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MEDC DB4 Technical Manual

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Technical Manual for the Speaker DB4
Please note that every care has been taken to ensure the accuracy of our technical manual. We do not, however, accept
responsibility for damage, loss or expense resulting from any error or omission. We reserve the right to make alterations
in line with technical advances and industry standards.
© Cooper MEDC 2011
01/12

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Summary of Contents for MEDC DB4

  • Page 1 Technical Manual for the Speaker DB4 Please note that every care has been taken to ensure the accuracy of our technical manual. We do not, however, accept responsibility for damage, loss or expense resulting from any error or omission. We reserve the right to make alterations in line with technical advances and industry standards.
  • Page 2 01/12 © Cooper MEDC 2011...
  • Page 3 Ensure that only the correct listed or certified stopping plugs are used to blank off unused gland entry points and that the NEM /IP rating of the unit is maintained. MEDC recommend the use of a sealing compound such as HYLOM R PL32 on the threads of glands and stopping plugs in order to maintain the IP rating of the unit.
  • Page 4 If the unit requires cleaning, then only clean exterior with a damp cloth to avoid electro-static charge build up. Repairs should be undertaken by returning the unit to MEDC or by an authorised repairer of Ex equipment. If a unit fault should occur, then the unit can be repaired by MEDC.
  • Page 5 Functional Safety The DB4 Speaker is intended for use in a safety system conforming to the requirements of IEC61508. Sira Test & certification Ltd has conducted a Failure Modes Effect and Diagnostic nalysis (FMED ) of the DB4 Speaker unit against the requirements of IEC61508-2 using a proof test interval of 8760hrs.
  • Page 6 (e.g., IEC 60300-3-2) and reported to the manufacturer. The unit should be tested at regular intervals to identify any malfunctions; in accordance with this safety manual. MEDC Stock No. TM105-ISS. B Web: 01/12 © Cooper MEDC 2011...
  • Page 7 © Cooper MEDC 2011 01/12...
  • Page 8 Cooper MEDC Ltd, Colliery Road, Pinxton, Nottingham NG16 6JF, United Kingdom. Tel: +44 (0)1773 864100 E-Mail: medc.sales@cooperindustries.com • medc.orders@cooperindustries.com MEDC Stock No: TM105-ISS.B Web: www.coopermedc.com 01/12 © Cooper MEDC 2011...