BS ISO 15871:2019 pdf free.Industrial trucks – Specifications for indicator lights for container handling and grappler arm operations.
4 Requirements 4.1 General To minimize the number of lights required, three conditions of the light are employed: “off”, “flashing” and “on”. 4.2 Freight-container-handling spreaders 4.2.1 General See 4.4.1 for location of indicator lights. See Table 1 for a tabular presentation of 4.2.2 and 4.2.3. 4.2.2 Twistlocks located in the freight container When all the twistlocks are fully located in the freight container corner pockets, orange light 0 shall be “on”. When the freight container is lifted, this light shall go “off”. 4.2.3 Twistlocks locked/unlocked When all the twistlocks are fully unlocked, the red light R shall be “on”. In any intermediate position of the twistlocks, the red light R may be “flashing”. Provision of this “flashing” red light is optional. When all the twistlocks are fully locked in the freight container corner pockets, the green light G shall be “on”.4.3 Grappler arms 4.3.1 General See 4.4.1 for location of indicator lights. See Table 2 for tabular presentation of 4.3.2.1 to 4.3.2.4. Normally indication by lights is only necessary for the front arms which are out of sight of the operator (for additional lights, see 4A). 4.3.2 Arms 4.3.2.1 Front arms fully up When both front arms are fully up, the white light W shall be “on”. 4.3.2.2 Front arms fully down and fully unclamped When both front arms are fully down and fully unclamped, the yellow light Y shall be “on”. 4.3.2.3 Front arms fully down and partially clamped When both front arms are fully down and neither clamped nor unclamped, the yellow light Y shall be “on” and the red light R may be “flashing”. Provision of this “flashing” red light condition is optional. 4.3.2.4 Front arms fully down and fully clamped When both arms are fully down, fully clamped and seated, the green light shall be “on”. 4.4.1.1 Indicator lights shall be mounted in a position visible to the operator from the normal operating
position. A non-reflective shield can be necessary.BS ISO 15871 pdf download.