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Subject to changes without notice !

Änderungen vorbehalten !

Gearless Lift Machine

WSG-SF

Operating Instructions

Code: GM.8.004284.EN

Date:

28. Jan 2020

Version: 0.16

Page: 107

Maintenance and repair

INTORQ | BA 14.0214 | 09/2017

7.5

Ordering spare parts

INTORQ BFK464-

R, complete stator

Accessories

Electrical accessories
Rectifier type: When selecting, refer to

Size

Design

Voltage

  103 V / 51.5 V
  103 V / 72 V
  205 V / 103 V
  360 V / 180 V

Brake torque

________ Nm

Cable length

standard (600 mm)

___________ mm

Hand-release, mounting kit

Armature plate

standard

Micro-switch

monitoring the switching function

Switching noises

damped (low noise)

Rotor

for toothed shaft
for hub with key connection

Hub

___________ mm (for bore diameter, see dimensions)

Flange

Fastening screws

for mounting to the motor
for mounting with the flange with pass-through holes

Sealing

Cover ring

Rectifier

BEG-561-255-130
BEG-561-440-130

Содержание WSG-SF Series

Страница 1: ...ruck bersetzung und Vervielf ltigung in jeglicher Form auch auszugsweise bed rfen der schriftlichen Genehmigung von WITTUR nderungen vorbehalten info wed wittur com www wittur com Copyright WITTUR 202...

Страница 2: ...ITTUR Electric Drives GmbH reserves the right to correct or change the contents of this manual and these product details without prior notice We expressly reserve the right to make technical changes w...

Страница 3: ...ons 19 6 3 Overview 19 7 Commissioning and operating 20 7 1 Important notes 20 7 2 Emergency evacuation 21 7 3 Testing the brake system to EN 81 22 7 4 Trouble shooting 23 8 Maintenance 24 8 1 General...

Страница 4: ...due regard to their performance limits WSG SF lift machines are not ready to use products they may only be operated after they have been installed in lift systems and their safe operation has been en...

Страница 5: ...Check the proper functioning of the motor and the brake after installing the machine Repairs may only be carried out by the manufacturer or an authorised repair agency Unauthorised opening and tamperi...

Страница 6: ...Subject to changes without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 6 3 EU Declaration of Conformity...

Страница 7: ...he specified machine weight i e additional loads must not be applied Danger of breakage 4 2 Storage Climate class 2K3 nach EN 60721 Storage tempera ture 20 C to 60 C max 20 K hour fluctuated Storage a...

Страница 8: ...less WSG SF synchronous lift machines are designed for traction sheave lifts They are distinguished by their high efficiency extremely low noise and excellent operating characteristics The machines ca...

Страница 9: ...diagrams must be used 30 40 50 60 0 6 0 7 0 8 0 9 1 0 tA C k 0 1000 2000 3000 4000 0 6 0 7 0 8 0 9 1 0 h m k a Mpermiss MdN k ka bzw Ppermiss PdN k ka 5 3 Motor design 5 3 1 Insulation system All insu...

Страница 10: ...assigned B temperature sensor C Pin contacts of flanged con nector socket exterior temperature sensor D The electrical connection of the motor and the winding temperature sensors is made by a rotatabl...

Страница 11: ...WSG lift machines with a synchronous motor WSG is matched to the associated inverter Do not change the adjustment as this may make it impossible to use the motor On the measuring system housing there...

Страница 12: ...ation f AC side switching is recommended for normal operation since the lift machine is then decelerated in a controlled manner to zero speed and the switching noise of the brake is negligible f When...

Страница 13: ...ke A type 231 104 037 000 connector from WAGO can be used as the female plug Included in the scope of delivery C NC NO Br C NC NO Br 45 78 332 2998 1 2 3 4 5 6 7 8 1st partial brake 2nd partial brake...

Страница 14: ...561 S10 K275 S10 K275 1 2 3 4 1 2 3 4 DC side switching and separate control of the partial brakes K1 and K2 must switch simultaneously to the 2 nd partial brake to the 2 nd partial brake release to c...

Страница 15: ...achine is fitted with a rope guard on the left and right 1 2 A third rope guard 3 is available on request A list of the rope guard design depending on the traction sheave diameter standard option can...

Страница 16: ...less Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 16 Fastening rope guards Rope guard Information Rigid rope guard 1 f Fastening the rope guard...

Страница 17: ...tage E UN 400 V UZK 500 620 V DC X3 Rated speed nN z B 100 100 rpm with DT 240 mm v 0 63 m s suspension 2 1 159 159 rpm with DT 240 mm v 1 0 m s suspension 2 1 255 255 rpm with DT 240 mm v 1 6 m s sus...

Страница 18: ...oves on the traction sheave than the number of ropes used position the ropes either in the centre of the traction sheave or towards the motor end ok ok ok ok ok ok The measuring system is only accessi...

Страница 19: ...The following notes should help you to carry out the assembly and wiring in an appropriate sequence without overlooking anything Site Please note the intended use and the permissible ambient conditio...

Страница 20: ...fastening bolts have all the bolts been tightened to the specified torque and secured Has the motor been properly connected including the motor protection Has the PE terminal been properly connected...

Страница 21: ...e Is the brake opened manually the cabin moves in the direction of the higher weight The motor winding has to be short circuited via the motor contactors With the short circuit the motor cre ates a br...

Страница 22: ...a brake If one brake fails the brake system must still be capable of decelerating the car sufficiently during its down ward travel at rated load and rated speed When simulating the failure of one brak...

Страница 23: ...g system does not release Braking system is not supplied with voltage Check electrical connection Brake mechanically blocked Remove mechanical blocking Brake control unit defective Replace brake contr...

Страница 24: ...to be carried out by the lift fitter maintenance technician for liability reasons Bolt screw tightening torques When performing any work on the machine or replacing parts make sure that the specified...

Страница 25: ...m and inform customer service f Unit power off Lock out and tag out Motor and brake have to be de energised Necessary tools Feeler gauge 0 05 1 0mm Observe the brake operating manual from page 62 Remo...

Страница 26: ...M 8 bolts 1 at the pressure disc and the pressure disc 3 itself 1 2 4 3 5 3 6 1 Insert two fastening bolts 2 into the outer hole circle of the pressure disc 3 and into the traction sheave Insert a 4...

Страница 27: ...N 1313 and ERN 1387 Heidenhain f The measuring system is only accessible from the rear side of the motor f See the mounting instructions for the Heidenhain encoder f Disassemble the measuring system o...

Страница 28: ...40 C Max rel humidity 85 at 20 C no moisture condensation Dual circuit fail safe brake Motor WSG SF 1 WSG SF 2 WSG SF 3 WSG SF 4 S Brake BFK 464 17R BFK 464 18R BFK 464 18R BFK 464 20R Max braking to...

Страница 29: ...rents applicable to 500 620Vd c link voltage v nN PN IN nN PN IN nN PN IN nN PN IN nN PN IN nN PN IN nN PN IN nN PN IN ms rpm kW A rpm kW A rpm kW A rpm kW A rpm kW A rpm kW A rpm kW A rpm kW A 0 5 11...

Страница 30: ...130 120 92 105 C 133 5 117 103 133 5 117 103 133 5 117 103 109 5 103 109 5 133 5 117 103 109 5 L 532 520 501 532 520 501 660 636 617 617 617 617 660 636 617 617 B 190 190 270 270 270 JG kgm2 0 13 0 1...

Страница 31: ...02 ECN 1313 EnDat 514 273 022 xx E Pack Arkel ARCODE ECN 1313 EnDat SSI 503 325 021 xx D Pack Arkel ADrive CT unidrive SP ECN 1313 EnDat SSI 502 452 021 xx Fuji Frenic ECN 1313 EnDat SSI 502 679 022 x...

Страница 32: ...ake cable halogen free 508 828 222 xx halogen free 510 676 011 xx Pin Wire 1 U1 No 1 U1 4 V1 No 2 V1 3 W1 No 3 W1 PE green yellow C T1 No 5 BR1 D T2 No 6 BR2 Wire 1 brake 2 brake 3 switch 4 switch 1 b...

Страница 33: ...ds 2 Brake manual release remotely controlled 11 3 1 Manual lifting rods Hand release rods can be attached to the levers for easy opening of the brake Due to the machine accessibility this variant can...

Страница 34: ...t the ropes in place f Install the manual releasing device while the brake is disconnected from the power supply 1 Install the lever block 1 with two M 12 bolts in a suitable location in the vicinity...

Страница 35: ...Item Part Description Motor 01 traction sheave acc machine nameplate type code X4 02 Measuring system depending on spec Sendix 8 5873 BISS C 2048 incr clamping ring ECN 1313 SSI 2048 incr clamping rin...

Страница 36: ...anges without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 36 13 Annex Calculation of the traction sheave...

Страница 37: ...Subject to changes without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 37...

Страница 38: ...fo wed wittur com Phone 49 0 351 40 44 0 M S 21 08 2017 01189 Dresden www wittur com Fax 49 0 351 40 44 111 Germany Technical information 21 08 2017 Re WSG SF Traction sheave shaft Annex calculation o...

Страница 39: ...anges without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 39 Calculation of the traction sheave shaft WSG...

Страница 40: ...Subject to changes without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 40...

Страница 41: ...51 40 44 0 M S 08 05 2018 01189 Dresden www wittur com Fax 49 0 351 40 44 111 Germany Technical information 08 05 2018 Re WSG SF traction sheave 160mm Traction sheave shaft Annex calculation of the sh...

Страница 42: ...changes without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 42 EU type examination certificate EU BD 105...

Страница 43: ...Subject to changes without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 43...

Страница 44: ...Subject to changes without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 44...

Страница 45: ...Subject to changes without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 45...

Страница 46: ...Subject to changes without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 46...

Страница 47: ...Subject to changes without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 47...

Страница 48: ...changes without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 48 EU type examination certificate EU BD 1056...

Страница 49: ...king into account traction sheave diameter and car suspension v DTS x x n 60 x i v Tripping rated speed m s DTS Diameter of the traction sheave from rope s center to rope s center m 3 14 n Rotary spee...

Страница 50: ...g of the brake torque has to be secured against unauthorized adjustment e g sealing lacquer 2 5 The identification drawing no 5023876 or 5021979 including stamp dated 2017 09 11 shall be in cluded to...

Страница 51: ...ate No EU BD 1056 of 2017 09 11 Based on Application form from Co INTORQ GmbH Co KG of 2017 07 27 Page 1 of 1 Authorised Manufacturer of Serial Production Production Sites valid from 2017 07 27 Compan...

Страница 52: ...Subject to changes without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 52...

Страница 53: ...Subject to changes without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 53...

Страница 54: ...changes without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 54 EU type examination certificate EU BD 1034...

Страница 55: ...king into account traction sheave diameter and car suspension v DTS x x n 60 x i v Tripping rated speed m s DTS Diameter of the traction sheave from rope s center to rope s center m 3 14 n Rotary spee...

Страница 56: ...g of the brake torque has to be secured against unauthorized adjustment e g sealing lacquer 2 5 The identification drawing no 5021915 or 5023866 including stamp dated 2017 08 25 shall be in cluded to...

Страница 57: ...ate No EU BD 1034 of 2017 09 11 Based on Application form from Co INTORQ GmbH Co KG of 2017 07 27 Page 1 of 1 Authorised Manufacturer of Serial Production Production Sites valid from 2017 07 27 Compan...

Страница 58: ...Subject to changes without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 58...

Страница 59: ...Subject to changes without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 59...

Страница 60: ...ct to changes without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 60 EU Declaration of Conformity brake W...

Страница 61: ...Subject to changes without notice nderungen vorbehalten Gearless Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 61...

Страница 62: ...ess Lift Machine WSG SF Operating Instructions EN Code GM 8 004284 EN Date 28 Jan 2020 Version 0 16 Page 62 Brake operating instructions WSG SF www intorq com setting the standard www intorq com INTOR...

Страница 63: ...Q BA 14 0214 09 2017 2 This documentation applies to the Product key Not coded Connection voltage hub bore hole options BFK464 17R BFK464 18R BFK464 19R BFK464 20R BFK464 22R BFK464 25R BFK464 28R INT...

Страница 64: ...product key Bar code Designation Qty per box Rated holding voltage Rated torque Rated holding power Packaging date Addition CE mark Name plate Example Manufacturer CE mark Type see product key EC type...

Страница 65: ...Application as directed 12 3 Technical specifications 13 3 1 Product description 13 3 1 1 General information 13 3 1 2 Brakes 14 3 1 3 Brake release 14 3 1 4 Release monitoring 14 3 1 5 Hand release o...

Страница 66: ...ons 36 5 3 3 Permissible current load at ambient temperature 37 5 4 Electrical connection 37 6 Commissioning and operation 38 6 1 Important notes 38 6 2 Function checks before commissioning 38 6 2 1 F...

Страница 67: ...the information and notes relevant for them The Operating Instructions must always be in a complete and perfectly readable condition 1 2 Terminology used 1 3 Conventions in use This document uses the...

Страница 68: ...Coil power during release before voltage change over and 20 C PN W Rated coil power at rated voltage and 20 C Q J Quantity of heat energy QE J Max permissible friction energy for one time switching th...

Страница 69: ...tandstill t11 ms Delay during engagement time from switching off the supply voltage to the beginning of the torque rise t12 ms Rise time of the braking torque time from the start of torque rise until...

Страница 70: ...ible transport damage immediately to the shipping agent Visible deficiencies incompleteness immediately to the manufacturer as stated on the name plate 1 7 Disposal The spring applied brake consists o...

Страница 71: ...y to a complete stator The labelling is not included when components are delivered individually 1 9 Legal regulations Liability The information data and notes in these Operating Instructions are up to...

Страница 72: ...lowed to maintain safe trouble free operations and to achieve the specified product characteristics Only qualified skilled personnel are permitted to work on and with INTORQ components According to IE...

Страница 73: ...conditions prescribed in these Operating Instructions must not be operated beyond their corresponding power limits Any other use or excessive usage shall be deemed improper Possible applications of th...

Страница 74: ...rotation The wear increases as the switching energy increases operating speeds 18 The BFK464 spring applied brake is a single disc brake with two friction surfaces The braking torque is ap plied thro...

Страница 75: ...e pressure springs use the armature plate to press the rotor which can be shifted axially on the hub or on the toothed shaft against the friction surface The asbestos free friction lin ings ensure hig...

Страница 76: ...cified rated torques are reached safely after a short run in process However as the organic friction linings used do not all have identical properties and because environ mental conditions can vary de...

Страница 77: ...ecifications INTORQ BA 14 0214 09 2017 16 3 2 Rated data 3 2 1 Dimensions 1 1 Stator complete 2 Armature plate 6 Flange Type Air gap Perm wear Rotor thickness Mass of stator complete sLN 0 06 0 08 mm...

Страница 78: ...24 6 24 6 BFK464 18R 212 6 x M8x95 6 x M8x1051 36 1 BFK464 19R 220 M10 6 x M10x100 6 x M10x110 16 0 15 0 48 0 48 0 BFK464 20R 233 6 x M10x110 6 x M10x1201 21 0 20 0 71 0 BFK464 22R 252 BFK464 25R 282...

Страница 79: ...icate for higher speeds consultation with the manu facturer is required Disengagement time The disengagement time is not influenced by DC or AC switching operations t1 Engagement time t11 Reaction del...

Страница 80: ...will be de energized after the motor is at standstill AC switching is also possible not applicable to emergency braking In this case the engagement times increase approximately by a factor of 5 refer...

Страница 81: ...he AC voltage Spark suppressors are available on re quest depending on the coil voltage Heat Since the brake converts kinetic energy as well as mechanical and electrical energy into heat the surface t...

Страница 82: ...2 Necessary tools NOTICE The toothed hub and screws must not be lubricated with grease or oil Type Torque wrench Insert for hexagonal socket Allen screws Open end wrench Allen key for transport safety...

Страница 83: ...he spring applied brake 2 Check for completeness 3 Verify the name plate data especially the rated voltage 4 4 Installation Brake size Minimum requirements Use as counter friction surface Material1 Ev...

Страница 84: ...A 14 0214 09 2017 23 4 4 1 Install the hub onto the shaft Abb 4 Installing the hub onto the shaft 1 Insert the key into the shaft 2 Press the hub onto the shaft 3 Secure the hub against axial displace...

Страница 85: ...on 0 16 Page 85 Mechanical installation INTORQ BA 14 0214 09 2017 24 4 4 2 Brake assembly Install the counter friction surfaces Abb 5 Assembly of the flange 1 Hold the flange to the end shield 2 Align...

Страница 86: ...the rotor Abb 6 Assembly of the rotor 1 Push the complete rotor onto the hub and check that it can be moved by hand Do not use any lubricant Exception rotor with toothing that has been sprayed by the...

Страница 87: ...4 EN Date 28 Jan 2020 Version 0 16 Page 87 Mechanical installation INTORQ BA 14 0214 09 2017 26 Assembly of the complete stator Abb 7 Mounting the complete stator 1 Push the complete stator onto the s...

Страница 88: ...Date 28 Jan 2020 Version 0 16 Page 88 Mechanical installation INTORQ BA 14 0214 09 2017 27 Abb 8 Remove the transport locking device 3 Remove the transport safety bolts discard them 4 4 3 Check the ai...

Страница 89: ...shield must be checked 4 4 4 Cover ring assembly Abb 10 Cover ring assembly 1 Pull the cable through the cover ring 2 Push the cover ring over the complete stator 1 3 Press the lips of the cover ring...

Страница 90: ...stallation INTORQ BA 14 0214 09 2017 29 4 4 5 Hand release assembly optional Abb 11 Assembly of the hand release NOTICE The assembly of the hand release is carried out on the spring applied brake whic...

Страница 91: ...ust washers on the lever so that the lubricated coated sides face each other 6 Place four disc springs in alternate directions in each of the two sleeves 7 Finally insert the sleeves into the holes in...

Страница 92: ...L before adjusting the hand release Refer to 27 and 28 for this procedure Type sLN 0 06 0 08 mm Turn back degrees BFK464 17R 0 4 450 1 1 4 turn BFK464 18R BFK464 19R 360 1 turn BFK464 20R BFK464 22R B...

Страница 93: ...of unintended start ups or electric shock NOTICE Make sure that the supply voltage corresponds to the name plate data NOTICE If an emergency stop is carried out without the required suppressor circuit...

Страница 94: ...stions Abb 13 INTORQ BFK464 connection diagram Switching on K2 K4 must be switched on before or at the same time as K1 K3 Switching off Normal AC switching K2 K4 remain closed K1 K3 open Emergency sto...

Страница 95: ...s elapsed the bridge half wave rectifiers switch over from bridge rectifi cation to half wave rectification Depending on the design of the load an improvement of the switching be haviour or a reductio...

Страница 96: ...ons Fastening options Rectifier type Bridge half wave rectifier Output voltage for bridge rectification 0 9 x U1 Output voltage for half wave rectification 0 45 x U1 Ambient temperature storage operat...

Страница 97: ...214 09 2017 36 5 3 3 Permissible current load at ambient temperature 1 For screw assembly with metal surface good heat dissipation 2 For other assembly e g adhesive 5 4 Electrical connection DANGER Th...

Страница 98: ...temperatures vary Before the initial commissioning check the braking torque when the brake is being used on the custom er s friction surfaces If the brake is used as a pure holding brake without any...

Страница 99: ...r to bridge half wave rectifier 35 the measured DC voltage must correspond to the holding voltage refer to Tab 5 A deviation of 10 is permissible 7 Check the air gap sL It must be zero and the rotor m...

Страница 100: ...spend Bowden cable not included in the delivery package and pull with approx 800 N The drive must be able to be turned freely A low residual torque is permitted 15 Release the lever Torque must be ava...

Страница 101: ...armature plate must be attracted and the rotor must move without residual torque Measure the DC voltage at the brake After the over excitation time refer to bridge half wave rectifier 35 the measured...

Страница 102: ...alculation of the ser vice interval can be supported by the design program INTORQ Select NOTICE Braking torque reduction The air gap must not be re adjusted after it has been correctly adjusted during...

Страница 103: ...brakes are not serviced Therefore a maintenance strategy that is adapted to the particular operating conditions and brake loads must be de fined for every application For the spring applied brakes th...

Страница 104: ...gap with the maximum permitted air gap sLmax 16 4 If required replace the rotor completely Refer to 44 for the description NOTICE Brakes with defective armature plates socket head cap screws springs...

Страница 105: ...h off voltage 2 Disconnect the connection cable 3 Loosen the screws evenly and remove them completely 4 Remove the complete stator from the end shield Pay attention to the connection cable 5 Pull the...

Страница 106: ...n Please include the following information with the order Order number of the brake Position number of the spare part Abb 16 Spring applied brake INTORQ BFK464 R Item Designation Variant Complete hand...

Страница 107: ...ize 17 18 19 20 22 25 28 Design R Voltage 103 V 51 5 V 103 V 72 V 205 V 103 V 360 V 180 V Brake torque ________ Nm Cable length standard 600 mm ___________ mm Hand release mounting kit Armature plate...

Страница 108: ...resistance with the nominal resistance Refer to 16 for the values If resist ance is too low replace the complete stator Check the coil for short to ground using a multimeter If there is a short to gro...

Страница 109: ...the same on both sides Correct if required Air gap sL too small Check the air gap sL Rotor thickness too small Rotor has not been replaced in time Replace the rotor 44 Voltage not zero during function...

Страница 110: ...Aerzen Germany 49 5154 70534 444 49 5154 70534 200 info intorq com INTORQ Shanghai Co Ltd 600 6 B No 600 Xin Yuan Nan Road Building No 6 Zone B Nicheng town Pudong 201306 Shanghai China 86 21 20363 81...

Страница 111: ......

Страница 112: ...YOUR GLOBAL PARTNER FOR COMPONENTS MODULES AND SYSTEMS IN THE ELEVATOR INDUSTRY More information about Wittur Group available on line a WITTUR brand a WITTUR brand a WITTUR brand...

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