CONCRETE MIXER MOD.: BB 180/250/350/430/ BB350 S / BB500
GB
Operating, maintenance, spare parts manual Rèv. 3 of 11/12/13
Page 17 di 40
THEREFORE, THE COMPANY SILLA CANNOT ACCEPT ANY RESPONSIBILITY, IF THE MACHINE
SHOULD BE USED BY THE OPERATOR FOR DIFFERENT USES THAN THOSE LISTED IN THIS INSTRUCTION
MANUAL OR THOSE NOT COMPLYING WITH THE OPERATING
INSTRUCTIONS.
4.4
Noise
The following table informs on:
- A-weighted sound pressure level at workstations (LpA).
- weighted sound power level emitted by the machinery
(LwA).
The values take into account the uncertainty equal to 3dB and were collected in
the following conditions:
Material being processed :
Sand maximum grain size 3mm, degree of
humidity between 4 and 10%.
Operating conditions :
Machine complete with all parts and ready to ship.
Load of the machine :
Equal to the output capacity indicated in the promotional material.
Observation period :
1 minute for each measurement.
Measuring instrument :
Sound-level meter
Delta Ohm s.r.l. model HD2010UC serial number 08052941513.
Calibration :
Centro SIT n°124 Delta Ohm s.r.l. n° certificate F0527_10 of 07/07/10.
Wind-shield :
Spherical, sponge.
In order to not increase the noise level, strictly follow these rules:
•
Clean and grease the machine elements according to the maintenance schedule;
•
Ensure the machine parts are not obstructed or damaged.
With this noise emission level the use of protective equipment like earmuffs, earplugs, etc. is mandatory.
These noise values are emission levels and not necessarily safe working levels. While there is a correlation between
the emission levels and the exposition levels, it cannot be used in a reliable way to evaluate whether there is or nor the need
for additional precautions. The factors affecting the worker’s real exposition level include the duration of the exposition, the
environmental characteristics, other emission sources like for example the number of adjacent machines and types of
machining. The single exposition levels may also differ from country to country. However, thanks to this information the user
of the machine can better evaluate the dangers and risks.
5.
INSTALLATION
5.1
Transport
The concrete mixers are delivered assembled, the wheels mounted and the
legs, for the French type version, in the lowest position. Thanks to their solidity and their shape the
machines are easy to handle and to stock without damages. The motor unit and the belt reduction system are
fully assembled on the machine, together with the protections of the belts, the gear and the electric control
board. The weight of the machine is stated on the EC plate; due to its considerable weight, the machine shall not be
manually handled. It shall be hoisted by means of a crane and hooked as shown in the figure. The model BB 500 can also be
hoisted by means of a fork lift, the forks to be inserted into the special housings on the crossbar of the frame.
Lift only 1
machine at a time!
For transportation from site to site, on truck or similar, bind the concrete mixer by means of opposed
belts and nail wedges to the wheels, so that it does not move during the transport.
Italy type
French type
Silenced
BB 500
The machine is delivered with the following accessories: -2 wheels; - 1 drawbar; - 1 series of keys;
Be careful during hoisting and handling the machine to prevent injury to persons and
damages to the machine. The hoisting means shall be dimensioned according to the
weight to be
hoisted
.
We specify the Prohibition of towing the machine on the road. The wheels are used for
handling inside the site (except for French type version and only in France).
Follow the safety instructions shown in chapter SAFETY PRECAUTIONS.
5.2
Placing and grounding.
Install the machine on flat and solid ground. Check the flatness of the ground
before installation by means of a water level (longitudinally and crosswise).
Make sure the ground is correctly dimensioned to support the weight of the machine. It must be self-
extinguishing and not combustible. If necessary, the ground may be provided with holes for screw anchors,
to fix the machine to the ground. The installation place shall be protected against atmospheric agents.
Next to the machine there must be a plug 3 P+T of 16A for the connection to the electric installation.
Concrete
mixer
Type of
motor
LpA
(dB)
LwA
(dB)
BB 180
Electric
83,3
97,4
BB 250
Electric
83,3
97,4
BB 350
Electric
83,3
97,4
BB 430
Electric
83,3
97,4
BB 500
Electric
83,3
97,4
BB 350S
Electric
68,1
80,7
