Operating instructions
BA_M4301_EN
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1.11.2
Working place
The working place is designed in front of the lifting module.
Figure 4: working place
1.11.3
Behaviour in an emergency
In emergencies the product may not be operated.
1.11.4
Lifting
The stroke movement is produced by the internal, hermetically-
sealed, hydraulic lifting jack with foot pedal with oil being
pumped by means of a piston into a plunger cylinder.
To lift the top plate, the foot pedal has to be depressed by
approx. 40° several times. The pedal returns to its off-position
by means of a return spring.
1.11.5
Lowering
To lower the top plate, the foot pedal has to be pressed up-
wards by approx. 10°. Thereby the oil returns due to the weight
of the user's load from the plunger cylinder into the reservoir,
the top plate lowers.
1.12
Maintenance
1.12.1
Plan for maintenance
Maintenance works
Interval
by...
Cleaning, visual check of
the lifting module and in-
spection of the guide unit
daily
operator
Control of the fixing screws,
retighten if required.
Control of the guide unit
half-yearly
checks
expert
Check smooth running with
little load over the entire
stroke range
yearly
expert
Check smooth running with
load over the entire stroke
range
yearly
expert
Check the check valve of
the internal lifting jack with
load
yearly
expert
Revision by the manufac-
turer (recommendation)
after 50,000
cycles (lifting
and lowering)
ROEMHELD
service staff
Repair
in case of
damages
ROEMHELD
service staff
Note
Pay attention to the qualification of the personnel.
1.12.2
Cleaning
WARNING
Danger of injury due to a lifting or lowering movement!
•
Do not reach into the stroke area during the lifting or lower-
ing movement.
The following cleaning works have to be effected daily at the
mechanical components.
1.
Clean with cleaning clothes or cleaning rags.
2. Slightly lubricate the metallic components (plates, guides,
etc.).
1.12.3
Daily checks
WARNING
Danger of injury due to a lifting or lowering movement!
•
Do not reach into the stroke area during the lifting or lower-
ing movement.
•
Visual check of the lifting module
•
Check the guide unit for damages and possible running
marks, repair if required.
1.12.4
Half-yearly checks
•
Check all fixing screws of the lifting module, retighten if
required.
•
Check all cable fixings and fittings, retighten if required.
•
Check the wear of the guide unit based on the guiding
clearance. If the clearance exceeds 0.5 mm, the guiding
elements have to be exchanged. (See chapter repair).
1.12.5
Yearly checks
To maintain the product in a safe condition and ready for op-
eration, the function safety of the internal lifting jack has to be
checked annually by an expert (see maintenance schedule).
1.12.6
Check smooth running of the product with little
load over the entire stroke range
CAUTION
Smooth running of the product!
If smooth running of the product does not work perfectly, even if
only partial stroke ranges are affected, the product must no
longer be used.
•
Observe the checking intervals.
•
Press the foot pedal upwards until the top plate is com-
pletely lowered.
•
Fix the test weight at the top plate (10% of the nominal
load).
•
Depress the foot pedal several times until the top plate is
completely lifted.
•
Press the foot pedal upwards until the top plate is com-
pletely lowered.