Hochiki DRD-E - Manual (Page 11)

DRD-E Flame Detector Installation Manual Page 11 of 12
© 2010 Hochiki Europe (UK) Ltd
2-3-0-1376/ISS1/NOV10
4.1 Functional Testing
A portable flame detector test unit is available to generate simulated flame behaviour (Fig 10.). To test the
detector, the test unit needs to be within 600mm of the DRD-E flame detector. The DRD-E incorporates a 15
second delay to help filter out any transient IR sources that may occur. Between each test the DRD-E flame
detector will need to be left for minute to allow for stabilisation.
If it is safe to do so, a naked flame could also be used to test the DRD-E flame detector, please ensure that
the flame is not exposed directly to the outer casing or lens as damage may occur.
Fig 10 : Portable Flame Detector Test Unit
4.2 Service & Repairs
Servicing of the fire protection system should be carried out by competent persons familiar with this type of
system, or as recommended by the local regulations in force.
Only the manufacturer or equivalent authorised body may carry out repairs to the flame detectors. In
practical terms this means that flame detector may be repaired only at the manufacturer’s factory.
< 600mm