EN 709:1997/FprA4

SLOVENSKI STANDARD
SIST EN 709:1998/oprA2:2007
01-december-2007
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Agricultural and forestry machinery - Pedestrian controlled tractors with mounted rotary
cultivators, motor hoes, motor hoes with drive wheel(s) - Safety
Ta slovenski standard je istoveten z: EN 709:1997/prA2
ICS:
65.060.10 Kmetijski traktorji in prikolice Agricultural tractors and
trailed vehicles
65.060.20 Oprema za obdelovanje tal Soil-working equipment
SIST EN 709:1998/oprA2:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
EN 709:1997
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA2
September 2007
ICS 65.060.10; 65.060.20
English Version
Agricultural and forestry machinery - Pedestrian controlled
tractors with mounted rotary cultivators, motor hoes, motor hoes
with drive wheel(s) - Safety
Matériels agricoles et forestiers - Motoculteurs avec fraises
portées, motobineuses et fraises à roue(s) motrice(s) -
Sécurité
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 144.
This draft amendment A2, if approved, will modify the European Standard EN 709:1997. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.
This draft amendment was established by CEN in three official versions (English, French, German). A version in any other language made
by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 709:1997/prA2:2007: E
worldwide for CEN national Members.

EN 709:1997/prA2:2007 (E)
Contents Page
Foreword.3
1 Modification to Clause 3 .4
2 Modification to Clause 5.3 .4
4 Modification to Clause 5.5 .4
5 Modification to Clause 5.11 .6
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EC Directive 2006/42/EC, Machinery Directive.10
EN 709:1997/prA2:2007 (E)
Foreword
This document (EN 709:1997/prA2:2007) has been prepared by Technical Committee CEN/TC 144 “Tractors
and machinery for agriculture and foresrty”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EC Directive(s).
For relationship with EC Directive(s), see informative Annex ZA, which is an integral part of this document.
EN 709:1997/prA2:2007 (E)
1 Modification to Clause 3
Add the following new definition:
"3.7
maximum operating engine speed
highest engine speed obtainable when adjusted in accordance with the machine manufacturer’s specifications
and/or instructions with the tools engaged
NOTE Adapted from EN 836:1997 and EN 12733:2001."
2 Modification to Clause 5.3
rd
Between the 3 and the last paragraph, add the following text:
"An engine stopping device shall be provided."
4 Modification to Clause 5.5
st
At the end of the 1 paragraph add the following text and the new Figure 3 and Figure 4 and renumber the
following figures:
“Releasing the hold-to-run control(s) shall not stop the engine. For electrical powered machines, this
requirement does not apply.
The force required to maintain the hold-to-run control in engaged position shall not exceed 25 N when the
hold-to-run control is located on only one handlebar.
If the hold-to-run control is located so that it can be operated by either, or both, hands when they are holding
the handle-grips the force required to maintain the hold-to-run control in the engaged position shall not exceed
30 N.
The measuring of these values shall be carried out with the following method:
The Measurement shall be performed with a device having an accuracy of ± 0,5% (e.g. dynamometer) with
the engine stopped. The force (F) required to maintain the hold-to-run control shall be measured at 10 mm
from the end of the hold-to-run control. The hold-to-run control is pressed on the handlebar/handle-grips, see
Figure 3.
NOTE The values of 25 N and 30 N are under evaluation by WG 4.
EN 709:1997/prA2:2007 (E)
Figure 3a
Figure 3b
Figure 3c
Key
1 free end of the hold-to-run control
F force required to maintain the hold-to-run control
Figure 3 – Locations of the force F
EN 709:1997/prA2:2007 (E)
The hold-to-run control shall be designed or guarded so that the tool or wheels can not move without
intentional action (e.g. a manual control requiring two different action to be operated). This requirement shall
be verified by functional test. This requirement shall not be applied if the hold-to-run control is located below
the handle-grip (see Figure 4).

Figure 4 – Example of hold-to-run control located below the handle-grip"
5 Modification to Clause 5.11
Delete 5.11 and replace with the following text:
"5.11.1 General
For pedestrian controlled tractors a service and parking brake systems shall be provided to stop the
pedestrian controlled tractor’s motion in both forward and reverse directions, if a force of more than 250 N,
applied at the centre of the wheel axle and parallel to the slope, is required to hold the pedestrian controlled
tractor, with the tool touching the ground, on a 30 % (16,7°) slope.
NOTE The 250 N value is under evaluation by WG 4.
Service and parking brake systems shall be tested in accordance with 5.11.2 and 5.11.3.
For the test the pedestrian controlled tractor shall be equipped with the tyres recommended by the
manufacturer having the least tread area in contact with the test surface.
If steering-assist brakes are also used for service brakes, it shall be possible to connect them in a way that
they apply both brakes with equal force.
If the pedestrian controlled tractor is equipped with steering brakes, these shall be capable of being combined
or activated simultaneously.
5.11.2 Service brake
5.11.2.1 Perf
...