Page 1
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RGA UC
Mobile Column Lift
Original Operating Instructions
BA492401-en
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Manufacturer
Service
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BA492401-en
2019-06-12
© MAHA Maschinenbau Haldenwang GmbH & Co. KG
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.
MAHA Maschinenbau Haldenwang GmbH & Co. KG
Hoyen 20
87490 Haldenwang
Germany
Phone: +49 8374 585 0
Fax: +49 8374 585 590
Mail: maha@maha.de
Web: www.maha.de
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MAHA SERVICE CENTER
Maybachstraße 8
87437 Kempten
Germany
Phone: +49 8374 585 100
Fax: +49 8374 585 491
Mail: service@maha.
de
Web: www.mahaservicecenter.de
BA492401-en
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Contents
1
Safety .................................................................................................................... 5
2
Description .......................................................................................................... 10
3
Operation ............................................................................................................. 13
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1.1 Introduction .............................................................................................................. 5
1.2 Symbols and Signal Words ...................................................................................... 5
1.2.1 Personal Injury .......................................................................................................... 5
1.2.2 Property Damage ..................................................................................................... 5
1.2.3 Information ............................................................................................................... 5
1.3 Intended Use ........................................................................................................... 6
1.4 Inappropriate Use ..................................................................................................... 6
1.5 Requirements on Operating and Service Personnel .................................................. 6
1.6 Safety Instructions for Commissioning ...................................................................... 6
1.7 Safety Instructions for Operation............................................................................... 7
1.8 Safety Instructions for Servicing ................................................................................ 7
1.9 What to Do in the Event of Defects or Malfunctions .................................................. 8
1.10 What to Do in the Event of an Accident .................................................................... 8
1.11 Safety Features ........................................................................................................ 9
1.11.1 Locking Device ......................................................................................................... 9
1.11.2 Braking Motor .......................................................................................................... 9
1.11.3 Phase Sequence Relay ............................................................................................ 9
1.11.4 Thermal Overload Protection .................................................................................... 9
1.11.5 Safety Shutdown after Motor Overload ..................................................................... 9
1.11.6 Warning and Information Labels ............................................................................... 9
2.1 Design and Operating Principle .............................................................................. 10
2.2 Specifications ......................................................................................................... 11
2.3 Sample Nameplate ................................................................................................. 12
3.1 Handling / Moving the Columns .............................................................................. 13
3.2 Controls and Indicators .......................................................................................... 14
3.3 Main Switch ........................................................................................................... 16
3.4 Initial Operation ...................................................................................................... 16
3.5 Positioning, Logging in and Interconnecting the Columns ....................................... 17
3.6 Switching over to Group Mode ............................................................................... 18
3.7 Switching over to Single Mode ............................................................................... 18
3.8 Raising and Lowering ............................................................................................. 19
3.9 Shutdown .............................................................................................................. 19
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4
4
Maintenance ........................................................................................................ 22
5
Service Lifetime .................................................................................................... 34
6
Dismantling .......................................................................................................... 34
7
Disposal ............................................................................................................... 34
8
Contents of the Declaration of Conformity ............................................................. 34
3.10 Emergency-down Function, Mechanical ................................................................. 20
3.11 Adjustment of Support Forks .................................................................................. 21
4.1 Annual Inspection ................................................................................................... 22
4.2 Care Instructions .................................................................................................... 22
4.3 Maintenance by the Operator ................................................................................. 23
4.3.1 Lubricants .............................................................................................................. 23
4.3.2 Recirculating Ball Nut ............................................................................................. 23
4.3.3 Moving Gear .......................................................................................................... 24
4.3.4 Options .................................................................................................................. 25
4.3.5 Thrust Washers ...................................................................................................... 26
4.4 Setting the Hydraulic Jack ...................................................................................... 29
4.5 Battery Charge Condition ....................................................................................... 30
4.6 Troubleshooting ..................................................................................................... 31
4.7 Spare Parts ............................................................................................................ 33
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1
Safety
1.1
Introduction
1.2
Symbols and Signal Words
1.2.1
Personal Injury
DANGER
WARNING
CAUTION
1.2.2
Property Damage
NOTICE
1.2.3
Information
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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
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safety instructions are not covered by the product liability regulations.
indicates an immediate hazard which, if not avoided, will result in death or severe
personal injury.
indicates a potential hazard which, if not avoided, could result in death or severe
personal injury.
indicates a potential hazard which, if not avoided, could result in moderate or minor personal injury.
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indicates a potentially harmful situation which, if not avoided, could result in damage to the equipment or surrounding objects.
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indicates important information notes.
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1.3
Intended Use
1.4
Inappropriate Use
WARNING
1.5
Requirements on Operating and Service Personnel
WARNING
1.6
Safety Instructions for Commissioning
WARNING
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• This lift is to be used exclusively for the safe lifting of commercial and agricultur-
al vehicles such as trucks, buses, tractors etc. Observe the rated load capacity.
• The lift may not be modified without the express written consent of the manu-
facturer. In case of non-compliance the declaration of conformity becomes
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void.
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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All persons employed in the operation, maintenance, installation, removal and disposal of the device must
• be at least 18 years old,
• be mentally and physically suited for these activities,
• be demonstrably trained and instructed in writing,
• 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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• Use the lift on a hard, level surface only.
• The standard lift version must not be installed and commissioned in the vicinity
of explosives or flammable liquids.
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1.7
Safety Instructions for Operation
WARNING
1.8
Safety Instructions for Servicing
WARNING
• Ensure that ecologically harmful substances are disposed of only in accordance
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• Read the detailed operating manual.
• Use personal protective equipment.
• The lift owner/operator must provide a tidy and clean workplace.
• Carry out a visual and functional check of the equipment every day before start-
ing work.
• Do not exceed the rated load capacity per column as indicated on the lift
nameplate.
• Ensure an unobstructed movement of lift and vehicle.
• The vehicle doors must be closed during lift operation.
• After raising the vehicle briefly, stop and check the lift supports for secure con-
tact with the vehicle.
• Closely watch lift and vehicle during raising and lowering cycles.
• The working area which cannot be overviewed by the operator should be moni-
tored by a second person.
• When operating the lift in single or group mode, make sure the vehicle is not
tilted.
• Do not allow anyone to stay in lift area during raising and lowering cycles.
• Do not allow anyone to climb on lift or inside raised vehicle.
• Keep lift and vehicle free of tools and parts.
• When using the lift outdoors, lower the vehicle and stop operation when the
wind velocity exceeds 6 m/s.
• Push the support forks completely under the wheels or lift points of the vehicle
to be raised.
• Do not drive over or pinch electrical cables.
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• Service work may be done by authorized service technicians only.
• Turn off and padlock the main switch before doing any repair, maintenance or
setup work.
• Disconnect the mains plug before opening the control box.
• Work on the electrical equipment may be done by service technicians or certi-
fied electricians only.
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with the appropriate regulations.
1.9
What to Do in the Event of Defects or Malfunctions
WARNING
1.10
What to Do in the Event of an Accident
• Do not use high pressure or steam jet cleaners or caustic cleaning agents for
cleaning the lift,
• Do not replace or override the lift safety devices.
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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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• 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.
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• Remain calm and answer any questions that may arise.
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1.11
Safety Features
1.11.1
Locking Device
1.11.2
Braking Motor
1.11.3
Phase Sequence Relay
1.11.4
Thermal Overload Protection
1.11.5
Safety Shutdown after Motor Overload
≥ 15 %
1.11.6
Warning and Information Labels
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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.
The phase sequence relay in the power supply unit ensures safe
and independent operation.
Overload protection via electronically monitored thermoswitches.
The motor load is permanently monitored by the control PCB. If an overload of
occurs, the 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
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for defective labels.
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2
Description
2.1
Design and Operating Principle
Complete System
Column
Control
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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 rechargeable batteries.
Each column is equipped with a control unit made up of the following components:
• Operating panel with display
• Microprocessor
• Pulse generators and sensors
• Watchdog monitoring
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• Radio transmitter / receiver
• Drive unit
• Emergency stop switch
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2.2
Specifications
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2.3
Sample Nameplate
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Load capacity per column 7500 kg
Full travel 1750 mm
Raising / Lowering time 113 s
Raising speed 920 mm/min
Tyre diameters 550…1500 mm
Motor power 1.5 kW
Protection class IP 54
Control voltage 48 V
Charging voltage 230 V
Net weight per column 545 kg
Surface load 0.5 N/mm
Noise emission < 70 dB(A)
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Lifts of this model series have one nameplate at the lifting carriage of each column
and also on the supply unit (if present).
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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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. ***
2
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3
Operation
3.1
Handling / Moving the Columns
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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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Position 2 is the neutral position.
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3.2
Controls and Indicators
A LED Display: Operating Status
B Button: Raise
C Button: Lower
D LED Display: Number of Columns
E Button: Open/Close Column Unit
F LED Display: Column Unit
G LED Display: Channel Number
H Button: Select Channel Number
I LED Display: Operating Mode
J Button: Select Operating Mode
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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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3.3
Main Switch
DANGER
Main switch in position 0
Main switch in position 1
3.4
Initial Operation
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The main switch is used as emergency switch. In case of emergency immediately
turn it to position 0!
Lift is disconnected from power supply
Lift is ready for operation
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Place the receiving antennae in an upright position before operating the columns.
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3.5
Positioning, Logging in and Interconnecting the Columns
in columns. After closing verify
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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 Turn the main switch to position 1.
The "Auto" LED flashes.
3 Select the transmission channel. All
columns belonging to the same unit
must be set to the same channel.
4 Confirm using the operating mode
button.
The "Auto" LED lights permanently.
5 Repeat the procedure for all columns.
Number of columns within the unit is displayed.
Before closing the unit check the number of loggedthat it corresponds with the number of columns appearing on the display.
6 Once all columns are logged in, close the unit
using button "0/1".
The "Column unit" LED lights up, lift is ready for
operation.
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3.6
Switching over to Group Mode
3.7
Switching over to Single Mode
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1 Switch to Group mode using the op-
erating mode button on the desired
columns.
The "Group" LED lights permanently.
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1 Switch to Single mode using the op-
erating mode button on the desired
column.
The "Single" LED lights permanently.
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3.8
Raising and Lowering
WARNING
transmission
3.9
Shutdown
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When operating the lift in Group or Single mode, make
sure the vehicle is not tilted. Otherwise the vehicle may
fall off the lift!
• Before operating the lift, check that the number of columns appearing on the
• All columns belonging to the same unit must be set to the same channel.
• If the unit is opened there may be interference problems with other
1 Press "Raise" or "Lower" button.
Lift stops once button is released or end position is
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1 Before shutting down the lift, open
"Column unit" LED goes off.
display corresponds to the number of columns actually logged in.
channels.
reached.
the column unit using button "0/1".
2 Turn main switch to position 0.
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3.10
Emergency-down Function, Mechanical
WARNING
1
2
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Authorised 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.
Once the locking device is in engagement, manual lowering is no longer possible.
The following components are required for manual lowering:
A Lever at brake motor B Locking device
1 Pull or shake the safety wedge downward on each column.
2 First push onto the latch using a long screw driver, then additionally push the
manual release lever (in arrow direction).
Intermittently lower the columns in increments of approx. 50 mm, until the lift is
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in bottom position.
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3.11
Adjustment of Support Forks
WARNING
3
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The fork width can be adjusted to the required tyre diameters or lifting points by
moving the wheel sliders.
• Pull out the locking pin (1) with one hand and hold at the handle.
• Lift the wheel slider (2) by the fork end with the other hand and position it as re-
quired. Position the wheel sliders symmetrically to the lifting column to ensure
an equal load distribution (3).
• Insert the locking pin to secure the wheel sliders.
• Verify that the locking pin is correctly engaged after releasing the fork.
Avoid unequal load distribution. Risk of tilting!
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4
Maintenance
DANGER
Risk of death or severe personal injury by electric shock
4.1
Annual Inspection
12 (twelve) months
4.2
Care Instructions
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Before doing any maintenance work, turn off the main switch and protect it
against tampering.
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• The maintenance interval prescribed by the manufacturer is
• Maintenance work shall be done only by authorized and trained service techni-
.
This maintenance interval refers to normal workshop usage. If the equipment is
used more frequently or under severe operating conditions (e.g. outdoors), the
interval must be reduced accordingly.
cians provided by the manufacturer, licensed dealers or service partners.
• In case of non-compliance the manufacturer's warranty becomes void.
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• Periodically clean the equipment and treat it with a care product.
• Repair damage to the paintwork immediately to prevent corrosion.
• Do not use caustic cleaning agents or high pressure and steam jet cleaners to
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avoid equipment damage.
Regular care and maintenance is the key condition for functionality and long life
expectancy of the equipment!
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4.3
Maintenance by the Operator
4.3.1
Lubricants
NOTICE
4.3.2
Recirculating Ball Nut
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For lubrication use a mineral-oil based grease which is suitable for rolling bearings.
Do not use greases containing solid lubricants (such as graphite or MoS2.).
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Twice a year grease the recirculating ball nut with 4…7 strokes from a grease gun.
The lubricator is located at the recirculating ball nut inside the carriage.
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4.3.3
Moving Gear
To make the lubricator accessible, remove the screws (1 and 3). Then remove cover plate (4) and fastening strip
of rubber cover (2).
Fold down the rubber cover.
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Periodically oil the rollers of the moving
gear.
If they are equipped with lubricators,
lubricate using a grease gun.
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4.3.4
Options
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Recirculating ball nuts with outside lubricator (option) should be greased every six months with four to seven strokes
from a grease gun.
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Carriage axles equipped with a lubricator (option) should be periodically
greased using a grease gun.
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4.3.5
Thrust Washers
Visual Check with Feeler Gauge
2 mm
2 mm
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Once a month, check the bronze thrust washers for wear using a feeler gauge
(see Fig.). New washers have a thickness of 2 mm. Washers showing an abrasion
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of more than 1 mm must be replaced.
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Shaking Test with Lifting Carriage
WARNING
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In addition to the visual check, carry out a shaking test with the lifting carriage every three months. To do this, hold the carriage by the support fork, then pull forward with a firm twist.
In the event that the guide rollers run off the guideways during the shaking test,
the lifting column must be removed from operation until the thrust washers have
been replaced.
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4.4
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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OPEN INCREASE
CLOSE 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 REDUCE
CLOSE INCREASE
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4.5
Battery Charge Condition
Indication
Charge Condition
Action
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RED, ORANGE, GREEN
Switching to GREEN
during charging process
• The batteries may be charged at any time regardless of the control unit being
on or off. Do not operate unit while charging.
RED
ORANGE/YELLOW
GREEN
Flashing
Battery flat, only lowering
possible.
Battery weak, operation may
be continued.
Battery fully charged or partly
discharged.
Charge at once.
Charge as soon as
possible.
---
Battery being charged. ---
Battery fully charged.
Disconnect mains
plug.
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• To charge the batteries connect the mains plug.
• The charging process takes approx. 12 h with a flat battery. Overcharging is
not possible.
• To prevent the batteries from discharging unnecessarily, each control unit
should be disabled completely when the lift is not in use.
• The batteries should be occasionally charged even when not in use. This is to
ensure that their full capacity is available during lift operation and to compensate for any self-discharge losses.
• To avoid exhaustive discharge, any column with undervoltage will switch off au-
tomatically.
• For a long life expectancy the batteries should not be fully discharged.
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31
4.6
Troubleshooting
Status Indication
Diagnosis
Remedy
ON
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Red Yellow Green
OFF OFF OFF
OFF OFF OFF
OFF OFF OFF
and control can be ena-
bled only briefly or not at
all.
OFF OFF OFF
and control cannot be
enabled at all.
If no other LEDs are ON:
Radio system switched off
after 30 sec.
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…).
Battery undervoltage
Fuse blown, hardware
error.
Briefly press any button to
enable the radio system.
Wait until radio interference has stopped.
Charge batteries using
power cord.
Contact service.
OFF OFF
OFF
OFF
OFF
and lift stops while lower-
ing.
If no other LEDs are ON:
Emergency-stop actuated.
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 or is
blocked by safety wedge.
Enable emergency-stop
button.
Lower lift with emergencydown function.
Raise lift until yellow LED
goes off.
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Status Indication
Diagnosis
Remedy
Status Indication
Diagnosis
Remedy
Red Yellow Green
OFF
OFF
and lift stops while raising.
OFF OFF
Lift overloaded.
Sluggish operation. Possible causes: Long standing under load, insufficient
lubrication…
Upper sensor maladjusted.
Hardware error occurred.
EEPROM / Flash error
occurred.
Release button, try again.
Reduce load if necessary.
Release button, try again.
Contact service if required.
Contact service.
Press and hold for 4
seconds control goes
off. Switch on again. If
error persists, contact
service.
Contact service.
Red Yellow Green
FLASH-
ING
OFF OFF Check RPM sensor Contact service.
1 x
2 x OFF OFF --- ---
3 x OFF OFF Check Limit switch Contact service.
4 x OFF OFF Check Safety switch Contact service.
5 x OFF OFF --- ---
6 x OFF OFF
Thermal switch Motor
open
Let motor cool down.
7 x OFF OFF I2T monitoring Let motor cool down.
8 x OFF OFF --- ---
9 x OFF OFF Hardware overcurrent Contact service.
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Status Indication
Diagnosis
Remedy
turn on again after approx.
4.7
Spare Parts
Red Yellow Green
10 x OFF OFF Battery overcurrent Contact service.
11 x OFF OFF Motor overcurrent Only lowering possible.
12 x OFF OFF Short circuit to earth Contact service.
13 x OFF OFF
14 x OFF OFF
Interruption/Short circuit
Safety wedge
Interruption/Short circuit
Brake
Contact service.
Contact service.
Error Voltage enable 15 V
15 x OFF OFF
Converter, Power board
Contact service.
defective
16 x OFF OFF Memory error, e.g. height Contact service.
Error Voltage enable 15 V
17 x OFF OFF
Control, check PCB if re-
Contact service.
quired
18 x OFF OFF
CPU error, Control PCB
defective
Contact service.
19 x OFF OFF Check Limit switch Contact service.
20 x OFF OFF Check Safety switch Contact service.
Connection error between
21 x OFF OFF
converter and control;
Contact service.
check 4-pole cable (X8)
ON ON ON
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To ensure safe and reliable operation, only use original spare parts supplied by the
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equipment manufacturer.
Error occurred (Watchdog).
Turn off main switch and
5 sec. If error repeats,
contact service.
BA492401-en
Page 34
34
5
Service Lifetime
6
Dismantling
7
Disposal
8
Contents of the Declaration of Conformity
MAHA Maschinenbau Haldenwang GmbH & Co. KG
Model:
Designation:
Directives:
Standards:
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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 evaluated and scheduled by a qualified person during the
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annual safety inspection.
Decommissioning and dismantling of the equipment may be done only by
specially authorized and trained personnel provided by the manufacturer, licensed
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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
Phone: +49 (0) 8374 585 0
Fax: +49 (0) 8374 585 500
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Email: info@maha.de
Alternatively, you may take the equipment to a specialised waste management
plant to ensure that all components and operating liquids are properly disposed
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of.
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
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discussed and approved by named company beforehand.
RGA UC
=== Ende der Liste für Textmarke Inhalt ===
BA492401-en
Mobile Column Lift;
Rated Load Capacity per Column 7500 kg
2006/42/EC; 2014/30/EU
EN 1493; EN 60204-1
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