3. A power-operated, temporarily installed builders’ hoist intended for use by persons who are permitted to enter engineering and construction sites, serving:
(i)defined landing levels, having a platform
— designed for the transportation of goods only
— which permits the access of persons during loading and unloading
— which permits the access and travel by authorised persons during erection, dismantling and maintenance
— guided
— travelling vertical or along a path within 15 degrees maximum of the vertical
— supported or sustained by: wire, rope, chain, screwed spindle and nut, rack and pinion, hydraulic jack (direct or indirect), or an expanding linkage mechanism
— where masts may or may not require support from separate structures, or
(ii)either one upper landing or a work area extending to the end of the guide (e.g. a roof), having a load-carrying device:
— designed for the transportation of goods only
— designed that there is no need to step on it for loading or unloading purposes or for maintenance, erection and dismantling
— from which persons are prohibited at any time
— guided
— which is designed to travel at an angle of at least 30 degrees to the vertical but may be used at any angle
— sustained by steel wire rope and a positive drive system
— controlled by constant pressure type controls
— which does not benefit from the use of any counterweight
— having a maximum rated load of 300 kg
— having a maximum speed of 1 m/s
— and where the guides require support from separate structures.