MINIMUM REQUIREMENTS FOR CONFORMITY OF PRODUCTION CONTROL PROCEDURES
1. GENERAL
1.1.
The conformity requirements shall be considered satisfied from a mechanical and geometric standpoint, if the differences do not exceed inevitable manufacturing deviations within the requirements of this Regulation.
1.2.
With respect to photometric performances, the conformity of mass-produced headlamps shall not be contested if, when testing photometric performances of any headlamp chosen at random and equipped with a standard filament lamp, no measured value deviates unfavourably by more than 20 per cent from the values prescribed in this Regulation.
1.3.
If the results of the tests described above do not meet the requirements, tests on the headlamp shall be repeated, using another standard filament lamp.
1.4.
Headlamps with apparent defects are disregarded.
1.5.
The chromaticity coordinates shall be complied with when the headlamp is equipped with a filament lamp set to Standard A colour temperature.
The photometric performance of a headlamp emitting selective yellow light when equipped with a colourless filament lamp shall be the values contained in this Regulation multiplied by 0,84.
2. MINIMUM REQUIREMENTS FOR VERIFICATION OF CONFORMITY BY THE MANUFACTURER
For each type of headlamp the holder of the approval mark shall carry out at least the following tests, at appropriate intervals. The tests shall be carried out in accordance with the provisions of this Regulation.
If any sampling shows non-conformity with regard to the type of test concerned, further samples shall be taken and tested. The manufacturer shall take steps to ensure the conformity of the production concerned.
2.1. Nature of tests
Tests of conformity in this Regulation shall cover the photometric characteristics.
2.2. Methods used in tests
2.2.1.
Tests shall generally be carried out in accordance with the methods set out in this Regulation.
2.2.2.
In any test of conformity carried out by the manufacturer, equivalent methods may be used with the consent of the competent authority responsible for approval tests. The manufacturer is responsible for proving that the applied methods are equivalent to those laid down in this Regulation.
2.2.3.
The application of paragraphs 2.2.1 and 2.2.2 requires regular calibration of test apparatus and its correlation with measurements made by a competent authority.
2.2.4.
In all cases, the reference methods shall be those of this Regulation, particularly for the purposes of administrative verification and sampling.
2.3. Nature of sampling
Samples of headlamps shall be selected at random from the production of a uniform batch. A uniform batch means a set of headlamps of the same type, defined according to the production methods of the manufacturer.
The assessment shall in general cover series production from individual factories. However, a manufacturer may group together records concerning the same type from several factories, provided these operate under the same quality system and quality management.
2.4. Measured and recorded photometric characteristics
The sampled headlamp shall be subjected to photometric measurements at the points provided for in the Regulation, the readings being limited to points HV, LH, RH, L 600 and R 600.
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