AS 2671-2002

1 - AS 2671-2002 HYDRAULIC FLUID POWER-GENERAL REQUIREMENTS FOR SYSTEMS (ISO 4413:1998, MOD)
4 - PREFACE
7 - CONTENTS
8 - INTRODUCTION
9 - 1 Scope
9 - 2 Normative references
11 - 3 Definitions
11 - 3.1 actuator:
11 - 3.2 commissioning:
11 - 3.3 component:
12 - 3.4 control mechanism:
12 - 3.5 emergency control:
12 - 3.6 function plate:
12 - 3.7 operating device:
12 - 3.8 piping:
12 - 3.9 purchaser:
12 - 3.10 supplier:
12 - 3.11 system:
12 - 4 Requirements
12 - 4.1 General
12 - 4.1.1 Instructions
12 - 4.1.2 Language*
12 - 4.2 Hazards*
13 - 4.3 Safety requirements
13 - 4.3.1 Design considerations
13 - 4.3.2 Component selection
13 - 4.3.3 Unintended pressures
13 - 4.3.4 Mechanical movements
14 - 4.3.5 Noise
14 - 4.3.6 Leakage
14 - 4.3.7 Temperature
14 - 4.4 System requirements*
15 - 4.5 Site conditions*
15 - 4.5.1 Specifications*
15 - 4.5.2 Drawings*
16 - 5 System design
16 - 5.1 Circuit diagrams
17 - 5.2 Identification
17 - 5.2.1 Components
17 - 5.2.2 Components within a system
17 - 5.2.3 Ports
18 - 5.2.4 Valve control mechanisms
18 - 5.2.5 Internal devices
18 - 5.2.6 Function plate
18 - 5.3 Installation, use and maintenance
18 - 5.3.1 Component replacement
19 - 5.3.2 Maintenance requirements
19 - 5.3.3 Lifting provisions
19 - 5.3.4 Component installation
19 - 5.4 Use of standard parts
19 - 5.5 Seals and sealing devices
19 - 5.5.1 Materials
19 - 5.5.2 Replacement
19 - 5.6 Maintenance and operating data
20 - 5.7 Operation and maintenance manuals
20 - 5.8 Ports
20 - 5.9 System temperature
20 - 5.9.1 Heat generation
21 - 5.9.2 Operating temperatures
21 - 6 Energy conversion components
21 - 6.1 Hydraulic pumps and motors
21 - 6.1.1 Protection
21 - 6.1.2 Mounting
21 - 6.1.3 Speed considerations
21 - 6.1.4 Drains, air bleeds and auxiliary ports
22 - 6.1.5 Pre-filling of housings
22 - 6.1.6 Working pressure range
22 - 6.1.7 Installation
22 - 6.2 Cylinders
22 - 6.2.1 Suitability for application
23 - 6.2.2 Mounting and alignment
24 - 6.2.3 Cushions and deceleration devices
24 - 6.2.4 Stroke end stops
24 - 6.2.5 Piston stroke
24 - 6.2.6 Piston rods
24 - 6.2.7 Maintenance
24 - 6.2.8 Single-acting cylinders
24 - 6.2.9 Replacement
24 - 6.2.10 Air entrapment
25 - 6.3 Gas-loaded accumulators
25 - 6.3.1 Identification
25 - 6.3.2 Requirements for hydraulic systems with gas-loaded accumulators
26 - 6.3.3 Installation
26 - 6.3.4 Maintenance
26 - 6.3.5 Discharge rate
27 - 7 Valves
27 - 7.1 Selection
27 - 7.2 Mounting
27 - 7.2.1 General
27 - 7.2.2 Line-mounted valves
27 - 7.2.3 Surface-mounted valves
28 - 7.2.4 Cartridge valves
28 - 7.3 Manifolds
28 - 7.3.1 Surface flatness and finish
28 - 7.3.2 Distortion
28 - 7.3.3 Mounting
28 - 7.3.4 Internal passages
28 - 7.4 Electrically operated valves
28 - 7.4.1 Electrical connections
28 - 7.4.2 Terminal block housings
29 - 7.4.3 Solenoids
29 - 7.4.4 Manual override
29 - 7.5 Symbol plates
29 - 7.6 Adjustments*
29 - 7.7 Removal
30 - 8 Fluids and conditioning components
30 - 8.1 Hydraulic fluids
30 - 8.1.1 Specification
30 - 8.1.2 Compatibility
31 - 8.1.3 Hydraulic and lubrication systems*
31 - 8.1.4 Maintenance
31 - 8.1.5 Filling and maintenance of fluid level*
31 - 8.2 Fluid reservoirs
31 - 8.2.1 Design
32 - 8.2.2 Construction
34 - 8.2.3 Accessories
34 - 8.3 Filtration and fluid conditioning
34 - 8.3.1 Filtration
34 - 8.3.2 Location and sizing of filters
35 - 8.3.3 Suction strainers or filters*
36 - 8.3.4 Magnets
36 - 8.4 Heat exchangers
36 - 8.4.1 Liquid-to-liquid heat exchangers
36 - 8.4.2 Liquid-to-air heat exchangers
37 - 8.4.3 Heaters
37 - 9 Piping
37 - 9.1 General requirements
37 - 9.1.1 Fluid flow
37 - 9.1.2 Use of fittings and connections
37 - 9.1.3 Design of layout
37 - 9.1.4 Piping location
38 - 9.1.5 Tube and hose connectors
38 - 9.1.6 Pressure rating of connectors
38 - 9.2 Pipe and tube requirements*
38 - 9.2.1 Steel tubes
38 - 9.2.2 Other tubes
38 - 9.3 Support of piping
38 - 9.3.1 Spacing
39 - 9.3.2 Installation
39 - 9.4 Foreign matter
39 - 9.5 Hose assemblies
39 - 9.5.1 Requirements
39 - 9.5.2 Installation
40 - 9.5.3 Protection against failure
40 - 9.6 Quick-action couplings
40 - 10 Control systems
40 - 10.1 Unintended movement
40 - 10.2 System protection
40 - 10.2.1 Unexpected start-up
40 - 10.2.2 Control or power supply failure
41 - 10.2.3 External loads
41 - 10.2.4 Fluid loss
41 - 10.3 Components
41 - 10.3.1 Adjustable control mechanisms
41 - 10.3.2 Stability
41 - 10.3.3 Tamper resistance
41 - 10.3.4 Manual control levers
41 - 10.3.5 Overriding manual controls
42 - 10.3.6 Two-hand controls
42 - 10.3.7 Spring biased or detent located valves
42 - 10.4 Control systems with servo and proportional valves
42 - 10.4.1 Override systems
42 - 10.4.2 Filter
42 - 10.4.3 System cleanliness
42 - 10.4.4 Additional devices
42 - 10.5 Other design considerations
42 - 10.5.1 Monitoring of system parameters
43 - 10.5.2 Test points
43 - 10.5.3 System interactions
43 - 10.5.4 Control of multiple devices
43 - 10.5.5 Sequence control
44 - 10.6 Location of controls
44 - 10.6.1 Protection
44 - 10.6.2 Accessibility
44 - 10.6.3 Manual controls
44 - 10.7 Emergency controls
44 - 10.7.1 Features of emergency controls
45 - 10.7.2 System restart
45 - 11 Diagnostics and monitoring*
45 - 11.1 Pressure measurement
45 - 11.2 Fluid sampling
45 - 11.3 Temperature sensing
45 - 12 Cleaning and painting
46 - 13 Preparation for transportation
46 - 13.1 Identification of piping
46 - 13.2 Packaging
46 - 13.3 Sealing of openings
46 - 13.4 Handling facilities*
46 - 14 Commissioning
46 - 14.1 Verification tests
46 - 14.2 Noise*
47 - 14.3 Fluid leakage
47 - 14.4 Final data to be provided*
47 - 14.5 Modifications
48 - 14.6 Inspection
48 - 15 Identification statement (reference to this International Standard)
49 - Annex A - Items requiring supplier/purchaser agreement
50 - Annex B - List of hazards
53 - Annex C - Cross reference list ISO 4413/EN 982
59 - Annex D - Bibliography
62 - Index
77 - APPENDIX ZZ - MODIFICATIONS TO ISO 4413:1998 FOR APPLICATION IN AUSTRALIA

Specifies requirements for the design and manufacture of hydraulic fluid power systems. This Standard is an adoption with Australian modifications and has been reproduced from ISO 4413:1998.

This International Standard provides general rules relating to hydraulic systems on machineryused in industrial manufacturing processes. It is intended as a guide for both suppliers andpurchasers, with a view to ensuring:a) safety;b) uninterrupted system operation;c) ease and economy of maintenance;d) long life of the system.

First published as AS 2671-1983.
Second edition 2002.