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TWIN F 3.0 A / TWIN F 3.0 U

D1 5002BA1-GB01

32

7.8.3 Adjustment of autolevelling limit switch

(Ref. Figure 21)

The auto-levelling system’s limit switches are adjusted in factory and, for their specific
assembly with the spring, they don’t need others adjustments.

Figure 21 - ADJUSTMENT OF PLATFORM AUTOLEVELLING LIMIT SWITCHES

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Содержание Twin Series

Страница 1: ...D1 5002BA1 GB01 Twin Scissors Lift Twin F 3 0 A Twin F 3 0 U for vehicles up to 3 000 kg gross weight Operation Manual English ...

Страница 2: ... any kind These instructions are intended for users with previous knowledge in the field of automotive vehicle service lifts Subject to technical change without notice MANUFACTURER MAHA Maschinenbau Haldenwang GmbH Co KG Hoyen 20 D 87490 Haldenwang Allgäu Telephone 08374 585 0 Telefax 08374 585 499 Internet http www maha de e mail maha maha de SERVICE MAHA Maschinenbau Haldenwang GmbH Co KG Servic...

Страница 3: ...e terms and conditions of manufacturer agreement by which this lift was acquired nor increase in any way MAHA s liability to the customer TO THE READER Every effort has been made to ensure that the information contained in this manual is correct complete and up to date The manifacturer is not liable for any mistakes made when drawing up this manual and reserves the right to make any changes due th...

Страница 4: ...TWIN F 3 0 A TWIN F 3 0 U D1 5002BA1 GB01 II ...

Страница 5: ...s the operations which need proper care Indicates prohibition Indicates a possibility of danger for the operators Indicates the direction of access for motor vehicles to the lift BOLD TYPE Important information WARNING BEFORE OPERATING THE LIFT AND CARRYNG OUT ANY ADJUSTMENT READ CAREFULLY CHAPTER 7 INSTALLATION WHERE ALL PROPER OPERATIONS FOR A BETTER FUNCTIONING OF THE LIFT ARE SHOWN ...

Страница 6: ...TWIN F 3 0 A TWIN F 3 0 U D1 5002BA1 GB01 IV ...

Страница 7: ...APTER 2 PRODUCT IDENTIFICATION 3 3 CHAPTER 3 PACKING TRANSPORT AND STORAGE 5 4 CHAPTER 4 PRODUCT DESCRIPTION 7 5 CHAPTER 5 TECHNICAL SPECIFICATION 13 6 CHAPTER 6 SAFETY 19 7 CHAPTER 7 INSTALLATION 25 8 CHAPTER 8 OPERATION AND USE 33 9 CHAPTER 9 MAINTENANCE 37 10 CHAPTER 10 TROUBLESHOOTING 39 ...

Страница 8: ...TWIN F 3 0 A TWIN F 3 0 U D1 5002BA1 GB01 VI ...

Страница 9: ...ure 11 RISKS OF VEHICLE FALLING 21 Figure 12 SLIPPING RISK 22 Figure 13 OBSERVANCE OF TECHNICAL SPECIFICATIONS 22 Figure 14 RISKS FOR UNAUTHORISED USES 23 Figure 15 SAFETY BLOCK 25 Figure 16 HYDRAULIC PIPES CONNECTION 27 Figure 17 ELECTRICAL SYSTEM CONNECTION 28 Figure 18 FIXING ON THE GROUND 29 Figure 19 ADJUSTMENT OF MAXIMUM WORKING HEIGHT LIMIT SWITCH 31 Figure 20 ADJUSTMENT OF SAFETY HEIGH LIM...

Страница 10: ...TWIN F 3 0 A TWIN F 3 0 U D1 5002BA1 GB01 VIII ...

Страница 11: ...nicians of AUTHORISED DEALERS or SERVICE CENTRES AUTHORISED by the manufacturer shall be allowed to carry out lifting transport assembling installation adjustment calibration settings extraordinary maintenance repairs overhauling and dismantling of the lift THE MANUFACTURER IS NOT RESPONSIBLE FOR POSSIBLE DAMAGE TO PEOPLE VEHICLES OR OBJECTS IF SAID OPERATIONS ARE CARRIED OUT BY UNAUTHORISED PERSO...

Страница 12: ...TION AND USE 1 4 Warnings UNAUTHORISED CHANGES AND OR MODIFICATIONS TO THE MACHINE RELIEVE THE MANUFACTURER OF ANY LIABILITY FOR POSSIBLE DAMAGES TO OBJECTS OR PEOPLE DO NOT REMOVE OR MAKE INOPERATIVE THE SAFETY DEVICES THIS WOULD CAUSE A VIOLATION OF SAFETY AT WORK LAWS AND REGULATIONS ANY OTHER USE WHICH DIFFERS FROM THAT PROVIDED FOR BY THE MANUFACTURER OF THE MACHINE IS STRICTLY FORBIDDEN THE ...

Страница 13: ...as a consequence may present different features from these shown this without prejudicing what has been described herein 2 1 Warranty Certificate The warranty is valid for a period of 12 months starting from the date of the purchase invoice The warranty will come immediately to an end when unauthorised modifications to the machine or parts of it are carried out The presence of defects in workmansh...

Страница 14: ...TWIN F 3 0 A TWIN F 3 0 U D1 5002BA1 GB01 4 ...

Страница 15: ... cables four rubber blocks stickers and technical documentation No 4 drive on ramps 2 front and 2 rear ramps equipped with protective devices to connect platforms The model in ground installation No 2 base units each one with a platform and hydraulic cylinders No 1 control box equipped with hydraulic unit No 1 box containing hydraulic lines connection cables four rubber brackets 40 mm high sticker...

Страница 16: ...perature between 10 C and 40 C Stacking is not recommended the package s narrow base as well as its considerable weight and size make it difficult and hazardous Should this be necessary never stack more than three packages a time and fix them with straps ropes or other suitable means to be sure they are firm 3 4 Delivery and check of packages When the lift is delivered check for possible damages d...

Страница 17: ...m lifting weight including any additional load on the vehicle is 3000 kg 29400N All mechanical frames such as platforms extensions base frames and arms have been built in pressure bent plant to make the frame stiff and strong while keeping a low weight The electrohydraulic operation is described in detail in chapter 8 This chapter describes the lift showing the principal elements so allowing the u...

Страница 18: ...tensions 7 to allow longer wheel base vehicles to be lifted The lifting system of each platform is composed of four arms two lower 8 and two upper 9 arms as well as a pair of cylinders one primary 10 and one secondary cylinder 11 Motion is transmitted from the cylinder to the arms through a lever system 12 Lift lowering and lifting are carried out by means of a control box 13 fixed to the ground p...

Страница 19: ...TWIN F 3 0 A TWIN F 3 0 U D1 5002BA1 GB01 9 Figure 2 LIFT ...

Страница 20: ...t lamp 9 Horn signalling light 10 The main switch 11 lift identification plates 12 and safety indicating labels are placed on the side of the head The limit switch override button 13 is placed inside the control desk under the electric panel and on the printed circuit board the oil discharge button 19 The main hydraulic unit 14 and the connectors 15 are included in the lower part The hydraulic uni...

Страница 21: ...TWIN F 3 0 A TWIN F 3 0 U D1 5002BA1 GB01 11 Figure 3 CONTROL DESK ...

Страница 22: ...ydraulic system is protected by a max pressure control valve thus preventing pressure from exceeding the maximum fixed safety limit Lifting and lowering motion of the lift is controlled by the push buttons on the control desk panel Whenever the lift has to be lowered to the ground and the DOWN button is pressed the lift will stop at about 400 mm from the ground In this way the operator must verify...

Страница 23: ...3000 Kgp 29400N Maximum lifting capacity 1850 mm Minimum height of lift 120 mm Length of the lift 1540 mm Width of the lift 1950 mm Width of platforms 600 mm Free width between platforms 750 mm Lifting time 40 s Lowering time 40 s Noise level 70 dB A 1m Total weight of the lift 850 Kgp Working temperature 10 C 40 C Figure 4 LAYOUT ...

Страница 24: ...IP 54 Amperage 13 5 A a 230 V 7 8 A a 400 V Motor connection must be carried out referring to the attached wiring diagrams Ref Figure 7 The motor direction of rotation is shown in the label placed on the motor 5 3 Pump Type ad ingranaggi AP100 5 Displacement 5 cm3 g Continuous working pressure 210 bar 3000 psi Intermittent working pressure 230 bar 3300 psi Peak pressure 250 bar 3600 psi ...

Страница 25: ... 5 The hydraulic unit is equipped with a central block 1 five connections two for delivery 2 marked with H and K one for return 3 marked with F one for platform 1 levelling 4 signed with number 1 and one for platform 2 levelling 5 marked with number 2 Figure 5 HYDRAULIC GROUP ...

Страница 26: ...le is recommended Test standards Features Value ASTM D 1298 Density 20 C 0 8 Kg l ASTM D 445 Viscosity 40 C 32 cSt ASTM D 445 Viscosity 100 C 5 43 cSt ASTM D 2270 Viscosity index 104 N ASTM D 97 Pour point 30 C ASTM D 92 Flash point 215 C ASTM D 644 Neutralisation number 0 5 mg KOH g In case where the average ambient temperature differs from 25 C contact your local specialist oil supplier to find ...

Страница 27: ...oid valve SV4 Platform 2 levelling solenoid valve SV5 Fine level adjustment solenoid valve SV6 Fine level adjustment solenoid valve RD1 Lowering speed restrictor RD2 Lowering speed restrictor FR1 Fine level adjustment platform 1 FR2 Fine level adjustment platform 2 NR1 Non return valve NR1 Non return valve EM Electric motor P Pump F Filter S Tank VS Pressure relief valve Platform 1 Platform 2 ...

Страница 28: ...platform 2 levelling sensor d platform 1 levelling sensor S1 DOWN button S2 safety down button S3 UP button S4 emergency push button S5 limit switch override button S6 oil discharge button SV1 lowering solenoid valve SV2 lowering solenoid valve SV3 levelling solenoid valve SV4 levelling solenoid valve Beeper M Motor TR Transformer ...

Страница 29: ...HE MANUFACTURER IS NOT LIABLE FOR POSSIBLE DAMAGES TO PEOPLE VEHICLES OR OBJECTS RESULTING FROM AN IMPROPER OR UNAUTHORISED USE OF THE LIFT For operator and people safety the safety area shown in Figure 8must be vacated during lifting and lowering The lift must be operated only from the operator s control site as shown Operator s presence under the vehicle during working is only admitted when the ...

Страница 30: ...d without exceeding the maximum lifting capacity verify that no one is on the platforms during lifting or standing 6 2 Risks during vehicle lifting To avoid overloading and possible breaking the following safety devices have been used a maximum pressure valve placed inside the hydraulic unit to prevent excessive weight a special design of the hydraulic system in case of pipeline failure to prevent...

Страница 31: ... parts occurs Figure 10 BUMPING RISKS RISK OF THE VEHICLE FALLING FROM THE LIFT Ref Figure 11 Vehicle falling from the lift can be caused when the vehicle is improperly placed on platforms and when its dimensions are incompatible with the lift or by excessive movement of the vehicle In this case keep immediately away from the working area Figure 11 RISKS OF VEHICLE FALLING ...

Страница 32: ...and in particular next to the electric panel RISKS RESULTING FROM IMPROPER LIGHTING Make sure all areas next to the lift are well and uniformly lit according to local regulations RISKS OF BREAKING COMPONENT DURING OPERATION Ref Figure 13 Materials and procedures suitable for the designed parameters of the lift have been used by the manufacturer to build a safe and reliable product Operate the lift...

Страница 33: ...uthorised persons next to the lift and on the platforms is strictly forbidden during lifting as well as when the vehicle has been already lifted Figure 14 RISKS FOR UNAUTHORISED USES ANY USE OF THE LIFT OTHER THAN THAT HEREIN SPECIFIED CAN CAUSE SERIOUS ACCIDENTS TO PEOPLE IN CLOSE PROXIMITY OF THE MACHINE ...

Страница 34: ...TWIN F 3 0 A TWIN F 3 0 U D1 5002BA1 GB01 24 ...

Страница 35: ...ns CHECKING FOR ROOM SUITABILITY The lift has been designed to be used in covered and sheltered places The place of installation must not be next to washing areas painting workbenches solvent or varnish deposits the installation near to rooms where a dangerous situation of explosion can occur is strictly forbidden The relevant standards of the local Health and Safety at Work regulations for instan...

Страница 36: ...eans with load capacity of 500 kg at least To prevent the platform from dropping during transport it should be lifted according to its centre of gravity Always raise platforms by holding them on the underside of the base frames Position the base frames on the foundation according to the drive on direction of the lift Align platforms parallel to each other and in the drive on direction of the lift ...

Страница 37: ...TWIN F 3 0 A TWIN F 3 0 U D1 5002BA1 GB01 27 Figure 16 HYDRAULIC PIPES CONNECTION Platform 1 Platform 2 ...

Страница 38: ...black wire FC auto levelling 11 blak wire FCS auto levelling 9 blue wire FC auto levelling 12 blue wire FC auto levelling 7 5 Starting Be sure the working area is free from people and objects Be sure the electrical system feeding voltage is equal to that of the control box supplied with the lift 230 V or 400 V Verify that the control desk is powered Pour oil in the tank about 15 litres Supply powe...

Страница 39: ...RGE Press the SAFETY down button 7 Ref Figure 3 If the runways are not levelled restart bleeding operations as described previously 7 6 Checks and inspections 7 6 1 Mechanical checks grease sliding seats of blocks placed under platforms and on bases platform levelling and alignment as per measurement showed on Figure 18 lift fixing to the ground with 8 anchor bolts Ref Figure 18 min recommended si...

Страница 40: ...ction with the vehicle loaded 7 7 3 Bolts and nuts check After carrying out the checks with load make a visual inspection of the machine and check bolts and nuts for proper tightening 7 8 Limit switches adjustments ONLY SKILLED PERSONNEL MUST BE ALLOWED TO CARRY OUT THIS OPERATION AN IMPROPER ADJUSTMENT OF LIMIT SWITCHES COULD CAUSE DAMAGES TO THE LIFT OBJECTS AND PEOPLE Limit switches are adjuste...

Страница 41: ...MIT SWITCH 7 8 2 Adjustment of safety height limit switches Ref Figure 20 Be sure that when the lift is raised at about 1 meter the cylinder head is detected by the safety height limit switch and is placed at a distance between 1 and 3 mm from it Figure 20 ADJUSTMENT OF SAFETY HEIGH LIMIT SWITCH ...

Страница 42: ...ent of autolevelling limit switch Ref Figure 21 The auto levelling system s limit switches are adjusted in factory and for their specific assembly with the spring they don t need others adjustments Figure 21 ADJUSTMENT OF PLATFORM AUTOLEVELLING LIMIT SWITCHES ...

Страница 43: ... the lift can be raised slowly If it is pressed at the same time as the UP button 5 when the lift stops at the maximum height discharge solenoid valves are opened together with levelling solenoid valves in order to carry out cylinders bleeding If it is pressed and immediately released at the same time as DOWN button 6 oil in excess can be removed from secondary cylinders WARNING CARRY OUT EXCESS O...

Страница 44: ... THERE IS A BIGGER QUANTITY OF OIL IN THE HYDRAULIC CIRCUIT A CAUSE OF SOME HYDRAULIC NEEDS DURING THE LIFTING IN ORDER TO MAKE THIS MANOEUVRE WILL BE NECESSARY TO PUSH AND TO RELEASE IMMEDIATELY THE DOWN BUTTON 6 AND AT THE SAFETY DOWN BUTTON 13 8 6 Manual and emergency lowering Ref Figure 22 If there is no power or the control box is damaged lower the lift manually to its initial position as fol...

Страница 45: ...TWIN F 3 0 A TWIN F 3 0 U D1 5002BA1 GB01 35 ...

Страница 46: ...TWIN F 3 0 A TWIN F 3 0 U D1 5002BA1 GB01 36 ...

Страница 47: ...THE KEY IN A SAFE PLACE TO PREVENT UNAUTHORISED PERSONS FROM SWITCHING ON OR OPERATING THE LIFT 9 1 Ordinary maintenance The lift has to be properly cleaned at least once a month Use self cleaning clothes THE USE OF WATER OR INFLAMMABLE LIQUID IS STRICTLY FORBIDDEN Be sure the rod of the hydraulic cylinders is always clean and not damaged since this may result in leakage from seals and as a conseq...

Страница 48: ... by skilled electricians 9 3 Recommended hydraulic oil Recommended hydraulic oil for the lift to be used at standard temperatures 25 C 30 C is described below For temperatures different from those standard contact your dealer for suitable oil TRADEMARK TYPE AGIP OSO 32 API CIS 32 BP HLP 32 CASTROL HYSPIN HWS 32 ELF ELFONA DS 32 ESSO NUTO H 32 FIAT HTF 32 FINA HYDRAN TS 32 IP HYDRUS 32 Q8 HAYDRIN 3...

Страница 49: ...um height limit switch sensor is faulty The lowering valve does not close The suction pump filter is dirty Interchange the two phases on the main switch Add some hydraulic oil Replace the printed circuit board Check UP button and connection for proper operation Replace if needed Check the max height and relevant connection for proper operation Replace if needed Check and clean if dirty or replace ...

Страница 50: ...fy if it is powered and check magneto for damage replace if disconnected or blown Platforms do not stop in standing position The lowering and locking solenoid valves stay opened Leakage in at least two hydraulic pipelines Two hydraulic cylinders at least are faulty Verify that solenoid valve sliders are not blocked Check connections for proper tightening and tubes for damage replace if damaged Che...

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