Safety Systems; Operation; Important Notes On Operation; Switch-On - Bosch VLH 2155 Manual Original

en 28 | VLH 2155 | Operation
5.10

Safety systems

¶
On erection and during operation, ensure proper
operation of the safety systems and perform checks
regularly and after any malfunctioning.
¶
Only ever have the lifting platform maintained and
repaired by Bosch customer service or an authorized
service agent with appropriate certification.
¶
Always use genuine replacement parts. The installa-
tion of parts from other manufacturers renders the
type approval and any warranty claims invalid.
¶
In particular, make sure operation of the safety
systems listed below is always checked after any
malfunctioning.
Safety feature Function
EMERGENCY By way of the lockable yellow and red mas-
STOP function ter switch.
Deadman The lifting (o) and lowering (u) functions
control are only active while ever the control lever is
being actuated and held in position.
A locking handle prevents unintentional
actuation of the control lever.
Limit switch A switch rod which actuates a limit switch
is provided at the overhead beam to stop
tall vehicles coming into inadvertent contact
with the overhead beam.
Synchronization Synchronization of the two lifting carriages is
control ensured by two steel cables.
Locking pawls Each column is provided with a locking pawl.
The locking pawls engage automatically
when the control lever is no longer actuated
to stop unintentional lowering of the lifting
platform.
Swivel arm The support arms are locked automatically
locking as of a lifting height of approx. 20 cm. This
prevents swivelling of the support arms and
thus possible slipping of the mounts.
Foot protection Foot protection is provided by deflectors
attached to the support arms.
Overload The drive motor is protected by a circuit
protection for breaker (QF1) in the electrics box. The
drive motor circuit breaker can be reset mechanically.
Pressure relief The hydraulic system is protected by
valve a pressure relief valve.
Tab. 1: Safety features
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1 689 989 141 2017-05-08
6.

Operation

6.1

Important notes on operation

¶
The lifting platform is only to be operated by autho-
rized, qualified personnel of at least 18 years of age.
¶
The passenger vehicles or motor vehicles to be lifted
must not have a maximum gross weight of more than
5500 kg.
¶
With maximum load, the load distribution should
be no more than 3 : 1, i.e. the load on one pair of
support arms should not exceed 4125 kg.
¶
Certain special-purpose vehicles are not to be raised
using 2-column lifting platforms. Before lifting, check
that the vehicle is not a special-purpose vehicle.
¶
Only raise the vehicle at the four jacking points spe-
cified by the vehicle manufacturer.
¶
Only ever operate the lifting platform by way of the
operating unit provided.
¶
Before moving the lifting platform, make sure there
is no-one in the hazard zone and that there are no
objects leaning against or positioned on the vehicle
or lifting platform.
¶
Access to the lifting platform area must not be gran-
ted to non-authorized personnel.
¶
The carrying of persons on the lifting platform or in
the vehicle is prohibited.
¶
Never use the lifting platform as a crane or support
for other lifting mechanisms (e.g. block and tackle).
¶
Electric welding work is only to be performed on the
raised vehicle or on the lifting platform itself if the
master switch is set to OFF (O).
¶
Never use the lifting platform in the event of mal-
functioning or component damage.
¶
In the event of problems, the lifting platform is to
be immediately shut down and secured against
unauthorized use and Bosch customer service or an
authorized service agent must be informed.
¶
Lock the master switch when not in use.
6.2

Switch-on

Switch on the VLH 2155 by way of the master switch.
¶
Set the master switch to the ON (I) position.
"
Lifting platform is ready for operation.
6.3

Preparation

1. Fully lower the support arms.
2. Swivel the support arms to the maximum through-
width.
3. Remove any tools, dirt, grease and oil from the vici-
nity of the lifting platform.
4. Remove any grease and oil from the mounts.
Robert Bosch GmbH