MAHA DUO CM 4.2 A Original Operating Instructions

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Original Operating Instructions

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DUO CM
Scissors Lift
Original Operating Instructions
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Contents
1
Safety .................................................................................................................. 5
1.1 Introduction .............................................................................................................. 5
1.2 Symbols ................................................................................................................... 5
1.3 Intended Use ........................................................................................................... 5
1.4 Inappropriate Use ..................................................................................................... 5
1.5 Requirements on Operating and Service Personnel .................................................. 5
1.6 Safety Instructions for Commissioning ...................................................................... 6
1.7 Safety Instructions for Operation............................................................................... 6
1.8 Safety Instructions for Servicing ................................................................................ 8
1.9 Safety Instructions for Handling Hydraulic Fluid ......................................................... 8
1.10 What to Do in the Event of Defects or Malfunctions .................................................. 9
1.11 What to Do in the Event of an Accident .................................................................... 9
1.12 Safety Features ........................................................................................................ 9
2
Description ........................................................................................................ 11
2.1 General Information ................................................................................................ 11
2.2 Specifications ......................................................................................................... 11
2.3 Sample Nameplate ................................................................................................. 13
3
Transport and Storage ....................................................................................... 14
4
Installation and Initial Operation ........................................................................... 14
5
Operation .......................................................................................................... 14
5.1 Main Switch ........................................................................................................... 14
5.2 Controls and Indicators .......................................................................................... 15
5.3 Display Codes ........................................................................................................ 16
5.4 Using Support Blocks ............................................................................................ 16
5.4.1 Stacking Two Blocks on Top of Each Other ........................................................... 19
5.5 Raising ................................................................................................................... 19
5.6 Lowering ................................................................................................................ 20
5.7 Wheel-Free Jack (Optional) ..................................................................................... 20
5.8 Hydraulic Inclination ............................................................................................... 21
5.9 Routing the Manual Lowering Rope on Lifts with Power Unit in Middle Platform ...... 22
5.9.1 Manual Lowering Rope with 5.5 kW Unit in Middle Platform ................................... 22
5.10 Manual Lowering of the Lift .................................................................................... 24
5.10.1 Important Notice Regarding Manual Lowering ........................................................ 24
5.10.2 Sequence of Actions for Manual Lowering .............................................................. 24
5.10.3 Identifying the Hydraulic Power Unit ....................................................................... 25
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5.10.4Manual Lowering with 2.5 kW or 5.5 kW Power Unit in the Control Desk ................ 26
5.10.5Manual Lowering with 2 × 5.5 kW Power Unit in the Control Desk .......................... 28
5.10.6Manual Lowering with 5.5 kW Power Unit in the Middle Platform ............................ 30
5.10.7Manual Lowering with 2 × 5.5 kW Power Unit in the Middle Platform ...................... 32
5.11Manual Lowering of the Wheel-Free Jack ............................................................... 34
5.11.1Manual Lowering of Wheel-Free Jack with 2.5 kW or 5.5 kW Power Unit ................ 34
5.11.2Manual Lowering of Wheel-Free Jack with 2 x 5.5 kW Power Unit in the Control
Desk ...................................................................................................................... 34
5.11.3Manual Lowering of Wheel-Free Jack with 2 x 5.5 kW Power Unit in the
Middle Platform ...................................................................................................... 36
6Maintenance ........................................................................................................ 38
6.1Maintenance Schedule ........................................................................................... 38
6.2Annual Inspection ................................................................................................... 38
6.3Replacing the Filter Element ................................................................................... 39
6.4Care Instructions .................................................................................................... 39
6.5Checking the Fluid Level ......................................................................................... 40
6.6Wearing Parts ........................................................................................................ 41
6.6.1Checking the Sliding Blocks in the Base Tub .......................................................... 41
6.7Greasing Points ...................................................................................................... 42
6.7.1Lubrication Points at the Lift ................................................................................... 42
6.7.2Lubrication Points at Optional Accessories ............................................................. 43
6.8Troubleshooting ..................................................................................................... 44
6.9Spare Parts ............................................................................................................ 44
7Service Lifetime .................................................................................................... 45
8Dismantling .......................................................................................................... 45
9Disposal ............................................................................................................... 45
10Contents of the Declaration of Conformity ............................................................. 45
11Company Information ........................................................................................... 46
4
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1
Safety
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1.1
Introduction
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Thoroughly read this manual before operating the equipment and comply with the
instructions. Always display the manual in a conspicuous location.
Personal injury and property damage incurred due to non-compliance with these
safety instructions are not covered by the product liability regulations.
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1.2
Symbols
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Important safety instructions. Failure to comply with instructions could result in
personal injury or property damage.
Important information.
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1.3
Intended Use
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This lift shall be used exclusively for the safe lifting of motor vehicles. Observe
the rated load capacity and load distribution.
The lift shall not be modified without the express written consent of the manu-
facturer. In case of non-compliance the declaration of conformity becomes
void.
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1.4
Inappropriate Use
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Any use other than described is inappropriate, for example:
Climbing on the lift supports
Transporting persons on the lift supports
Usage as mobile work platform or for other lifting operations
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1.5
Requirements on Operating and Service Personnel
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All persons employed in the operation, maintenance, installation, removal and dis-
posal of the device must
be mentally and physically suited for these activities,
be at least 18 years old,
be trained and instructed in writing,
6
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have read and understood the operating instructions, especially the instructions
what to do in the event of defects or malfunctions,
be on record as having been instructed in safety guidelines,
have practical experience in working with vehicle lifts and the hazards inherent
in such equipment.
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1.6
Safety Instructions for Commissioning
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The lift shall be installed and commissioned by authorised service personnel on-
ly.
Use personal protective equipment.
All safety features must be checked for proper function at commissioning.
The control desk (if present) shall not be installed in the danger zone of the lift.
The standard lift version shall not be installed and commissioned in hazardous
locations, outdoors, in moist rooms (e.g. car wash) or outside a temperature
range of 5…40 °C (41…104 °F).
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1.7
Safety Instructions for Operation
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Observe the detailed operating instructions.
Observe all accident prevention regulations.
Use personal protective equipment.
The standard lift version shall not be operated in hazardous locations, outdoors,
in moist rooms (e.g. car wash) or outside a temperature range of 5…40 °C
(41…104 °F).
To ensure safe operation, check the functionality of all safety devices before us-
ing the lift.
The control desk (if present) must be positioned in such a way that there is an
unobstructed view to the complete working area and the emergency stop can
be accessed at all times.
All structural parts of the equipment must be visually checked at regular inter-
vals.
Supply of suitable illuminating devices is the owner's/operator's responsibility.
Do not allow anyone to stay in the danger zone when driving on or off the lift.
Lifts with cylinder and runways: when lifting vehicles with a short wheelbase,
make sure that one axle is in front of the lifting cylinder, the other behind it.
Lifts with wheel-free jack: before driving on or off the lift or wheel-free jack,
make sure the jack is in bottom position.
If the operator is unable to see all parts of the danger zone, a trained second
person must monitor such areas.
Center the vehicle on the lift when it is in fully lowered position.
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After positioning the vehicle on the lift secure it against roll-off.
Lifts with runways: make sure the vehicle tyres do not contact the roll-off pro-
tection when raising or lowering the lift.
Lifts with runways: modifications (such as usage of extensions) are permissible
only under the condition that the functionality of the roll-off protection is main-
tained (protective position of 0.1 m above the runways).
The load rating on the identification plate must not be exceeded.
Keep the path of movement free of obstructions.
Only use the vehicle manufacturer's recommended lift points.
Only use lifting supports approved by the vehicle manufacturer.
The vehicle must be lifted as a whole. usage of external hoisting and support
devices in combination with the lift must be approved by the manufacturer.
Do not use the lift for transporting persons.
Lifts with support arms or wheel-free jack: when raising the lift, all support
points at the vehicle body must be engaged at the same time.
Lifts with support arms or swing arm jack: use one additional extender or one
support block only for each support point.
Lifts with support arms or swing arm jack: check arm restraints for secure en-
gagement as soon as support arms contact vehicle lift points.
Lifts with wheel-free jack: secure engagement of the vehicle must be ensured
by using appropriate means (e.g. lashing straps).
After raising the vehicle briefly, stop and check the lift supports for secure con-
tact.
Make sure the vehicle doors are closed during raising and lowering cycles.
Make sure the parking brake is applied during raising and lowering cycles.
Closely watch lift and vehicle during raising and lowering cycles.
Do not allow anyone to stay in lift area during raising and lowering cycles.
Lifts with support arms or wheel-free jack: after setting down the vehicle, check
the lift supports for secure contact before raising the vehicle again.
Axle lift (if present): observe the installation instructions. Use both hands when
moving the axle lift. The axle lift must be in park position during raising and low-
ering cycles.
Axle lift (if present): the vehicle must be additionally secured against rolling off
while one axle is in a raised position.
Do not allow anyone to climb up the lift or the raised vehicle.
Before leaving the lift, fully lower the vehicle or secure it against accidental low-
ering.
Keep lift and vehicle free of tools and parts.
Keep the lift and lift area clean. Risk of slippage on oily floors!
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The main switch serves as emergency stop switch. In case of emergency turn it
to "0".
Protect the lift against unauthorized usage by padlocking the main switch.
Protect all parts of the electrical equipment from humidity.
Use caution with operating vehicle engines. Danger of poisoning!
When removing heavy vehicle components, the centre of gravity can change. In
such circumstances appropriate action must be taken as required.
Residual risk: Tripping over runways of surface mounted lifts, tripping over
tools.
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1.8
Safety Instructions for Servicing
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Use personal protective equipment.
Service work must be done by authorized service technicians.
Turn off and padlock the main switch before doing any repair, maintenance or
setup work.
The system must be unpressurized during maintenance work.
Work on pulse generators or proximity switches must be done by authorized
service technicians.
Work on the electrical equipment must be done by service technicians or quali-
fied electricians.
Ensure that ecologically harmful substances are disposed of in accordance with
the appropriate regulations.
Do not use high pressure or steam jet cleaners. Do not use caustic cleaning
agents.
The lift's safety devices must be set by authorized service technicians.
Do not replace or override the safety devices.
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1.9
Safety Instructions for Handling Hydraulic Fluid
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Neutralize hydraulic fluid spills with binder.
Remove contaminated clothing immediately.
Inhalation: If symptoms persist, seek medical treatment.
Skin contact: Wash skin immediately with soap and water. If skin irritation per-
sists, seek immediate medical advice.
Eye contact: Rinse thoroughly with water and seek medical advice.
Ingestion: Do not induce vomiting. Seek immediate medical attention.
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1.10
What to Do in the Event of Defects or Malfunctions
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In case of defects or malfunctions such as uncontrolled lift movement or defor-
mation of the superstructure, support or lower the lift immediately.
Turn off the main switch and secure it against unauthorized usage. Contact
service.
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1.11
What to Do in the Event of an Accident
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The injured person is to be removed from the danger area. Find out where
dressing and bandages are kept. Seek first-aid.
Provide first-aid (stop bleeding, immobilise injured limbs), report the accident
and seal off the accident site.
Immediately report any accident to your supervisor. Make sure a record is kept
of every occasion first-aid is provided, e.g. in an accident book.
Remain calm and answer any questions that may arise.
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1.12
Safety Features
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Dead Man's Type Control
The operator is required to hold the control in the engaged position to initiate and
maintain a particular operation.
Roll-off Protection
Once the runways are raised, the approach ramps rise and act as chocks.
Longitudinal Light Barriers as Pinch Point Protection (Option)
The outside edges of the runways are equipped with light barriers. Once the light
beam is interrupted, the lift stops immediately.
After the error has been corrected, the hazard point is always enabled first by
raising the lift.
CE Stop
The lift stops shortly before reaching bottom position. The lift can be lowered
completely by pressing the LOWER button again. An audible signal sounds until
the lift has reached its lower end position.
Measuring System for Runway Synchronization
Synchronization is achieved through a magnetostrictive measuring system
monitoring the level difference between both runways. Once a preset level
difference is exceeded, the lift stops immediately.
Pressure Relief Valve
The working pressure of the hydraulic system is limited by the pressure relief valve.
Seat Valves
Positive-control seat valves at the hydraulic cylinders prevent sudden lowering
movements of the lift in the event of a rapid pressure drop in the hydraulic system,
e.g. due to line break.
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Safety Latch
The safety latch prevents sudden lowering movements caused by a pressure drop
in the hydraulic system or cylinder leakage.
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2
Description
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2.1
General Information
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The lifts of this series are equipped with two runways supported by a scissors
structure. The drive system consists of two hydraulic cylinders with hydraulic
power unit. The lift is operated via an electric dead man's type control using
pushbuttons, synchronization is achieved through a magnetostrictive measuring
system.
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2.2
Specifications
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DUO CM 4.2 A DUO CM 4.2 U
Fuse (time-delay) 16 A
Working temperature range 5…40 °C
Drive-on height (surface-mounted),
w/o accessories 240 mm ---
Working pressure 190 bar
Installation depth --- 250 mm
Runway width 617 mm
Runway height 126 mm
Runway length 4400 mm
Overall width 2075 mm
Overall length 5900 mm 4400 mm
Weight including power unit 2650 kg
Shipping weight 2700 kg
Lifting height max. 2075 mm
Full travel 1850 mm
Raising time, load-dependent approx. 40 s
Hydraulic power unit 2.5 kW
Hydraulic fluid qty. 40 l
Noise emission < 70 dB(A)
Mains frequency 50 Hz
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DUO CM 4.2 A DUO CM 4.2 U
Mains voltage 400 V
Phases 3
Pinch point protection Audible signal "CE Stop"
Lowering time, load-dependent approx. 40 s
Load capacity 4200 kg
Load capacity of wheel-free jack 3500 kg
Shipping dimensions W x H x L 800 x 800 x 4500 mm
DUO CM 5.0 A DUO CM 5.0 U
Fuse (time-delay) 16 A
Working temperature range 5…40 °C
Drive-on height (surface-mounted),
w/o accessories 290 mm ---
Working pressure 190 bar
Installation depth --- 300 mm
Runway width 630 mm
Runway height 176 mm
Runway length 5200 mm
Overall width 2210 mm
Overall height 290 mm
Overall length 6800 mm 5200 mm
Weight including power unit 3000 kg
Shipping weight 3200 kg
Lifting height max. 2140 mm
Full travel 1850 mm
Raising time, load-dependent approx. 50 s
Hydraulic power unit 2.5 kW
Hydraulic fluid qty. 40 l
Noise emission < 70 dB(A)
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DUO CM 5.0 A DUO CM 5.0 U
Mains frequency 50 Hz
Mains voltage 400 V
Phases 3
Pinch point protection Audible signal "CE Stop"
Lowering time, load-dependent approx. 40 s
Load capacity 5000 kg
Load capacity of wheel-free jack 3500 kg
Shipping dimensions W x H x L 800 x 800 x 5300 mm
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2.3
Sample Nameplate
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Lifts of this series have one large and one small nameplate each at the control
desk and at the hydraulic power unit. In the event of customer complaints, hotline
requests or spare parts orders, serial number and YoM of the lift should always be
indicated.
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SCISSORS LIFT
Ser. No. / Date of Production: ***
Project: ***
Model and Version: ***
Supply Voltage: ***
Frequency: ***
Rated Current: ***
Fuse Protection: ***
Load Capacity: ***
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14
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3
Transport and Storage
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Check package to ensure it is complete, in accordance with the order
confirmation. Report any transport damage to the carrier immediately.
During loading, unloading and transport always use suitable lifting equipment,
material handling equipment (e.g. cranes, forklifts, etc.) and the right load handling
attachments and slings. Always ensure that the parts to be transported are
suspended or loaded properly so that they cannot fall, taking into account size,
weight and the centre of gravity.
Store the packages in a covered area, protected from direct sunlight, at a low
humidity and with temperatures between 0...+40 °C (32…104 °F). Do not stack
packages.
When unpacking, take care to avoid any possibility of injury or damage. Keep at a
safe distance when opening the package strapping, do not allow any parts to fall
out.
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4
Installation and Initial Operation
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Installation and initial operation of the equipment may be done only by authorized
and trained service technicians provided by the manufacturer, licensed dealers or
service partners.
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5
Operation
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5.1
Main Switch
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Main switch in position 0: Power supply OFF
Main switch in position 1: Power supply ON
When in position 0, the main switch can be protected against
tampering by means of a padlock.
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15
BA082901-en
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5.2
Controls and Indicators
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Function
Short Form
Raise lift LIFT UP
Lower lift LIFT DOWN
Raise wheel-free jack WFJ UP
Lower wheel-free jack WFJ DOWN
Lower onto locks LOCK
Hydraulic inclination (DUO CM only) F2
Unlock sliding plate (DUO UC only) F1
LED red (Malfunction or Error code)
LED yellow (Warning or Error code)
LED green (Ready for operation)
Illumination
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E
F
G
H
I
B
C
K
J
A
D
16
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5.3
Display Codes
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LED Code
RED
YELLOW
GREEN
--- --- Lighting Ready for operation
--- --- Flashing Service interval expired
--- Flashing Lighting Information message; count
flash code, contact service
Lighting Flashing --- Error message; count flash
code, contact service
Flashing --- Lighting Emergency operation, service
mode enabled
Flashing Flashing Lighting
Emergency operation, service
mode enabled, position sensor
disabled
Flashing Flashing Flashing Lighting up briefly: Control unit
not (yet) enabled
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5.4
Using Support Blocks
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1 The support blocks are approved for usage on lifts with a rated load capacity of
3,500 kgs.
2 Always use four original MAHA support blocks of identical size and shape.
3 Do not use support blocks with cracks, broken-off pieces or other damage.
4 Check that all support blocks and rubber pads are free of oil, grease, dirt or
debris.
5 Place the support blocks under the vehicle manufacturer‘s recommended lift
points.
6 Note correct positioning of the support blocks.
7 Raise the vehicle until the tyres clear the floor. Stop and recheck the lift
supports for secure contact with the vehicle body.
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BA082901-en
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The support block must be placed fully on the surface without extending byond
the edges.
A Extension B Support surface; available are:
Granulate coating
Granulate foil
Rubber plate
C Support block
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A
C
B
B
A
C
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Diagonal positioning is permissible only with granulate coated surfaces (a). If
knobbly pads are used, these must mesh with the support blocks (b).
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a
a
b
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5.4.1
Stacking Two Blocks on Top of Each Other
Only the “DUO“ hard rubber blocks (VZ 975074) and the ductile plastic blocks (VZ
970045) may be stacked on top of each other, but not more than two blocks per
lifting point.
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5.5
Raising
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Lift is in bottom position.
1 Center the vehicle on the lift.
2 Protect the vehicle against roll-off (parking brake, chocks).
3 Leave vehicle and stay clear of lift.
4 Press LIFT UP button until the desired height is reached.
Lift stops once button is released or upper limit stop is reached.
When the lift is below the pinch point, it can be raised only with the wheel-
free jack
in its defined park position.
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Make sure to center the vehicle on the lift
. Eccentric positioning may result in faulty
measurement.
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5.6
Lowering
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1 To lower the lift press the LIFT DOWN button until the desired height is
reached.
Lift briefly raises to disengage the latches from the mechanical locks.
Lift stops once button is released or lower limit stop is reached. The lift always
stops shortly before bottom position.
2 To lower the lift completely, release the LIFT DOWN button and push it again.
During lowering of lift an audible signal sounds.
3 Release parking brake, remove chocks and drive the vehicle off the lift.
When completely lowering the lift, be sure to push the LIFT DOWN button until
the LED of the LOCK button lights up.
The lift can be fully lowered only when the axle lift is in its home position.
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5.7
Wheel-Free Jack (Optional)
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Raising
Vehicle must be centered over the wheel-free jack.
1 Lift the extensions using the handles and position them under the vehicle lift
points.
2 If required, use additional spacer blocks under the vehicle.
3 Raise the vehicle briefly using button <WFJ UP> and check for secure contact
of the extensions at the vehicle manufacturers' recommended lift points. Then
raise the vehicle to the desired height.
Raising motion is stopped when button is released or upper limit stop is
reached.
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MAHA DUO CM 4.2 A Original Operating Instructions

Type
Original Operating Instructions
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