Bosch VLS 3132 H, Original Instructions Manual

Page: 27 / 196

1 689 989 107 2012-09-10
|
Robert Bosch GmbH
Product description | VLS 3132 H | 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 (in operating unit)
5 Oil tank (in operating unit)
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:
R
Rotary reversing switch is released.
R
Upper limit value is reached.
u
Lowering.
The lifting platform moves down as long as the rota-
ry reversing switch is pressed to the left. Movement
is stopped in the following cases:
R
Rotary reversing switch is released.
R
"Foot protection" safety level (300 mm) is
reached.
R
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 autho-
rized service agent with appropriate certification.
¶
Always use genuine replacement parts. The installati-
on 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 rever-
sing switch.
Deadman con-
trol
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 re-
versing switch to "lowering" again. A warning
signal sounds and the lifting platform conti-
nues to move downward until the lower end
position is reached.
Synchronization
control
The synchronization of the two scissor me-
chanisms is ensured electronically by a light
barrier (optional) as well as by means of a
dual-redundant hydraulic system.
Overload pro-
tection for drive
motor
The drive motor is protected by a tempera-
ture sensor. Following an overload, the lifting
platform can be operated again after a coo-
ling time of 10 minutes.
Tab. 2: Safety features