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1.3 Intended Use ....................................................................................................................................... 4
1.4 Inappropriate Use ................................................................................................................................ 4
1.5 Requirements on Operating and Service Personnel ............................................................................. 4
1.6 Safety Instructions for Commissioning ................................................................................................. 5
1.7 Safety Instructions for Operation ......................................................................................................... 5
1.8 Safety Instructions for Servicing ........................................................................................................... 5
1.9 What to Do in the Event of Defects or Malfunctions ............................................................................. 5
1.10 What to Do in the Event of an Accident ............................................................................................... 6
1.11 Safety Features ................................................................................................................................... 6
1.11.2 Braking Motor ..................................................................................................................................... 6
3.3 Main Switch....................................................................................................................................... 11
3.4 Control Unit ....................................................................................................................................... 12
3.5 Positioning, Logging in and Interconnecting the Columns ................................................................. 14
3.6 Switching over to Group Mode .......................................................................................................... 15
3.7 Switching over to Single Mode .......................................................................................................... 15
3.8 Raising and Lowering ........................................................................................................................ 15
4.2 Care Instructions ............................................................................................................................... 18
4.3 Spare Parts ....................................................................................................................................... 18
4.4 Maintenance by the Operator ............................................................................................................ 19
4.4.1 Checking the Load Nut for Wear ....................................................................................................... 19
BA491201-en
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4.4.2 Greasing the Load Nut ...................................................................................................................... 20
4.4.3 Greasing the Support Bearing of the Lifting Screw and the Moving Gear .......................................... 21
4.5 Setting the Hydraulic Jack ................................................................................................................. 22
• Remain calm and answer any questions that may arise.
The locking device serves to prevent inadvertent lowering motions caused by gear,
load nut or lifting screw failure. The carriage is blocked by safety wedge (1) and
counterwedge (2).
The motors are equipped with AC spring pressure brakes. Once the motors
are switched off, the brakes prevent any further movements.
Overload protection via electronically monitored thermoswitches.
The motor load is permanently monitored by the control PCB. If an overload of
system will switch off automatically. In this case the lift cannot be raised any more, but it can be
normally lowered to bottom position.
Do not change or remove the warning and information labels. Order replacement for defective
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•
The complete system of the Mobile Column Lift consists of individual columns, which can be
interconnected (e.g. 4, 6, 8 columns) and used to raise commercial vehicles. A maximum number
of 8 columns per lift system can be logically interconnected.
A maximum number of 8 lift systems can be operated parallel, with information exchange on
different radio channels.
The complete system can be operated from each individual column. The columns interact via radio
communication, with each lift system using its own channel.
•
The columns are mechanically designed for engaging the wheels of commercial vehicles.
They are all identical and interchangeable from system to system. Power supply is effected via a
standard three-phase connection.
•
Each column is equipped with a control unit made up of the following components:
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MOBILE COLUMN LIFT
Ser.No. / Date of Production: ***
Project: ***
Type: ***
Charging Voltage: ***
Operating Voltage: ***
Net weight per column: ***
Load capacity per column: ***
System of Protection: ***
WEEE Reg. No. ***
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Screw a lifting-eye bolt M16 into the tap hole on the motor plate of the column. Insert a chain or
strap through the ring and lift the column using a hoist or forklift.
Close hydraulic valve by putting valve lever in position 3.
Pump with handle to raise the moving gear. Move column to desired position.
To lower the moving gear, open the hydraulic valve by putting the valve lever in position 1. The
column is ready for operation.
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The main switch is used as emergency switch. In case of emergency turn it to position 0.
• Main switch in position 0: Power supply is interrupted
• Main switch in position 1: Lift is ready for operation
• When in position 0, the main switch can be protected against tampering
by means of a padlock.
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Red, yellow and green LEDs indicate the operating status. See also section "Troubleshooting".
When button is pushed, lift raises until button is released or upper end position is reached.
When button is pushed, lift lowers until button is released or lower end position is reached.
Number of LEDs represents number of columns in a column unit. Flashing LED indicates next
free column number in an open column unit.
Use this button to open a closed column unit or to close an open unit.
LED lighting up indicates that the column unit is closed. LED also lights up when operating
mode is changed (see below).
LED lighting up indicates current channel number.
Use this button to switch on to the next available channel. Occupied channels are skipped,
channel 10 is followed by channel 1 and so on.
Current operating mode is indicated by LED.
Use this button to switch on to the next mode. "Single" (one column), "Auto" (all columns of a
column unit) and "Group" (several columns) can be selected.
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BA491201-en
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3.5
Positioning, Logging in and Interconnecting the Columns
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1 Push the support forks completely under the wheels or lift points of the vehicle to be raised.
Use the lift on a hard, level surface only.
2 Connect all columns to be used with the power supply.
It is possible to plug in either each column separately or a combination of not more than four
columns.
3 Turn the main switch to position 1.
LED "Auto" flashes.
4 Select the transmission channel. All columns
belonging to the same unit must be set to
the same channel.
5 Confirm using the operating mode button.
LED "Auto" lights up permanently.
6 Repeat the procedure for all columns.
Number of columns within the unit is displayed.
Before closing the unit check the number of logged-in columns. After closing verify that it
corresponds with the number of columns appearing on the display.
7 Once all columns are logged in, close the unit using button
"0/1".
LED "Column unit" lights up, lift is ready for operation.
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Authorized personnel only! Do not restart the lift before the error has been remedied.
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In case of power failure or defects the lift can be lowered manually. The lift may only be lowered,
not raised.
1 Remove the fan cowl from the motor.
2 Screw a hex head cap screw M8x10 into the thread inside the motor shaft.
3 Place a suitable socket on the screw and turn it in clockwise direction using a hand drill, until
the carriage has lowered approx. 50 mm.
4 Intermittently lower the columns in increments of approx. 50 mm, until the lift is in bottom
position.
5 After the error has been remedied, perform an emergency-down to reinitialize the control, or
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A Support plate with location hole for central pivot of semitrailer
B Lift points for support forks
1 Position transverse beam under central pivot (C) of semitrailer.
2 Lower semitrailer until central pivot is approx. 20 mm above support plate (A).
Do not load the rollers of the transverse beam with the weight of the semitrailer.
3 Check for alignment of central pivot and location hole. Adjust if required.
4 Position the columns.
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5 Raise the semitrailer being sure the central pivot engages the location hole.
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Shut down and lock the lift until the worn-out load nut has been replaced.
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Maintenance interval: 12 months
1 Lower the carriage to bottom position.
2 Remove the cap plug from the inspection window (arrow).
3 Check the clearance between check screw (A) and safety nut (B). New load nuts have a
clearance of approx. 2 mm. If no clearance can be detected, the load nut is worn out and must
be replaced together with the safety nut.
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4 At completion of wear check reinstall the cap plugs.
The correct setting of the clearance between wear check screw and safety nut is imperative for
proper functionality and safety of the lifting screw and load nut system.
If the clearance is not set properly when installing the new load nut, the wear and tear on the load
nut can no longer be reliably checked. In this case, the safe operation of the lift can no longer be
guaranteed.
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BA491201-en
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4.4.2
Greasing the Load Nut
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1 Lower the carriage to bottom position.
2 Remove the cap plug from the lubricating window (arrow).
3 Grease the load nut through the lubricating nipple using a grease gun.
4 Run the lift through a full raising and lowering cycle to distribute the grease evenly on the lifting
screw.
5 Repeat the lubrication procedure twice or three times.
6 At completion of lubrication reinstall the cap plugs.
Maintenance interval: 6 months
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4.4.3
Greasing the Support Bearing of the Lifting Screw and the Moving Gear
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1 Remove the lifting screw cover.
2 Lubricate the support bearing through the
lubricating nipple (large opening, arrow) using
a grease gun.
3 After lubricating reinstall the lifting screw
cover.
Maintenance interval: 6 months
• Periodically oil the rollers of the moving gear.
If they are equipped with lubricating nipples,
lubricate using a grease gun.
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BA491201-en
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4.5
Setting the Hydraulic Jack
A: Setting the Lowering Speed
Threaded Pin
Lowering Speed
B: Setting the Responsiveness of the Automatic Lowering Function
Adjusting Screw
Responsiveness
A B
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Note that the jack must be mounted to the column when making any settings.
The lowering valve is located on the right-hand side of the cylinder. To set the lowering speed,
adjust the threaded pin using an Allen key while holding the lock nut firmly with an open-end
wrench. Check for correct setting by carefully lowering the jack.
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BA491201-en
OPEN
CLOSE
INCREASE
REDUCE
The automatic lowering valve is located on the left-hand side of the cylinder. Remove the screw
plug using an Allen key, then insert a flat-tip screwdriver to set the adjusting screw. Soak up
leaking fluid with a rag. Reinstall the screw plug.
OPEN
CLOSE
REDUCE
INCREASE
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5
Troubleshooting
Indication (Status LEDs)
Diagnosis
Remedy
FLASH
ON
FLASH
FLASH
ON
ON
ON
FLASH
ON
ON
ON
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Red
Yellow Green
OFF OFF OFF
OFF OFF Sensor error Contact service.
OFF Load nut failure detected. Contact service.
OFF
OFF
OFF
OFF
If no other LEDs are ON:
Emergency-stop actuated.
If other LEDs are ON: Radio
interference (e.g. Channel,
Mode…). Possible cause:
Devices in the vicinity transmitting on the 433 MHz band
(such as garage door opener,
radio set…).
Lift is not yet referenced, when
a new column with new control
is being connected after final
assembly.
Level difference between
columns too great.
Lift has contacted obstruction
or floor.
Enable emergency-stop button.
Wait until radio interference has
stopped.
Lower lift with emergencydown function.
Raise lift until yellow LED goes
off.
and lift stops while lowering. Upper sensor maladjusted. Contact service.
OFF
and lift stops while raising. Upper sensor maladjusted. Contact service.
OFF OFF Hardware error occurred.
OFF OFF
and lift stops during operation.
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OFF
Lift overloaded.
Sluggish operation. Possible
causes: Long standing under
load, insufficient lubrication…
Supply network too "weak".
Voltage drops when lift is
started, motor does not reach
working speed.
Voltage drop in supply network.
Error occurred (Watchdog).
Rated load capacity exceeded.
Lowering still possible.
Release button, try again.
Contact service if required.
If error repeats, have network
inspected.
Interrupt voltage for 5 sec. If
error persists, contact service.
If error repeats, have network
inspected.
Turn off main switch and turn
on again after approx. 5 sec. If
error repeats, contact service.
In its standard version, this product is designed for 22,000 load cycles based on EN 1493.
The maximum period of normal use in relation to the possible product life expectancy shall be
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evaluated and scheduled by a qualified person during the annual safety inspection.
Decommissioning and dismantling of the equipment may be done only by specially authorized and
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trained personnel provided by the manufacturer, licensed dealers or service partners.
If you want to dispose of the equipment, please contact your MAHA dealer or the following
address, indicating equipment type, date of purchase and serial number:
MAHA Maschinenbau Haldenwang GmbH & Co. KG
Hoyen 20
87490 Haldenwang
Germany
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Email: altgeraete@maha.de
Alternatively, you may take the equipment to a specialised waste management plant to ensure that
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all components and operating liquids are properly disposed of.
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herewith declares as a manufacturer its sole responsibility to ensure that the product named
hereafter meets the safety and health regulations both in design and construction required by the
EC directives stated below.
This declaration becomes void if any change is made to the product that was not discussed and
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approved by named company beforehand.
MCL / RGB
Mobile Column Lift; Rated Load Capacity per Column 5500 kg
Legal notice based on ISO 16016:
The reproduction, distribution and utilization of this document as well as the communication of its
contents to others without explicit authorization is prohibited. Offenders will be held liable for the
payment of damages. All rights reserved in the event of the grant of a patent, utility model or design.
The contents of this edition have been checked with great care. However, errors cannot be fully
excluded. Subject to technical change without notice.