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Warranty and After Sales Service 

 

Castle  Group  Ltd  design  and  manufacture  precision  instruments,  which  if 
treated  with  reasonable  care  and  attention  should  provide  many  years  of 
trouble  free  service.    In  the  event  of  a  fault  occurring,  during  the  warranty 
period, the instrument should be returned to Castle Group Ltd, in its original 
packaging, or to an authorised agent.  Please enclose a clear description of 
the fault or symptom. 
 
Details  of  the  warranty  cover  are  available  from  Castle  Group  Ltd  or  an 
authorised agent. 
 
All  instruments  are  designed  to  meet  rigid  British  and  International 
Standards.  An annual calibration is recommended to ensure that these high 
standards  are  maintained.  This  is  particularly  important  for  cases  in  which 
instrument readings are to be used in litigation or compliance work. 
 
For warranty and service return to: - 
 
The Service Department 
Castle Group Ltd 
Salter Road 
Cayton Low Road Industrial Estate 
Scarborough 
North Yorkshire 
YO11 3UZ 
 
Telephone:  +44 (0)1723 584250   
Fax:   

+44 (0)1723 583728 

Email:  

[email protected] 

Web:   

www.castlegroup.co.uk 

 
Any misuse or unauthorised repairs will invalidate the warranty. 
 

 

 

Instrument Details 

 

For  your  records  and  for  future  correspondence  with  Castle  Group  Ltd 
regarding your instrument, please complete the following details: - 

 

Instrument Model 

 

Instrument Serial Number 

 

 

 

 

Purchase Date 

 

 

Summary of Contents for Electronic Orange GA904

Page 1: ...www castlegroup co uk Operating Manual Electronic Orange GA904...

Page 2: ...ics itself If you would like to become a competent person in the eyes of the law then you may like to know more about our Competent Persons training course for Noise at Work Regulations You can visit...

Page 3: ...Do not allow any conductive objects such as wire or metal particles to enter the unit Do not try to disassemble the instrument or attempt any repairs as this will invalidate your warranty Take a note...

Page 4: ...4 Wiring to the Orange Beacon 5 Auxiliary Contact Wiring 5 Power Wiring to the GA904 5 AC DC Power Output Wiring 6 Controls 7 Operating Modes 7 Displays 8 Calibration and Set UP 8 Calibration RV1 8 Tr...

Page 5: ...ntertainment Noise Controller in 1971 since then it has become an industry standard recommended by many Local Authority Environmental Health Officers The GA904 has been developed from the original Noi...

Page 6: ...ause of a cut off is clearly indicated by the Level Microphone and External indicators Installation WARNING THE GA904 SHOULD BE WIRED TO THE MAINS POWER SUPPLY BY A QUALIFIED ELECTRICAL INSTALLATION E...

Page 7: ...by Castle Group Ltd with each switch Duplicates are not kept by or available from Castle Group Ltd f Microphone mounting clip g Padlock for added security NB Two keys are supplied by Castle Group Ltd...

Page 8: ...ver a club bar where shouting customers or applause could be unrepresentative of the overall sound level in the room The microphone should be mounted on a vibration free mounting such as the microphon...

Page 9: ...act feature is not used The link should be removed if a door switch is used Power Wiring to the GA904 No additional items are required if the control box can be conveniently wired into the mains circu...

Page 10: ...Wiring These signals are available for connecting chart recorders tape recorders or external displays etc The connections are as follows J10 1 12 J10 2 0V J10 3 12V J10 4 AC Output J10 5 DC Output J10...

Page 11: ...lay This delay time is user adjustable between 1 to 10 seconds When the power is restored a mute function prevents the unit from a further trip for 20 seconds from the beginning of the trip period Thi...

Page 12: ...ge The beacon will warn the operators when the trip level is approached Calibration and Set Up Although the GA904 will have been calibrated at the factory before despatch it may need slight adjustment...

Page 13: ...uency weighting characteristics Trip Level SW3 This switch is used to set the trip level from 75dB to 112 5dB in 2 5dB increments Warning Level SW4 This switch is a four way slide switch selects when...

Page 14: ...O 80 X X O X 82 5 X X O O 85 X O X X 87 5 X O X O 90 X O O X 92 5 X O O O 95 O X X X 97 5 O X X O 100 O X O X 102 5 O X O O 105 O O X X 107 5 O O X O 110 O O O X 112 5 O O 0 0 O Open Up X Closed Down...

Page 15: ...Page 11 PCB Identification The diagram below shows the position of the following components on the PCB...

Page 16: ...ad OPERATING MODE Manual When tripped unit must be manually reset Auto When tripped unit automatically resets after trip time Override Power output is maintained even during trip condition Manual Auto...

Page 17: ...0 10m Microphone Cable 01ZL1011 20 20m Microphone Cable 01ZL1011 30 30m Microphone Cable 01MK376PXLR Microphone assembly for GA904 70MIS01730 Microphone Stand 01MC1 Microphone Clip 70MIS01510 Plastic...

Page 18: ...nd International Standards An annual calibration is recommended to ensure that these high standards are maintained This is particularly important for cases in which instrument readings are to be used...

Page 19: ...disposal of your product To find the nearest UK waste recycling point in your area enter your postcode in the website www recycle more co uk For more information please contact your local authority th...

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