spec escalator

7/29/2019 Spec Escalator

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hursday, August 30, 2012

Project name: Dafu commercial hotel & service apartment

Project location: Gelang Patah

ECHNICAL REQUIREMENTS - COMMERCIAL ESCALATORS

1.00 SCOPE OF WORK

The complete supply, delivery, installation (including all the associated skilled/unskilled labor and the

hire of any mobile cranes for offloading purposes) testing and commissioning of 2 escalators.

2.00 DUTY OF ESCALATORS

The escalators shall be proven in use in a commercial environment (e.g. shopping center or office

building) and shall be capable of operating continuously for a period of 12 to 16 hours for 7 days a

week throughout the year.

The escalator components shall be designed to offer a service life of min. 100,000 hours without

replacement of major parts.

3.00 OPERATING ENVIRONMENT

he escalator shall be equipped and configured for indoor usage.

4.00 DELIVERY AND INSTALLATION

The tenderershall be required to visit thesite and establish anarea foroffloading the escalators and a

feasible route for installation of the escalators from the offloading area to their final location.

The tenderershall submitwith his tender full details of all thework necessary to enable such a route to

be established.

5.00 GENERAL SPECIFICATION - CODE COMPLIANCES

The whole of the equipment shall be in accordance with the latesteditionof EN 115:1995. It shall also

be in accordance with the requirements of this specificationwhere these requirements exceedthoseof

he EN standard.

he supplier shall be ISO 9001 and ISO 14001 certified.

5.01 RUSS

The escalator trusses shall be designed to accommodate the loadings and factors referred to in the

latest edition of EN 115. The trusses shall not deflect greater than 1:750 of the distance between

supports under a live uniformly distributed passenger loading of 5 kN/m² (load area = width of

escalator step x distance between supports). The truss shall be designed to accommodate the load

without intermediate (center) supports if the vertical rise is below 6 m.

The trusses shall be constructed of rolled steel sections, continuously welded where appropriate, and

reated with an approved rust inhibitor.

The trusses shall include all the frames, supports and reinforcements necessary for the support and

fastening of the mechanical parts of the escalators.



There shall be no cross members on the soffit of the truss, either inside or outside. The soffit plate

shall be 4 mm minimum thickness and welded and sealed to ensure it is oil tight.

All the necessary steelwork, trimming angles and bearing plates to support the escalators from the

building structure are to be provided and fitted by the building contractor.

The truss supports at each end shall be provided with isolation (anti-vibration) pads, which dampen

ibration and prevent structure-borne noise being transmitted to the building structure.

5.02 ESCALATOR DRIVE

The drive unit is locatedoutside thestepband, atthe upper end of the escalator. The chain sprockets

of the step band and the handrail driving wheels are driven via a duplex chain by a compact worm

gear with an electric motor, flange-mounted at the gearbox. The main driving shaft supports the chain

sprockets for the step band. The main driving shaft supports the handrail driving shaft via handrail

chain and handrail wheels. The drive system assures that the handrails are moved synchronouslywith the step band.

5.03 DRIVE MOTOR

The drive motor shall be continuously rated and of adequate size for the duty concerned in both

directions of travel. The drive shall be positive and quiet.

he tenderer shall include details of the motor within the tender.

The tenderer shall include within the tender a list of protection provided, which shall preferably be by

means of temperature sensitive devices in the motor windings with a magnetically operated overload

device to cater forstall conditions. The motorshall be provided with class F insulationand a minimum

ingress protection class of IP21.

5.0 BRAKE

The escalator shall have a "fail-safe"operational braking systemwhich shall be capable of bringing an

unloaded and loaded escalator to rest within the stopping distances given in the latest edition of EN

115 and maintaining it in a stationary position. The action of the brake shall be smooth so that the

step band is brought to a standstill without subjecting the passengers to sudden deceleration forces.

he brake shall be held off electrically and applied by spring pressure.

For escalators over 6 m vertical rise and/or which are subject to the "public service" requirements of

EN 115, an auxiliary brake shall be provided. This must be directly coupled to the main drive shaft of

he escalator.

Provision shall be made for the temporary release of the brake by means of a manually operated

release lever.

The escalator shall stop automatically in the event of the operation of any safety device or electrical

power failure.

Each escalator shall have the facility to lock the step band in position to enable work to be carried out

safely within the step band.



5.05 HANDRAIL DRIVE

To ensure the handrail runs synchronously with the step band, within a speed tolerance of 0% to 2%,

a chain from the main drive shaft to the handrail shaft shall be used.

A positivedriveandproper tensioning of the handrail shall be achieved atall times. At the newel endsthere shall be adequate sized rollers to guide the handrail around the newels. Each roller shall be

fitted with sealed ball bearings and be grease lubricated.

5.06 HANDRAILS

The endless rubber handrails shall be pre-stretched and provided with a nylon lining on the running

faces and suitably reinforced with steel or cord tension members to enhance service life. The

minimum breaking strength of the handrails shall be 27 kN.

he color of the handrail shall be Black.

5.07 STEP CHAINS

The step chains shall be specifically designed for escalator applications and be of the roller type with

heat-treated links to satisfy the requirements of the newels version of EN115.

In the interests of the environment and fire prevention, the step chains shall be of the sealed-for-life,

lubrication-free type which require no external oil lubrication. The links, pins and bushes shall be

suitably treated to prevent corrosion (e.g. zinc plated).

5.08 STEP CHAIN TENSION CARRIAGE

step chain tension device shall be provided in an easily accessible position in the lower machine pit.

The tension carriage assembly shall be mounted on rollers with adequate lateral guidance to prevent

skewing and shall be fitted with adjustable pressure springs to ensure uniform tensioning of the step

chains.

5.09 STEPS

The silver painted steps shall be of an interchangeable design of rigid high tensile die cast aluminum,

incorporating grooved tread plates and risers, and shall be capable of being removed and replaced

without removing the skirtings or inside balustrade. Multi-piece step assemblies are not acceptable.

The step rollers shall have sealed ball bearings which are permanently grease lubricated. The steps

are of distortion-resistant design, made of high tensile, die-cast aluminium. The tread plates have

narrow grooves. The inner width between the cleats is 5.7 mm (average). Similar to the tread plate,

the step riser is grooved vertically. Each step is provided with two step rollers of 75 mmdiameter with

encased, sealed-for-life ball bearings.

5.10 STEP COMBS

Step combs shall be manufactured fromyellow plastic and be easily replaceable. The escalator must

incorporate step guides of wear-resistant material to ensure precise lateral entrance of the step into

he comb.

Safety contacts shall be fitted to the comb plate, acting both vertically and horizontally, to stop the



escalator in the event of an object becoming entrapped between the steps and the combs.

5.11 SKIRTINGS

Rigid sheet steel skirting panels with a minimumthickness of 3 mm shall be provided adjacent to the

steps. They shall be coated with a black long-wearing friction reduction compound and adequatelysupported to prevent bending or deflection.

Flexible skirting panels with micro-switches shall not be accepted.

5.12 BRUSH GUARDS

Single brush guards shall be provided to protect the step/skirting gap. They shall follow the nose line

of the steps, running continuously throughout the length of the moving step band and terminating 50

mm before the comb plates at both ends. At each end of the brush guard there shall be a smooth

tapered aluminum leading piece to ensure that there are no sharp edges, which may be a hazard to

passengers. The holder/basis shall be made of black anodized aluminum.

5.13 FLOOR COVER PLATES

Single panel covers of steel/aluminum construction shall be provided at the escalator entrances,

covered with stainless steel with punched diamond pattern, black painted. The covers shall be

removable for maintenance purposes.

5.1 BALUSTRADES

The balustrades shall be of clear toughened glass of the impact resistant type. Their minimum

thickness shall be 10 mm and the panels shall be self-supporting without the need for mullions. The

panels shall be separated into standard lengths with the joints arranged at right-angles to the

handrails. The vertical height of the balustrade, both on the incline and the ends, shall be min. 900

mm.

Passenger fall protectionbarriers are to be installed outside the balustrades atboth ends of the unit for

additional protection to prevent passengers falling over the balustrade of the unit. They should be

made of toughened glass panels, with a stainless steel support bracket and a stainless steel fixing

base. The additional barrier height should be 1300 mm.

5.15 FINISHES

The inner/outer decking shall be of brushed stainless steel. The joints of all sections shall be of the

flush butted type.

5.16 OPERATIONAL MODE

The escalator shall run continuously, but shall reduce its speed after a pre-selected time if no

passengers are detected. If no passenger enters the escalator after an adjustable time, the escalator

stops. If a passenger is then detected, the unit re-accelerates or restarts in the pre-selected direction.

The reduced speed (stand-by-speed) shall beapproximately 40% of thenominal speed. Details of the

required speed, nominal and stand-by speed are shown in Schedule No.1 - Escalator Particular

Specification. The pre-selected direction must be visible via traffic lights; green and red colors are

required. Details of the traffic lights shall be provided with the tender.

5.17 SAFETY DEVICES



he escalators shall be equipped with the following safety devices and features:

5.17.1 - Emergency stop buttons for passengers in the top left and bottom right handrail inlet front

plates.

5.17.2 - Auxiliary brake is standard for units above 6 m vertical rise and is available as an option for

nits below 6 m.

5.17.3 - Broken step chain (chain tension) switches in the return station which stop the escalator in

case of failure of the step chain.

5.17.4 - Finger protection with contact at the handrail inlet at the balustrade heads.

5.17.5 - Comb plate impactdevice switches which stop the escalator in case objects become trapped

between the comb teeth and the moving step band.

5.17.6 - Step lowering device to switch off the escalator in the event of a step being lowered more

han 5 mm from its correct path.

5.17.7 - Step return guards at both top and bottom ends to provide protection to/from the step band.

5.17.8 - A locking device, with mechanical and electrical protection, to lock the step band in position

for when it is necessary to work within the step band.

5.17.9 - Speed sensor system, which electronically monitors the motor for over/under speeds and

step band reversal.

5.17.10 - Motor thermal protection for temperature monitoring.

5.17.11 - Main switch with thermal and magnetic release.

5.17.12 - Stopswitchesforengineers’usewithinupperandlowerendpits.

5.17.13 - Sockets for inspection use installed in the upper and lower machine compartments.

5.17.14 - Brush-type skirting deflectors to protect the gap between the skirting panels and the sides of

he step treads.

5.17.15 - ccess cover contacts.

5.17.16 - Handrail speed monitor.

5.17.17 - Missing step monitor.

5.17.18 - Diagnostic display.

5.18 WIRING

This includes the laying of all cables and conductors from the main circuit breaker in the control

cubicle to the individual controls, lighting, and safety devices inside the escalator.

All the electrical installation material must be suitable for humid conditions. The cables, switching



elements and electrical devices must be in accordance with CENELEC harmonized standards HD 21

and HD 22.

5.19 CONTROL SWITCHES

he control switch shall be mounted at the lower end of the escalator and shall be key operated.

5.20 BEARINGS

All bearings of rotating shafts are to be of a high quality, high precision and self aligning, and ball or

roller type as appropriate.

All bearings are to be selected to give, under an appropriate load profile for applications, a minimum

calculated design life of 100,000 hours (L10h) based on the ISO definition of life rating.

5.21 LUBRICATION

The tenderer shall define the method of lubrication and state by what means oil and other debris are

removed from the escalators at periodic intervals.

Where a drive chain is used to couple the drive unit to the main drive shaft, an electronic automatic

lubricationsystemshallbeprovidedwithsufficientoilcapacityforatleastonemonth’soperation.

5.22 NOTICES/SIGNS

wo notices per escalator shall be provided by the escalator sub-contractor depicting the following:

Small children must be held firmly

Dogs must be carried

Stand facing the direction of travel: Keep feet away from sides

Hold moving handrails.

Whenever possible these notices shall be in pictograph form in accordance with the requirements of

EN 115.

he above notices shall be fitted on site by other parties.

6.00 DOCUMENTATION

6.01 DRAWINGS

The drawing provided for the purpose of tendering shows typical escalators. It is appreciated that

dimensions could vary as far as the size of the upper and lower compartments are concerned. A

dimensional drawing shall be submitted with the tender to indicate the size required by the unit

included in the tender, together with all structural openings, and details of structural supports etc.

6.02 RECORDS

The tenderer shall supply two sets of record drawings and operating manuals on completion of the

installation.

6.03 ECHNICAL PUBLICATIONS



The tenderer shall supply illustrated and technical publications relating to the equipment offered and

any additional information requested within this document when submitting his tender.

7.00 SERVICING

The tenderer shall include 12 months of fully comprehensive service, commencing upon handover of the escalator to the employer. This shall include preventative maintenance, lubrication and

replacement of any worn or defective components.

The tenderer shall specify the costs for providing a 10-year fully comprehensive service contract

following the 12 months warranty servicing period. This contract shall be payable annually and shall

be only adjusted in accordance with the appropriate indices published by the national elevator and

escalator trade associations.

8.00 WARRANTY

A 1-year manufacturer’s warranty shall be provided, commencing upon handover of the escalator tohe owner.

9.00 SCHEDULE NO.1 - ESCALATOR PARTICULAR SPECIFICATION

9.01 General Design Criteria

N°ofescalators: 2

rrangement: Parallel 2 units

Inclination: 30°

ertical rise: 4500

Step width: 1000 mm

Nominal speed: 0.5 m/s

Horizontal steps: 2

rack transition radii: 1.0/1.0

Operational mode: Stop & Go and Stand-by speed

9.02 esthetic Features

Floor cover plates: Stainless steel with punched diamond pattern with black paint

Handrail inlet: Black plastic

Comb segment materials: Yellow plastic

Decking: Brushed stainless steel

Skirting: Sheet steel skirt with black anti-friction coating



Skirt brush deflector: Black anodized aluminum with single brush

Balustrade type: Glass balustrade

Balustrade height: 900 mm

Balustrade extension: None

Handrail color: Black

russ side cladding: Visible parts on the sides of the escalators shall be cladded by

Grey primed sheet steel cladding (RAL7036)

russ soffit cladding: Visible parts on the soffit of the escalators shall be cladded by

Grey primed sheet steel cladding (RAL7036)

Step type: Silver aluminum

Step demarcation: None

10.00 ELECTRICAL SUPPLIES

A 50Hz, 380V, 220V supply shall be provided by other parties. This supply shall be terminated in a

unction box, adjacent to the control cabinet, and be used for the main motive power required.

The tenderer shall detail the load requirements of each supply and the preferred locations of theincoming cables at the time of tender.

10.01 Electrical loadings:

Electrical Loadings

Motor power (kW) Starting mode pprox S.C. (A) Approx R.C. (A)

1x7.5kW via inverter 25.5A 17.0A

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