Fault Finding; Removal Of The Electronics; Diagnostics - Dräger Flame 5000 Technical Manual

Fault Finding

Removal of the Electronics

There are no user replaceable parts within the electronic module, any attempt to repair or dismantle the electronic sub-
assemblies will void the warranty. If any fault is suspected within the electronics module the module is to be returned
to Dräger Safety UK Ltd for investigation and repair if required.

Diagnostics

It is impossible to provide fault diagnostics for every possible detector fault. In all cases it is advised that the following
best practises are followed:
• Only make one change at a time (changing more than one part at a time makes diagnosis very diffi cult)
• Check the most obvious possible causes fi rst
• Work systematically through the problem
• Keep good notes on the original problem, each step taken and the results observed
Power Supply
If the detector LED indicator is OFF then there may be a power supply fault. When investigating power supply faults
it is important to check that all voltages are within the detectors operating range (18V - 32V) under full load conditions
as the voltages measured under no load conditions can be misleading.
Live Video Images
The live video signal is susceptible to more potential problems than the alarm signals. The signal is an analogue
transmission and available for operator scrutiny. The cabling is critical to video image quality. Due to the nature of the
video signal, video corruption can appear diff erently on each detector/installation.
Fault Finding
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