MAHA Twin Series Operation Manual
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MAHA Twin Series Operation Manual

MAHA Twin Series Operation Manual

For vehicles up to 3,000 kg gross weight
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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
D1 5002BA1-GB01

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Summary of Contents for MAHA Twin Series

  • Page 1 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 D1 5002BA1-GB01...
  • Page 2 The contents of this edition have been checked with great care. However, errors cannot be fully excluded. Please contact MAHA should you find errors of any kind. These instructions are intended for users with previous knowledge in the field of automotive vehicle service lifts.
  • Page 3 However, nothing contained herein modifies or alters, in any way, the 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.
  • Page 4 TWIN F 3.0 A / TWIN F 3.0 U D1 5002BA1-GB01...
  • Page 5 TWIN F 3.0 A / TWIN F 3.0 U PRINTING CHARACTERS AND SYMBOLS Throughout this manual, the following symbols and printing characters are used to facilitate reading: Indicates 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 Important information BOLD TYPE...
  • Page 6 TWIN F 3.0 A / TWIN F 3.0 U D1 5002BA1-GB01...

  • Page 7: Table Of Contents

    TWIN F 3.0 A / TWIN F 3.0 U CONTENTS CHAPTER 1 – GENERAL INFORMATION CHAPTER 2 – PRODUCT IDENTIFICATION CHAPTER 3 - PACKING, TRANSPORT AND STORAGE CHAPTER 4 - PRODUCT DESCRIPTION CHAPTER 5 - TECHNICAL SPECIFICATION CHAPTER 6 - SAFETY CHAPTER 7 - INSTALLATION CHAPTER 8 - OPERATION AND USE CHAPTER 9 - MAINTENANCE...
  • Page 8 TWIN F 3.0 A / TWIN F 3.0 U D1 5002BA1-GB01...
  • Page 9 TWIN F 3.0 A / TWIN F 3.0 U INDEX OF FIGURES Figure 1 – PACKAGE AND HANDLING................ 6 Figure 2 - LIFT ....................... 9 Figure 3 – CONTROL DESK ..................11 Figure 4 – LAYOUT ..................... 13 Figure 5 – HYDRAULIC GROUP................. 15 Figure 6 –...
  • Page 10 TWIN F 3.0 A / TWIN F 3.0 U VIII D1 5002BA1-GB01...

  • Page 11: Chapter 1 - General Information

    TWIN F 3.0 A / TWIN F 3.0 U 1 CHAPTER 1 – GENERAL INFORMATION This chapter contains warning instructions to operate the lift properly and prevent injury to operators or objects. HIS MANUAL HAS BEEN WRITTEN TO BE USED BY SHOP TECHNICIANS IN CHARGE OF THE LIFT OPERATOR AND ROUTINE MAINTENANCE TECHNICIAN MAINTENANCE OPERATOR...
  • Page 12 TWIN F 3.0 A / TWIN F 3.0 U Obligation in case of malfunction N CASE OF MACHINE MALFUNCTION FOLLOW THE INSTRUCTIONS CONTAINED IN THE FOLLOWING CHAPTERS 1.3 Cautions for the safety of the operator Operators must not be under the influence of sedatives, drugs or alcohol when operating the machine.

  • Page 13: Chapter 2 - Product Identification

    TWIN F 3.0 A / TWIN F 3.0 U 2 CHAPTER 2 – PRODUCT IDENTIFICATION The identification data of the machine are shown in the label placed on the frame and indicated in the declaration of conformity. TYPE CAPACITY SERIAL NUMBER YEAR SE THE ABOVE DATA BOTH TO ORDER SPARE PARTS AND WHEN GETTING IN ).
  • Page 14 TWIN F 3.0 A / TWIN F 3.0 U D1 5002BA1-GB01...

  • Page 15: Chapter 3 - Packing, Transport And Storage

    TWIN F 3.0 A / TWIN F 3.0 U 3 CHAPTER 3 - PACKING, TRANSPORT AND STORAGE NLY SKILLED PERSONNEL WHO ARE FAMILIAR WITH THE LIFT AND THIS MANUAL SHALL BE ALLOWED TO CARRY OUT PACKING LIFTING HANDLING TRANSPORT AND UNPACKING OPERATIONS 3.1 Packing The lift is supplied disassembled into sub-assemblies depending on the model ordered.

  • Page 16: Figure 1 - Package And Handling

    TWIN F 3.0 A / TWIN F 3.0 U 3.2 Lifting and handling When loading/unloading or transporting the equipment to the site, be sure to use suitable loading (e.g. cranes, trucks) and hoisting means. Be sure also to hoist and transport the components securely so that they cannot drop, taking into consideration the package’s size, weight and centre of gravity and it’s fragile parts.

  • Page 17: Chapter 4 - Product Description

    TWIN F 3.0 A / TWIN F 3.0 U 4 CHAPTER 4 - PRODUCT DESCRIPTION 4.1 LIFT (Ref. Figure 2) All models have been designed to lift motor-vehicles and make them stand at any level between the minimum and maximum height. The maximum lifting weight, including any additional load on the vehicle, is 3000 kg (29400N).
  • Page 18 TWIN F 3.0 A / TWIN F 3.0 U As shown in figure 2, the lifts are composed of two platforms, the platform 1 (1) and the platform 2 (2) anchored to the ground by means of two base frames (3). The lift is equipped with drive-up (4) and drive-down (5) ramps, placed at both ends, for easy access of the vehicle which is lifted by placing the vehicle frame on four rubber pads (6).

  • Page 19: Figure 2 - Lift

    TWIN F 3.0 A / TWIN F 3.0 U Figure 2 - LIFT D1 5002BA1-GB01...
  • Page 20 TWIN F 3.0 A / TWIN F 3.0 U 4.2 CONTROL DESK (Ref. Figure 3) The Control desk is composed of a frame (1) covered with panels (2) and a top panel (3). The control panel is placed on the front of the top panel and is equipped with: UP button (5) DOWN button (6) SAFETY BUTTON for lowering last 400mm (7)

  • Page 21: Figure 3 - Control Desk

    TWIN F 3.0 A / TWIN F 3.0 U Figure 3 – CONTROL DESK D1 5002BA1-GB01...
  • Page 22 TWIN F 3.0 A / TWIN F 3.0 U 4.3 OPERATION Platform lifting is carried out by the hydraulic unit which acts upon the primary cylinders. The platforms are raised simultaneously owing crossfeeding of the hydraulic cylinders (Figure 6). Lowering, even though electrically controlled, is carried out by the weight of both the platforms and the load lifted.

  • Page 23: Chapter 5 - Technical Specification

    TWIN F 3.0 A / TWIN F 3.0 U 5 CHAPTER 5 - TECHNICAL SPECIFICATION 5.1 Size and main features (Ref. Figure 4) Capacity 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...
  • Page 24 TWIN F 3.0 A / TWIN F 3.0 U 5.2 Electric motor Type 90LA/4 Power 3 KW Voltage 230 V / 400V Frequency 50 Hz N° Poles Speed 1400 rpm Motor enclosure type Insulation class 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.

  • Page 25: Figure 5 - Hydraulic Group

    TWIN F 3.0 A / TWIN F 3.0 U 5.4 Hydraulic unit (Ref. Figure 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.
  • Page 26 TWIN F 3.0 A / TWIN F 3.0 U 5.5 Oil Use wearproof oil for hydraulic drive, in conformity with ISO 6743/4 rules (HM class). Fina HYDRAN TS 32 or equivalent oil with features similar to those shown in the table is recommended: Test standards Features...

  • Page 27: Figure 6 - Hydraulic Plan

    TWIN F 3.0 A / TWIN F 3.0 U Figure 6 – HYDRAULIC PLAN Primary piston Secondary piston Lowering solenoid valve Lowering solenoid valve Platform 1 levelling solenoid valve Platform 2 levelling solenoid valve Fine level adjustment solenoid valve Fine level adjustment solenoid valve Lowering speed restrictor Lowering speed restrictor Fine level adjustment platform 1...

  • Page 28: Figure 7 - Wiring Diagram

    TWIN F 3.0 A / TWIN F 3.0 U Figure 7 – WIRING DIAGRAM maximum height limit sensor safety height limit sensor platform 2 levelling sensor platform 1 levelling sensor DOWN button safety down button UP button emergency push button limit switch override button oil discharge button lowering solenoid valve...

  • Page 29: Chapter 6 - Safety

    TWIN F 3.0 A / TWIN F 3.0 U 6 CHAPTER 6 - SAFETY Read this chapter carefully and completely because it contains important information for the safety of the operator and the person in charge of maintenance. THE LIFT HAS BEEN DESIGNED AND BUILT FOR LIFTING VEHICLES AND MAKING THEM STAND ABOVE LEVEL IN A CLOSED AREA ANY OTHER USE IS FORBIDDEN INCLUDING THE FOLLOWING OPERATIONS...

  • Page 30: Figure 9 - Crushing Risks

    TWIN F 3.0 A / TWIN F 3.0 U 6.1 General warnings The operator and the person in charge of maintenance must follow accident-prevention laws and rules in force in the country where the lift is installed. They also must carry out the following: neither remove nor disconnect hydraulic, electric or other safety devices;...

  • Page 31: Figure 10 - Bumping Risks

    TWIN F 3.0 A / TWIN F 3.0 U BUMPING RISKS (Ref. Figure 10) When the lift is stopped at relatively low height for working, the risk of bumping against projecting parts occurs Figure 10 – BUMPING RISKS RISK OF THE VEHICLE FALLING FROM THE LIFT (Ref.

  • Page 32: Figure 12 - Slipping Risk

    TWIN F 3.0 A / TWIN F 3.0 U SLIPPING RISKS (Ref. Figure 12) The risk of slipping can be caused by oil or dirt on the floor near the lift Figure 12 - SLIPPING RISK KEEP THE AREA UNDER AND AROUND THE LIFT CLEAN EMOVE ALL OIL SPILLS ELECTROCUTION RISKS...

  • Page 33: Figure 14 - Risks For Unauthorised Uses

    TWIN F 3.0 A / TWIN F 3.0 U RISKS FOR UNAUTHORISED USES (Ref. Figure 14) The presence of unauthorised 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...
  • Page 34 TWIN F 3.0 A / TWIN F 3.0 U D1 5002BA1-GB01...

  • Page 35: Chapter 7 - Installation

    TWIN F 3.0 A / TWIN F 3.0 U 7 CHAPTER 7 - INSTALLATION ONLY SKILLED TECHNICIAN APPOINTED BY THE MANUFACTURER OR BY AUTHORISED DEALERS MUST ALLOWED CARRY THESE OPERATIONS SERIOUS DAMAGE TO PEOPLE AND THE LIFT CAN BE CAUSED IF THEY ARE MADE BY OTHER PERSONS BEFORE CARRYING OUT ANY OPERATIONS REMEMBER TO INSERT THE SAFETY...
  • Page 36 TWIN F 3.0 A / TWIN F 3.0 U INSTALLATION SURFACE OR HOLE The lift must be placed on level floor and sufficiently resistant. The surface and foundation must be suitable for bearing maximum stress values, also in unfavourable working conditions. If in-ground/recessed installation is made (PSB 3IG model only), the finished size of the hole must be verified (as per drawing sent at the time of order).

  • Page 37: Figure 16 - Hydraulic Pipes Connection

    TWIN F 3.0 A / TWIN F 3.0 U Figure 16 - HYDRAULIC PIPES CONNECTION Platform 1 Platform 2 D1 5002BA1-GB01...

  • Page 38: Figure 17 - Electrical System Connection

    TWIN F 3.0 A / TWIN F 3.0 U 7.4 Electrical system connection (Ref. Figure 17) Connect magnetic proximity pickups of both the platforms to the control desk following the numbering indicated on the cables. Connect the external power supply to the positions indicated in Figure 7 Ensure that the lift is suitably grounded Figure 17 - ELECTRICAL SYSTEM CONNECTION 1=brown wire FC safety height...

  • Page 39: Figure 18 - Fixing On The Ground

    TWIN F 3.0 A / TWIN F 3.0 U Press DOWN button (6) until the lift stops automatically (Figure 3); IF LOWERING IS NOT CARRIED OUT BY THE LIFT OR THE LIFT IS BLOCKED BEFORE THE DETECTION BY THE SAFETY HEIGHT LIMIT SWITCH OIL IN EXCESS FROM SECONDARY CYLINDERS MUST BE REMOVED If the lift does not low, push at the sametime with the down button (6) the oil discharge...
  • Page 40 TWIN F 3.0 A / TWIN F 3.0 U 7.6.3 Hydraulic system check proper oil level in the tank no leakage and blow-by cylinder operation 7.7 Set up and adjustments 7.7.1 Loadless check Carry out two or three complete cycles of lowering and lifting and check: the lift for reaching its maximum height the max height limit switch for proper operation the lowering limit switch for proper operation...

  • Page 41: Figure 19 - Adjustment Of Maximum Working Height Limit Switch

    TWIN F 3.0 A / TWIN F 3.0 U Figure 19 - ADJUSTMENT OF MAXIMUM WORKING HEIGHT LIMIT 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.

  • Page 42: Figure 21 - Adjustment Of Platform Autolevelling Limit Switches

    TWIN F 3.0 A / TWIN F 3.0 U 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 D1 5002BA1-GB01...

  • Page 43: Chapter 8 - Operation And Use

    TWIN F 3.0 A / TWIN F 3.0 U 8 CHAPTER 8 - OPERATION AND USE 8.1 Controls (Ref. Figure 3 Controls for operating the lift are: (11) GENERAL SWITCH 0 position: lift electric circuit is not powered; the switch can be padlocked to prevent the use of the lift.

  • Page 44: Figure 22 - Manual And Emergency Lowering

    TWIN F 3.0 A / TWIN F 3.0 U 8.3 Lifting Set the main switch (11) to 1 position and press UP button to lift the vehicle to the required level 8.4 Standing To let the lift stand, release the UP button when the required position is reached. The motion is stopped automatically.
  • Page 45 TWIN F 3.0 A / TWIN F 3.0 U D1 5002BA1-GB01...
  • Page 46 TWIN F 3.0 A / TWIN F 3.0 U D1 5002BA1-GB01...

  • Page 47: Chapter 9 - Maintenance

    TWIN F 3.0 A / TWIN F 3.0 U 9 CHAPTER 9 - MAINTENANCE NLY TRAINED PERSONNEL WHO KNOW HOW THE LIFT WORKS MUST BE ALLOWED TO SERVICE THE LIFT To service properly the lift, the following has to be carried out: use only genuine spare parts as well as equipment suitable for the work required follow the scheduled maintenance and check periods shown in the manual...
  • Page 48 TWIN F 3.0 A / TWIN F 3.0 U pumps Every 12 months General check: verify that components mechanisms are not damaged. Electrical system: - a check of the electrical system to verify that control desk motor, limit switches and control panel operate properly must be carried out by skilled electricians.

  • Page 49: Chapter 10 - Troubleshooting

    TWIN F 3.0 A / TWIN F 3.0 U 10 CHAPTER 10 - TROUBLESHOOTING A list of possible troubles and solutions is given below: Trouble Possible Cause Solution The lift does not work The main switch is not turned Turn the switch on There is no power Check Power on to restore if necessary...
  • Page 50 TWIN F 3.0 A / TWIN F 3.0 U The lift does not lower when Locking solenoid valve Verify if it is powered and check the DOWN button is pressed jammed. magneto for damage (replace if disconnected or blown). Replace the DOWN button The DOWN button is faulty Replace printed...

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Twin f 3.0 aTwin f 3.0 u

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