BG80 USE AND MAINTENANCE BOOKLET
Rev.1 of 23/04/2013 of BG80 uk agg2013 Page 16 of 40
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The mixer must be kept free from snow and ice.
There is a risk of explosion caused by overheating of the intermediate and lower bearings, resulting
from insufficient lubrication.
During mixing, beware of any unusual noises; these may be caused by insufficient lubrication, loose
parts or faults in the motor, the gearbox, the bearings or the crankshaft, etc.
The presence of foreign bodies such as cords, ropes and plastic ribbons may cause the mixing
propeller to become unbalanced and, consequently, may cause damage to the bearings and to the
entire machine.
Such foreign bodies may also damage to the mechanical seal.
On rare occasions, if the equipment is installed in a fixed location, it is possible that local corrosion of the
material may occur.
This phenomenon is generally caused by stray currents (displacement of potential, improper grounding) or
electrochemical reactions (significant acidification of the co-ferments and wet waste, often at temperatures
exc45°C).
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INTENDED USE
The equipment is to be used exclusively for mixing in Biogas digesters, in the locations specified in this
manual: wall and/or ceiling application.
All other uses are prohibited.
Any other use must be authorised and certified by the manufacturer.
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VARIATIONS OF INTENDED USE
There are no present variations of intended use.
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STANDARD OPERATION
Depending on the type of application chosen, the mixer is equipped with a frame for installation on the ceiling
or on the wall.
Normally, the arm inclines horizontally to the left in relation to the wall of the tank, upon request a version with
the arm inclined to the right can be provided.
The machine is equipped with a hydraulic device for the inclination of the mixing propeller.
A manual oil pump is usually supplied to operate the cylinder; this is fixed to the frame of the mixer, or located
near the machine. Upon request it is possible to fit the machine with a kit to operate the cylinder using an
electric hydraulic pump.
