1 689 989 106
2012-09-10
|
Robert Bosch GmbH
Product description | VLS 3130 | 27
en
5.8.5 Operating
unit
Fig. 6:
Operating unit
1 Rotary reversing switch
2 "Foot protection" confirmation button
3 Acoustic
signal
generator
4 Hydraulic
unit
5 Oil
tank
6 Leads connecting to lifting platform
5.8.6
Rotary reversing switch
Lockable rotary reversing switch with emergency stop
function. The rotary reversing switch has three settings:
Setting
Function
O
Off/emergency stop
Lifting platform is deactivated. The rotary reversing
switch can be secured with a lock in this position.
o
Raising.
The lifting platform moves up as long as the rotary
reversing switch is pressed to the right. Movement is
stopped in the following cases:
Rotary reversing switch is released.
Upper limit value is reached.
u
Lowering.
The lifting platform moves down as long as the
rotary reversing switch is pressed to the left.
Movement is stopped in the following cases:
Rotary reversing switch is released.
"Foot protection" safety level
(300 mm) is reached.
Lower end position is reached.
Tab. 1:
Rotary reversing switch
5.9 Safety
features
During assembly and operation, it must be ensured
that all safety devices are fully functional. This must
be verified on a regular basis and after any fault.
The lifting platform must only be maintained
and repaired by Bosch customer service or
an authorized service agent with appropriate
certification.
Always use genuine replacement parts. The
installation of parts from other manufacturers will
render the type approval and any warranty claims
invalid.
In particular, the functioning of the following safety
devices must be checked after any fault.
Safety feature
Function
EMERGENCY
STOP function
Via the lockable yellow and red rotary
reversing switch.
Deadman
control
The lifting (
o
) and lowering (
u
) functions are
only active while the rotary reversing switch
is held in the relevant position.
Foot protection
function
Lowering of the lifting platform is stopped
automatically at a height of 300 mm ("foot
protection" safety level). In this case,
release the rotary reversing switch and
check the area under the lifting platform. If
it is safe to do so, press and hold the "foot
protection" confirmation button and turn
the rotary reversing switch to "lowering"
again. A warning signal sounds and the lifting
platform continues to move downward until
the lower end position is reached.
Synchronization
control
The synchronization of the two scissor
mechanisms is ensured by two transverse
bars and a dual-redundant hydraulic system.
Overload
protection for
drive motor
The drive motor is protected by a
temperature sensor. Following an overload,
the lifting platform can be operated again
after a cooling time of 10 minutes.
Tab. 2:
Safety features
