ASME A18.1-2008 pdf free download.Safety Standard for Platform Lifts and Stairway Chairlifts
2.1.1.4 All doors shall be provided with a combi- nation mechanical lock and electric contact. Locking devices shall be protected against tampering from the landing side. The locking devices may permit a door to be opened only if the platform floor is within 50 mm (2 in.) of the respective landing.
They shall permit the platform to move away from the landing under control of the normal operating device if the door is closed but not locked, provided that the device will cause the platform to stop if it moves away from the landing more than 50 mm (2 in.) before the door is locked. Doors shall withstand, without permanent deformation, a force of 550 N (125 lbf) applied on any 100 mm (4 in.) by 100 mm (4 in.) area.
2.1.1.5 No hardware shall project beyond the vertical line of travel of the platform, except for that required for door locks.
2.1.1.6 The running clearance between the entrance and exit sides of the platform floor and the interior of the runway enclosures shall be not less than 10 mm (0.375 in.) nor more than 20 mm (0.75 in.).
2.1.1.7 Platform sides not used for entrance or exit shall be guarded by enclosure walls of smooth con- struction to a height of at least 1 100 mm (42 in.) above the platform floor with no openings other than those necessary for operation. Openings necessary for opera- tion shall reject a ball 12 mm (0.5 in.) in diameter.
A grab rail extending the full length ofeither sidewall shall be provided at a height of 850 mm (34 in.) to 1 000 mm (38 in.). The running clearance between platform enclo- sure walls that extend less than 2 000 mm (79 in.) above the platform floor and the runway enclosure walls, verti- cal face of the machine housing, or other rigid surfaces shall be not less than 50 mm (2 in.). The running clear- ance between platform enclosure walls that extend a minimum of 2 000 mm (79 in.) above the platform floor and runway walls or other surfaces shall be not less than 20 mm (0.75 in.). Running clearance between enclosure wall ends and the entrance and exit side of the runway shall be not less than 10 mm (0.375 in.) nor more than 75 mm (3 in.).
2.1.1.8 Ifthe runway enclosure extends to a mini- mum height of 2 100 mm (84 in.) above the upper landing, consists of transparent walls, is exposed to direct sunlight,andis enclosedwitha solid roof,forcedventilation with a minimum air handling capacity of one air change per minute based onnetinside enclosure volume shall be provided. The ventilation shall be permitted to be thermostatically controlled, in which case, it shall be set to activate at a temperature not to exceed 32°C (90°F). An auxiliary power source capable ofproviding the min- imum air handling capacity for 1 hr shall be provided. Ventilating fans or blowers, if used, shall be located outside the enclosure, or if inside the enclosure, provide a minimum headroom clearance of 2 100 mm (84 in.).
2.1.2 Partial Runway Enclosure Provided
2.1.2.1 The area under the platform shall be fully enclosed by smooth guards, either telescoping or sta- tionary, on all accessible platform sides. The guards shall withstand, without permanent deformation, a force of 550 N (125 lbf) applied on any 100 mm (4 in.) by 100 mm (4 in.) area. The height of stationary guards, if provided, shall be at least equal to the maximum upward travel of the platform floor plus 75 mm (3 in.). The running clearance between the platform enclosure walls and any stationary guard panel, vertical face of the machine housing, or other rigid surfaces shall be not less than 50 mm (2 in.). Shutter-type (telescoping) guards, if provided, shall be securely fastened to the lower landing level and to the platform. Openings necessary for operation of shuttertype (telescoping) guard panels shall reject a ball 12 mm (0.5 in.) in diameter. ASME A18.1 pdf download.ASME A18.1-2008 pdf free download
