CSA B355-2019 Platform lifts and stair lifts for barrier-free access. Guard — a substantially constructed protective cover designed to prevent accidental contact with a potential hazard. Guide rails — metal members formed into a suitable section or arrangement to retain and guide the carriage during its motion in the course of its travel. Hydraulic drive (System) — a machine in which energy Is applied by means of a fluid under pressure in a cylinder equipped with a plunger or piston. Levelling — the controlled carriage movement towards the landing, within the levelling zone, by means of a levelling device that vertically aligns the carriage level relative to the landing level. Levelling device — any mechanism that will move the carriage within the levelling zone towards the landing. Levelling device, anti-creep — a levelling device used on hydraulic lifts to correct automatically a change in carriage level caused by leakage or contraction of fluid in the hydraulic system. Levelling device, automatic — a device that corrects the carriage level on both underrun and overrun, and maintains the level during loading and unloading. Levelling zone — the limited distance above or below a landing level, within which the levelling device is permitted to cause movement of the carriage towards the landing. Lift — a generic term covering all special lifts for platform lifts and stair lifts, as listed in Clause 1.2. Load-carrying unit — see Carriage. Luminaire — a complete lighting unit designed to accommodate the lamp(s) and to connect the lamp(s) to circuit conductors. Maintenance — process of routine examination, lubrication, cleaning, adjustment, and replacement of parts for the purpose of ensuring performance in accordance with the applicable code requirements. Nut, driving — an internally threaded component that acts in conjunction with a screw to produce linear motion of the carriage, e.g., a rotating screw engaging with a fixed nut or a recirculating ball nut. Pendant control — a handheld operating device (which may be removable), electrically connected to the lift, to be used by an attendant. Person with a physical disability — a person having limited mobility because of a physical disability. Pinion — a wheel with machine-cut teeth specially designed to engage with those of similarly toothed wheels or racks, used to transmit relative motion. Platform — a flat and substantially horizontal structure that is part of the carriage and that supports a user or users.CSA B355 pdf download.
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