AIRCRAFT ARRESTING BARRIER Stanchion System with TEXTILE BRAKE AT-AB/1S TEK - TB10-150

Transcription

1 AIRCRAFT ARRESTING BARRIER Stanchion System with TEXTILE BRAKE AT-AB/1S TEK - TB BRIEF INTRODUCTION Published by Address Tel Fax Web-site : TekSav Teknoloji Elektrik Elektronik Makine Sanayi ve Tic. A.S. : Sokak No: 20 A.O.S.B. Cigli Izmir Turkey : (PBX) : :, yteder@gmail.com : Document no Date : : May 2007

2 REVISION SHEET DOC NO: DATE DESCRIPTION DONE BY APPROVED BY Sept Initial Dr. S. Akdurak May 2007 upgraded Dr. S. Akdurak May 2007 Revised and upgraded Dr. S. Akdurak All changes to this document have to be recorded to the revision sheet.

3 INDEX 1. INTRODUCTION OUTSTANDING FEATURES OF THE AT-AB /1 AIRCRAFT ARRESTING BARRIER SYSTEM GENERAL (TEXTILE BRAKE) PURPOSE OPERATION CAPACITY DESCRIPTION TECHNICAL DATA OPERATION CAPACITY OF TEXTILE BRAKE TB DIMENSIONS AND MEASURES Braking modules Arrestment Capacity INTRODUCTION OF STANCHION SYSTEM PREFACE AIM OF THE SYSTEM MAIN EQUIPMENT AND DESCRIPTIONS OPERATING CONDITIONS PHYSICAL DIMENSIONS STORAGE OF THE SYSTEM DESCRIPTION OF THE SYSTEM MOVEMENT CONTROL ROD ACTUATOR GUY WIRES PNEUMATIC POWER SYSTEM LOCKING SYSTEM ELECTRICAL CONNECTIONS AND ELECTRONIC CONTROL STRUCTURAL ASSEMBLY NITROGEN STORAGE TANK MASTS NITROGEN TUBES HIGH PERFORMANCE SYSTEM (OPTIONAL) CONTROLS REMOTE CONTROL WITH CABLE RADIO CONTROL (AIR CONTROL TOWER TO BARRIER) (OPTIONAL) TECHNICAL DATA REMOTE OPERATION OPERATION PRINCIPALS... 22

4 6.1 GENERAL AUTOMATIC RECHARGING OF THE NITROGEN STORAGE TANK RAISING OF THE BARRIER LOWERING OF THE BARRIER LOCKING AND UNLOCKING OF THE STANCHION SYSTEM LOCKING UNLOCKING SEPARATION OF THE STANCHION SYSTEM AND BARRIER NET AFTER ARRESTMENT STATUS OF THE POWER SYSTEM DURING OPERATION ILLUSTRATED PART LIST OF MAIN EQUIPMENT TOOLS DELIVERED WITH THE SYSTEM... 43

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6 MAST ASSEMBLY DURING PRODUCTION THE SHIPMENT

7 DURING PRODUCTION BARRIER NET BARRIER NET SITE INSTALLATION

8 1. INTRODUCTION AT-AB/1 is the main family of an aircraft arresting barrier systems produced by TEKSAV TEKNOLOJI A.S. The ATAB/1 is a complete aircraft arresting barrier installation consisting of the stanchion system with a multiple element net. The stanchion system of two identical assemblies installed one each side of the runway overrun, symmetrical to the center line. The system is remote controlled, with the trigger mechanism at either the control tower or a field cabinet located by the overrun equipped. Also, an option of radio remote control is available. Every AT-AB/1 arresting barrier is so manufactured that it can be coupled with 12-3f, 500s or TB textile brake systems. The couplings required for connection of the net to the 12-3f, 500s or TB brake system is furnished together with each system. The stanchion system and the brake system coupled to it can together arrest aircraft of up to lbs. With a velocity of maximum 190 knots in due course only a number of vertical strips may be damaged. The endurance of the horizontal elements is about 2200 kgf per strap. Connection elements are available at the bottom of the net attachment to the surface of the runway and the anchoring desks needed for this purpose are also furnished with the system. Depending on the braking system type and rated capacity, the energy absorbance ability above figures may change. During electricity cutoffs, the stanchion system with the net installed may be raised and lowered 5 times on energy supplied by batteries and nitrogen storage tanks. If the cutoff happens during operation -i.e. while the masts are going up or down-, the system continues to operate until the movement is completed. If, on the other hand, the cutoff takes place while the masts are fully raised or fully lowered, the system remains as it is. The barrier remote control panels at the control tower and at the field cabinet have luminous indicators for the positions ( up or down ) of the net as well as the status ( ready to operate - out of the order ) of the stanchion system. The panel also incorporates visual and audio alarm mechanisms and fault indicators. A red flashing lamp is installed at the base of the system to indicate whether the system is up or down. The stanchion system may be combined with i-28, t-30,t-40 or HP-40 type nets to form the barrier installation. (Unless otherwise specified, the system comes equipped with the t-30). The arresting net in all cases has no metal parts other than cutter pins. The stanchion system maintains the rigidity of the net in both raised and lowered positions. When raised, the lowermost point of the net s top line is at least 375 cm above the runway surface, adjustable by ± 30 cm. The stanchion system is able to raise the masts from fully lowered ( down ) position to fully rose ( up ) position and hence have the arresting net ready within less than 1.5 to 6 seconds. The barrier system is able to operate reliably within the ambient temperature range of -40 c c and in all sorts of weather conditions.. Each system is delivered complete with the tool set and equipment needed for periodical inspection, maintenance and repair of the system. The service life of the net made out of polyamide 66 and polyester is at least 3 years. This handbook covers the three main sections of AT-AB/1 aircraft arresting barrier. A) The Braking system (textile brake) B) Stanchion system C) The arresting net (not included in this handbook

9 1.1 Outstanding features of the AT-AB /1 aircraft arresting barrier system Variety of control methods: the AT-AB system offers the user great flexibility and security because it can be activated in any of the following ways: By remote control from a panel at the control tower. (radio control optional) By remote control from a field cabinet Manually by controls on the system (in cases of power cutoff) Modular circuit boards : repair and maintenance time is reduced to a minimum by modular circuit boards that may be removed and installed in a matter of minutes. Fault indicating lamps (LEDs) on all electronic modules: This eliminates the need to go through exhausting tests to locate faults. Built-in alarm mechanisms : the user is automatically warned when the system is out of order or may become so shortly.

10 2. GENERAL (TEXTILE BRAKE) This manual contains the necessary information and instructions for the installation, operation, maintenance and overhaul of the Aircraft Arresting Barrier with a Textile Brake TB Purpose The purpose of the Aircraft Arresting barriers is to safely stop an aircraft, which, for any reason would otherwise run off the end of the runway during a landing due to brake failure or reduced runway friction or an unsuccessful/aborted takeoff. The primary purpose of an aircraft arresting barrier is to save the lives of pilots. The secondary purpose is to prevent damage to the aircraft and to the landing facilities. During an arrestment by TB10-150, braking is provided by the tearing of special textile straps of which the textile brake is composed. 2.2 Operation Capacity The system is designed to operate at ; Ambient temperature range : -40 C to + 55 C Engaging velocities < 160 knots, : Energy absorbing capacity : Run out distance 108 MJ : <200 m Aircraft weight : max. 32 ton Maximum G : <2 G 90,0 80,0 engagement speed m/s 70,0 60,0 speed m/s 50,0 deaccel m/sn2 40,0 time t sec 30,0 20,0 10,0 0, distance (m) A

11 2.3 Description The textile brake system TB consists of two braking units Which comprising: A braking line, composed of two braking units each, Two extensions linking the braking units to the strops, Two strops for connecting the textile brake units to the net assy, The arresting system can be installed on concrete foundations (for permanent installation),or using earth anchors for temporary installation (not covered in this manual The material used in modules of the braking line must be from identical manufacturing lot which ensures the same braking force on each side of the runway. TB Figure -1 A

12 Figure 2a Figure 2b

13 Figure 2c

14 3. TECHNICAL DATA 3.1 Operation Capacity of TEXTILE BRAKE TB The system is designed to operate at ; Ambient temperature range Engaging velocities Energy absorbing capacity Run out distance Aircraft weight 3.2 : : : : -40 C to + 55 C < 160 knots, 108 MJ <200 m : <32 ton DIMENSIONS AND MEASURES Designation Braking line Extension Braking system (Without anchors) Braking modules Length (Without harness) Width (Without harness) Weight length of tear strap extension nominal length Strop Length Weight Kgs ea mt 0.35 mt 18 kg ea. 50 mt 6.8 mt 3 mt Arrestment Capacity At page 6 the performance characteristics of a TB is provided arrestment capacity versus engaging velocity and aircraft weight, decelerations vs. aircraft weight, The performances curve belongs to TB system when only seven modules per braking unit are used.

15 4. INTRODUCTION OF STANCHION SYSTEM 4.1 PREFACE This part of the handbook contains the introduction of "AT-AB/1 AIRCRAFT ARRESTING NET BARRIER AND STANCHION SYSTEM". Above mentioned systems is designed and produced by TekSav Teknoloji Elektronik ve Makina Sanayi Ticaret A.S. a corporation with its principal place of business at Address : Izmir Atatürk Organize Sanayi Bölgesi Sokak No: 20 Cigli - IZMIR / TURKEY 4.2 Telephone : (PBX) Fax : yteder@gmail.com Web page : AIM OF THE SYSTEM The AT-AB/1 Aircraft Arresting System is designed to arrest non-stopping aircrafts at either end of the runway in case of failure during taxiing before take-off or landing. The system operates automatically by pushing a button on a tower control panel or by the help of site control cabinet. It is also possible to lower the barrier net by releasing the air manually. Raising time can easily be adjusted between 1-6 seconds. 4.3 MAIN EQUIPMENT AND DESCRIPTIONS AT-AB/1 Aircraft Arresting Stanchion Systems are sited on both sides of the runway which are the same with each other consists of mainly (see Fig. 7.2) Movement Control Rod Actuators Guy wire Pneumatic Power System (valve group) Locking System Site Control Cabinet and Tower Control Panel Mounting System Nitrogen Storage Tank Masts Nitrogen Tubes Panel for Pneumatic Gauges and Valves

16 Descriptions : Raising Actuator : Cylinder Diameter : 250 mm. Stroke : 500 mm Rod Diameter : 70 mm Locking Actuator : Actuated by means of a 24 DC electric motor coupled a velocity reducer. Nitrogen Tubes : Volume : 40 Liters (2 ea.) Operation Pressure: 150 bar at 150C Test Pressure : 225 bar at 150C Nitrogen Storage Tank : Volume : 70 Liters Length : 2060 mm Diameter : 240 mm Operation Pressure: 40 Bar at 150C Test Pressure : 70 Bar at 150C Masts : Seamless, steel pipes Length : 7500 mm (telescope adjustment -/+200 mm) Outer Diameter : 180 mm 4.4 OPERATING CONDITIONS The necessary operating pressure to a raise TT-30, TT 2X20, I-28 nets or other nets with equal weight is between 18 and 25 bars. It is necessary to raise the pressure 6 bars more in case of using 40 elements nets. All equipments are designed according to operate between -400C and +550C ambient temperature. For a group sited only one runway end it is necessary to supply energy of 24 V DC and a power of 75 Watts. This power is supplied by a 12 V, 60 Ah batteries. The batteries are charged continuously and automatically by 220V, 50 Hz alternative current. Depending on the operation pressure, it is possible to make at least 15 raising without recharging the nitrogen tubes.

17 4.5 PHYSICAL DIMENSIONS DESCRIPTION QTY. PER. SYSTEM 1-Raising Masts 2-Nitrogen Tube 3-Actuators 4-Movement Control Rod 5-Nitrogen Storage Tanks 6-Chain Set 7-Guy wire ground fixing plates 8-Textile Net Total Weight A system per one end 4.6 UNIT WEIGHT (Kg) (Empty) MEASURES mm L=7500 D=180 D=170 L= x 920 x x 25 x 1080 L=2060 D=240 L= x 4000 STORAGE OF THE SYSTEM All the equipment, especially the textile net should be stored at a protected place and kept in transportation packing.

18 5. DESCRIPTION OF THE SYSTEM 5.1 MOVEMENT CONTROL ROD Two control rods with the measures 80 X 25 X 1080 mm. are located on both sides of the mast. These rods are connected to the mast flanges and to the base of the actuator by two 40 mm diameter pins spaced 1m apart. By the help of these rods the actuator drive load is transmitted to the mast. 5.2 ACTUATOR The piston rod is stationary and also attached to the main structure from one end. The actuator cylinder moves in the main structure by means of two rollers and transfers the movement to the mast. The stroke of the actuator system is approximately 500 mm. The inner diameter of the cylinder is 250 mm, and the diameter of the piston rod is 70 mm. Maximum operation pressure is 40 bars. The pressure chamber of the actuator is the place where the main movement is supplied. The second chamber is closed in normal position and is equipped with an air relief valve, and serves as back pressure chamber. While the mast is in lowered position the pressure in this chamber is zero. After raising the volume in this chamber decreases and so the pressure increases. By the help of air relief valve the air flow is regulated and thus the needed raising velocity is reached and the movement is damped. 5.3 GUY WIRES The tensile loads on the barrier suspension columns are transmitted to the steel guy wires and the needed suspension is so maintained. The guy wire system consists of an 11 meters long steel wire having 12 tons braking strength and a chain 4.5 meters long. The wire and the chain are connected by a quick fastened lock. By means of the chain the length of the guy wire is adjusted and it is connected to the ground by another quick-fastened lock. The length of the chain is adjusted according to the position of the anchor points and tensile of the net. The guy wire is connected to the textile net by means of a shear column which separates the net from the stanchion system when engagement occurs. 5.4 PNEUMATIC POWER SYSTEM The Pneumatic Power System includes the below mentioned units: Two pressure manometers; One HP (High Pressure) pressure manometer showing the nitrogen pressure in the nitrogen tubes One LP (Low Pressure) pressure manometer showing the pressure in the nitrogen storage tank A manual controlled pressure regulator which reduces the nitrogen pressure in the tubes to the needed operation pressure Nitrogen tubes charging system; Pressure control panel is mounted on a console which is on the main structure. This console is designed portable so it becomes possible to reach pneumatic components in case of repair or maintenance. A set of Solenoid Valves; These valves provide raising and lowering of the barrier. A double solenoid valve set is installed so that the system continues working in case of a failure of one set of solenoid valves.

19 The solenoid valves and the pressure regulation block are so connected to the piston rod that by disconnecting only the hoses and unplug the electrical cables the maintenance time is shortened. The necessary electric power supply for the solenoid valves is 24V DC -/+ 10%. The power consumption for one solenoid valve is approximately 14 watts. 5.5 LOCKING SYSTEM In order to avoid the risk of accidental raising of the masts during control and maintenance works a locking system is added. This locking system operates manually. After raising the red signal Flag mast the fixing rod is inserted into the hole and so the mast becomes fixed and locked. After doing this the red signal lamp becomes off automatically. After finishing the control and / or maintenance works the fixing rod is taken out and the red signal flag mast is lowered. In order to prevent the flag mast to be raised again this fixing rod is inserted in its place. Just during this position the red signal lamp on the stanchion system becomes on and at the same time the lamp on the tower control panel indicates that the system is ready to operate. WARNING: -LOCKING IS APPLIED DURING CONTROL OR MAINTENANCE WORK ONLY -NO PERMISSION IS GIVEN FOR CONTROL OR MAINTENANCE WORKS WITHOUT LOCKING THE MASTS. 5.6 ELECTRICAL CONNECTIONS AND ELECTRONIC CONTROL All the functions are controlled from the tower control panel or site control cabinet. Operating and repairing panel and cabinet are very simple. The tower control panel is connected to site control cabinet by an 8x1.5 mm2 cable. Raising units are connected to the site control cabinet by 4x1.5 mm2 or 4x2.5 mm2 cables having 8 conductors. Control system is procured as three main units: A) Raising units B) Site Control Cabinet c) Tower Control Panel It is possible to control the raising units both from tower control panel and site control cabinet. In case of any failure the led lamps indicate the failure section. This failure signal is given as sound and light on the tower control panel also. Detailed knowledge is given in the AT-AB/1 ELECTRIC AND ELECTRONIC CONTROL SYSTEM HANDBOOK.

20 5.7 STRUCTURAL ASSEMBLY The main body is manufactured of steel plates and steel profiles. In order to protect the actuator and pneumatic power system a metal plate cover is provided on the main body NITROGEN STORAGE TANK The nitrogen gas necessary for raising is stored in storage tank. This tank is a hollow cylinder flanged from both ends. With the gas stored in this tank only one raising is realized. On the mast rotation axis side there are pressure hoses and muffs to drain the tank. And also there is a globe valve to drain the condensed water and a spring safety valve. The volume of this tank is 70 liters MASTS Below mentioned elements procure a mast assembly: 180 mm outer diameter 170 mm inner diameter. (First part of the mast 3200 mm length) 160 mm outer diameter 150 mm inner diameter. (Second part of the mast 4300 mm length) (With a total length of 7500 mm, telescope adjustment, seamless steel pipe mast) A removable mast head placed on the upper end of the mast where the guy wire travels NITROGEN TUBES These tubes are used to store energy (high pressure nitrogen) for raising the masts. Each contains 40 liters of nitrogen gas at 150 bar (two tubes makes 80 liters) and serves at least for ten raisings at 25 bars. It makes raising at 18 bars HIGH PERFORMANCE SYSTEM (OPTIONAL) By adding four more nitrogen tubes (two for each side) it is possible to double raising operations without recharging the tubes. Those additional tubes are placed on special frameworks sided by the stanchion body. Additional connecting hoses are part of this system. 5.8 CONTROLS Manual control or remote control of the aircraft arresting system is possible. All action is reported back by lighting the front panel indicator LED lamps on RCU. System can also be remote controlled either with remote control unit (RCU) or by any air band radio wireless. All the electronic boards have conformal coating to protect against the environment.

21 5.9 REMOTE CONTROL WITH CABLE AT-AB/1 System can be remote controlled by the remote control unit (RCU). RCU is plugged in to radio receiver junction box on the system with a cable (four wires, two for power, 2 for the transmission of the serial signal RS232). On the remote unit (RCU), main switches are employed to raise up/down. In addition, indicator lamps will indicate the condition of the system 5.10 RADIO CONTROL (air CONTROL TOWER to BARRIER) (Optional) System l can also be remote controlled by any air band radio wireless, which usually exists as on board transceivers or at the control tower. Either by clicking known number of times on - off the PTT switch or by up/down buttons raising and lowering is accomplished. ICOM-A5 transceiver works for receiving the clicks from the aircraft and automatic receiver antenna is integrated to the system In the radio receiver control box, a microcontroller board manages the communication and control of the system TECHNICAL DATA TX/RX : MHz (Frequency: 118 to 136 MHz). The UNICOM frequency of MHz is commonly selected for the aircraft) : TX/RX AM and RX FM Modes Channel spacing : 25 khz Output power : 5W pep Receiver sensitivity : FM less than 1.0 microvolt (at 12 db SINAD) AM less than 1.0 microvolt (at 6 db SINAD) Selectivity : more than 7.5 khz /-6 db Less than 25 khz / -60 db The frequency can be selected 25 khz spacing by tipping in the channel number or turning the knob on top. Once frequency selection established, whenever the receiver is turned it automatically works at previously selected frequency. Squelch levels should be adjusted according to the environment. The transmitting radio must have the same frequency of the receiver on the system. In the radio receiver control box, a microcontroller board has jumpers to select modes of operation to control the system REMOTE OPERATION On the radio receiver junction box Put up the mains switch (SW1) and observe lamp (LP1) lit. Put up the antenna switch (SW2). If the system will be remote controlled than turn the switch to REMOTE position. If the system will be controlled manually then select the MANUAL position.

22 6. OPERATION PRINCIPALS 6.1 GENERAL Generally, the main functions performed by AT-AB/1 are as follows: A-Raising of the barrier B-Lowering of the barrier C-Separation of the stanchion system and barrier net after arrestment. 6.2 AUTOMATIC RECHARGING OF THE NITROGEN STORAGE TANK After raising operations, or in case of a leakage or because of temperature drop between charging the tank and raising of the barrier, the storage tank should be recharged at rated pressure for a probable raising. This function is automatically realized in AT-AB/1 system. 6.3 RAISING OF THE BARRIER After the raising command send by the remote control system below mentioned action takes simultaneously: The solenoid valves at the outlet of the nitrogen storage tank are energized (V1 and V2, 14 mm orifice diameter, actuator cylinder filling valves) and become open. Nitrogen passing through these valves fills the actuator cylinder and then the actuator travels and compresses the pressure chamber of the actuator and by the effect of the pressure piston rod travels and raises the mast. In order to obtain a fixed raising velocity there a needle valve is obtained. Besides this, a safety valve is obtained on the pressure collector to prevent probable pressure shocks. In order to limit the raising angle of the masts by less than 85 degrees there a limiting system is obtained. After reaching the desired raising angle the storage tank filling valves are de energized and become closed automatically. Just at the same time movement is limited by the pneumatic bumpers. 6.4 LOWERING OF THE BARRIER After lowering command sent by the remote control system or given from site control cabinet the two releasing solenoid valves (V3 and V4) are opened and the gas is released to the atmosphere. By means of two velocity control valves each sited in front of the valves V3 and V4 a slow lowering is obtained. At this instant filling valves are closed. NOTE: There is no gas consumption during lowering. Just the gas taken in the cylinder during raising is released to the atmosphere.

23 LOCKING AND UNLOCKING OF THE STANCHION SYSTEM LOCKING In order to avoid from a risk of accidental raising of the masts during control and maintenance works a locking system is added. This locking system operates manually. After raising the red signal flag mast the fixing rod is inserted in to the hole and so the mast becomes fixed and locked. After doing this the red signal lamp becomes off automatically UNLOCKING After finishing the control and / or maintenance works the fixing rod is taken out and the red signal flag mast is lowered. In order to prevent the flag mast to be raised again this fixing rod is inserted in its place. Just during this position the red signal lamp on the stanchion system becomes on and at the same time the lamp on the lower control panel indicates that the system is ready to operate. WARNING : -LOCKING IS APPLIED DURING CONTROL OR MAINTENANCE WORKS ONLY -NO PERMISSION IS GIVEN FOR CONTROL OR MAINTENANCE WORKS WITHOUT LOCKING THE MASTS. 6.6 SEPARATION OF THE STANCHION SYSTEM AND BARRIER NET AFTER ARRESTMENT At the beginning of the arrestment, when the air craft enters into the net the tension on the guy wires increases. This tension transfers directly to the shear columns and when the tension reaches 3000 kg (for each shear column) the shear columns are broken and separate from the stanchion system. After separation a part of the shear column is driven by the net while the other part remains with the guy wire. 6.7 STATUS OF THE POWER SYSTEM DURING OPERATION The status of the solenoid valves during raising and lowering operations are as follows: While raising the barrier two 1" solenoid valves are open. After reaching the desired raising angle those valves are de energized. During raising the lowering solenoid valves are closed and de energized. During lowering phase, two 1" lowering solenoid valves are energized and are open to atmosphere. Nitrogen gas coming from tubes as 150 bar decreases to the needed pressure after passing through pressure regulator and continuously recharge the storage tank.

24 7. ILLUSTRATED PART LIST OF MAIN EQUIPMENT Figure no: A A 7.9 B / AIRCRAFT ARRESTING BARRIER NET AND STANCHION SYSTEM GENERAL VIEW COMPLETE STANCHION SYSTEM MOUNTING PLAN MAST RAISING ACTUATOR LOCKING SYSTEM MOUNTING DETAILS LOCKING SYSTEM SCHEMATIC VIEW ILLUMINATED WARNING LAMP MAIN BODY ASSEMBLY. PNEUMATIC POWER SYSTEM PRESSURE MANOMETERS PRESSURE MANOMETERS MOUNTING PANEL HIGH PRESSURE NITROGEN TUBES NITROGEN STORAGE TANK SUSPENSION CABLES, GUY WIRE, ANCHORING PLATE SITE CONTROL CABINET BATTERY HOLDER TOWER CONTROL PANEL SCHEMATIC FLOW DIAGRAM OF PNEUMATIC SYSTEM LUBRICATION TABLE

25 FIG. 7.1: AIRCRAFT ARRESTING BARRIER NET AND STANCHION SYSTEM

26 FIG 7.2 STANCHION SYSTEM VIEW

27 FIG. 7.3: STANCHION ASSEMBLY

28 FIG. 7.4: MAST ASSEMBLY

29 FIG. 7.5: ACTUATOR ASSEMBLY

30 FIG. 7.6: LOCKING ASSEMBLY

31 FIG. 7.7: SIGNAL LAMP ASSEMBLY

32 FIG. 7.8: MAST ASSEMBLY

33 FIG 7.9 PNEUMATIC POWER ASSEMBLY

34 FIG. 7.10: NITROGEN TUBES ASSEMBLY

35 FIG. 7.11: NITROGEN STORAGE TANK

36 FIG 7.12 GUYWIRE ASSEMBLY

37 FIG. 7.13/1: SITE CONTROL CABINET

38 FIG. 7.13/2: SITE CONTROL CABINET INNER VIEW FIG : BATTERY HOLDER

39 FIG. 16/1 : PNEUMATIC FLOW DIAGRAM RAISED POSITION

40 FIG. 16/2 : PNEUMATIC FLOW DIAGRAM LOWERED POSITION

41 FIG. 17/1 : POINTS TO BE LUBRICATED

42 8. TOOLS delivered with the system TOOL BOX S/N ITEM DESCRIPTION MULTIMETER DOUBLE OPEN END SPANNER (12 pcs.) PLIERS SCREW DRIVER HAMMER (300 gr.) HAMMER (1000 gr.) FIRE EXTINGUISHER WHEEL BOLT TOOL JACK (4 tons) QUANTITY