Caple CRG 902 SS Operations Instructions

Operating Manual Noise Activated Warning Sign GA902 www.castlegroup.co.uk

Page 6 Master Slave Wiring There are several different types of warning systems that may be put together using the GA902 meter and the GA902A slave u

Page 7 Master Driving Master A GA902 (master) may drive up to 10 GA902 master units such that if any master unit is on then all the masters will als

Page 8 Master Driving Dumb Masters A GA902 master may be converted to a dumb master by removing the 0R wire link from position R32 and replacing it

Page 9 Typical Complex System An example is shown below where there is a mixture of masters, dumb masters and slaves all connected together to form

Page 10 Accessories Master/Slave Driving a Mini Beacon Both the GA902 and the GA902A are capable of driving a small amber beacon which attaches to

Page 11 Master Driving a Remote Beacon The GA902 is also capable of driving a single free-standing remote beacon. This could be particularly useful

Page 12 Combinations A single GA902 Master is obviously limited by the amount of current it can supply to slaves and beacons. The table below outli

Page 13 Technical Specification Trip Range: 75dB to 112.5dB in 2.5dB steps switch selectable +5dB calibration control (factory set) Trip Time: 5 s

Page 14 Warranty and After Sales Service Castle Group Ltd design and manufacture precision instruments, which if treated with reasonable care and att

Page 15 Instrument Disposal The symbol shown here can be found on your instrument and means that the product is classed as electrical or electronic

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Copyright This manual is copyrighted with all rights reserved. Copying in part or in whole is prohibited without the prior written consent of Castl

Contents Introduction... 1 Instrument Description ...

Page 1 Introduction The Castle GA902 instrument is designed to provide a visual warning of high noise levels requiring some form of action. In its

Page 2 Installation Choose a suitable location for the GA902 ideally mounted close to the main noise source on the wall, in a position where operato

Page 3 Controls The GA902 is fitted with a TEST pushbutton which when pressed tests the PCB relay and the illumination of the lamps. Trip Settin

Page 4 PCB Identification The diagram below shows the position of the following components on the PCB. TRANSFORMER LK1 1 Amp

Page 5 Reconnect the power to test the unit. WARNING: THERE ARE MAINS VOLTAGES PRESENT INSIDE THE UNIT WHEN SWITCHED ON Trip Level Switch SW1