Document ID: chunk:federal_register_of_legislation:F2023C00157:body:0:p12
Version: federal_register_of_legislation:F2023C00157
Segment Type: other
Provision Reference: 
Character Range: 30968–33800

and Regulation No. 45 included the 01 series of amendments. The capacity class is 50.

Annex 4

PROCEDURE FOR TESTING THE PERFORMANCE OF HEADLAMP CLEANERS

       1. General comments

         The tests shall be carried out in still air at an ambient temperature of 23 degrees C + 5 degrees C.

         During the various phases of the test, precautions shall be taken to avoid a thermal shock to the headlamp glass.

         If the manufacturer of the cleaning device has the intention to provide several positions of the cleaning device and the headlamps, only the headlamp in its worst position to the cleaning device must be tested. If a cleaning fluid is used the additional nozzles for the non-simulated side must be present on the test fixture for checking the fluid consumptions.

       2. Test equipment

       2.1. Test mixture

       2.1.1. For headlamp with the outside lens in glass:

         A mixture of water and polluting agent to be applied to the headlamp shall be composed of:

         9 parts by weight of silica sand with a particle size of 0-100 microns corresponding to distribution prescribed in paragraph 2.1.3,

         1 part by weight of vegetable carbon dust (beechwood) with a particle size of 0-100 microns,

         0.2 parts by weight of NaCMC 1/, and

         an appropriate quantity of distilled water with a conductivity of < 1 mS/m.

       2.1.2. For headlamp with the outside lens in plastic material:

         The mixture of water and polluting agent to be applied to the headlamp shall be composed of:

         9 parts by weight of silica sand with a particle size of 0-100 microns corresponding to distribution prescribed in paragraph 2.1.3,

         1 part by weight of vegetable carbon dust (beechwood) with a particle size of 0-100 microns,

         0.2 parts by weight of NaCMC [1/],

         5 parts by weight of sodium chloride (pure at 99%)

         13 parts by weight of distilled water with a conductivity of < 1 mS/m, and

         2 +/- 1 parts by weight of surface-actant.

Particle size (in microns)  Particle size distribution (in %)
0 to 5                      12 +/- 2
5 to 10                     12 +/- 3
10 to 20                    14 +/- 3
20 to 40                    23 +/- 3
40 to 80                    30 +/- 3
80 to 100                   9 +/- 3

       2.1.4. The mixture shall be fit for applying to the headlamp by the spray gun specified under 2.3 below. The mixture shall be used not earlier than two hours and not later than 24 hours after preparation. It shall be given into the gun immediately before use.

       2.2. The photometric measuring equipment shall be equivalent to that used in connection with the approval of headlamps.

       2.3. A power supply of sufficient capacity (during the cleaning period the voltage drop must not be