Standard
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AS 1735.4:2020
[Current]Lifts, escalators and moving walks, Part 4: Safety rules for the construction and installation of lifts — Electric and hydraulic service lifts
Identically adopts EN 81 3:2000+A1:2008, specifying safety rules for the construction and installation of permanently installed new electric service lifts with traction or positive drive, or hydraulic service lifts defined as lifting equipment, serving defined landing levels, having a car which is inaccessible, suspended by ropes or chains or supported by a ram and moving between rigid vertical guide rails or guide rails.
Published: 11/09/2020
Pages: 87
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Foreword
Introduction
1 Scope
1.1
1.2
1.3
1.4
1.5
2 Normative references
CEN/CENELEC standards
IEC standards
CENELEC Harmonization Documents
ISO Standards
3 Terms and definitions
4 Units and symbols
4.1 Units
4.2 Symbols
5 Service lift well
5.1 General provisions
5.1.1
5.1.2
5.1.3
5.2 Well enclosure
5.2.1
5.2.2 Inspection doors – Vertically hinged inspection traps
5.2.2.1
5.2.2.2
5.2.2.2.1
5.2.2.2.2
5.2.2.3
5.2.2.4
5.2.3 Ventilation of the well
5.2.4 Components inside the well
5.2.4.1
5.2.4.2
5.3 Walls, floor and ceiling of the well
5.4 Protection of any spaces located below the car, the counterweight or the balancing weight
5.5 Protection in the well
5.5.1
5.5.2
5.5.2.1
5.5.2.2
5.6 Headroom and pit
5.6.1 Top clearances for traction drive service lifts
5.6.1.1
5.6.1.2
5.6.2 Top clearances for positive drive service lifts
5.6.2.1
5.6.2.2
5.6.3 Top clearances for hydraulic service lifts
5.6.3.1
5.6.3.2
5.6.4 Pit
5.6.4.1
5.6.4.2
5.6.4.3
5.6.4.4
5.7 Exclusive use of the service lift well
6 Machine rooms
6.1 General provisions
6.1.1
6.1.2
6.1.3
6.2 Access
6.2.1 General
6.2.2 Inaccessible machine rooms
6.2.3 Accessible machine rooms
6.2.3.1
6.2.3.2 Access doors shall have dimensions of at least 0,60 m x 0,60 m
6.2.3.3
6.3 Construction and equipment of machine rooms
6.3.1
6.3.2 Dimensions
6.3.2.1
6.3.2.2
6.3.2.3
6.3.3 Socket outlet
6.3.4 Handling of equipment
7 Landing doors
7.1 General provisions
7.2 Strength of doors and their frames
7.2.1
7.2.2 Behaviour under fire conditions
7.2.3 Mechanical strength
7.2.3.1
7.2.3.2
7.3 Height and width of entrances
7.4 Sills, guides, door suspension
7.4.1 Sills
7.4.2 Guides
7.4.2.1
7.4.2.2
7.4.2.3
7.4.3 Suspension of vertically sliding doors
7.4.3.1
7.4.3.2
7.4.3.3
7.4.3.4
7.4.3.5
7.5 Protection in relation to door operation
7.5.1 General
7.5.2 Power operated doors
7.5.2.1 Sliding doors
7.5.2.1.1
7.5.2.1.2
7.5.2.1.3
7.5.2.2 Other types of doors
7.6 Local lighting and ‘car here’ signal lights
7.6.1 Local lighting
7.6.2 ‘Car here’ indication
7.7 Locking and closed landing door check
7.7.1 Protection against the risk of falling
7.7.2 Protection against shearing
7.7.2.1
7.7.2.2
7.7.3 Locking and emergency unlocking
7.7.3.1 Locking
7.7.3.1.1 For service lifts with
7.7.3.1.2
7.7.3.1.3
7.7.3.1.4
7.7.3.1.5
7.7.3.1.6
7.7.3.1.7
7.7.3.2 Emergency unlocking
7.7.4 Electrical device for proving the landing door closed
7.7.4.1
7.7.4.2
7.7.4.3
7.7.5 Sliding doors with multiple, mechanically linked panels
7.7.5.1
7.7.5.2
8 Car, counterweight and balancing weight
8.1 Height of car
8.2 Available car area and rated load
8.3 Walls, floor and roof of the car
8.3.1
8.3.2
8.3.2.1
8.3.2.2
8.3.2.3
8.3.3
8.4 Apron and automatic bridging sills
8.4.1 Apron
8.4.1.1
8.4.1.2
8.4.2 Automatic bridging sills
8.5 Car entrance
8.6 Car doors
8.6.1
8.6.2
8.6.3 Sills, guides, door suspension
8.7 Protection during operation of doors
8.7.1 Power operated sliding doors
8.7.1.1
8.7.1.2
8.8 Counterweight and balancing weight
8.8.1
8.8.2
9 Suspension, precautions against free fall, descent with excessive speed and creeping of the car
9.1 Suspension
9.1.1
9.1.2 The ropes shall correspond to the following conditions
9.1.3
9.1.4
9.2 Sheave, pulley, drum and rope diameter ratios, rope/chain terminations
9.2.1
9.2.2
9.2.2.1
9.2.2.2
9.2.2.3
9.2.2.4
9.3 Rope traction
9.3.1
9.3.2
9.4 Winding up of ropes for positive drive service lifts
9.4.1
9.4.2
9.4.3
9.4.4
9.5 Distribution of load between the ropes or the chains
9.5.1
9.5.1.1
9.5.1.2
9.5.2
9.5.3
9.6 Protection for traction sheaves, pulleys and sprockets
9.6.1
9.6.2
9.7 Precautions against free fall, descent with excessive speed, creeping of the car and against free fall of the counterweight or balancing weight
9.7.1
9.7.2
9.7.3
9.7.4
9.7.5
9.8 Safety gear
9.8.1 General provisions
9.8.1.1
9.8.1.2
9.8.2 Methods of tripping
9.8.2.1
9.8.2.2
9.8.3 Release
9.8.3.1
9.8.3.2
9.8.4 Constructional conditions
9.8.4.1
9.8.4.2
9.8.5 Electrical checking
9.9 Tripping means for safety gear
9.9.1 General provisions
9.9.2 Tripping by overspeed governor
9.9.2.1
9.9.2.2
9.9.2.3
9.9.2.4 Driving of the overspeed governor
9.9.2.4.1
9.9.2.4.2
9.9.2.4.3
9.9.2.4.4
9.9.2.5 Response time
9.9.2.6 Accessibility
9.9.2.6.1
9.9.2.6.2
9.9.2.6.3
9.9.2.7 Possibility of tripping the overspeed governor
9.9.2.8
9.9.2.9 Electrical checking
9.9.3 Tripping by safety rope
9.9.3.1
9.9.3.2
9.9.3.3
9.9.3.4
9.9.3.5
9.9.4 Overspeed governor rope, safety rope
9.9.4.1
9.9.4.2
9.9.4.3
9.9.4.4
9.9.5 Tripping by the breakage of the suspension means
9.9.5.1
9.9.5.2
10 Guide rails, buffers and final limit switches
10.1 General provisions concerning guide rails
10.1.1
10.1.2
10.2 Guiding of the car, counterweight or balancing weight
10.2.1
10.2.2
10.2.3
10.3 Buffers and fixed stops for car and counterweight
10.3.1
10.3.2
10.3.3
10.3.4
10.4 Car and counterweight buffers
10.4.1
10.4.2
10.5 Final limit switches
10.5.1 Final limit switches for electric service lifts
10.5.1.1
10.5.1.2 Actuation of the final limit switches
10.5.1.2.1
10.5.1.2.2
10.5.1.3 Method of operation of final limit switches
10.5.1.3.1 The final limit switches shall open the circuits feeding the motor and brake
10.5.1.3.2
10.5.2 Final limit switch for hydraulic service lifts
10.5.2.1
10.5.2.2 Actuation of the final limit switch
10.5.2.2.1
10.5.2.2.2
10.5.2.2.3
10.5.2.3 Method of operation of the final limit switch
11 Clearances between the car and wall facing the car entrance
11.1 General provision
11.2 Clearance between car and wall facing the car entrance
12 Lift machine
12.1 General provision
12.2 Service lift machines for electric service lifts
12.2.1 Drive of the car and the counterweight or balancing weight
12.2.1.1
12.2.1.2
12.2.2 Use of overhung pulleys or sprockets
12.2.3 Braking system
12.2.3.1 General provisions
12.2.3.1.1
12.2.3.1.2
12.2.3.2 Electro-mechanical brake
12.2.3.2.1
12.2.3.2.2
12.2.3.2.3
12.2.3.2.3.1
12.2.3.2.3.2
12.2.3.2.3.3
12.2.3.2.4
12.2.3.2.5
12.2.3.2.6
12.2.3.2.7
12.2.4 Emergency operation
12.2.4.1
12.2.4.1.1
12.2.4.1.2
12.2.5 Speed
12.2.6 Stopping the machine and checking its stopped condition
12.2.7 Safety devices against slack rope or slack chain
12.2.8 Motor run time limiter
12.2.9 Protection of machinery
12.3 Machine, jack and other hydraulic equipment for hydraulic service lifts
12.3.1 General provisions
12.3.2 Jack
12.3.2.1 Calculations of cylinder and ram
12.3.2.1.1 Pressure calculations
12.3.2.1.1.1
12.3.2.1.1.2
12.3.2.1.1.3
12.3.2.1.1.4
12.3.2.1.2 Buckling calculations
12.3.2.1.2.1
12.3.2.1.2.2
12.3.2.1.3 Tensile stress calculations
12.3.2.2 Connection car/ram (cylinder)
12.3.2.2.1
12.3.2.2.2
12.3.2.2.3
12.3.2.2.4
12.3.2.2.5
Limitation of the ram stroke
12.3.2.3.1
12.3.2.3.2
12.3.2.3.3 Cushioned stop
12.3.2.3.3.1 This stop shall either
12.3.2.3.3.2
12.3.2.3.4
12.3.2.4 Means of protection
12.3.2.4.1
12.3.2.4.2
12.3.2.4.3
12.3.2.5 Telescopic jacks
12.3.2.5.1
12.3.2.5.2
12.3.2.5.3
12.3.2.5.4
12.3.2.5.5
12.3.3 Piping
12.3.3.1 General
12.3.3.1.1
12.3.3.1.2
12.3.3.2 Rigid pipes
12.3.3.2.1
12.3.3.2.2
12.3.3.3 Flexible hoses
12.3.3.3.1
12.3.3.3.2
12.3.3.3.3
12.3.3.3.4
12.3.4 Stopping the machine and checking its stopped condition
12.3.4.1 Upwards motion
12.3.4.2 Downwards motion
12.3.4.3
12.3.5 Hydraulic control and safety devices
12.3.5.1 Shut-off valve
12.3.5.1.1
12.3.5.1.2
12.3.5.2 Non-return valve
12.3.5.2.1
12.3.5.2.2
12.3.5.2.3
12.3.5.3 Pressure relief valve
12.3.5.3.1
12.3.5.3.2
12.3.5.3.3
12.3.5.4 Direction valves
12.3.5.4.1 Down direction valves
12.3.5.4.1 Up direction valves
12.3.5.5 Rupture valve
12.3.5.5.1
12.3.5.5.2
12.3.5.6 Restrictor, also one-way restrictor
12.3.5.6.1
12.3.5.6.2
12.3.5.6.3
12.3.5.6.4
12.3.5.6.5
12.3.5.7 Filters
12.3.6 Checking the pressure
12.3.6.1
12.3.6.2
12.3.6.3
12.3.7 Tank
12.3.8 Speed
12.3.9 Emergency operation
Moving the car downwards
12.3.9.1.1
12.3.9.1.2
12.3.9.1.3
12.3.9.1.4
12.3.9.1.5
12.3.9.2 Checking of the car position
12.3.10 Protection of the pulley(s) on the jack
12.3.11 Protection of machinery
12.3.12 Motor run time limiter
12.3.12.1
12.3.12.2
12.3.12.3
12.3.13
12.3.14 Protection against overheating of the hydraulic fluid
13 Electric installations and appliances
13.1 General provisions
13.1.1 Limits of application
13.1.1.1
13.1.1.2
13.1.2
13.1.3 Insulation resistance of the electrical installation (CENELEC HD 384.6.61 S1)
13.1.4
13.1.5
13.2 Contactors, relay-contactors, components of safety circuits
13.2.1 Contactors and relay-contactors
13.2.1.1
13.2.1.2
13.2.1.3
13.2.2 Components of safety circuits
13.2.2.1
13.2.2.2
13.2.2.3
13.3 Protection of motors
13.3.1
13.3.2
13.3.3
13.4 Main switches
13.4.1
13.4.2
13.4.3
13.5 Electric wiring
13.5.1
13.5.1.1
13.5.1.2
13.5.1.3
13.5.1.4
13.5.2 Cross-sectional area of conductors
13.5.3 Method of installation
13.5.3.1
13.5.3.2
13.5.3.3
13.5.3.4
13.5.3.5
13.5.3.6
13.5.4 Connectors
13.6 Lighting and socket outlets
13.6.1
13.6.2
14 Protection against electric faults; controls; priorities
14.1 Failure analysis and electric safety devices
14.1.1 Failure analysis
14.1.1.1 Faults envisaged
14.1.1.2
14.1.1.3
14.1.2 Electric safety devices
14.1.2.1 General provisions
14.1.2.1.1
14.1.2.1.2 (Kept free)
14.1.2.1.3
14.1.2.1.4
14.1.2.1.5
14.1.2.1.6
14.1.2.1.7
14.1.2.1.8
14.1.2.2 Safety contacts
14.1.2.2.1
14.1.2.2.2
14.1.2.2.3
14.1.2.2.4
14.1.2.2.5
14.1.2.3 Safety circuits
14.1.2.3.1
14.1.2.3.2
14.1.2.3.2.1
14.1.2.3.2.2
14.1.2.3.2.3
14.1.2.3.2.4
14.1.2.3.2.5
14.1.2.4 Operation of electric safety devices
14.1.2.5 Actuation of electric safety devices
14.2 Controls
14.2.1 Control of service lift operations
14.2.1.1 Control of normal operation
14.2.1.2 Control of levelling, re-levelling and anti-creeping with doors open
14.2.1.3 Electrical anti-creep system for hydraulic service lifts
14.2.2 Stopping devices
14.2.2.1
14.2.2.2
14.2.3 Priority control
15 Notices, markings and operating instructions
15.1 General provisions
15.2 Rated load and vendor’s name
15.2.1 Rated load on or near each landing
15.2.2 Vendor’s name
15.2.3 Other information
15.2.3.1
15.2.3.2
15.2.4
15.2.5
15.3 Car roof
15.4 Machine rooms
15.4.1
15.4.2
15.4.3
15.4.3.1
15.4.3.2
15.4.4
15.4.5
15.5 Well
15.5.1
15.5.2
15.5.3
15.6 Overspeed governor
15.7 Pit
15.7.1
15.7.2
15.8 Electrical identification
15.9 Unlocking key for landing doors
15.10 Locking devices
15.11 Groups of lifts
15.12 Tank
16 Examinations - Tests - Register - Maintenance
16.1 Examinations and tests
16.1.1
16.1.2
16.2 Register
16.3 Vendor information
16.3.1 Access and normal use
16.3.1.1 Access
16.3.1.2 Normal use
16.3.2 Maintenance
16.3.3 Examination and tests
16.3.3.1 Periodical examinations
16.3.3.2 Examinations and tests after important modifications or accidents
Annex A
Annex B
Annex C
C.1 Introduction
C.2 General
C.3 Technical details and plans
C.4 Electric schematic diagrams and hydraulic circuit diagrams
Annex D
D.1 Examinations
D.2 Tests and verifications
Annex E
E.1 Periodical examinations and tests (normative)
E.2 Examinations and tests after important modifications or after accidents (informative)
Annex F
Annex G
Annex H
H.1 Calculation against over pressure
H.1.1 Calculation of wall thickness of rams, cylinders, rigid pipes and fittings
H.1.2 Calculation of the base thickness of cylinders (examples)
H.1.2.1 Flat bases with relieving groove
H.1.2.2 Cambered based
H.1.2.3 Flat bases with welded flange
H.2 Calculations of the jacks against buckling
H.2.1 Single jacks
H.2.2 Telescopic jacks without external guidance, calculation of ram
H.2.3 Telescopic jacks with external guidance, calculation of ram
Symbols:
Annex J
J.1 Means of access to machine room entrance of the service lift
J.2 Maintenance work carried out from a step of a ladder
Annex ZA
Annex ZB
Bibliography
Cited references in this standard
HD 384.6.61 S1
Electrical installations of buildings - Part 6: Verification – Chapter 61: Initial verification.
HD 384.5.54 S1
Electrical installations of buildings - Part 5: Selection and erection of electrical equipment - Chapter 54: Earthing arrangements and protective conductors.
[Superseded]
Fluid power systems and components — Graphic symbols and circuit diagrams — Part 1: Graphic symbols
HD 384.4.41 S2:1996
Electrical installations of buildings - Part 4: Protection for safety – Chapter 41: Protection against electric shock.
HD 360 S2
Circular rubber insulated lift cables for normal use.
Content history
[Superseded]
[Superseded]
[Superseded]
EN 81-3:2000+A1:2008
DR AS 1735.4:2020
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