Exhibit 12 - Facade Maintenance System.pdf

Av. 25 de Septiembre de 1873 No. 58 Col. Leyes de Reforma, CP 09310

México, DF

Teléfono y Fax: (55) 5696-7909 01 800 5045 08 www.entec.com.mx

1.1 ROOF CAR

We are proposing a Scorpio Machine (Tractel) designed to move over rail tracks (steel hot deep galvanized).

The machine is a type ScD530BR18500-13500, with the following specifications:

• Jib length: Telescopic -18.5 m / 8 m

• Height of lift: 30 m

• Hoists: 1 – XDB500P-2x120 (Wire rope Ø8.4 mm)

• Track gauge: 3000 mm

• Cradle: 4.0 m x 0.6 m

• Spreader bar: Motorized rotative

• Turret: Slewing motorized

• Safe Working Load: 455 kg (3 Operators)

• Counterweight covers: Yes

• Control: Pendant control

• Add. Hoist Working Load Limit: 750 kg (with Tirak X800P)

• Colour: Standard - RAL 7046

• Power supply: 480 V / 60 Hz - 3P + T

• Total BMU dead weight : 24535kg

• Total Weight under load: 25740 kg

• Counterweight: 10500 kg

• Maximum reaction on wheel box: 14225 daN

BMU foreseen for anchored rail track type HEA 200 steel grade S355 supported every 2m.

1.- POWERED ROOF CARRIAGE

AND PLATFORM

México, DF

Teléfono y Fax: (55) 5696-7909 01 800 5045 08 www.entec.com.mx

480 V 60 Hz 30 A

Load and Reactions Chart

México, DF

Teléfono y Fax: (55) 5696-7909 01 800 5045 08 www.entec.com.mx

18.5 – 8.00m Spreaded bar

(rotative)

Turret (rotative)

Trolley

3.0 m

Aluminum Cradle 4.0 m

Jib

Additional load 750 kg

Counterweight

3.00m

Catwalk with handrail on carriage

México, DF

Teléfono y Fax: (55) 5696-7909 01 800 5045 08 www.entec.com.mx

RAIL TRACK.

ADDITIONAL LOADING SYSTEM

It is a system for lifting addittional elements, using a special winch: Tirak X800P

• Load capacity: 750Kg

AND PLATFORM

México, DF

Teléfono y Fax: (55) 5696-7909 01 800 5045 08 www.entec.com.mx

1.2 RAIL TRACK SYSTEM

It is a system integrated by steel hot deep galvanized I-beams with unions by screws and nuts, in pieces of 6 m. The curves are formed by 3 plates cut in a special design and assembled to simulate an I-beam.

For the support to the building is steel pole bases.

Steel hot galvanized rail track over steel pole bases. Steel hot galvanized rail track over concrete bases

Steel hot galvanized rail track over steel pole bases.

1/11 ref.: T-690 revision: 2 date: 07/2017 technical sheet

The SCORPIO equipment conforms to EU Directives and is manufactured in accordance with ISO 9001

Table of Contents

2.2.B. ROOF CARRIAGE - T-690 SCORPIO

2/11 revision: 2 date: 07/2017 technical sheet

The system consists of:

• mobile traversing trolley (roof car) with a slewing spreader bar on a single jib, and a turret enclosing the lifting mechanism and the controls,

• cradle suspended from the trolley by galvanised steel wire ropes.

All the operations are powered:

• lifting and lowering of the cradle

• traversing the trolley

• slewing the turret

• slewing the spreader bar.

Protection:

Trolley and cradle are manufactured from painted, hot dipped galvanised steel.

DESCRIPTION

Applications The SCORPIO Building Maintenance Unit (BMU) is a large size machine designed for cleaning and maintenance work on complex high rise buildings or structures with facades difficult to access, up to 280 m working height and even higher. Numerous iconic skyscrapers in the world have been equipped with SCORPIO BMUs. The standard cradle is designed to take two people together with their tools. Nevertheless SCORPIO machines allow suspension of additional loads such as longer platforms, pantograph cradles as well as additional load winches, a. s. o.

Functioning

Fig. 1. - SCORPIO - Movement axes

Optional movement axes

• Jib luffing

• Telescopic jib

• Telescopic mast

• Knuckle boom

Advantages

• Counterweights located at the rear end of the jib:

› reduced reaction forces on the roof, › small overall dimensions.

• Mast height may be customised depending on the parapet height.

• The SCORPIO basic design can be customized in order to meet the most demanding requirements.

Variants Variant Hoist Max. Lifting

Height*

SCORPIO single 1x TIRAK XD-300P 160 m SCORPIO dual 2x TIRAK XD-500P 280 m

*) depending on jib length (see Fig. 2).

Stability The equipment stability is ensured by applying the fac-tors of safety required by EN1808 between the weight of the cradle with its working load and the weight of the trolley with its counterweights (11).

Movement axes Traversing on rail tracks by two motor-driven wheels, with speed of 6.5 m/min.; negotiation of curves by means of swivel wheel assemblies (5) guided along the path by side guide roller wheels (8).

Slewing of turret (1) and spreader bar (28) by electrically powered motor driving a geared slewing ring.

Cradle hosting up/down control by electrically powered TIRAK™ (13) mounted in roof trolley turret.

3/11

D218

1310 1411 12 15 16 17 18 ref.: T-690 revision: 2 date: 07/2017 technical sheet

S = Single / D = Dual

18 = wheel span 1800 mm 20 = wheel span 2000 mm 25 = wheel span 2500 mm 30 = wheel span 3000 mm

B = rail / M = anchored

Machine Identification

Performances

Only on rail tracks (B-type model)

Fig. 2. - SCORPIO performances

15 / 20 = gear box capacity (ton) depending on the configuration

B ui ld in g he ig ht

[m

Jib length [m]

MUSTANG dual recommended

MUSTANG single recommended

SCORPIO dual

SCORPIO single

Customized models

4/11

13/16

4.1

18/19

28.1

5 7

28 28.1 18/19 ref.: T-690 revision: 2 date: 07/2017 technical sheet

Main components 1 Turret 2 Powered slewing ring 3 Trolley 4 Jib

4.1 Wire rope guide

5 Powered front wheel assembly 6 Geared motor with brake 7 Rear wheel assembly (not powered) 8 Side guide roller wheel 9 Reeler for power supply cable 10 Guide for power supply cable 11 Counterweight 13 TIRAK™ XD hoist 14 Geared slewing motor 16 Overload safety device 18 Upper limit safety device 19 Final upper limit safety device 20 Double wire rope reeler 21 Suspension wire rope 22 Cradle 23 Facade protection roller 24 Anti-collision bar

Fig. 3. - SCORPIO single - Main components

27 BLOCSTOP BSO fall arrest device overspeed (only on SCORPIO dual)

28 Spreader bar

28.1 Spreader bar geared motor

Fig. 4. - SCORPIO dual - Turret

5/11 ref.: T-690 revision: 2 date: 07/2017 technical sheet

Fig. 5. - Rail track

Fig. 6. - Standard cradle 2 m

Electrical circuit The electrical controls consist of the following main items:

a) On the building (not supplied by Tractel Secalt)

• Main switch located on roof.

• Power connectors, three phases + neutral + earth, positioned along the track, protected by a 30 mA residual-current device.

b) On the trolley (3)

• Power supply cable, stored on a reeler (9) mounted under trolley.

• Rescue control box.

c) On the cradle

• Main control box (26).

Safety Devices To ensure safe operation without danger to personnel the machine is fitted with a number of safety devices which monitor the correct operation of the various components and operate in the event of a breakdown or fault.

... on the cradle

• Emergency stop

• Lower anti-collision bar

... on the trolley

• Emergency stop

• Cradle upper safety limit switch

• Cradle final upper safety limit switch

• Electrical supply cable end limit switch

• Turret slewing end limit switch

• Spreader bar slewing end limit switch

• Traversing end limit switch

• Phase reversal safety device

• Manual lowering in the event of a power loss

• Detection of presence of emergency lowering crank handle

... integrated in the lifting mechanism

• Overload safety device

• Fall arrest safety device

• Slack wire rope safety device

• End of wire rope safety device

... optionals

• Upper anti-collision bar on cradle

• Low temperature safety device

• Anemometer

• Turret pinning in parking position for long jibs

• Jib anticollision detector

• Detection of rail presence (rail tracks with rail switches)

Rail track xed to concrete or steel post

Rail track

The equipment moves on fixed rail profiles (B model) or can be anchored on concrete posts (M model).

Cradles

2 m Cradle (single)

• Tubular hot dip galvanised steel structure, clad with perforated aluminium panels. Colour to match the trolley.

• Aluminium floor panels.

• Complete aluminium cradle as an option.

3 m Cradle (dual)

Aluminum structure.

Standard equipment

• Two foam rollers (23) allow the cradle to rest lightly against the facade (max. force 25 daN) and absorb the swinging movements.

• Four castor wheels fitted under the cradle allow manual movement on the ground.

• An anti-collision bar (24) fitted under the cradle prevents from collision with obstacles when lowering.

6/11 revision: 2 date: 07/2017 technical sheet

21.1

21.2

21.1

21.2

17.1

17.1

Compression springDrive pulley

Wire rope

Gripping rollers

Hoist The lifting mechanism TIRAK™ XD electric traction hoist is especially designed for man-riding. The operation of the TIRAK™ is based on the principle of pressure pulleys. The gripping of the wire rope in the pulley is achieved by a set of rollers, activated by a compression spring.

Wire rope diagram (single)

3 Trolley 13 TIRAK™ XD-300P hoist

17.1 Transducer*

20 Double wire rope reeler 21 Suspension wire ropes

21.1 Wire rope attaching point

21.2 Return pulley

22 Cradle 28 Spreader bar

* only on machines with MAGTRON™ control.

Wire ropes (single) On «Single» machines the cradle is suspended from the jib by two sheaved wire ropes. At the exit of the hoist the wire ropes are stored on a powered double reeler (20). The TIRAK™ XD-300P (13) is equipped with an overspeed safety brake. This brake acts in the event that the cradle descends too speedily.

Lifting Mechanism

Fig. 7. - TIRAK™ - Operating principle

Fig. 8. - Wire rope diagram - Single version

7/11 revision: 2 date: 07/2017 technical sheet

21.1

17.1 21.2

21.2

21.2

17.1

Wire rope diagram (dual)

3 Trolley 13 TIRAK™ XD-500P hoist

17.1 Transducer*

20 Double wire rope reeler 21 Suspension wire ropes

21.1 Wire rope attaching point

21.2 Return pulley

22 Cradle 27 BLOCSTOP™ BSO fall arrest device 28 Spreader bar

* only on machines with MAGTRON™ control.

Wire ropes (dual) On «Dual» machines the cradle is suspended from the jib by four wire ropes. At the exit of the hoists the wire ropes are stored on powered double reelers (20). On each hoist

(13) a BLOCSTOP™ BSO fall arrest device (27) acts in the event that the cradle descents too speedily.

Fig. 9. - Wire rope diagram - Dual version

8/11 revision: 2 date: 07/2017 technical sheet

TECHNICAL SPECIFICATIONS

Trolley

Single Dual

Traversing by brake motor 0.37 / 0.75 kW 50 Hz / 60 Hz 0.37 / 0.75 kW 50 Hz / 60 Hz Traversing speed 6.5 m/mn 6.5 m/mn Lifting hoist type 1x TIRAK™ XD-312P 2x TIRAK™ XD-500P Nominal capacity 350 daN 500 daN Fall arrest device incorporated 2x BLOCSTOP™ BSO 500 Power supply cable 4G-2.5 4G-2.5 Useful length 20 m 20 m

Cradle

Dimensions 2,000 x 600 mm 3,000 x 600 mm Nominal load version CE or ... 240 kg 240 kg ... max. number of persons 2 2 Deadweight ±110 kg ±130 kg Lifting / lowering speed 8.5 m/mn 8.5 m/mn Max. lifting height 160 m can be adapted to any building height Suspension wire rope Ø 6.5 mm, 5 strands Ø 8 mm, 5 strands number 1 + 1 2 + 2 guaranted breaking load 2,840 daN 5,000 daN

CONTROLS

All control systems in Tractel Secalt Building Maintenance Units bene t from a clever conception and from the selection of high-quality components which guaranties outstanding reliability.

The complexity of the machine determines the control system to be chosen:

1. For simple machines the traditional control system without PLC is the right choice due to its high reliability and easy maintenance.

2. Additional safety devices (automatic stop levels, anemometers, ...) make it necessary to use a PLC.

3. The MAGTRON™ remote control patented by Tractel Secalt S.A. ensures the duplex transmission of data by induction of a magnetic eld through the suspension wire ropes between cradle and roof car (trolley). When the lifting height exceeds 80 m the electrical cable connecting the cradle to the roof car represents a heavy load. Frequently this cable is replaced by suspension wire ropes with integrated electrical wires which are very costly when the wire ropes must be changed. With the MAGTRON™ technology always associated to a PLC no electrical cable is required between cradle and roof car. The cradle control box is powered by a rechargeable battery.

9/11 revision: 2 date: 07/2017 technical sheet

T1 T1

F1

S.A.

MISE EN PARKING

NACELLE

SHUNT

ANTICOLLISION BAR

ABSCHALTUNG

KORBBODENTASTER

ARRET D'URGENCE

EMERGENCY STOP

NOT AUS

SURCHARGE

OVERLOAD

UBERLAST

D

E

F

O

G H

P N M

IQ

C Z

JR

L K

T S o

I

B

A

34**

T1 T1

F1

T1

F1

T1

34**

C Cradle start control D Emergency stop E Anti-collision bar shunt F Overload indicator G Lift cradle H Lower cradle I Slew spreader bar left J Slew spreader bar right K Slew turret left L Slew turret right M Jib/mast up* N Jib/mast down* O Traversing left P Traversing right Q Retract telescopic jib

(option) R Extend telescopic jib

(option) S Hoist T1 down (option) T Hoist T1 up (option)

Z Store/con rm automatic stop (option)

A Main switch and emergency stop

B Rotary keyswitch for RESCUE control or CRADLE control

D Emergency stop

34 Keypad for RESCUE operations**

43 Buzzer 44 Fault code display 45 Fault code list

* Depending on the equipment

** Keypad identical to that of cradle

CRADLE main control box

Trolley control box with keypad for RESCUE control

Option: removable r e m o t e c o n t r o l panel with keypad and emergency stop button.

Machine with PLC

Fig. 10. - Control boxes of machines with PLC

10/11 revision: 2 date: 07/2017 technical sheet o

I

B

A

DEFAUT CHARIOT

TROLLEY FAULTY

DACHWAGEN-

FEHLER

SURCHARGE

OVERLOAD

ÜBERLAST

EN SERVICE

IN ORDER

IN BETRIEB

BATTERIE

BATTERY

BATTERIE

ARRET D' URGENCE

EMERGENCY STOP

NOT AUS

MISE EN PARKING NACELLE

SHUNT ANTICOLLISION BAR

ABSCHALTUNG

KORBBODENTASTER

F1

T1 T1

U

D

E

F

V

W

O

G H

P N M

IQ

C Z

JR

L K

T S

F11F111F1F1F1F1F1F1

1T111T1T1T1T1

T1T1T111T1T1T1T1TT

T1

F1

T1

34**

C Cradle start control D Emergency stop E Anti-collision bar shunt F Overload indicator G Lift cradle H Lower cradle I Slew spreader bar left J Slew spreader bar right K Slew turret left L Slew turret right M Jib/mast up* N Jib/mast down* O Traversing left P Traversing right Q Retract telescopic jib

(option) R Extend telescopic jib

(option) S Hoist T1 down (option) T Hoist T1 up (option) U Machine ready indicator V Trolley fault indicator W Battery low indicator Z Store/con rm automatic stop (option)

41 Battery connector

A Main switch and emergency stop

B Rotary keyswitch for RESCUE control or CRADLE control

34 Keypad for RESCUE operations**

43 Buzzer 44 Fault code display 45 Fault code list

*) Depending on the equipement

**) Keypad identical to that of cradle

CRADLE main control box (MAGTRON™)

Trolley control box with keypad for RESCUE control

Option: removable r e m o t e c o n t r o l panel with keypad and emergency stop button.

Machine with PLC and MAGTRON™

Fig. 11. - Control boxes of machines with PLC and MAGTRON™