AS 3856.1:2021 Hoists and ramps for people with disabilities – Vehicle mounted Part 1: Product requirements.
4 Type A, Type B, Type C and Type D ramps and hoists
4.1 Material, design and construction requirements
All hoists and ramps shall be designed and constructed such that the following requirements are met:
(a) All controls, for lowering and raising, shall be easily accessible and operable by the operator.
(b) Those components susceptible to wear and tear, e.g. pins, shafts and connections, shall be accessible for maintenance and replacement.
(c) All metal parts not made of corrosion-resistant material shall be protected against corrosion.
(d) Power operated systems necessary for exit from the vehicle shall incorporate a manual override in case of power failure.
(e) If the hoist assembly and its controls are housed within the vehicle, all housings, switches and connector housings shall conform to IEC 60529 lP code 52. I-foist components permanently mounted outside of the vehicle shall conform to IEC 60529 IP code 54.
4.2 Enclosure integrity
Exposed enclosures for electrical circuitry shall meet the requirements of Clause G.6.3.8.
4.3 Hydraulic equipment
All components that contain working fluid shall have a burst pressure which is not less than three times the normal design maximum working pressure. A pressure relief valve shall be fitted to ensure that three times the maximum working pressure is not exceeded.
4.4 Manually operated folding mechanisms
Manually operated folding mechanisms shall conform to the following:
(a) Manually deployed appliances shall have a handhold to deploy and store the appliance.
(b) The force required for any manual folding and unfolding operations shall be not more than 60
N applied at the handhold.
4.5 Control systems
Control systems shall conform with the following:
(a) Hoist assembly including the control system shall be tested in accordance with Appendix F.
(b) Audible noise requirements shall be assessed in accordance with AS/NZS ISO 7176.14.
(c) Power circuits shall be —
(i) protected with a rated current overload device (e.g. fuse) in accordance with AS 3856.2; and
(ii) fitted with an operator accessible isolation switch, in accordance with Table 4.1.
(d) EMC testing for radiation immunity and general EMC shall be in accordance with UN Rio.
(e) Power-operated systems shall actuate a braking function when a control device is released.AS 3856.1 pdf download.