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A-27 

 

A.8 AVVIAMENTO 

SPEGNIMENTO 
INATTESO DELLA GRU 

 

 
Esistono pericoli di, urto, 
schiacciamento, perdita del carico, 
perdita di stabilità dovuti all’avviamento 
a allo spegnimento accidentale e 
inatteso della gru. 
 

 AVVERTENZE 

 

-  Prima di cominciare ad operare con la 

gru è necessario controllare che vi sia 
sufficiente carburante e che la batteria 
del veicolo sia in buone condizioni. 

 
 

Non permettere a nessuno di 
avvicinarsi alla gru o all’autocarro 
mentre la gru è operativa 
(vedi §A.1.2). 

 
- È fatto obbligo all’operatore di avere 

sotto controllo la macchina dal 
momento in cui è operativa e di avere 
sempre a portata di mano i dispositivi 
di comando e di arresto. 

 

Le operazioni di controllo e 
manutenzione devono essere fatte a 
macchina e motore spento, con 
veicolo bloccato con freno e bloccato 
con apposite zeppe. 

 

A.8 UNEXPECTED 
START-UP AND SWITCH-
OFF OF THE CRANE 

 

 
Impact, crushing, load loss and stability 
loss hazards exist as a result of 
accidental crane start-up and switch-off. 
 
 
 

 WARNINGS 

 

- Before using the crane check that 

there is enough fuel and that the 
battery is in good condition. 

 
 
 
-  Do NOT allow anyone to approach the 

crane or truck during operation 
(see §A.1.2). 

 
 
- Those using the crane must be in full 

control of the machine with control 
and stop devices in easy reach from 
the moment of start-up. 

 
 
- Control and maintenance operations 

must be performed with the machine 
and engine switched OFF, the brake 
ON and wheels blocked using special 
chocks 

 

A.8 UNVERMITTELTES 
STARTEN UND 
ABSCHALTEN DES 
KRANS 

 
Bei unbeabsichtigtem und 
unvermitteltem Starten und Abschalten 
des Krans bestehen Stoß- und 
Quetschgefahren sowie Gefahren durch 
Verlust der Last und Stabilitätsverlust. 
 

 WARNUNGEN 

 

-  Vor der Kranarbeit muss sichergestellt 

werden, dass genügend Kraftstoff 
vorhanden ist und dass die 
Fahrzeugbatterie in einwandfreiem 
Zustand ist. 

 
- Keinem Unbefugten gestatten, sich 

dem Kran oder dem Lkw zu nähern, 
während der Kran in Betrieb ist 
(siehe §A.1.2). 

 
-  Der Kranführer muss die Maschine ab 

deren Inbetriebsetzung unter Kontrolle 
haben und die Steuer- und 
Stoppvorrichtungen stets griffbereit 
halten. 

 
- Für die Durchführung der Kontroll- 

und Wartungseingriffe müssen 
Maschine und Motor abgeschaltet, die 
Bremse angezogen und das Fahrzeug 
mit Bremskeilen blockiert sein. 

Summary of Contents for HA70

Page 1: ...H HA A7 70 0 MANUALE DELL OPERATORE ISTRUZIONI ORIGINALI OPERATOR S MANUAL ORIGINAL INSTRUCTIONS BEDIENUNGSANLEITUNG ORIGINALANLEITUNGEN 7845004 04 11 15...

Page 2: ......

Page 3: ...A POLIPO A 43 A 16 AVVERTENZE SUPPLEMENTARI PER TRIVELLA A 46 B MANUALE D USO B 1 B 1 PREMESSA B 2 B 2 IDENTIFICAZIONE B 3 B 3 DOCUMENTAZIONE E DESCRIZIONE GRU B 4 B 3 1 DOCUMENTAZIONE ALLEGATA B 4 B...

Page 4: ...TOIO OLIO C 5 C 2 4 PULIZIA DELLA GRU C 6 C 3 MANUTENZIONE PROGRAMMATA C 7 C 4 MANUTENZIONE STRAORDINARIA C 7 C 5 INATTIVIT C 7 C 6 MESSA FUORI SERVIZIO DELLA GRU C 8 C 6 1 DISINSTALLAZIONE C 8 C 6 2...

Page 5: ...A 16 SUPPLEMENTARY WARNINGS FOR DRILL A 46 B USE MANUAL B 1 B 1 PREMISE B 2 B 2 IDENTIFICATION B 3 B 3 CRANE DESCRIPTION AND DOCUMENTATION B 4 B 3 1 ENCLOSED DOCUMENTATION B 4 B 3 2 MARK B 5 B 3 3 SE...

Page 6: ...ANK C 5 C 2 4 CLEANING THE CRANE C 6 C 3 PLANNED MAINTENANCE C 7 C 4 EXTRAORDINARY MAINTENANCE C 7 C 5 INACTIVITY C 7 C 6 TAKING THE CRANE OUT OF SERVICE C 8 C 6 1 DISASSEMBLY C 8 C 6 2 STORAGE C 9 C...

Page 7: ...S TZLICHE HINWEISE F R SCHALEN MEHRSCHALENGREIFER A 43 A 16 ZUS TZLICHE HINWEISE F R ERDBOHRER A 46 B GEBRAUCHSHANDBUCH B 1 B 1 VORWORT B 2 B 2 KENNDATEN B 3 B 3 DOKUMENTATION UND KRANBESCHREIBUNG B 4...

Page 8: ...S LBEH LTERS C 5 C 2 4 REINIGUNG DES KRANS C 6 C 3 GEPLANTE WARTUNG C 7 C 4 AUSSERPLANM SSIGE WARTUNG C 7 C 5 STILLSTAND C 7 C 6 AU ER BETRIEB SETZEN DES KRANS C 8 C 6 1 DEMONTAGE C 8 C 6 2 LAGERUNG C...

Page 9: ...ntrol signals Steuerungshandzeichen B 27 Tab C 1 Grasso per manutenzione Grease for maintenance Schmierfett f r Wartung C 3 Tab C 2 Frequenza di ingrassaggio Frequency of greasing Schmierintervalle C...

Page 10: ...A 1 A MANUALE AVVERTENZE A WARNING MANUAL A ANWEISUNGSHANDBUCH...

Page 11: ...aximum oil flow rate to main control valve Overloads on the structure caused by excessive speed of movement Excessive oil temperature Maximum wind speed Excessive stress on crane structure Excessive o...

Page 12: ...centre before using or transporting the crane in a marine environment The lifting component to which the diagrams refer in this manual is the crane hook If other lifting components are to be used the...

Page 13: ...rivolgersi a un officina autorizzata Maintenance on the machine which requires welding is forbidden Refer to an authorised assistance centre if repairs or modifications to metalwork are required Es i...

Page 14: ...ing when stabiliser rods are retracted lower limb crushing under the plate for the stabiliser cylinders limb crushing in openings WARNINGS Cordon off the working area using barriers and warning signs...

Page 15: ...ace any limbs between the base and boom during crane closing Do NOT place lower limbs between the stabiliser cylinder and truck and do NOT place hands near the stabiliser rods during closing retractio...

Page 16: ...g Personnel must wear overalls Abide by safety distances and make sure all others do the same EN 349 see Tab A 1 Gef hrliche Situationen in denen der Kranf hrer oder Passanten vom Kran von den St tzen...

Page 17: ...bs between the boom joints near connecting rods or in the area where stabiliser rods are retracted into the base Do NOT insert fingers feet or limbs inside openings on moving parts Do NOT insert finge...

Page 18: ...impact with manual extensions impact caused by release of the load WARNINGS Take care not to bump into moving parts on the crane Specifically do NOT bang your head on the boom during crane opening an...

Page 19: ...ad is properly secured to prevent accidental falling Do NOT stand under the load If the crane is fitted with rotary stabiliser cylinders remain away from the cylinder to prevent unwanted impact If a m...

Page 20: ...ested in the maintenance manual Couplings may be damaged if they are too tight The crane is designed in such a way to prevent rubbing of flexible hoses against moving parts However the installation co...

Page 21: ...Carefully follow the stabilisation procedure instructions specified in the operator s manual Do NOT tamper with safety devices Stabilise the crane on firm ground WARNINGS Stabilise the machine in acc...

Page 22: ...e that the stabilizer feet are correctly deployed on ground and that this remains firm under their pressure If it does not retract the telescopic boom immediately place the load on the ground and incr...

Page 23: ...evices on the machine Check that all safety and protection devices are installed and functioning correctly before using the crane When a load is lifted for the first time proceed slowly and carefully...

Page 24: ...rial bumpy broken etc Fall hazard due to slippery or broken ground etc WARNINGS Do NOT use the crane on unstable ground Do NOT work on broken slippery or uneven ground Unexpected stops during movement...

Page 25: ...e operated at a distance D of at least 7 m from electricity power lines The crane can be used closer to electricity power lines if following notification to the electricity supply company suitable pro...

Page 26: ...control position 3 Do NOT touch any metal parts on the machine 4 Warn people nearby not to approach or touch the crane truck load or the person in the control position 5 Switch OFF the electricity po...

Page 27: ...insulator e g wood the crane is used near radio transmitters or high frequency switching systems and when a storm is approaching Static electricity can affect correct functioning of pacemakers WARNIN...

Page 28: ...RE WARNINGS Control positions must be located so that operators cannot touch hot surfaces 50 C EN 563 during normal crane functioning Specifically all hydraulic hoses containing fluid under pressure 5...

Page 29: ...er source WARNINGS Wear ear protection equipment if the noise level in the operating position exceeds 80 dB A as a result of other machinery or equipment in use A 5 VIBRATION HAZARDS There are no sign...

Page 30: ...osal of grease Fire caused by highly flammable hydraulic fluid Incorrect disposal of crane components and accessories WARNINGS TOXIC FUMES AND SUBSTANCES Control positions must be located so that oper...

Page 31: ...aste management company to dispose of used oil SPECIFIC HAZARDS Repeated and prolonged contact with the skin can cause itching rashes and dermatitis Irritant for the eyes Flammable do NOT use water to...

Page 32: ...ct with the skin can cause itching rashes and dermatitis Irritant for the eyes Flammable do NOT use water to extinguish hydraulic oil fires Use foam or CO2 Wear a gas mask in the event of fire In the...

Page 33: ...h a significant electromagnetic field Do not place the body under excessive strain when operating the crane If manual operations are required e g pivoting stabilizer legs manual extensions other lifti...

Page 34: ...re range of machine use as well as control emergency and safety devices An additional lighting system conforming to EN 1837 must be installed if the crane is used at night A qualified assistant must h...

Page 35: ...fear of heights Not under the effects of alcohol drugs or prescription medicines b Psychological Conduct in stressful situations Mental balance Sense of responsibility Operators must be able to read a...

Page 36: ...is enough fuel and that the battery is in good condition Do NOT allow anyone to approach the crane or truck during operation see A 1 2 Those using the crane must be in full control of the machine with...

Page 37: ...may cause the operator not to take into consideration hazards associated with normal crane use WARNINGS Do NOT remove modify or disable safety devices be they mechanical guards locks etc or electro hy...

Page 38: ...the rod 2 No crane components or accessories are protruding outside the profile of the vehicle 3 The special boom stop used to lock crane rotation and the visual luminous control indicating consent fo...

Page 39: ...crane Visually check that the hydraulic system is functioning correctly and that there are no fluid leaks between hoses and couplings Visually check the integrity of the machine structure and hoses Ch...

Page 40: ...is in the correct position relative to the frame of the truck Visually check the tightness of rotation cylinder securing screws and all nuts and bolts in general Check that pins hydraulic and manual...

Page 41: ...pected or accidental movement of loads Unsuitable worn or unsafe lifting devices accessories Lifting of people Use during high winds Risk of damaging load support surfaces following movement Uncontrol...

Page 42: ...ds not supported by objects secured solidly to the base of the crane unless the operator knows the precise size of the load being moved e g forklift truck leaving an excessive weight on the crane hook...

Page 43: ...out safety devices Risk of accidental loss fall slipping excessive rotation or tipping of the load and uncontrollable movements Using the machine under adverse weather conditions high winds Resting th...

Page 44: ...dequate capacity 3 Raise the crane by lift truck crane or bridge crane LIFT TRUCK Insert the forks under the base in correspondence to the indicated arrows Keep the 2 boom of the crane at truck side f...

Page 45: ...ers and use by unauthorised personnel failed power supply from the transmitter batteries tampering with devices human error contact with live internal radio control unit components WARNINGS Before sta...

Page 46: ...ore starting work inform other personnel in the area that the crane is to be operated using the remote control unit Do not use the transmitter at a distance from the receiver greater than that indicat...

Page 47: ...those using the vehicle must receive adequate training in accordance with ISO 9926 1 from those responsible for installing the crane on delivery Use by all other personnel is forbidden During work the...

Page 48: ...be fatal All covers marked with the following decal must only be opened by a qualified electrician after the service voltage has been cut Switch OFF the machine and the transmitter and contact an auth...

Page 49: ...and cutting hazard for upper limbs between the winch rope and drum and between rope and pulley Entanglement hazard in the rope Hazard involving contact with winch moving parts crushing between the dru...

Page 50: ...ons and without loose or baggy parts During operation do NOT approach or touch the moving parts on the winch drum rope press etc Before starting work carefully check the integrity of the thimble pocke...

Page 51: ...pe wear Always operate the winch with the counterweight In the event of broken or permanently deformed strands on the rope caused by crushing excessive strain etc contact an authorised assistance cent...

Page 52: ...ral damage hazard due to compression of equipment on load when using the crane boom Hazards due to maintenance performed under unsafe conditions WARNINGS Do NOT use this accessory to move forbidden lo...

Page 53: ...greater safe distance then this must be adhered to Only use the crane to lift free loads Do NOT use the crane to crash the bucket or grab against objects or material or to lift secured loads Release...

Page 54: ...accidental fall of the load may cause damage to property and injury to persons Before performing maintenance rest the equipment on the ground switch OFF the machine disconnect the control panel from...

Page 55: ...ation Structural damage and tipping hazard if the drill penetrates the ground but is unable to expel material WARNINGS Keep away from the area in which the drill is operating Always wear a helmet indu...

Page 56: ...B 1 B MANUALE D USO B USE MANUAL B GEBRAUCHSHANDBUCH...

Page 57: ...use of accidents Follow the instructions in this manual Always keep this manual in a safe place with the crane so that it is accessible to the operator at all times If the crane is sold the new owner...

Page 58: ...Hook Winch Forks Pole Bucket grab polyp Drill CLASSIFICATION EN 12999 Hoisting class HC1 Hoist drive class HD1 Stress history class S2 EX DIN 15018 1 Hoisting class H1 Loading class B3 EXPECTED OPERAT...

Page 59: ...taller must provide training for operators concerning all aspects of crane functioning at the moment of machine delivery in accordance with ISO 9926 1 The installer must give the final customer the fo...

Page 60: ...k only for EC cranes crane model serial number year of manufacture maximum load machine weight The plate is riveted to the column side The crane model and serial number are also engraved on the crane...

Page 61: ...Temperatura olio idraulico Hydraulic oil temperature Hydraulik ltemperatur 10 C 80 C Pendenza massima di lavoro Max working heel Max Arbeitsneigung 4 Resistenza del suolo Ground resistance Belastbark...

Page 62: ...is given below 1 Base 2 Column 3 1st boom cylinder 4 1st boom 5 Extension cylinders 6 Hydraulic extension 7 Stabiliser cylinder 8 Stabiliser extension beam 9 Slewing cylinder 10 Controls control valv...

Page 63: ...entary activation grab 2 Zusatzaktivierung Schalengreifer MA1 1 attivazione supplementare argano rotore 1st supplementary activation winch rotor 1 Zusatzaktivierung Seilwinde Rotator MG3 Estensioni id...

Page 64: ...No function Keine Funktion SW0 MG4 Estensioni idrauliche Hydraulic extensions Hydraulikaussch be SW1 MS Stabilizzatori Stabilizers Abst tzungen SW2 MG1 1 attivazione supplementare argano rotore 1 st...

Page 65: ...nal trigger switch MV avoids to change the movement speed from 0 released to max speed totally pressed The operator must press the trigger switch gradually only after having selected a crane control i...

Page 66: ...supplementare benna 2nd supplementary activation grab 2 Zusatzaktivierung Schalengreifer MA1 1 attivazione supplementare argano rotore 1st supplementary activation winch rotor 1 Zusatzaktivierung Sei...

Page 67: ...2 stabilizer beams extension HXL HML STABILITY CONTROL SYSTEM EC All EC cranes are fitted with electronic system control and with the stability control system NO X crane HXL system X crane HML system...

Page 68: ...cessary to retract the hydraulic extensions When the lifting cylinder is completely extended and one insists with the opening control the limiter could intervene even if the crane is unloaded To unblo...

Page 69: ...lve overcenter is fitted on the 1 st boom cylinder For the NO CE cranes itsr purpose is to block or lower the load if the pressure into the cylinders reaches the setting value So the crane is made saf...

Page 70: ...ne s movements can be stopped immediately by pressing one of the stop buttons To restore the normal operating conditions turn the head of the button until the release is engaged and the button returns...

Page 71: ...purpose is to lock automatically the stabilizer beams in their fully opened and closed position when the lever is turned downward AUTOMATIC STABLIZER BEAM LOCKS WITH SPRING NO AA Its purpose is to loc...

Page 72: ...a chiusura del cilindro stabilizzatore BLOCK VALVE ON STABILIZER CYLINDERS Its purpose is to lock mechanically the opening and the closing of the stabilizer cylinder SPERRVENTIL AUF ABST TZ ZYLINDERN...

Page 73: ...of the extension This device consists of anti extracting plates that allow the extension to slide freely between the fully retracted and fully extended position To remove the manual extension it s nec...

Page 74: ...tion of the slewing limiter after the crane sale must be made at an authorized workshop MECHANICAL LIMITER The device consists of two plastic spacers inserted inside the rotation cylinders so as to li...

Page 75: ...l to the control panel When the column of the crane gets to the limit of the prohibited area the limiter disables all movements except the rotation in opposite direction Only for X cranes in case of u...

Page 76: ...temperature of hydraulic oil when the indicator is in the red sector see fig 2 50 C it s dangerous to touch hydraulic elements because of their high temperature B 5 2 FILTER CLOGGING INDICATORS EC On...

Page 77: ...fting capacity Red sector the crane has reached the max lifting capacity 100 B 5 4 SIGNAL LIGHT TOWER The tower provides visual and audible warning signals to indicate the load level of crane Green li...

Page 78: ...r with additional stabilizers connected with a two color light installed in the cab 2 Red light indicates that one or more stabilizer extensions are not closed correctly Green light indicates that all...

Page 79: ...olour matching is as follow Instructions notices white background black characters Danger notices yellow background black characters Compulsory actions blue background white characters In the enclosur...

Page 80: ...nditions see A 1 1 B 7 2 DISTANCE FROM POWER LINES The crane should only be operated at a distance of at least 7 m from electricity power lines For further information and action to be taken in the ev...

Page 81: ...own in Tab B 2 B 7 4 BELASTBARKEIT VON BODEN Vor der Stabilisierung der Maschine muss berpr ft werden ob der Boden oder jede sonstige Auflage den von den St tzen erzeugten Druck aushalten kann Wenn di...

Page 82: ...l To prevent misunderstanding the following signals are suggested Das Mindestfl chenma A der Auflagefl che kann mit folgender Formel berechnet werden Fmax daN ist die maximale Kraft des Abst tzzylinde...

Page 83: ...see A 10 Presence and integrity of all decals on the crane The lifting component is suitable That filter clogging is less than the permitted level see B 5 2 This check should be made when the power t...

Page 84: ...peed recommended with the power take off engaged because the power take off might break and the operational speed of the crane would exceed the speed considered for the structural test on the machine...

Page 85: ...ilizer beam lock with lever A see B 4 4 3 Keep the M spring lock lifted with one hand and with the other one extend the beam by a few centimeters handling the suitable handle 4 Put the beam lock with...

Page 86: ...ghtly without however fully releasing its suspensions 7 Close the valve When all the stabilizer legs have been positioned check that the vehicle is level see A 1 6 8 Open the second stabilizers with t...

Page 87: ...es see A 1 6 2 Release the stabilizer beam lock with lever A see B 4 4 and turn the AA lever to 2 3 Extend the beam by a few centimeters with the MS control lever 4 Put the beam lock with lever back i...

Page 88: ...ully releasing its suspensions 7 Close the valve and rotate the AA lever to OFF When all the stabilizer legs have been positioned check that the vehicle is level see A 1 6 8 Extend the second stabiliz...

Page 89: ...4 PROCEDURE FOR OPENING THE CRANE The operator should open the crane from the column side to avoid collisions with moving parts of the crane see A 1 4 Lift the 1st boom by moving the MG2 lever so tha...

Page 90: ...s etc whose maximum capacity is lower than that be hoisted Apply the hoisting ropes ropes chains bands to the hook so that their safety is not compromised Lift the loads from centre of gravity and mak...

Page 91: ...e boom above the control position COMBINED MOVEMENTS The crane controls can carry out some manoeuvres at the same time by moving two levers simultaneously The speed of each movement decreases when usi...

Page 92: ...e from the column side to avoid collisions with moving parts of the crane see A 1 4 Close the hydraulic extensions of the crane 1 and move the 1st boom so that the 2nd boom can rotate freely 2 Rotate...

Page 93: ...that no part of the crane and no accessories are out of the truck profile see A 9 If for transport the crane is closed with the boom on the vehicle body make sure that the crane cannot move see A 9 If...

Page 94: ...The stabilizers can be closed exclusively when the crane is closed in transport position Always use the controls on the side on which you are operating the stabilizer Carry out the follow operations 1...

Page 95: ...andle 5 Put the stabilizer beam lock with lever back in the locked position B and fully retract the beam In this position the lock pin must be perfectly inserted in the beam and the elastic plate M mu...

Page 96: ...the crane is closed in transport position Always use the controls on the side on which you are operating the stabilizer Carry out the follow operations 1 Open the valve of the stabilizer cylinder and...

Page 97: ...position B and fully retract the beam In this position the lock pin must be perfectly inserted in the beam 6 Rotate the AA lever to OFF 7 Retract the second stabilizers with the same procedure 8 Remo...

Page 98: ...ower take off is out the stabilizing rods are blocked by the stabilizer lock device and the stabilizers legs are completely closed see A 9 the crane is in the rest position and there are no crane comp...

Page 99: ...dard crane WINCH This is a hydraulic device used to lift loads using a rope and a hook Load capacity depends on crane boom movement capacity and the lifting capacity of the winch Load capacity already...

Page 100: ...ty This value is punched on the end of each manual extension When you need to move a load with the manual extension always check that the load to be hoisted doesn t exceed the nominal capacity of the...

Page 101: ...the lock pin B 3 let the extension run until the holes on the extensions are lined up 4 insert the lock pin with the relative safety lock C REMOVING A MANUAL EXTENSION To disassemble the manual extens...

Page 102: ...cent limit switch The rope ascent limit switch blocks rope winding and prevents damage to the rope The device operates using a micro switch or pull limiter When this device is triggered only crane rot...

Page 103: ...other suitable means The operator must carry out the first few operations hoisting a modest load to no more than 1 m from the ground in order to check that the lowering operation is controlled If the...

Page 104: ...ONDITIONS Use of the equipment is forbidden before the machine on which it is installed is declared as conforming with Machinery Directive The bucket must be secured directly on the crane boom or as r...

Page 105: ...C 1 C MANUALE DI MANUTENZIONE C MAINTENANCE MANUAL C WARTUNGSHANDBUCH...

Page 106: ...centre All repair reports drafted by authorised assistance centres following routine and extraordinary maintenance must be recorded and archived by the owner of the crane C 2 ORDINARY MAINTENANCE The...

Page 107: ...rease nipple Insert new grease until the grease is coming out of the joints to ensure that all the old grease is replaced by new grease Carefully remove any excess grease Grease is a dangerous polluta...

Page 108: ...be reached from the ground Therefore get a ladder or another suitable means Do not climb on the crane C 2 2 SCHMIERPLAN Nicht alle Schmierstellen sind vom Boden aus erreichbar Daher eine Leiter oder e...

Page 109: ...uitable oil see B 5 1 Tab C 3 5 On completing the operation check that the plug is perfectly closed The hydraulic oil is a very polluting substance then it is to be moved with care and to be discharge...

Page 110: ...eaning agents under pressure which must never exceed 60 C in temperature In any case it is forbidden to direct pressurized jets close to the electric components and anyhow all the points marked with t...

Page 111: ...e C 4 EXTRAORDINARY MAINTENANCE Extraordinary maintenance means all maintenance not described as part of routine maintenance e g problems relating to crane defects and accidents Extraordinary maintena...

Page 112: ...s transport configuration 3 Detach the electrical connections from the truck s electrical system 4 Disconnect the hydraulic connections to pump and tank Beware of escaping oil 5 Connect the crane to a...

Page 113: ...ut all precautions in order to avoid leakage of polluting materials and substances of the crane oil grease plastic hoses etc see A 6 5 Protect the crane from atmospheric agents humidity marine environ...

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