BG80 USE AND MAINTENANCE BOOKLET
Rev.1 of 23/04/2013 of BG80 uk agg2013 Page 25 of 40
Wear accident-prevention gear with the relevant PPE.
Only prepare the mixer in sufficiently well-lit conditions.
If assembly and installation operations are carried out in potentially explosive atmospheres, authorisation to
operate in areas at risk of explosion must first be requested from the officer in charge.
Do not enter, or approach the edge of, the digester tank if not sufficiently equipped to deal with the
fumes, and never do so alone
Do not perform repair, adjustment or maintenance operations when the machine is operating or when
it is connected to the power supply.
Do not damage or remove the protective equipment.
13) During use, adjustment or maintenance operations, avoid rubber parts of the machine (gaskets,
etc.) coming into contact with oil, grease or oil derivatives.
8) The machine should only be used when all protection is in place, following the instructions identified
in the above paragraphs in order to avoid contact with moving parts.
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GENERAL INSTRUCTIONS TO PREPARE THE SITE
The biogas mixer can be supplied with a frame for ceiling or wall mounted installation.
The different types of mixer installation have been specially designed to suit the range of location and work
conditions of the various Biogas plants, as well as the manufacturing characteristics of the digester and of the
tanks.
The technical design office, or the dealer or manufacturer, must check that the mixer is correctly positioned to
ensure optimal mixing and a suitable degree of homogenisation of the fermented substrate.
The potential need to access the site using mechanical lifting equipment must be taken into account when
choosing the location.
When installing the mixer, written authorisation must be obtained from the body responsible for
carrying out static load calculations in relation to the wall of the tank.
Doda is not responsible for any damage caused to tanks resulting from incorrect installation or use of the
mixer.
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INSTRUCTIONS TO PREPARE THE SITE FOR CEILING-MOUNTING
To mount the mixer, a 1,300 mm x 1,300 mm hole must be made in the ceiling.
This should generally be positioned 4 - 5 m from the point through which the raw materials are introduced, so
that the propeller range can uniformly homogenise the solid substances that have been introduced.
The position of the mixer must be chosen in light of the position of any other pre-existing mixers.
The thrust of the mixer does not usually need to be altered.
