ECOTEST DKG-21 Operating Manual page 55

5.1.3.3.2 Procedure for pre-repair fault detection and rejection
The need to transfer the dosimeter for repair and the type of repair is
determined by the following criteria:
- for mid-life repair:
a) deviation of parameters from control values during periodic
verification of the dosimeter;
b) minor defects of the dLCD that do not affect the correct readings of
measurement results;
c) the lack of sound and light alarm;
- for major repair:
a) failure of the measurement channel;
b) defects of the dLCD that affect the correct readings of measurement
results;
c) serious mechanical damage to the parts that affect the security access
to the dosimeter's circuit.
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