CONCRETE MIXER MOD.: PO 500
GB
Operating maintenance, spare parts manual Rèv. 3 del 12/10/18
Pagina 16 di 40
3.
GENERAL PRECAUTIONS
- The operating safety of the machine is only granted for the functions
listed in this instruction manual.
SILLA
cannot accept any responsibility, if the machine should be used for
different uses than those listed in this manual or those, which do not comply with the operating instructions.
- SILLA
cannot accept any responsibility for safety, liability and performances of the machine, if the precautions
and the instructions of this instruction manual, especially referred to installation, use, adjustments, maintenance
and dismantling are disregarded.
The operating safety is only guaranteed for the functions and the materials listed in this instruction manual.
SILLA
cannot
accept any responsibility, if the machine is used for other purposes than those stated in this manual and which do not comply
with the operating instructions. For all repairs, please refer to the After-Sales Service authorised by the supplier of the
machine. The user of the machine is the only responsible for its good and safe operation, if the machine was not repaired or
maintained by the specialized or authorised personnel.
For special maintenance and repairs use only original spare parts. For all repairs, please refer to the After-Sales Service
authorised by the supplier of the machine. The user of the machine is the only responsible for its good and safe operation, i f
the machine was not repaired or maintained by the specialized or authorised personnel. Before carrying out all these
operations, ensure the current supply is cut off. All the operators using the machine shall be trained on its correct use, the
protection devices and the tools - accessories supplied with the machine.
The machine is delivered with the protection devices already installed and fixed. Check and maintain these protection devices
and the machine according to the maintenance schedule. The operator shall be cautious in using the machine when the drum
and the bucket are moving and when approaching with his hands, and particularly:
- DO NOT TURN ON THE MACHINE WITHOUT THE PROTECTION SHIELDS;
- DO NEVER REMOVE THE SHIELDS AND/OR PROTECTION NETS WHILE THE MACHINE IS RUNNING.
The electric installation shall comply with the standards CEI 64/8 and law 46/90; in particular make sure there are automatic
protection devices, which are connected to the grounding system. Ensure good lightening in the work area and around the
machine, in order to avoid shady areas, dangerous dazzling and stroboscopic effects. The Manufacturer cannot accept any
responsibility, if the machine is not correctly connected to the unipotential grounding system and if no protection device is
installed upstream the machine in order to ensure automatic cutoff, according to the prescriptions of above mentioned
standards. Before starting work, check the work area for any unauthorised persons or obstacles.
Dispose of all waste materials through specialised companies in accordance with current laws in the country of use. Materials
must be differentiated.
The operator shall wear appropriate clothing: work gloves, protective helmet, safety shoes, and respiratory protection. Do no t
wear any jewellery or clothing that can get caught or distract from the operation of the machine.
Before starting work and turning on the machine, CHECK:
- the work area (1000 mm all around the machine) for any persons or obstacles.
- ensure the electric cable is stretched and completely rolled out.
Follow the safety precautions, in particular:
- Turn off the machine before opening or cleaning it; ensure no one can turn it on by accident;
- Use the protective equipment (work gloves, ear muffs, safety shoes, respiratory protection) during use, assembly and
maintenance of the machine; - Be cautious in approaching all the moving parts.
- Be cautious in approaching high voltage elements, hazard of electrocution (components like motors and switchboard).
Follow the safety instructions shown in chapter SAFETY PRECAUTIONS.
4.
CHARACTERISTICS
4.1
Description of the machine
The reversing drum mixers of series PO 500 are designed,
manufactured, tested and sold by the company Silla. These machines are designed for preparing and
mixing concrete: sand, pebble gravel, cement and water for use on construction sites only. The main
feature of these machines is their simple and rapid setting at work and safe use.
The machine is equipped with the following electric installation: electric plug, control panel with START and STOP commands,
electric connections, electric motor. In the diesel version the mixer is provided with: Diesel Engine, hydraulic pump, hydraulic
distributor, rack piston tilting the drum.
The power is transmitted from the motor to the drum by means of driving belts and reduction with pulley. The bucket moves
upwards and downwards by means of hydraulic commands. Tilting of drum is operated by a hydraulic distributor.
There are also some manual operations to be done by the operator. He must load the bucket with sand, pebble gravel, or
cement in the desired quantity, raise the bucket and unload the materials into the drum, positioned in loading position.
Successively, pour in the water from the water tank placed on the top of the frame and move the skip to the ground. Unload
the mixed concrete in a crane bucket or similar and tilting the drum with the hydraulic distributor.
The mixers are made of:
machine frame with retractable legs
water tank
axle with wheels and drawbar for displacements on construction site
hydraulic unit
Tilting drum with hydraulic distributor
control panel
bucket for introduction of aggregate
protection nets for accident prevention
