BS EN 703 pdf free download

BS EN 703:2021 pdf free download.Agricultural machinery一Safety一Silage loading, mixing and/or chopping and distributing machines.
4.1.11 Uncontrolled movements
EN ISO 4254-1:2015, 4.9 and 4.5.2 apply.
4.1.12 Roll-over and tip-over
EN ISO 4254-1:2015, 5.7 apply.
4.1.13 Means olaccess
EN ISO 4254-1:2015, 4.7,4.8 and 5.1 apply.
4.1.14 Falling or ejected objects or fluids
EN ISO 4254-1:2015, 4.13 applies.
4.2 Location of the manual controls
4.2.1 General
In addition to EN ISO 4254-1:20 15, 4.5, the following requirements apply.
It shall not be possible for the operator, when inside the mixing and/or chopping chamber(s), to reach the manual controls.
The manual controls shall be located such that it is not possible for the operator to reach unguarded mobile working tools while actuating the control. This requirement is considered met for mounted machines when the distance between the manual controls and any unguarded mobile working tools in operation is more than 850 mm.
In the case of two-hand controls, they shall comply with EN ISO 13851:2019 and be positioned such that it is not possible to reach unguarded mobile working tools during the run-down time, in compliance with EN ISO 13855:2010.
For mounted, semi-mounted or trailed machines, when controls require actuation from the driver’s station, these controls shall be designed so that the operator can reach them, for example by means of an adjustable position of the controls or controls that can be situated inside the tractor (including tractor in built controls).
Verification: shall be by measurement and inspection.
Where there is more than one control position, the control system shall be designed in such a way that
the use of one of them precludes the use of the others, except for stop controls and emergency stops.
Stop controls shall have priority over the start controls.
Mixing and/or chopping and distribution functions shall be controlled from the driver’s station only or
these functions shall be activated by a two-hand control on the machine.
4.2.2 Requirements for hold-to-run controls
The control for the activation and the lowering of the cutting and loading tools and of the loading door shall be of the hold-to-run type.
4.2.3 Additional requirements for manual controls
The manual controls of powered cutting and loading tools (rotary and oscillating cutter or knives) as well as of the loading door shall be designed or guarded so that the tools and the loading door cannot move without intentional action (e.g. a manual control requiring two different actions to be operational, remote control box with protection rail around the manual controls).
Verification: shall be by inspection and functional test.
The location of the manual control(s) of cutting and loading tools or loading door shall be such that when the operator actuates these from the work station or the driver’s station, there is visibility on the work area of cutting and loading tools or the loading door in accordance with 4.3.
Verification: shall be by inspection, measurement and function test in accordance with 4.3.
When the machine is travelling, it shall be possible to actuate controls for mixing and/or chopping and distribution only from the driver’s station.
Verification: shall be by function test.
4.3 Visibility
4.3.1 For work area of the cutting, loading tools and loading door located at front of the machine
The visibility is considered to be adequate when the operator, from his driver’s and work station, can see the work area of the cutting, loading tools and the loading door over their whole width, including any lateral entrapment zones. This work area extends from the highest working position to a height of 1 m or less from the ground when the machine is in its loading position and:
— for self-propelled machines, at 200 mm measured from the edge of the cutting and loading tools (see Figure 1).
When direct visibility is not achieved from the driver’s station, machines with cutting and loading tools at the front of the machine shall be fitted with devices such as mirrors or closed circuit television (CCTV) which ensure indirect visibility.
Verification: shall be by measurement.
Verification is achieved with the tools in the raised position. The position of the operator’s eye is determined as shown In Figure 1. A lateral displacement of the eye of the operator Is allowed within ± 300 mm from the medium position.BS EN 703 pdf download.