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1.3 Intended Use ....................................................................................................................................... 5
1.4 Inappropriate Use ................................................................................................................................ 5
1.5 Safety Instructions for Commissioning ................................................................................................. 5
1.6 Safety Instructions for Operation ......................................................................................................... 5
1.7 Safety Instructions for Servicing ........................................................................................................... 6
1.8 What to Do in the Event of Defects or Malfunctions ............................................................................. 6
1.9 What to Do in the Event of an Accident ............................................................................................... 6
1.10 Safety Features ................................................................................................................................... 7
1.10.2 Braking Motor ..................................................................................................................................... 7
2.1 General Information ............................................................................................................................. 8
4.5 Main Switch ...................................................................................................................................... 15
4.7.2 Single Mode ...................................................................................................................................... 16
4.7.3 Group Mode ...................................................................................................................................... 17
4.7.4 Cable Remote Control ....................................................................................................................... 17
5.2 Care Instructions ............................................................................................................................... 21
5.3 Spare Parts ....................................................................................................................................... 21
5.4 Maintenance by the Operator ............................................................................................................ 22
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
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
The mobile column lifts of the RGE series are produced as wheel engaging or universal lifts.
Depending on the version, the lift system consists of 2 or 4 columns and can be expanded to 6
columns in the standard version.
The lift can be expanded up to 12 columns when using a special power supply unit.
All components are easily accessible under the lifted vehicle due to a generous maximum lifting
height of 1750 mm. An extended lifting height of 2400 mm is optionally available.
The lift is a mobile unit whereby the columns can be substituted with stands when vehicles are to
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.
Selector Button (on Control Unit)
Use this button to select between: Automatic / Single / Group mode
Seven-Segment Display (on Control Unit)
Indicates operating and error codes.
RAISE Button (on Control Unit)
Press and hold this button to raise the lift. Lift stops once button is released or upward travel
stop is reached.
LOWER Button (on Control Unit)
Press and hold this button to lower the lift. Lift stops once button is released or downward
travel stop is reached.
Emergency Stop Button (on Control Unit)
In case of emergency press this button to disconnect the lift from the mains supply.
Pull out the button to make the lift ready for operation.
Height offsets between individual columns will be maintained after switch-over to automatic mode.
The offset can be removed either
– by equalizing the carriages in single mode or
– by lowering all carriages to bottom position in automatic mode.
• Lift switches off once first carriage reaches upward travel stop.
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 (2 in), until the lift is in bottom
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Using the optionally available special control unit, the RGE lift can be operated with up to 12
columns – 2 column branches with 6 columns each.
Special control unit
Control unit
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MAHA's mobile lifting systems for trams come standard with an electronic overload protection,
which automatically detects overload occurring at any one column and subsequently shuts off the
system.
In addition, load acknowledge switches are optionally available for tram lifts. Using these switches,
correct load positioning at the lift supports can be easily monitored. Each column is positioned at
the load and switches off as soon as the load properly contacts the support. When all columns
have been positioned correctly at the load (Setup mode), the lift control switches over to regular
operation (Automatic mode).
The load acknowledge switches can be used in combination with various supports such as simple
support plates or prism supports.
• The maintenance interval prescribed by the manufacturer is
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.
•
the manufacturer, licensed dealers or service partners.
• In case of non-compliance the manufacturer's warranty becomes void.
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.
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.
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.
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.
CAN bus without terminating resistor. Check terminating resistors of CAN bus
CAN controller out of step or defective. Turn the main switch off and on again.
Controller in sleep mode due to shortcircuit of CAN lines.
Safety switch triggered.
Carriage has made contact with
obstacle.
Thermoswitch triggered.
Overheated motor. Lift stops and error
message appears.
Normal operation.
Replace connecting cable.
in dummy plug and power supply unit,
contact service.
If error persists, contact service.
Replace connecting cable. Contact
service if necessary.
Switch column with error message to
single mode. Raise carriage to unlock
the safety wedge or remove obstacle.
Let the motor cool down. Check
thermoswitch, motor and column.
Acknowledge error with selector button
on control panel.
Red LED will go out and the lift is ready
for operation.
Yellow on
all
columns
Red on all
columns
Red on all
columns
Insufficient speed / Overspeed.
Lift stops when irregular motor speed is
detected.
Overloaded lift.
Maximum permissible load exceeded. Lower lift to bottom position.
Proximity switch defective.
Proximity switch defective due to shortcircuit or broken wire.
Release control element. The error is
removed and the lift is ready for
operation.
Acknowledge error with selector button
on control panel.
Proximity switch must be replaced,
contact service. Acknowledge error
with selector button on control panel.
BA491701-en
Page 26
26
Display Code
LED
Cause
Action
Load
Red on all
columns
Red on all
columns
Red on all
columns
Red on 1
or several
column(s)
Red on all
columns
Height difference between columns.
Maximum permissible height difference
exceeded.
CAN bus error.
CAN bus connection was briefly
interrupted.
Phase failure of supply system.
The lift stops and remains inoperative
until power supply has been restored.
Phase failure of lift system.
Phase failure of lift system due to
defective connecting cable.
Cyclic Redundancy Check error.
Hardware error occurred while data
being read from or written to the
EEPROM.
Turn the main switch off and on again.
Zeroize the lift by lowering each column
to bottom position in single mode. If
error persists, contact service.
Turn the main switch off and on again.
Lower lift to bottom position. Red LED
will go out and the lift is ready for
operation.
Remove phase failure.
Replace faulty connecting cable.
PCB must be replaced, contact service.
Load acknowledge switch triggered
(Setup or Automatic mode).
Red on 1
or several
column(s)
Display code flashing: Load does not lie
flat against support of this column.
Display code lighting permanently:
does lie flat against support of this
column, but not against supports of all
columns.
Load acknowledge switch triggered
(Group or Single mode).
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
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
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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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.