1、BSI BS*k4742: PART*& 90 W Lb24bb9 0052082 k4 BRITISH STANDARD Hydraulic equipment for agricultural machinery Part 8. Method for colour coding of remote hydraulic power services and controls on agricultural tractors Equipements hydrauliques pour matriels agricoles Te2 8. FkrbkennzeicMung von Partie 8
2、. Mthode de codage par couleurs des services et commandes hydrauliques distance des tracteuis agricoles Hydraulische Ausrstung von Landmaschinen Fernbedienungsstelteiien an Ackerschleppern BS 4742 : Part 8 : 1990 UDC 631.372:629.114.2-578.4 d The preparation of this British Standard was entrusted by
3、 the Agricultural Machinery and Implements Standards Policy Committee (AGE/-) to Tchnical Committee AGE/32, upon which the following bodies were represented: AFRC Institute of Engineering Research Agricultural and Allied Workers National Trade Group Agricultural Engineexs Association British Fluid P
4、ower Association Department of Transport Fertilizer Manufacturers Association Ltd. Health and Safety Executive Local Authority Organizations Ministry of Agriculture, Fisheries and Food National Fanners Union Silsoe College BSI BS%4742: PARTx8 90 m Lh24bb9 0052084 B m BS 4742 : Part 8 : 1990 Contents
5、 fige Committees responsible Inside front cover Foreword 2 Method 1 Scope 3 2 Definition 3 3 Colour and symbol coding 3 4 Location of coding and symbols 3 6 Double acting services 3 Figure 1 Example of coding dual transparency for window-mounting 3 _ - _. _. BSI BSa47Y2: PARTaA 90 = Lb24bb9 0052085
6、T BS 4742 : Part 8 : 1990 Foreword This British Standard has been prepared under the direction of the Agricultural Machinery and Implements Standards Policy Committee. Most agricultural tractors are fitted with remote power services, each controllable either mechanically or electrically by the opera
7、tor from the normal seated position on the vehicle. Modern use of colour codes and symbols for the identification of the relation of power services to individual controls has highlighted the need for standardization in this area. Compliance with a British Standard does not of itself confer immunity
8、from legal obligations. - 7 I BSI BS*q742: PART*8 90 Lb2Llbb9 0052086 L BS 4742 : Part 8 : 1990 Method 1 Scope This Part of BS 4742 describes it method of identification for the controls for up to four remote hydraulic power services through the use of colour codes and symbols. NOTE. The titles of t
9、he publications referred to in this standard are listed on the inside back cover. 2 Definition For the purposes of this British Standard, the following definition applies. remote hydraulic power service. A controllable source of hydraulic power external to the tractor to which hydraulically operated
10、 devices can be connected, generally via quick release fluid couplings. Such power services are normally each provided with two couplings, one for feed/lift and the other for returddrop. This definition includes both single acting or double acting (reversible) services. 3 Colour and symbol coding Th
11、e controls shall be individually colour coded and marked with a symbol. The colours and symbols shall be as follows: Symbol Colour I Green II Blue III Brown IIII Black NOTE 1. Where only one service is provided colour coding is optionai. NOTE 2. The numeral symbols are included in this standard to a
12、ssist operators who may have difficulty in differentiating between colours. NOTE 3. An example of coding dual transparency for window- mounting is given in figure 1. 4 Location of coding and symbols 4.1 Control actuators The surface of the control on which the operator applies the actuation force sh
13、all be colour coded. The symbol shall be placed as close to the control as possible preferably in association with the pictorial which indicates the individual directional functions of the control. 4.2 Service outlets It shall be possible for the operator to identify, from both the control operating
14、 position on the vehicle and when standing outside the vehicle while coupling the external hydraulic lines, the colour code and symbol identification for each service, From the latter position, each colour coded control shali be visible. 5 Double acting services For double acting services it shall b
15、e possible to identify by colour coding related pairs of outlets. I II 1-1 III IIII Figure 1. Example of coding dual transparency for window-mounting BSI BS*4742:. PART*8 90 m 3624bb 0052087 3 i BS 4742 : Part 8 : 1990 Publication referred to BS 381C Specification for colours for identification, cod
16、ing and special purposes Previous page is blank I. BS 4742 : Part 8 : 1990 BSI 2 Park Street London W1A 2BS BSI Linford Wood Milton Keynes MK14 6LE BSI BSX4742: PARTJB 90 Lb24bb9 00520AA 5 I I BSI - British Standards Institution BSI is the independent national body responsible for preparing British
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