Reference number  
DRS 365 : 2017 
© RBS yyyy 
© RSB 2017  
 1 RWANDA 
STANDARD                 
DRS  365 
            2017  
 
First edition  
2017 -00-00 
 
Installation of electric lift — Safety requirements  
 
 2 DRS 365 : 2017 
©RSB 201 7 All rights  reserved                  ii 
 
 In order to match with technological development and to keep continuous p rogress in industries, 3 
technical speci fications are subject to periodic review. Users shall ascertain that they are in possession 4 
of the latest edition  5 
 
 
 
 
 
 
 
 
 
 
© RSB 2017 6 
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized 7 
in any form o r by any means, electronic or mechanical, including photocopying and microfilm, without 8 
prior written permission from R SB. 9 
Requests for permission to reproduce this document should be addressed to  10 
Rwanda Standards  Board  11 
P.O Box 7099 Kigali -Rwanda  12 
Tel. +250  252 586103/ 582945  13 
E-mail: info@rsb.gov.rw  14 
Website: www.rsb.gov.rw  15 DRS 3 65: 2017 
iii                 ©RSB 2017 All rights reserved  
 
 Contents  Page  16 
 17 
1 Scope  ................................ ................................ ................................ ................................ ......................  1 18 
2 Normative references  ................................ ................................ ................................ ............................  1 19 
3 Terms and definitions  ................................ ................................ ................................ ...........................  1 20 
4 Requirements  ................................ ................................ ................................ ................................ .........  1 21 
4.1 Lift well  ................................ ................................ ................................ ................................ ...................  1 22 
4.2 Machinery and pulley spaces  ................................ ................................ ................................ ...............  4 23 
4.3 Landing doors  ................................ ................................ ................................ ................................ ........  7 24 
4.4 Suspension, compensation and overspeed protection  ................................ ................................ .. 11 25 
4.5 Guide rails, buffers and final limit switches  ................................ ................................ .....................  14 26 
4.6 Lift machine  ................................ ................................ ................................ ................................ .........  14 27 
4.7 Electric installations and appliances  ................................ ................................ ................................  15 28 
4.8 Protection against electric faults; controls; priorities  ................................ ................................ ..... 17 29 
5 Notices, markings and operating instructions  ................................ ................................ .................  18 30 
6 Examinations - Tests - Register - Maintenance  ................................ ................................ ................  18 31 
6.1 Examinations and tests  ................................ ................................ ................................ ......................  18 32 
6.2 Register  ................................ ................................ ................................ ................................ ................  18 33 
6.3 Installer informa tion ................................ ................................ ................................ ............................  19 34 
 35 DRS 365 : 2017 
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 Foreword  36 
Rwanda Standard s are prepared  by Technical Committees and approved by R wanda Standards Board (RSB) 37 
Board  of Directors in  accordance with the procedures of RSB, in compliance with Annex 3 of the WTO/TBT 38 
agreement on the preparation, adoption and application of standards.  39 
The main task of technical committees is to prepare national standards.  Final Draft Rwanda S tandards 40 
adopted by Technical committ ees are ratified by me mbers of RSB Board of Director s for publ ication and 41 
gazettment as Rwanda Standards.  42 
In other circumstances, particularly when there is an urgent need for such documents, Rwanda Standards 43 
Board may decide to publish technical specifications  to respond to either market or regulatory  needs .  A 44 
technical specification represents an agreement of majority of  the members of a Technical Committee  and the 45 
document is subjected to review for improvement . 46 
DRS 365: 2017  was prepared by Joint Technical Committee RSB/TC 010& RSB/TC 23 , Electrical Engineering 47 
and Electronics  & Mechanical Engineering and Metallurgy . 48 
In the preparation of this Technical Specification , reference was made to the following standard:  49 
EN 81 -1: 1998 , Electric rules for construction and installation of lifts  — Electric lifts  50 
The assistan ce de rived from the above source is hereby acknowledged with thanks.  51 
Committee membership  52 
The following organizations were represented on the Joint Technical Committee on Electrical Engineering and 53 
Electronics and Mechanical  Engineering and Metallurgy  (RSB/TC 010&RSB/TC 023 ) in the preparation of this 54 
standard.  55 
Association des Consomateurs au Rwanda (ADECOR)  56 
Rwanda  Standards Board  (RSB) – Secretariat  57 
58 DRS 3 65: 2017 
v                 ©RSB 2017 All rights reserved  
 
 59 DRS 365 : 2017 
1                 ©RSB 2017 All rights reserved  
 
 Installation of electric lift — Safety requirements  60 
1 Scope  61 
This Draft Rwanda S tandard specifies the safety  requirements for the installation of permanently new electric 62 
lifts with a car designed for the transportation of persons or persons and goods, suspended by ropes or chains 63 
and moving between guide rails inclined not more than 15° to the vertical.  64 
2 Normati ve references  65 
The following referenced documents are indispensable for the application of this document. For dated 66 
references, only the edition cited applies. For undated references, the latest edition of the referenced 67 
document (including any amendments) applies . 68 
RS ISO 4190 -1 Lift (Elevator) installation — Part 1:  Class I, II, III and VI lifts  69 
RS ISO 4190 -2 Lift (US: Elevator) installation — Part 2:  Class IV lifts  70 
RS ISO 4190 -3 Passenger lift installations - Part 3: Service lifts class V  71 
RS ISO 4190 -5 Lift (Elevator) installation — Part 5:  Control devices, signals and additional Fittings  72 
RS ISO 4190 -6 Lifts and service lifts (USA: elevators and dumbwaiters) - Part 6: Passenger lifts to 73 
be installed in residential buildings - Planning and selection  74 
RS ISO 1 3857  Safety of machinery -- Safety distances to prevent hazard zones being reached by 75 
upper and lower limbs  76 
RS IEC  60947 -4-1, Low -voltage switchgear and controlgear - Part 4: Contactors and motor -starters 77 
- Section 1: Electromechanical contactors and motor -starters.  78 
RS IEC 60947 -5-1, Low -voltage switchgear and controlgear - Part 5: Control circuit devices and 79 
switching elements - Section 1: Electromechanical control circuit devices.  80 
IEC 61000 -4Electromagnetic compatibility (EMC) - Part 4: Testing and measur ement techniques   81 
3 Terms and definitions  82 
For the purposes of this standard , the terms and definitions given in RS ISO 4190 series apply . 83 
4 Requirements  84 
4.1 Lift well  85 
The counterweight or the balancing weight of a lift shall be in the same well as the car.  86 
4.1.1  Well e nclosure  87 
4.1.1.1 A lift shall be sepa rated from the surroundings by walls, floor and ceiling, or sufficient  space.  88 
4.1.1.2  In sections of the building where the well is required to contribute against the spread of fire, the  89 
well shall be totally enclosed b y imperforate walls, floor and ceiling.  90  
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 4.1.1.3  The only permissible  openings are: 91 
a) openings for landing doors ;  92 
b) openings for inspection and emergency doors to the well and inspection traps ;  93 
c) vent openings for escape of gases and smoke in the event of fire ; 94 
d) ventilation openings ;  95 
e) necessary openings for the functioning of the lift between the well and the machine or pulley  rooms ;  96 
f) open ings in partition between lift s. 97 
4.1.1.4  Where the well is not required to contribute against the spread of fire , the well do es not need to 98 
be totally  enclosed, provided:  99 
a) the height of the enclosure at places normally accessible to persons shall be sufficient to  prevent such 100 
persons :  101 
1) being endangered by moving parts of the lift, and  102 
2) interfering with the safe operation of the li ft by reaching lift equipment within the well either  directly or 103 
with hand -held objects.  104 
b) the enclosure shall be imperforate ;  105 
c) provisions shall be taken to prevent the interference with the operation of the lift by other  equipment;  106 
d) special precautions shall  be taken for lifts exposed to weather . 107 
4.1.2  Inspection and emergency doors - Inspection traps  108 
4.1.2.1  Inspection and emergency doors, and inspection traps to the well, shall not be used  except on 109 
grounds of safety to users or the requirements of maintenance.  110 
4.1.2.2 The size of the doors shall comply with the requirements given in relevant part of RS ISO 4190  111 
4.1.2. 3 Inspection and emergency doors and inspection traps shall not open towards the  interior of the 112 
well. 113 
4.1.2.4 The doors and traps shall be provided  with a key -operated lock, capable of being  reclosed and 114 
relocked without a key.  115 
4.1.2.5 Inspection and emergency doors shall be capable of being opened from inside the well without a  116 
key even when locked.  117 
4.1.2.6 Operation of the lift shall depend on main taining these doors and traps in  the closed position.  118 
4.1.2.7 Inspection and emergency doors and inspection traps shall be imperforate, satisfy the  same 119 
requirements for mechanical strength  according to relevant part of ISO 4190  as the landing doors, and comply 120 
with the regulations  relevant to the fire protection for the building concerned.  121 DRS 365 : 2017 
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 4.1.3  Ventilation of the well  122 
The well shall be ventilated. It shall not be used to provide ventilation of rooms other than  those belonging to 123 
the lift.  124 
4.1.4  Walls, floor and ceil ing of the well  125 
4.1.4.1  The structure of the well shall conform to National Building Regulations and be able to support at  126 
least the loads which may be applied by the machine, by the guide rails at the moment of safety  gear 127 
operation, in the case of eccent ric load in the car, by the action of the buffers, by those which  may be applied 128 
by the anti -rebound device, by  loading and unloading the car.  129 
4.1.4.2  The strength of the walls, floor and ceiling of the well shall be in compliance with National Building 130 
Regulations and relevant standards.   131 
4.1.5  Construction of the walls of lift wells and landing doors facing a car entrance  132 
4.1.5.1   The requirements relating to landing doors and walls, or parts of walls, facing a car  entrance 133 
shall apply over the full height of t he well.  134 
4.1.5.2  The assembly comprising the landing doors and any wall or part of a wall facing the car  entrance 135 
shall form an imperforate surface over the full entrance width of the car, excluding the  operational clearances 136 
of doors.  137 
4.1.6  Protection of any sp aces located below the car, the counterweight or the balancing weight  138 
If accessible spaces do exist below the car, the counterweight or the balancing weight, the base of the pit shall 139 
be designed for an imposed load of at least 5 000 N/m2, and either there  shall be installed below the 140 
counterweight buffer or under the travelling area of the balancing  weight, a solid pier extending down to solid 141 
ground, or the counterweight or the balancing weight shall be equipped with safety gear.  142 
4.1.7  Protection in the well  143 
4.1.7.1  The travelling area of the counterweight or the balancing weight shall be guarded by means  of a 144 
rigid screen extending from a position of not more than 0,30 m above the lift pit floor to a  position at least 2,50 145 
m. 146 
4.1.7.2  The width shall be at least  equal to that of the counterweight plus 0,10 m on each side.  147 
4.1.7.3  Where the well contains several lifts there shall be a partition between the moving parts of  148 
different lifts.  149 
4.1.7.4  The partition shall extend at least from the lowest point of travel of the car, the  counterweight or 150 
the balancing weight to a height of 2,  50 m above the floor of the lowest landing.  151 
4.1.7.5  The width shall be as to prevent access from one pit to another . 152  
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 4.1.7.6  The partition shall extend through the full height of the w ell if the horizontal distance  between the 153 
edge of the car roof and a moving part (car, counterweight or balancing weight) of an  adjacent lift is less than 154 
0,50 m.  155 
4.1.7.7  The width of the partition shall be at least equal to that of the moving part, or pa rt of this, which is  156 
to be guarded, plus 0,10 m on each side.  157 
4.1.8  Exclusive use of the lift well  158 
The well shall be exclusively used for the lift. It shall not contain cables or devices  other than  for the lift. The 159 
well may, however, contain heating equipment f or the lift well excluding steam  heating and high pressure 160 
water heating. However, any control and adjustment devices of the  heating apparatus shall be located outside 161 
the well.  162 
4.1.9  Lighting of the well  163 
4.1.9.1 The well shall be provided with permanently insta lled electric lighting, giving an intensity of  164 
illumination of at least 50 lux, 1 m above the car roof and the pit floor, even when all doors are  closed.  165 
4.1.9.2 This lighting shall comprise one lamp at most 0,50 m from the highest and lowest points in the  166 
well with intermediate lamp(s)  167 
4.2 Machine ry and pulley spaces  168 
Machinery and pulleys shall be located in machinery and pulley spaces. These spaces and the associated 169 
working areas shall be accessible. Provisions shall be made to allow access to the spaces onl y to authorized 170 
persons (maintenance, inspection and rescue). The spaces and the associated working areas shall be 171 
suitably protected against environmental influences to be taken into consideration and provisions made for 172 
suitable areas for maintenance/ins pection work and emergency operation.  173 
4.2.1  Access  174 
4.2.1.1 Access to the interior of the machine and pulley rooms shall:  175 
a) be capable of being properly lit by a permanent electric light fixture(s) ;  176 
b) be easy to use in complete safety in all circumstances without ne cessitating entry into private  premises.  177 
4.2.1.2 A safe access for persons to machine and pulley rooms shall be provided.  178 
4.2.2  Machinery in machine room  179 
4.2.2.1 When lift machines and their associated equipment are located in a machine room, it shall  180 
comprise solid walls, ceiling, floor and door and / or trap.  181 
4.2.2.2 Machine rooms shall not be used for purposes other than lifts. They shall not contain ducts, 182 
cables or devices  other than for the lift.  These rooms may, however, contain:  183 
a) machines for service lift s or escalators;  184 DRS 365 : 2017 
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 b) equipment for air -conditioning or heating of these rooms, excluding steam heating and high pressure  185 
water heating;  186 
c) fire detectors or extinguishers, with a high operating temperature, appropriate for the electrical equipment,  187 
stable over a period of time, and suitably protected against accidental impact.  188 
4.2.2.3 The traction sheave may be installed in the well, provided that:  189 
a) examinations and the tests and the maintenance operations may be carried out from the machine room;  190 
b) openings between the machine room and the well are as small as possible.  191 
4.2.2.4  The dimensions of machine rooms  working areas inside the well , shall comply with the 192 
requirements of the relevant part of RS ISO 4190  193 
4.2.2.5  Machine rooms shall be so constructed to withstand  the loads and forces to which they  are intended 194 
to be subjected.  They shall be of non -slip material and in  durable material not favouring the creation of dust.  195 
4.2.2.6  The dimensions of doors and trap doors shall comply with the requirements of the releva nt part of 196 
RS ISO 4190  197 
4.2.2.7  Trap doors shall not open downwards, unless they are linked to retractable ladders. Hinges, if 198 
any, shall be of a type which cannot be unhooked.  199 
4.2.2.8  When a trap door is in the open position, precautions shall be taken to prevent the fall of persons  200 
(e.g. a guard rail).  201 
4.2.2.9  The doors or trap doors shall be fitted with locks having keys, which can be opened  without a key 202 
from inside the room.  203 
4.2.2.10  Trap doors used only for access of material may be locked from the ins ide only.  204 
4.2.2.11  The machine rooms and machinery spaces inside the well shall be ventilated. Stale air from other 205 
parts of the building shall not be  extracted directly into the machine room  and the electric equipment of the 206 
machinery shall be protected f rom dust, harmful fumes and humidity.  207 
4.2.2. 12 The machine room shall be provided with permanently installed electric lighting on the basis of at  208 
least 200 lux at floor level.  209 
4.2.2. 13 A switch placed inside close to the access point(s), at an appropriate  height, shall control lighting  210 
of the room.  211 
4.2.2.14  One or more metal supports or hooks with the indication of the safe working load  shall be  provided in 212 
the machine room ceiling or on the beams, conveniently positioned to  permit the hoisting of heavy eq uipment.  213 
4.2.2. 15 A switch accessible only to authorized  persons and placed close to the access point(s) to working 214 
area(s), at an appropriate height, shall control the lighting of the areas and spaces.  215 
4.2.2. 16 At least one socket outlet shall be provided  at an appropriate place for machine room and each 216 
working area.  217  
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 4.2.3   Machinery  outside of the well  218 
4.2.3.1 Machinery spaces outside of the well and not located in a separate machine room shall be so 219 
constructed to  withstand the loads and forces to which they are intended to be subjected.  220 
4.2.3.2  The machinery of a lift shall be located inside a cabinet which shall not be used for purposes 221 
other  than the lift. It shall not contain ducts, cables or devices other than for the lift.  222 
4.2.3.3  The openings when acc essible to non -authorised persons shall comply with the following 223 
requirements:  224 
a) protection according to RS ISO 13857  against contact with danger zones, and  225 
b) degree of protection of at least IP 2XD against contact with electrical equipment.  226 
4.2.3.4 The door( s) shall meet the following:  227 
a) have sufficient dimensions to carry out the required work through the door;  228 
b) not open towards the inside of the cabinet;  229 
c) be provided with a key -operated lock, capable of being reclosed and relocked without a key.  230 
4.2.3.5 The mac hinery cabinet shall be ventilated. It shall be such that the machinery is protected from 231 
dust, harmful fumes and humidity.  232 
4.2.3.6 The inside of the machinery cabinet shall be provided with permanently installed electric lighting 233 
with an  intensity of at l east 200 lux at floor level.  234 
4.2.3.7 A switch placed inside close to the door(s), at an appropriate height, shall cont rol lighting of the 235 
cabinet. At least one socket outlet shall be provided.  236 
4.2.4  Construction  and equipment of pulley spaces  237 
4.2.4.1  Pulleys ou tside of the well shall be located in a pulley room.  238 
4.2.4.2  The pulley rooms shall be so constructed to withstand the loads and forces to which they will 239 
normally be subjected. They shall be in durable material, not favouring the creation of dust.  240 
4.2.4.3  The floors of the pulley rooms shall be of non -slip material.  241 
4.2.4.4   Pulley room dimensions shall be sufficient to provide easy and safe access for maintenance  242 
personnel to all the equipment.  243 
4.2.4.5  A stopping device  shall be installed in the pulley ro om, close to the  point(s) of access.  244 
4.2.4.6  If the pulley rooms also contain electrical equipment, the ambient temperature shall be similar to 245 
that of the  machine room.  246 DRS 365 : 2017 
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 4.2.4.7  The pulley room shall be provided with permanently installed electric lighting  with an int ensity of 247 
at least 100 lux at the pulley(s).  248 
4.2.4.8  A switch, placed inside, close to the access point, at an appropriate height, sh all control the 249 
lighting of the room.  250 
4.2.4.9  At least one socket outlet shall be provided.  251 
4.2.4.10  Diverter pulleys may be installed in the headroom of the well provided that they are located 252 
outside the  projection of the car roof and that examinations and tests and maintenance operations can be 253 
carried out in  complete safety from the  car roof, from inside the c ar, from a platform or from outside of the  well. 254 
4.2.4.11  Diverter pulley, with single or double wrap, may be installed above the car roof for diverting  255 
towards the counterweight, provided that its shaft can be reached in complete safety from the car roof or from  256 
a platform.  257 
4.3 Landing doors  258 
4.3.1  Strength of doors and their frames  259 
4.3.1.1  Doors and their frames shall be constructed in such a way that they will not become  deformed in 260 
the course of time  and shall be  made of metal  or tempered glass . 261 
4.3.1.2  Landing do ors shall comply with the regulations relevant to the fire protection for the building  262 
concerned.  263 
4.3.1. 3 Door panels made of glass shall be fixed in such a way that forces demanded by this  standard 264 
which may be applied are transferred without damaging the  fixing of the glass.  265 
4.3.1. 4 The fixing of the glass in doors shall ensure that the glass cannot slip out of the fixings,  even 266 
when sinking.  267 
4.3.2  Height and width of entrances  268 
The height and width dimensions shall comply with the requirements of relevant part of RS ISO 4190  269 
4.3.3  Sills, guides, door suspension  270 
4.3.3.1  Every landing entrance shall incorporate a sill of sufficient strength to withstand the passage of  271 
loads being introduced into the car.  272 
4.3.3.2  Landing doors shall be designed to prevent, during normal operation, derailment,  mechanical 273 
jamming, or displacement at the extremities of their travel.  274 
4.3.3.3  Where the guides may become ineffective due to wear, corrosion or fire, emergency guidance  275 
shall be provided to maintain the landing doors in their posit ion. 276  
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 4.3.3.4  Horizontally sliding landing doors shall be guided top and bottom.  277 
4.3.3.5  Vertically sliding landing doors shall be guided at both sides.  278 
4.3.3.6  Panels of vertically sliding landing doors shall be fixed to two independent suspension  elements . 279 
4.3.3.7  Suspension ropes, chains, belts shall be designed with a safety factor of at least 8  280 
4.3.3.8  The pitch diameter of suspension rope pulleys shall be at least 25 times the rope  diameter.  281 
4.3.3.9  Suspension ropes and chains shall be guarded against leaving the pulley grooves or  sprockets.  282 
4.3.4  Protection in relation to door operation  283 
4.3.4.1  The doors and their surrounds shall be designed in such a way as to minimize risk of damage or  284 
injury due to jamming of a part of the person, clothing or other object . 285 
4.3.4.2  To avoid the risk of shearing during operation, the exterior face of automatic power operated  286 
sliding doors shall not have recesses or projections exceeding 3 mm. Edges of these shall be  chamfered in 287 
the opening direction of movement.  288 
4.3.4.3  Power operated doors shall be designed to reduce to a minimum the harmful consequences of a  289 
person being struck by a door panel.   290 
4.3.4.1  Horizontal sliding a utomatic power operated doors  291 
4.3.4.1.1  The effort needed to prevent the door closing shall not exceed 150 N.  This measurement shall not 292 
be made in the first third of the travel of the door.  293 
4.3.4.1. 2 The kinetic energy of the landing door and the mechan ical elements which are rigidly connected 294 
to it, calculated or measured at the average closing speed shall not exceed 10 J.  295 
4.3.4.1.3  The average closing speed of a sliding door is calculated over its whole travel, less :  296 
a) 25 mm at each end of the travel in the case of centrally closing doors ;  297 
b) 50 mm at each end of the travel in the case of side closing doors.  298 
4.3.4 .1.4 A protective device shall automatically initiate re -openin g of the door in the event of a person 299 
being struck, or about to be struck, by the door in crossing the entrance during the closing  movement.  . 300 
4.3.4.1. 5 The effort needed to prevent a folding door from opening shall not exceed 150 N.  301 DRS 365 : 2017 
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 4.3.4.2  Horizontal sliding n on-automatic power operated doors   302 
When the closing of the door is carried out under the continuous control and supervision of the  user, by 303 
continuous pressure on a button or similar (hold -to-run control), the average closing  speed of the fastest panel 304 
shall be limited to 0, 3 m/s, when the kinetic energy exceeds 10 J.  305 
4.3.4.3  Vertically sliding doors  306 
This type of sliding door shall only be used for goods passenger lifts and p ower closing shall only be us ed if 307 
the following conditions are fulfilled at the same time:  308 
a) the closing is carried out under the continuous control and supervision of the users ;  309 
b) the average closing speed of the panels is limited to 0,3 m/s ;  310 
c) the car door is at least two -thirds closed  before the landing door begins to close.  311 
 312 
4.3.5  Local lighting  313 
The natural or artificial lighting of the landings in the vicinity of landing doors shall be at least  50 lux at floor 314 
level, such that a user can see ahead when he is opening the landing door to en ter the lift, even i f the car light 315 
has failed . 316 
4.3.6  Locking and closed landing door check  317 
4.3.6.1  It shall not be possible in normal operation to open a landing door (or any of the panels in the 318 
case  of a multi -panel door) unless the car has stopped, or is on the point of stopping, in the unlocking  zone of 319 
that door.  320 
4.3.6.2  It shall not be possible in normal operation to start the lift  nor keep it in motion if a landing door, or 321 
any of the panels in the case of a multi -panel door is  open .  322 
4.3.6.3  Each landing  door shall be provided with a locking device .This device shall be protected against 323 
deliberate misuse . 324 
4.3.6.1  Locking  325 
4.3.6.1.1  The effective locking of the landing door in the closed position shall precede the movement of the  326 
car. The locking  must be proved by an electric safety device  327 
4.3.6.1.2  The car shall not be able to start until the locking elements are engaged by at least  7 mm  328 
4.3.6.1.3  The element of the electric safety device proving the locked condition of the door  panel(s) shall be 329 
positively opera ted without any intermediate mechanism by the locking element.  It shall be foolproof but 330 
adjustable if necessary.  331  
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 4.3.6.1.4  For hinged doors, locking shall be effected as near as possible to the vertical closing  edge(s) of 332 
the doors, and maintained even in  the case of panels sagging.  333 
4.3.6.1.5  The locking elements and their fixings shall be resistant to shock, and be made or  reinforced with 334 
metal.  335 
4.3.6.1.6  The engagement of the locking elements shall be achieved in such a way that a force  of 300 N in 336 
the o pening direction of the door does not diminish the effectiveness of locking.  337 
4.3.6.1.7  The lock shall resist, without perman ent deformation during the test, a minimum force at the level 338 
of the lock and in the direction of opening of the door of: 339 
a) 1000 N in the case of sliding doors ;  340 
b) 3000 N on the locking pin, in the case of hinged doors.  341 
4.3.6.1.8  The locking action shall be effected and maintained by the action of gravity, permanent  magnets, 342 
or springs.  The springs shall act by compression, be guided and of such dimensions  that, at the moment of 343 
unlocking, the coils are not compressed solid.  344 
4.3.6.1.9  In the event of the permanent magnet (or spring) no longer fulfilling its function, gravity shall not  345 
cause unlocking.  346 
4.3.6.1.10  If the locking element is m aintained in position by the action of a permanent magnet, it shall not 347 
be possible to neutralize its effect by s imple means . 348 
4.3.6.1.11  The locking device shall be protected against the risk of an accumulation of dust,  which could 349 
hinder its proper functi oning.  350 
4.3.6.1.12  In the case where the lock contacts are in a box, the fixing screws for the cover shall  be of the 351 
captive type, so that they remain in the holes in the cover or box when opening the cover.  352 
4.3.6.2  Emergency unlocking  353 
4.3.6. 2.1 Each of the landing  doors shall be capable of being unlocked from the outside with the aid of a  354 
key, which will fit the unlocking triangle as defined in Figure 1 . 355 DRS 365 : 2017 
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 356 
Figure 1-Unlocking triangle  357 
4.3.6.2. 2 Keys of this type shall be given only to a resp onsible person. They shall be accompanied by a  358 
written instruction detailing the essential precautions to be taken in order to avoid accidents which  could result 359 
from an unlocking which was not followed by effective relocking.  360 
4.3.6.2. 3 After an emergency unlocking, the locking device shall not be able to remain in the unlocked  361 
position with the landing door closed.  362 
4.3.6.2. 4 In the case of landing doors driven by the car door, a device (either weight or springs) shall 363 
ensure  the automatic closing of the la nding door if this door becomes open, for whatever reason, when  the car 364 
is outside the unlocking zone.  365 
4.3.6.3  Closing of automatically operated doors  366 
In normal operation, automatically operated landing doors shall be closed after the necessary  period of time, 367 
which may be defined according to the traffic using the lift, in the absence of a  command for the movement of 368 
the car.  369 
4.4 Suspension, compensation and overspeed protection  370 
4.4.1  Suspension  371 
4.4.1.1  Cars, counterweights or balancing weights shall be suspended from steel  wire ropes, or steel  372 
chains with parallel links (Galle type) or roller chains.  373 
4.4.1.2  The ropes shall correspond to the following requirements:  374 
a) the nominal diameter of the ropes shall be at least 8 mm ;  375 
b) the tensile strength of the wires shall be :  376 
1) 1570 N /mm 2 or 1770 N/mm 2 for ropes of single tensile, or  377  
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 2) 1370 N/mm 2 for the outer wires and 1770 N/mm 2 for the inner wires of ropes of dual  tensile.  378 
c) the other characteristics  shall at least  correspond to those specified in the relevant standards.  379 
4.4.1.3  The mi nimum number of ropes or chains shall be two.  Ropes or chains shall be independent .  380 
4.4.2  Sheave, pulley, drum and rope diameter ratios, rope/chain terminations  381 
4.4.2.1 The ratio between the pitch diameter of sheaves, pulleys or drums and the nominal diameter  of 382 
the suspension ropes shall be at least 40, regardless of the number of strands.  383 
4.4.2.2  The safety factor of the suspension ropes shall be less than:  384 
a) 12 in the case of traction drive with three ropes or more ;  385 
b) 16 in the case of traction drive with two ro pes ;  386 
c) 12 in the case of drum drive.  387 
4.4.2.3  The junction between the rope and the rope termination  shall be able  to resist at least 80 % of the 388 
minimum breaking load of the rope.  389 
4.4.2.4  The ends of the ropes shall be fixed to the car, counterweight or bal ancing weight, or  suspension 390 
points of the dead parts of reeved ropes by means of metal or resin filled sockets, self  tightening wedge type 391 
sockets, heart shaped thimbles with at least three suitable rope grips, hand  spliced eyes, ferrule secured 392 
eyes, or any other system with equivalent safety.  393 
4.4.2.5  The fixing of the ropes on the drums shall be carried out using a system of blocking  with wedges, 394 
or using at least two clamps or any other system with equivalent safety.  395 
4.4.2.6  The safety factor of the sus pension chains shall be at least 10   396 
4.4.2.7  The ends of each chain shall be fixed to the car, counterweight or balancing weight, or  397 
suspension points of the dead parts of reeved chains by suitable terminations.  398 
4.4.2.8  The junction  between the chain and the chain termination shall be able to resist at least 80 % of 399 
the minimum  breaking load of the chain.  400 
4.4.3  Distribution of load between the ropes or the chains  401 
4.4.3.1  An automatic device shall be provided for equalizing the tension of suspension ropes or  chains, at 402 
least at one of their ends.  403 
4.4.3.2  For chains engaging with sprockets, the ends fixed to the car as well as the ends fixed  to the 404 
balancing weight shall be provided with such equalization devices.  405 
4.4.3.3  For chains in the case of multiple return s prockets on the same shaft, these sprockets  shall be 406 
able to rotate independently.  407 DRS 365 : 2017 
13                 ©RSB 2017 All rights reserved  
 
 4.4.3.4  If springs are used to equalize the tension they shall work in compression.  408 
4.4.3.5  The devices for adjusting the length of ropes or chains shall be made in such a w ay that  these 409 
devices cannot work themselves loose after adjustment.  410 
4.4.4  Protection for traction sheaves, pulleys and sprockets  411 
4.4.4.1  For traction sheaves, pulleys and sprockets, provisions shall be made in manner that  avoid:  412 
a) bodily injury ;  413 
b) the ropes/chains  leaving the pulleys/sprockets, if slack ;  414 
c) the introduction of objects between rop es/chains and pulleys/sprockets  415 
4.4.4.2   The devices used shall be constructed so that the rotating parts are visible, and do not  hinder 416 
examination and maintenance operation .  417 
4.4.4.3  The dismantling /overhauling  shall be necessary only in the following cases:  418 
a) replacement of a rope/chain ;  419 
b) replacement of a pulley/sprocket ;  420 
c) re-cutting of the grooves.  421 
4.4.5  Safety gear  422 
The car shall be provided with a safety gear capable of operating  in the downward  direction and capable of 423 
stopping a car carrying the rated load, at the tripping speed of the  overspeed governor, even if the suspension 424 
devices break, by gripping the guide rails, and of  holding the car there.  425 
4.4.6  Protection against unintende d car movement  426 
4.4.6.1  Lifts shall be provided with a means to stop unintended car movement away from the landing with 427 
the landing door not in the locked position and the car door not in the closed position, as a result of failure in 428 
any single component o f the lift machine or drive control system upon which the safe movement of the car 429 
depends, except failure of the suspension ropes or chains and the traction sheave or drum or sprockets of the 430 
machine.  431 
4.4.6.2  The means shall detect unintended movement of the car, shall cause the car to stop, and keep it 432 
stopped.  433 
4.4.6.3  The means shall be capable of performing as required without assistance from any lift component 434 
that, during normal operation, controls the speed or retardation, stops the car or keeps it s topped, unless there 435 
is built -in redundancy and correct operation is self -monitored.  436 
4.4.6.4  The means shall stop the car in a distance:  437 
a) not exceeding 1,20 m from the landing where the unintended car movement has been detected, and  438  
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 b) the vertical distance between the landing sill and the lowest part of the car apron shall not exceed  200 439 
mm, and  440 
c) the free distance from car sill to landing do or lintel, or from landing sill to car door lintel shall not be less  441 
than 1,00 m (see Figure 4).  442 
 443 
Figure 4 — Unintended car movement  444 
4.5 Guide rails, buffers and final limit switches  445 
4.5.1  The guide rails, their joints and attachments shall be sufficient to w ithstand the loads and  forces 446 
imposed on them in order to ensure a safe operation of the lift.  447 
4.5.2  Lifts shall be provided with buffers at the bottom limit of travel of the car and  counterweight.  448 
4.5.3  Final limit switches shall be provided  and shall be set to function as close as possible to the terminal 449 
floors, without risk  of accidental operation.  450 
4.5.4  Final limit switches  shall operate before the car (or counterweight if there is one) comes into contact 451 
with the  buffers. The action of the final limit  switches shall be maintained whilst the buffers are  compressed.  452 
4.5.5  Separate actuating devices shall be used for normal terminal stopping and final limit  switches.  453 
4.5.6  After the operation of the final limit switches, the return to service of the lift shall not  occur 454 
automatically.  455 
4.6 Lift machine  456 
4.6.1  The lift shall be provided with a braking system, which operates automatically:  457 
a) in the event of loss of the mains power supply;  458 
b) in the event of the loss of the supply to control circuits.  459 
4.6.2  The braking system shall have an electro -mechanical brake (friction type), but may, in addition, have 460 
other braking means (e.g. electric).  461 DRS 365 : 2017 
15                 ©RSB 2017 All rights reserved  
 
 4.6.3  The brake on its own shall be capable of stopping the machine when the car is travelling downward at 462 
rated speed and with t he rated load plus 25 %. In these conditions the retardation of the car shall not exceed 463 
that resulting from operation of the safety gear or stopping on the buffer.  464 
4.6.4  All the mechanical components of the brake which take part in the application of the braking action on 465 
the drum or disk shall be installed in two sets. If one of the components is not working a sufficient braking 466 
effort to slow down the car, travelling downwards at rated speed and with rated load shall continue to be 467 
exercised.  468 
4.6.5  The c omponent on which the brake operates shall be coupled to the traction sheave or drum or 469 
sprocket by direct and positive mechanical means.  470 
4.6.6  To hold off the brake, in normal operation, shall require a continuous flow of current.  471 
4.6.7  Braking shall beco me effective without supplementary delay after opening of the brake release  472 
circuit.  473 
4.6.8  The brake shoe or pad pressure shall be exerted by guided compression springs or weights.  474 
4.6.9  Band brakes shall not be used  and b rake linings shall be incombustibl e 475 
4.6.10  The speed of the lift car, half loaded, in downward motion, in mid -travel, excluding all acceleration and  476 
retardation periods, shall not exceed the rated speed by more than 5 %, when the supply is at its rated  477 
frequency, and the motor voltage is e qual to the  rated voltage of the equipment .  478 
4.7 Electric installations and appliances  479 
4.7.1  The lift shall be considered as a whole, in the same way as a machine with its built in electrical 480 
equipment.  481 
4.7.2  The electromagnetic compatibility shall comply with  the requirements of  relevant part of IEC 61000 -4  482 
4.7.3  In the machinery and pulley spaces protection of the electrical equipment against direct contact  shall 483 
be provided by means of casings providing a degree of protection of at least IP 2X.  484 
4.7.1  Contactors, relay -contactors, components of safety circuits  485 
4.7.1.1.  The main contactors  shall belong to the  following categories as defined in RS IEC 60947 -4-1: 486 
a) AC-3 for contactors for A.C. motors;  487 
b) DC-3 for contactors for D.C. power.  488 
4.7.1.2  If, because of the power they carry, relay -contactors are used to operate the main contactors, 489 
those  relay -contactors shall belong to the following categories as defined in  RS IEC 60947 -5-1: 490 
a) AC-15 for controlling A.C. electromagnets;  491 
b) DC-13 for controlling D.C. electromagnets.  492 
4.7.2  Protection of motors and other electrical equipment  493 
4.7.2.1  Motors directly connected to the mains shall be protected against short -circuiting.  494 
4.7.2.1  Except as Motors directly connected to the mains shall be protected against overloads by means 495 
of manual res et, automatic  circuit -breakers which shall cut off the supply to the motor  in all live conductors.  496  
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 4.7.2.1  When the lift motors are supplied from D.C. generators driven by motors, the lift motors shall also 497 
be protected against overloads.  498 
4.7.2.1  If the de sign temperature of electrical  equipment provided with a temperature monitoring device is  499 
exceeded and the lift should not continue in operation, then the car shall stop at a landing such as the  500 
passengers can leave the car. An automatic return to normal o peration of the lift shall only occur after  501 
sufficient cooling down.  502 
4.7.3  Main switches  503 
4.7.3.1  For each lift, a main switch capable of breaking the supply to the lift on all the live conductors 504 
shall be provided. Th e switch shall be capable of interrupting the  highest current involved in normal conditions  505 
of use of the lift.  506 
4.7.3.2  The switch shall not cut the circuits feeding:  507 
a) car lighting or ventilation, if any;  508 
b) socket outlet on the car roof;  509 
c) lighting of machinery and pulley spaces;  510 
d) socket outlet in the mach inery and pulley spaces and in the pit;  511 
e) lighting of the lift well;  512 
f) alarm device.  513 
4.7.3.3 The switch shall be located:  514 
a) in the machine room where it exists;  515 
b) where no machine room exists, in the control cabinet, except if this cabinet is mounted in the well, or 516 
c) at the emergency and tests panel(s) when the control cabinet is mounted in the well. If the  emergency 517 
panel is separate from the test panel, the switch shall be at the emergency panel.  518 
4.7.3.4 The main switches shall have stable open and closed position s, and shall be  capable of being 519 
locked -off in the open position, with the use of a padlock or equivalent, to ensure no  inadvertent operation.  520 
4.7.3.5  The control mechanism for the main switch shall be easily and rapidly accessible from the 521 
entrance(s) to the machine room. If the machine room is common to several lifts, the control mechanism of the 522 
main switches  shall allow the lift concerned to be identified easily.  523 
4.7.3.6  If the machine room has several points of access, or if the same lift has several m achine rooms 524 
each with its  own point(s) of access, a circuit breaker contactor may be used, release of which shall be 525 
controlled by an  electric safety device , inserted in the supply circuit to the coil of the circuit breaker  contactor.  526 
4.7.3.7  The re -engag ement of the circuit breaker contactor shall not be carried out or made possible 527 
except by means  of the device, which caused its release. The circuit -breaker contactor shall be used in 528 
conjunction with a  manually controlled isolating switch.  529 
4.7.3.8  Any ca pacitors to correct the power factor shall be connected before the main switch of the power  530 
circuit.  531 DRS 365 : 2017 
17                 ©RSB 2017 All rights reserved  
 
 4.7.3.9  If there is a risk of over -voltage, when for example the motors are connected by very long cables, 532 
the switch of  the power circuit shall also inter rupt the connection to the capacitors.  533 
4.7.4  Electric wiring , lighting and socket outlets  534 
4.7.4.1  Electrical wiring shall be done according to Rwanda National Building Code and relevant national, 535 
regional and/or international standards on electrical wiring.  536 
4.7.4.2 Electrical cables shall comply with the requirements of RSIEC 60227 -6 and shall be protected 537 
mechanically   538 
4.7.4.3  The electric lighting supplies to the car, the well and the machinery and pulley spaces, and  539 
emergency and test panel(s) , shall be indepe ndent of the supply to the machine  540 
4.7.4.4  All socket outlets shall have earthing system  541 
4.8 Protection against electric faults; controls; priorities  542 
4.8.1  During operation of one of the electric safety devices required in several clauses, movement of  the 543 
machine shall be prevented or it shall be caused to stop immediately  544 
4.8.2  Apart from except ions permitted in this standard, no electric equipment shall be connected in parallel 545 
with an electric safety device.  546 
4.8.3  The effects of internal or external induct ion or capacity shall not cause failure of electric safety  547 
devices.  548 
4.8.4  An output signal emanating from an electric safety device shall not be altered by an extraneous  signal 549 
emanating from another electric device placed further down the same circuit, wh ich would cause a  dangerous 550 
condition to result.  551 
4.8.5  In safety circuits comprising two or more parallel channels, all information other than that  required for 552 
parity checks shall be taken from one channel only.  553 
4.8.6  Circuits which record or delay signal s shall not, even in event of fault, prevent or appreciably  delay the 554 
stopping of the machine through the functioning of an electric safety device  555 
4.8.9  The construction and arrangement of the internal power supply units shall be such as to prevent  the 556 
appearance of false signals at outputs of electric safety devices due to the effects of switching.  557 
4.8.10  The operation of a safety contact shall be by positive separation of the circuit -breaking devices.  The 558 
separation shall occur even if the contacts have w elded together.  559 
4.8.11  The design of a safety contact shall be such as to minimize the risk of a short -circuit resulting from 560 
component  failure.  561 
4.8.12  The safety contacts shall be provided for a rated insulation voltage of 250 V if the enclosure  provides 562 
a degree of protection of at least IP 4X, or 500 V if the degree of protection of the enclosure is  less than IP 4X.  563 
4.8.13  The safety contacts shall belong to the following categories as defined in RS IEC  60947 -5-1: 564 
a) AC-15 for safety contacts in A.C. circui ts; 565 
b) DC-13 for safety contacts in D.C. circuits.  566 
4.8.14  Abrasion of conductive material shall not lead to short circuiting of contacts  567 
4.8.15  The controls shall comply with the requirements of RS ISO 4190 -5 568  
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 4.8.16  To facilitate inspection and maintenance, a  readily accessible inspection control station shall be 569 
provided  on the car roof.  570 
4.8.17  More than two inspection control stations shall not be installed.  571 
4.8.18  A stopping device shall be provided for stopping, and maintaining the lift out of service,  572 
4.8.19  The stopping devices shall consist of electric safety devices . They shall be  bi-stable and such that a 573 
return to service cannot result from an involuntary action.  574 
4.8.20  A stopping device in the car shall not be used except for cars with docking oper ation.  575 
4.8.21  In order to call for outside assistance, passengers shall have available in the car an easily  576 
recognizable and accessible device for this purpose  according to RS ISO 4190 -5 577 
4.8.22  The lift shall be fitted with a device to prevent normal start ing, including re -levelling, in the event of  578 
overload in the car  in accordance with RSISO 4190 -5 579 
4.8.23  The lift shall be installed with appropriate devices for soft landing and evacuation in case of 580 
emergency and/ or electrical cut off  581 
5 Notices, markings a nd operating instructions  582 
5.1 All labels, notices, markings and operating instructions shall be indelible, legible and readily 583 
understandable (if  necessary aided by signs or symbols). They shall be untearable, of durabl e material, 584 
placed in a visible posit ion, and written in at least two official  language s where the lift is installe d. 585 
5.2 Notices marking and operating instructions shall comply to the requirements of RS ISO 4190 -5 586 
6 Examinations - Tests - Register - Maintenance  587 
6.1 Examinations and tests  588 
6.1.1  The technical dossier to be supplied if applying for preliminary authorization shall contain the  589 
necessary information to ascertain that the constituent parts are correctly designed and the proposed  590 
installation is in conformity with standard  requirements  591 
6.1.3 Before putting into service, lifts shall be subject to examinations and tests in accordance with 592 
requirements of the relevant standard . 593 
6.2 Register  594 
6.2.1  The basic characteristics of the lift shall be recorded in a register, or file, drawn up at the lates t at the 595 
time the  installation is put into service. This register or file shall comprise:  596 
a) a technical section giving:  597 
1) the date the lift was put into service;  598 
2) the basic characteristics of the lift;  599 
3) the characteristics of the ropes and/or chains;  600 
4) the charact eristics of those parts for which verific ation of conformity is required ; 601 DRS 365 : 2017 
19                 ©RSB 2017 All rights reserved  
 
 5) the plans of installation in the building;   602 
6) electric schematic diagrams; the circuit diagrams may be limited to the circuits for the overall 603 
understanding of the safety  consideration s.; 604 
b) a section intended to keep duplicate dated copies of examination and inspection reports, with  605 
observations.  606 
6.2.2  This register or file shall be kept up -to-date in case of:  607 
a) impo rtant modifications to the lift ; 608 
b) replacement of ropes or important parts;  609 
c) accidents.  610 
6.2.3  This register or file should be  available to those in charge of the maintenance, and to the person or  611 
organization responsible for the periodical examinations and tests.  612 
6.3 Installer information  613 
6.3.1  The manufacturer/installer shall provide a n instruction manual  for normal use and maintenance  614 
6.3.2  The instruction manual shall give the necessary information about the normal use of the lift and 615 
rescue  operation, especially relating to:  616 
a) keeping the doors giving access to machinery and pulley spa ces locked;  617 
b) safe loading and unloading;  618 
c) precaution to be taken in case of lif ts with partially enclosed well ; 619 
d) events needing the intervention of a competent person;  620 
e) keeping the documentation;  621 
f) the use of the emergency unlocking key;  622 
g) rescue operation.  623 
h) necess ary maintenance of the lift and its accessories in order to keep it in working order;  624 
i) instruction for safe maintenance  625 
6.3.3  The instruction manual shall inform about periodical examinations and examinations after important 626 
modifications or accidents.  627 
6.3.4 Periodical examinations and tests on lifts sh all be carried out after they are put into service to verify 628 
that they are in good condition.  629 
6.3.5  Examinations and tests should be carried out after important modifications or after an accident to 630 
ascertain  that lifts contin ue to conform to this standard.  631  
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  632 FDRS 339 -1: 201 7 
ICS 67.230  
 
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 633