MAHA DUO-GN Technical Handbook
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MAHA DUO-GN Technical Handbook

MAHA DUO-GN Technical Handbook

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Scissors Lift
DUO-GN
for vehicles up to 4,200 kg gross weight
Technical Handbook
D1 0811TH1-GB06

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Summary of Contents for MAHA DUO-GN

  • Page 1 Scissors Lift DUO-GN for vehicles up to 4,200 kg gross weight Technical Handbook D1 0811TH1-GB06...
  • Page 2 All rights reserved in cases of patent granting or registration of design. 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. Subject to technical change without notice.

  • Page 3: Table Of Contents

    DUO-GN ONTENTS General Information ....................1 Standard Delivery...........................1 Options and Accessories .......................1 Specifications ..........................2 Noise Emission ..........................3 Installation ............................3 1.5.1 Location ..........................3 1.5.2 Foundation........................4 1.5.3 Power and Air Supply .....................4 1.5.4 Anchoring of Lift / Floor Cover ..................5 Recommended Positioning ......................8 Installation .........................9...
  • Page 4 DUO-GN Lift with Pneumatic Floor Cover ....................48 3.3.1 Floor Cover for Center Aisle ..................48 3.3.2 Floor Cover for Axle Jack .....................49 3.3.3 Installation of Floor Cover.....................50 Controller Board A1........................52 3.4.1 Switch-on Check......................52 3.4.2 Inputs X1A1 ........................53 3.4.3 Power Supply X2A1......................56 3.4.4...

  • Page 5: General Information

    DUO-GN General Information General Information Standard Delivery Scissors lift, model DUO-GN Control desk including power unit Cable covers Two approach ramps (for surface mounted version) or four flaps (for flush mounted version) Operating manual Options and Accessories Accelerated raising/lowering cycles Automatic runway synchronization Strip foundation floor cover (for defined axle jack position, incl.

  • Page 6: Specifications

    38 l approx. 38 l Petroleum-based fluid HLPD 32 min. HLPD 32 min. HLPD 32 min. specification Biodegradable fluid MAHA HLP 32 MAHA HLP 32 MAHA HLP 32 specification Working pressure max. 260 bar 260 bar 260 bar Pump capacity 3.1 cm...

  • Page 7: Noise Emission

    DUO-GN General Information General view of DUO-GN with wheel-free jack Noise Emission The sound pressure level is below 70 dB (A). Installation Lift installation and commissioning by authorized service personnel only. Provision of handling means such as forklifts etc. is the owner's responsibility.

  • Page 8: Foundation

    General Information DUO-GN 1.5.2 Foundation Prior to installation a sufficiently stable foundation and level lift bay floor shall be completed in accordance with manufacturer recommendations. Lift Version Minimum Concrete Thickness DUO-GN 140 mm (reinforced) Always use the current foundation plans.

  • Page 9: Anchoring Of Lift / Floor Cover

    DUO-GN General Information 1.5.4 Anchoring of Lift / Floor Cover If other anchors than those listed below are used, the anchor manufacturer must be contacted and asked for approval. Read the anchor manufacturer's installation instructions. 1.5.4.1 Lift Anchoring Twelve heavy-duty anchors manufactured by MKT, Fischer or UPAT are used for anchoring the lift.
  • Page 10 General Information DUO-GN 1.5.4.3 Anchor Specifications Base material Embedment depth Mark (minimum embedment depth) Drill bit nominal diameter Hole depth Installation torque inst Minimum base material thickness Fixture thickness (including floor tiles) Manufacturer Fischer UPAT Anchor model SZ-B SZ-B PS-B...
  • Page 11 DUO-GN General Information 1.5.4.4 Anchor Installation Drill a hole into the base material as per anchor manufacturer's recommendations. Blow the hole clean of dust and other material. Drive the anchor through the fixture into the anchor hole. Tighten the nut using a checked torque wrench.

  • Page 12: Recommended Positioning

    General Information DUO-GN Recommended Positioning Drawing shows surface mounted version of DUO-GN. Foundation plans for flush mounted version are available through MAHA. Hose Cover, Recessed Control Desk Hose Cover, Standard Recommended clearance: ► 1 m minimum to nearest lateral obstruction.

  • Page 13: Installation

    DUO-GN Installation Installation Positioning See also sections "Specifications" and "Recommended Positioning". At the installation site remove all packaging material. Determine runway separation X and position the runways using a leveling board. Provisional Connection of Hydraulic System Attach labeled hoses to corresponding connections of power unit.

  • Page 14: Hydraulic Fluid

    The bottom-level mark is indicated by the lower inspection window (1.2). Petroleum-based fluid should meet HLPD 32 specifications. MAHA part # VM 999005. Biodegradable fluid: Only use MAHA HLP 32. MAHA part # VM 999014. Power Supply Remove the mains fuse before connecting the power cable.

  • Page 15: Initial Raising Cycle

    DUO-GN Installation Wire / Designation attach to Terminal Terminal Strip X1 Terminal Strip X1 Power Supply Cable Terminal Strip X1 Terminal Strip X1 Terminal Strip X1 After connecting wires L1, L2 and L3 place back the terminal covers. 2.3.1 Initial Raising Cycle Before completing the installation perform an initial raising cycle.

  • Page 16: Connection Of Electric System

    Installation DUO-GN Connection of Electric System Use the wiring diagrams supplied with the lift. 2.4.1 Potential Equalization Run a potential equalization cable (yellow/green, wire size 4 mm²) from base plates and floor cover to the control desk. Attach the wires to the four grounding bolts inside the control desk.

  • Page 17: Final Connection Of Hydraulic And Pneumatic Systems

    The hydraulic connections for lift and accessory equipment are located at the backside of the valve blocks. They are labeled with letters. Application Power Unit Lift Connector Connector DUO-GN (and DUO 3.5) DUO-GN (and DUO 3.5) Y14.1 Y15.1 Wheel-free jack Wheel-free jack Wheel-free jack...

  • Page 18: Installation Material

    Installation DUO-GN 2.5.1 Installation Material D1 0811TH1-GB06...
  • Page 19 Item Qty. Description Shim, 250 mm lg. Shim, 150 mm lg. Hydraulic Connection DUO-GN 2.5 kW and 5 kW Locking Latch Connection Wheel-Free Jack Connection PMS Connection Hydraulic Connection DUO-GN 2 x 5 kW Hose Cover (for Surface Mounted Lift)

  • Page 20: Power Unit 2.5 Kw And 5.5 Kw

    Installation DUO-GN 2.5.2 Power Unit 2.5 kW and 5.5 kW D1 0811TH1-GB06...
  • Page 21 DUO-GN Installation Item Qty. Description Part # Hose ∅ 8x1, 7000 mm lg. 28 7008 HP Hose 2SN NW8 M16x1.5 L 750 27 0821 075 HP Hose 2SN NW8 M16x1.5 L 1250 27 0821 125 HP Hose 2SN NW8 M16x1.5 L 2000...

  • Page 22: Power Unit 2 X 5.5 Kw

    Installation DUO-GN 2.5.3 Power Unit 2 x 5.5 kW D1 0811TH1-GB06...
  • Page 23 DUO-GN Installation Item Qty. Description Part # Hose ∅ 8x1, 7000 mm lg. 28 7008 HP Hose 2SN NW10 M18x1.5 L 750 27 1021 075 HP Hose 2SN NW10 M18x1.5 L 1250 27 1021 125 HP Hose 2SN NW10 M18x1.5 L 2000...

  • Page 24: Wheel-Free Jack

    Installation DUO-GN 2.5.4 Wheel-Free Jack D1 0811TH1-GB06...
  • Page 25 DUO-GN Installation Item Qty. Description Part # HP Hose 2SN NW6 M14x1.5 L 750 27 0621 075 HP Hose 2SN NW6 M14x1.5 L 1700 27 0621 170 HP Hose 2SN NW6 M14x1.5 L 2000 27 0621 200 HP Hose 2SN NW6 M14x1.5 L 5000...

  • Page 26: Hydraulic Inclination

    Installation DUO-GN 2.5.5 Hydraulic Inclination D1 0811TH1-GB06...
  • Page 27 DUO-GN Installation Item Qty. Description Part # Hydraulic Inclination HP Hose 2SN NW6 M14x1.5 L 750 27 0621 075 HP Hose 2SN NW6 M14x1.5 L 1700 27 0621 170 HP Hose 2SN NW6 M14x1.5 L 5000 27 0621 500 Screw Fitting EVL 8 L Vm.

  • Page 28: Locking Latch

    Installation DUO-GN 2.5.6 Locking Latch Item Qty. Description Part # ∅ 6x1, 5000 mm lg. Compressed-Air Hose 28 7006 Tee Fitting KQU 06-99 28 9031 Control Desk 2.5.7 Item Qty. Description Part # HP Hose 2SN NW6 M14x1.5 L 5000...

  • Page 29: Hose Cover (For Surface Mounted Lift)

    DUO-GN Installation 2.5.8 Hose Cover (for Surface Mounted Lift) Item Qty. Description Cable Channel Cable Channel, Recessed Control Desk D1 0811TH1-GB06...

  • Page 30: Bleeding The Hydraulic System

    Installation DUO-GN Bleeding the Hydraulic System At completion of hydraulic and pneumatic installation bleed the system and run the lift through a few raising and lowering cycles. See section 3.10. Adjustment and Anchoring of Base Plates Each base plate is provided with six (6) mounting brackets including adjusting screws.

  • Page 31: Fastening Of Shims And Adjusting Screws

    DUO-GN Installation Shim, Long Adjusting screw with Lock Nut Heavy-Duty Anchor Supporting Bolt with Lock Nut Do not use the supporting bolts (item 4) for base plate adjustment. At completion of adjustment tighten the supporting bolts and the lock nuts.

  • Page 32: Adjustment Of Base Plates For Standard Lifts

    Installation DUO-GN 2.7.2 Adjustment of Base Plates for Standard Lifts 2.7.2.1 Fully Lowered Position Fully lower the lift. Check dimension X, adjust as required. Check runway position using a leveling board, adjust as required. Level the runways using the adjusting screws.
  • Page 33 DUO-GN Installation 2.7.2.3 Anchoring At completion of base plate adjustment tighten the lock nuts. Drill holes using a Ø 15 mm drill bit and blow them clean of dust. Drive anchors into holes and tighten them using a torque wrench.

  • Page 34: Adjustment Of Wheel Alignment Lifts

    Installation DUO-GN 2.7.3 Adjustment of Wheel Alignment Lifts Wheel alignment lifts are measured, leveled and adjusted during final assembly at the factory. To obtain the required accuracy of measurement, the lifts must be set up identically at their installation site.
  • Page 35 DUO-GN Installation 2.7.3.2 Fully Raised Position Fully raise the lift and set it on the topmost lock. Check dimension X, adjust as required using the adjusting screws. After each adjustment in fully raised position, recheck the base plates in fully lowered position and readjust if necessary.

  • Page 36: Leveling Of Wheel Alignment Lifts

    Installation DUO-GN Leveling of Wheel Alignment Lifts Before leveling the lift load the runways with a typical vehicle. Spot vehicle rear wheels on slip plates, and front wheels on swivel plates. The lift must be leveled in fully raised as well as in fully lowered position.

  • Page 37: Leveling In Fully Raised Position

    DUO-GN Installation 2.8.1 Leveling in Fully Raised Position The accuracy requirements are met within six serration teeth around the serration in which the runways were leveled. Flush Mounted Lift Fully raise the lift and set it on the topmost lock. The latch teeth automatically engage the serrations.
  • Page 38 Diagonally 1.0 mm 1.0 mm 1.0 mm MAHA wheel alignment lifts are measured, leveled and adjusted during final assembly. Provided the lift has been installed correctly, readjustment of bearings is not normally required. 2.8.1.1 Adjustment of Thrust Bearings Location of the four thrust bearings.
  • Page 39 DUO-GN Installation Open the hex head cap screws (item 2) 1/2 turn each. Use the adjusting screws (item 1) to adjust the bearing (same number of turns for each screw). Once the readings are within the tolerance range, check the runway position using a leveling board and adjust as required.

  • Page 40: Leveling In Fully Lowered Position

    Installation DUO-GN 2.8.2 Leveling in Fully Lowered Position Fully lower the lift. Measure the eight measuring points using the leveling instrument. Use the eight adjusting screws in the base plate corners to adjust the run- ways. See section 2.10.3.2. At completion of lift leveling check all adjusting screws and anchors for tightness. Seal the adjusting screws using screw locking varnish.

  • Page 41: Cross Connection Of Runways

    DUO-GN Installation Cross Connection of Runways Lifts with axle play detector are equipped with a cross member for increased stability. for Surface Mounted Lift for Flush Mounted Lift D1 0811TH1-GB06...
  • Page 42 Installation DUO-GN Make sure the supports of the cross member are on the upper side. NOTE: Maximum permissible variation between dimension X in fully lowered position and dimension X in fully raised position is 2 mm D1 0811TH1-GB06...

  • Page 43: Adjustment Of Automatic Runway Synchronization

    DUO-GN Installation 2.10 Adjustment of Automatic Runway Synchronization Bleeding of hydraulic system is necessary to ensure proper functioning of the automatic runway synchronization and the lift control. At initial installation repeat the bleeding procedure three times at least. 2.10.1 Bleeding of Hydraulic System Do not bleed the system while the lift is loaded! Disengage the cross member before bleeding the system.
  • Page 44 Installation DUO-GN Simultaneously press and hold the override button, the equalizing button and the LOWER button until the slave cylinder runway is approx. 10 cm above the floor. If the override button is not actuated, the synchronization check will respond. The lift movement stops and the ERROR signal lamp flashes.

  • Page 45: Adjusting The Proximity Switches On The Latches

    DUO-GN Installation The bleeder screw of the slave cylinder is located at the valve block. It can be reached through a slot in the runway. After bleeding the system simultaneously press and hold override button, equalizing button and RAISE button until both runways have the same height.
  • Page 46 Installation DUO-GN 2.10.3.2 Adjusting Proximity Switches B13 and B14 Clearance x Standard Lift 4 mm 4 mm Wheel Alignment Lift 1 mm 4 mm Proximity switches B13 and B14 are located at the approach side (A) of the base plates.

  • Page 47: Checking And Adjusting The Longitudinal Light Barriers

    DUO-GN Installation 2.11 Checking and Adjusting the Longitudinal Light Barriers 2.11.1 Operational Check At completion of installation check the longitudinal light barriers for proper response: 1 Position the lift at a height of approx. 10 cm. 2 Hold one hand between light barrier transmitter and receiver on the edge of the runway.
  • Page 48 Installation DUO-GN D1 0811TH1-GB06...

  • Page 49: Supplementary Information

    DUO-GN Supplementary Information Supplementary Information Proximity Switches 3.1.1 Proximity Switches in the Base Plate Switch used for: 1 (B15) – Automatic synchronization – Second lowering speed – Strip foundation – Axle jack position – Lowerable prism wedge (PMS) 2 (B17) –...

  • Page 50: Transporting The Lift

    Supplementary Information DUO-GN Transporting the Lift 3.2.1 Transport Protection When lifting the scissors by the base plate, use the transport protection to avoid equipment damage. Two blocks of wood are required for each pair of scissors. Dimensions: Lift without wheel-free jack...

  • Page 51: Transport With Hoisting Chains

    DUO-GN Supplementary Information 3.2.2 Transport with Hoisting Chains When using a crane or similar hoisting device, fasten four cable loops to the mounting brackets of the base plate. Then hook in the hoisting chains. The minimum length of each hoisting chain is 1500 mm.

  • Page 52: Lift With Pneumatic Floor Cover

    Supplementary Information DUO-GN Lift with Pneumatic Floor Cover 3.3.1 Floor Cover for Center Aisle Base Frame Air Bellows Cover, Bottom 11 Cover Plate Air Bellows 12 Binding Head Screw M6x10 Air Bellows Cover, Top 13 Guide Allen Screw M8x16 14...

  • Page 53: Floor Cover For Axle Jack

    DUO-GN Supplementary Information 3.3.2 Floor Cover for Axle Jack Base Frame Air Bellows 12 Cover Plate Air Bellows Cover, Top 13 Binding Head Screw M6x10 Allen Screw M8x16 14 Guide Support Bolt M10x29 15 Flat Head Screw M8x12 Hex Nut M10 16...

  • Page 54: Installation Of Floor Cover

    Supplementary Information DUO-GN 3.3.3 Installation of Floor Cover The floor covers are shipped ready-to-install and only need to be fastened and connected. Travel stop brackets should be anchored carefully to avoid jamming with base frame. Read anchor manufacturer's installation instructions.
  • Page 55 DUO-GN Supplementary Information Illustration shows rapid release valve with clamp. 3.3.3.1 Sectional View of Lift with Floor Cover Base Frame Travel Stop Adjusting screw Hex Head Cap Bolt Stop (welded to base frame, contacts bolt (9) once floor cover reaches top position)

  • Page 56: Controller Board A1

    Supplementary Information DUO-GN 3.3.3.2 Installation of UPAT EXA 10/15 Anchors Using a 10 mm diameter bit, drill a hole into the base material. Minimum hole depth 85 mm. Blow hole clean of dust. Drive anchor through travel stop bracket into hole.

  • Page 57: Inputs X1A1

    DUO-GN Supplementary Information 3.4.2 Inputs X1A1 X1A1 PORT Funktion P0.0 Button Raise lift P0.1 Button Lower lift P0.2 Button Set on locks P0.3 Button Lift horizontal P0.4 Button Lift inclined P0.5 Button Raise wheel-free jack P0.6 Button Lower wheel-free jack Limit switch Master (right side) down? P0.7...
  • Page 58 Supplementary Information DUO-GN 3.4.2.1 Buttons X1A1 Button Function Light signal when Raise lift Button pressed Lower lift Button pressed Set on locks Button pressed Disable inclination Button pressed Enable inclination Button pressed Raise wheel-free jack Button pressed Lower wheel-free jack...
  • Page 59 DUO-GN Supplementary Information 3.4.2.4 Infrared/Light Barriers X1A1 LED VDN Light signal when Receiver right Beam unobstructed Receiver left Beam unobstructed Receiver transverse Beam unobstructed The light barriers are permanently active and self-monitoring. Operation of the self-monitoring system is indicated by a flashing light signal from light barrier transmitter, light barrier receiver and the respective LEDs (21/22/23 at VDN 3), and from the LED of output 29 at VDN 5 (light barrier clock pulse).

  • Page 60: Power Supply X2A1

    Supplementary Information DUO-GN 3.4.2.6 Optional Inputs The DUO-GN control has inputs which can be used for setting the following options: Input Option PMS with cable lamp at input 25 26 +24 V Button Mechanical inclination +24 V Button Mechanical inclination...

  • Page 61: Outputs X3A1

    DUO-GN Supplementary Information 3.4.4 Outputs X3A1 X3A1 Component/Contact Function Digital output K1/A2 Motor 1 +24 V K1/A1 Digital output Y4/1 and Y5/1 Lower lift +24 V Digital output Y9.1/2 and Y10/2 and Y11/2 Lower wheel-free jack +24 V Y9.1/1 and Y10/1 and Y11/1...

  • Page 62: Infrared Hand Lamp

    Supplementary Information DUO-GN Infrared Hand Lamp If an infrared hand lamp is used to control the PMS axle play detectors, the transmission link between infrared hand lamp and controller board A1 has to be activated. If several lifts equipped with infrared hand lamps are being operated in the same shop, each lift requires a transmission channel of its own.
  • Page 63 DUO-GN Supplementary Information Pin jumper J1 to position 1-2. Only switches 1 and 2 on DIP switch block S1 are available for channel setting, i.e. a maximum of four different channels can be set. DIP switch of controller board Channel of...

  • Page 64: Radio Hand Lamp

    Supplementary Information DUO-GN Radio Hand Lamp The buttons and switches of the radio hand lamp have the same functions as those of the infrared hand lamp. 13 devices can be coded with the radio system in comparison with the infrared system which allows only 4.

  • Page 65: Channel Setting

    DUO-GN Supplementary Information 3.6.2 Channel Setting Make sure that radio hand lamp and receiver of the same lift are set to the same transmission channel. Remove the plug from the hand lamp to make the coding switch accessible. The coding switch of the radio receiver is freely accessible.

  • Page 66: Transmission Channels

    Supplementary Information DUO-GN 3.6.3 Transmission Channels The radio system is operated on a license-free ISM channel. Coding Switch Transmission Radiofrequency Data Rate RF Transmission Position Channel in MHz in baud in ms 868.000 19200 869.850 19200 869.200 19200 868.300 19200 868.200...

  • Page 67: Cross Connection Of Runways

    DUO-GN Supplementary Information Cross Connection of Runways The runways can be optionally equipped with a cross member for increased stability. Once a certain level difference is exceeded, the cross member will automatically disengage to avoid damage to the lift. Periodically check the cross member for secure engagement in the holding brackets (see illustration below, position 1).

  • Page 68: Troubleshooting

    Supplementary Information DUO-GN Troubleshooting Trouble Cause Remedy Runway lighting does not burn. Fuse F2 blown. Replace fuse F2. POWER signal lamp does not burn. Lift does not respond. Main switch off. Turn on main switch. Mains fuse blown. Replace mains fuse.

  • Page 69: Pneumatic System

    DUO-GN Supplementary Information Pneumatic System 3.9.1 Double Latch Locking Latch Air Supply Axle Jack Item Qty. Description Part # Short-Stroke Cylinder (15 mm Stroke) 28 0040 Solenoid Valve 3/2 Port G1/4", 24 V 28 4150 Tee Fitting KQT 06-00 28 9035...

  • Page 70: Quadruple Latch

    Supplementary Information DUO-GN 3.9.2 Quadruple Latch Cylinder Double Latch Locking Latch Air Supply Axle Jack Item Qty. Description Part # Short-Stroke Cylinder (15 mm Stroke) 28 0040 Solenoid Valve 3/2 Port G1/4", 24 V 28 4150 3/2 Port Directional Control Valve with Solenoid...

  • Page 71: Pneumatic Floor Cover / Floor Cover For Axle Jack

    DUO-GN Supplementary Information 3.9.3 Pneumatic Floor Cover / Floor Cover for Axle Jack Pneumatic Floor Cover Floor Cover for Axle Jack Air Supply Air Supply Latch / Axle Jack Latch / Axle Jack Item Qty. Description Part # Fitting 1/4" x 60 mm...

  • Page 72: Pms 2/Xlp

    Supplementary Information DUO-GN 3.9.4 PMS 2/XLP Built-in Airbag Item Qty. Description Part # 3/2 Port Directional Control Valve with Solenoid 28 5000 Rapid Release Valve 3/8" 28 5802 Silencer R1/4" 165-0400 28 8165 0400 Straight Fitting KQH 08-02 S 28 9105...

  • Page 73: Bleeding

    DUO-GN Supplementary Information 3.10 Bleeding Do not bleed the system while the lift is loaded! Disengage the cross member before bleeding the system (see section "Cross Member"). The bleeding procedure explained below applies to lifts both with or without automatic runway synchronization.
  • Page 74 Supplementary Information DUO-GN Raise the latch (2) to make the bleeder screw (1) accessible. Open bleeder screw (1) of master cylinder approx. one turn using an Allen key. The runway slightly lowers. Close the screw once fluid streams without bubbles.

  • Page 75: Manual Lowering

    DUO-GN Supplementary Information 3.11 Manual Lowering 3.11.1 Preparations Authorized personnel only! Do not restart the lift before the error has been remedied! Lifts with floor cover for axle jack: Verify that axle jack is in defined home position. Lifts with floor cover: Lower the floor cover by mechanically actuating air valve Y12.

  • Page 76: Lift With Hand Pump

    Supplementary Information DUO-GN 3.11.2 Lift with Hand Pump Solenoid valve Y5 Solenoid valve Y4 (at slave cylinder) (at master cylinder) When opening solenoid valves Y5 and Y4, adhere strictly to the following sequence. Arrow: Bleeder screw at solenoid valve Y5.
  • Page 77 DUO-GN Supplementary Information Push the slider blocks (3) under the latches as shown. The slider blocks prevent the latches (3.1) from engaging the serrations. Open the setscrew (4) at the valve block of the power unit until the lift begins to lower slowly.

  • Page 78: Lift Without Hand Pump

    Supplementary Information DUO-GN 3.11.3 Lift without Hand Pump In some cases, lifts without hand pump cannot be lowered manually. Contact your MAHA service representative. Solenoid valve Y5 Solenoid valve Y4 (at slave cylinder) (at master cylinder) When opening solenoid valves Y5 and Y4, adhere strictly to the following sequence.

  • Page 79: Slider Blocks

    DUO-GN Supplementary Information Open the control desk cover to make the power unit accessible. Open the setscrew (3) at the valve block of the power unit until the lift begins to lower slowly. Once lift is in bottom position close the setscrew (3) finger tight.

  • Page 80: Compensation Rails For 280/330 Mm Foundation Depth

    Supplementary Information DUO-GN 3.12 Compensation Rails for 280/330 mm Foundation Depth Item Qty. Description Part # Compensation Rail, Short Compensation Rail, Long Heavy-Duty Anchor UPAT or Fischer 23 5050 Washer A17 DIN 125 22 0125 16 1 Hex Head Cap Screw M16x40-8.8 DIN EN 24017...

  • Page 81: Maintenance

    DUO-GN Supplementary Information 3.13 Maintenance Turn off and lock the main switch before servicing the lift. 3.13.1 Annual Inspection Have your lift inspected by authorized service personnel at least once annually. 3.13.2 Maintenance by the Operator Establish a periodic preventive maintenance procedure to ensure troublefree operation and long service life.
  • Page 82 Supplementary Information DUO-GN 3.13.2.1.1 Determining the Fluid Level Use the inspection windows to check the fluid level. Fluid level should be between top- and bottom-level marks. The power unit is located in the lower part of the control desk. Reservoir capacity is approx. 38 l.
  • Page 83 Supplementary Information 3.13.2.1.2 Refilling Open the filler screw and refill as required. Petroleum-based fluid should meet HLPD 32 specifications. MAHA part # VM 999005. Biodegradable fluid: Only use MAHA HLP 32. MAHA part # VM 999014. 3.13.2.2 Greasing Points D1 0811TH1-GB06...
  • Page 84 Supplementary Information DUO-GN 3.13.2.2.1 Cylinder Quarterly grease the cylinder and plunger hinges through lubricators 1.1 and 1.2. Remove waste grease. In the case of lifts equipped with double latch, also grease the hinges of the pneumatically actuated lowering device cylinders.
  • Page 85 DUO-GN Supplementary Information 3.13.2.3 Pneumatic Floor Cover 3.13.2.3.1 Greasing the Pneumatic Floor Cover The plastic guides of the limit stops should be cleaned and greased every three months. 3.13.2.3.2 Checking the Pneumatic Valves Once a year clean or replace the foam silencers at the rapid release valves and at the directional control valve (see below).
  • Page 86 Supplementary Information DUO-GN 3.13.2.4 Cleaning Do not use high pressure / steam jet cleaners or caustic cleaning agents. Risk of damage! Periodically wash off aggressive substances and treat the lift with oil or wax spray. Repair damage to the paintwork immediately to prevent corrosion. The RAL number is available through the manufacturer.
  • Page 87 DUO-GN Supplementary Information 3.13.2.5.2 Axle Play Detector PMS Before removing the test plates unpressurize the hydraulic system of the PMS. Every 200 operating hours grease through the lubricators of the PMS guides (see arrows). Remove waste grease. Unpressurizing the-Hydraulic System of the PMS Release solenoid valves Y14/Y14.1...
  • Page 88 Supplementary Information DUO-GN D1 0811TH1-GB06...

  • Page 89: Appendix

    DUO-GN Appendix Appendix Always use the latest hydraulic circuit diagrams available through MAHA. Hydraulic Circuit Diagrams D1 0811TH1-GB06...
  • Page 90 Appendix DUO-GN D1 0811TH1-GB06...
  • Page 91 DUO-GN Appendix D1 0811TH1-GB06...
  • Page 92 Appendix DUO-GN D1 0811TH1-GB06...
  • Page 93 DUO-GN Appendix D1 0811TH1-GB06...
  • Page 94 Appendix DUO-GN D1 0811TH1-GB06...
  • Page 95 DUO-GN Appendix D1 0811TH1-GB06...
  • Page 96 Appendix DUO-GN D1 0811TH1-GB06...

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