parts. Do not remove the
cover. Refer servicing to qualified service personnel only.