ISO 21628:2020 pdf download Gardening machinery — Powered material-collecting systems — Safety
1 Scope
This document gives safety requirements and the means for their verification specific to the designand construction of powered material-collecting systems used in agriculture, gardening and areamaintenance (such as landscaping). lt is applicable to mounted, semi-mounted or trailed machinesmanufactured after the date of its publication.
This document specifies means for eliminating or reducing mechanical hazards when the material-collecting system is used as intended.
lt does not deal with environmental hazards, road safety, electromagnetic compatibility, power take-off(PTO), PTO drive shaft guarding or control requirements.
This document is not applicable to machines within the scope of lSo 5395-2 or ISO 5395-3.
2Normative references
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references, only the edition cited applies.Forundated references, the latest edition of the referenced document (including any amendments) applies.ISo 730, Agricultural wheeled tractors —Rear-mounted three-point linkage —Categories 1N,1,2N, 2,3N,3,4N and 4
ISO 2332,Agricultural tractors and machinery —Connection of implements via three-point linkage 一Clearance zone around implement
ISO 3600，Tractors，machinery for agriculture and forestry, powered lawn and garden equipment 一Operator’s manuals —Content and format
ISO4413,Hydraulic fluid power —General rules and safety requirements for systems and their components
IS0 11684,Tractors, machinery for agriculture and forestry,powered lawn and garden equipment—Safetysigns and hazard pictorials —General principles
IS0 12100:2010, Safety of machinery —General principles for design —Risk assessment and risk reductionISO 13857:2019, Safety of machinery — Safety distances to prevent hazard zones being reached by upperand lower limbs
IS0 13849-1, Safety of machinery —Safety-related parts of control systems — Part 1: General principlesfor design
3Terms and definitions
For the purposes of this document, the following terms and definitions apply.
IlSO and IEC maintain terminological databases for use in standardization at the following addresses:-ISo online browsing platform: available at https://www.iso.org/obp
—IEC Electropedia: available at http://www.electropedia.org/
3.1
material collecting system
mounted, semi-mounted or trailed machine used to collect grass and leaves by means of a vacuumprovided by a blower
Note 1 to entry:The collected material can include other organic or non-organic material present as debris on theworking area.
3.2
inlet device
opening of the blower casing at the suction side to which the suction hose or pipe is connected3.3
discharge chute
opening of the blower casing allowing the transport of the material from the blower to the hopper3.4
normal operation and service
intended use of the machine in compliance with the information for operation,service and safe practices
4 Safety requirements
4.1 Fundamental principles, design guidance
The machine shall be designed according to the principles of risk reduction specified in ISO 12100:2010,Clause 5, for hazards relevant but not significant.
Unless specified otherwise in this document,openings and relative safety distances shall be inaccordance with IS0 13857:2019, Tables 1,3,4 and 6.
4.2Access to the blower
4.2.1Suction (inlet) side
The suction hose or pipe shall be fixed to the inlet device.The removal of the suction hose or pipeshall not be possible except by using a tool.The operator’s manual shall include information about theremoval of blockages [see 5.1.2e)].
4.2.2 Discharge chute opening
4.2.2.1 The maximum size of the discharge chute opening shall be 625 cm2.
4.2.2.2 To prevent access to hazardous parts of the blower, the machine shall comply with at least oneof the following:
a) The minimum distance between the discharge chute opening and the outer contour of the blowershall be 850 mm.
The safety distance is measured as chain measurement.
b)The minimum distance between the contour or parts of the machine restricting access to the
blower and the outer contour of the blower shall be 850 mm. This requirement shall be verifiedusing the arm test probe shown in Figure 1.The probe shall be applied in all directions in whichthe operator’s arm could be used and in the shaded area shown in Figure 2. ISO 21628:2020 pdf download