OpenLegislation

Appendix 1

United Kingdom

Original text. Later amendments are not shown.

Examples of pneumatic simulators

1.

Setting the Simulator

2.

Testing the Trailer

A

  • supply connection with shut-off valve

    • C1

  • pressure switch in the simulator, set at 65 kPa and at 490 kPa

    • C2

  • pressure switch to be connected to the brake actuator of the towed vehicle, to operate at 75 per cent of the asymptotic pressure in the brake actuator CF

    • CF

  • brake cylinder

    • L

  • line from orifice O up to and including its coupling head TC, having an inner volume of 385 ± 5 cm3 under a pressure of 650 kPa

    • M

  • pressure gauge

    • O

  • orifice with a diameter of not less than 4 mm and not more than 4,3 mm

    • PP

  • pressure test connection

    • R1

  • 30 litre air reservoir with drain valve

    • R2

  • calibrating reservoir, including its coupling head TC, to be 385 ± 5 cm3

    • R3

  • calibrating reservoir, including its coupling head TC, to be 1 155 ± 15 cm3

    • RA

  • shut-off valve

    • TA

  • coupling head, supply line

    • V

  • braking system control device

    • TC

  • coupling head, control line

    • VRU

  • emergency relay valve

    • 3.

    Example of a simulator for electric control lines

    ECL

  • Electric Control Line corresponding to ISO 7638:2003

    • SIMU

  • Simulator of Byte 3,4 of EBS 11 according to ISO 11992:2003 with output signals at start, 65 kPa and 650 kPa

    • A

  • Supply connection with shut-off valve

    • C2

  • Pressure switch to be connected to the brake actuator of the towed vehicle, to operate at 75 per cent of the asymptotic pressure in the brake actuator CF

    • CF

  • Brake cylinder

    • M

  • Pressure gauge

    • PP

  • Pressure test connection

    • TA

  • Coupling head, supply line

    • VRU

  • Emergency relay valve