Safety warning, Introduction, Service and technical support – Allen&Heath GR1 SERVICE MANUAL User Manual
Page 6: Precautions
GR1
USER GUIDE
3
INTRODUCTION
The GR1 continues ALLEN & HEATH’s commitment to provide high quality audio equipment engineered to meet
the exacting requirements of today’s audio business. It brings you the latest in high performance technology and
offers the reassurance of over two decades of manufacture and customer support.
This user guide presents a quick reference to the function, application and installation of the GR1. For further
information on the basic principles of audio system installation and engineering please refer to one of the specialist
publications available from bookshops and audio equipment dealers.
Whilst we believe the information in this guide to be reliable we do not assume responsibility for inaccuracies. We
also reserve the right to make changes in the interest of further product development.
SERVICE AND TECHNICAL SUPPORT
Under normal conditions the GR1 does not require user maintenance or calibration. Internal links and preset controls
may be set to configure the unit during installation. Any service work required should be carried out by qualified
service personnel only.
We are able to offer further product support through our worldwide network of approved dealers and service agents.
To help us provide the most efficient service please would you keep a record of the unit serial number, and date and
place of purchase to be quoted in any communication regarding this product.
SAFETY WARNING !
Mains electricity is dangerous and can kill. Mains voltage is present within the GR1. Do not
remove the top cover with mains connected. Do not carry out any work within the unit while
it is powered except for installation calibration. High voltage components are insulated for
safety but should not be touched with power applied. The mains voltage setting is factory wired
and marked on the rear panel. Check that this matches your local mains supply. Check your
mains wiring and earthing before switching on.
DO NOT REMOVE THE MAINS EARTH CONNECTION!
The chassis is always connected to mains earth to ensure your safety. An internal link may
be set to remove audio 0V from mains earth (ground lifted) to avoid ground loop problems.
PRECAUTIONS.
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AC POWER:
Check the rear panel power supply label for the correct AC mains voltage setting.
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CONNECTIONS: Use audio connectors and cables only for their intended purpose. Do not connect any
source of AC or DC power to the console audio inputs and outputs. Do not connect the
output of power amplifiers directly to the console.
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VENTILATION:
Do not cover the unit in any way. Position the unit in a well ventilated location in the
rack.
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CLEANING:
Avoid the use of chemicals, abrasives and solvents. The control panel is best cleaned
with a soft brush and lint-free cloth.
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LUBRICATION:
The switches and potentiometers are lubricated for life. The use of electrical
lubricants on these parts is not recommended.
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DIRT, DUST, SMOKE and MOISTURE: Prevent damage to the moving parts, such as switches and
potentiometers, and cosmetics by avoiding drinks spillage, tobacco ash and smoke, and
exposure to rain and condensation. Protect from excessive dirt, dust, heat and
vibration.