BG80 USE AND MAINTENANCE BOOKLET
Rev.1 of 23/04/2013 of BG80 uk agg2013 Page 23 of 40
Read the warnings in Paragraph 8.3 before performing these operations.
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MAINTENANCE WORKS BASED ON DEGREE OF USAGE
All moving parts of the mixer are subject to wear, the degree of which depends on the operating time, the
operating conditions and the degree of stress to which they are subjected.
The reducers have been treated using a so-called "long life" lubricant meaning that they will not require an oil
change
during their life span. If topping up, use
SHELL OMALA S4 WE 320
or equivalent.
The mechanical seal, together with the motor shaft bearing and the transmission oil (42 litres of SAE80-W90
oil) must be replaced every 40,000 operating hours.
The lifespan of the rubber parts of the expansion joint is variable and depends on the workload of the machine
and its exposure to atmospheric agents.
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ORDINARY MAINTENANCE
The propeller wear depends on the operating time and the quality of the product being mixed.
If the absorbed current is clearly less than the maximum nominal load, then the worn propeller should be
replaced. The M30 self-locking fixing nuts should also be replaced. When performing replacement operations,
check that the assembly surfaces are clean.
All maintenance operations performed must be properly documented.
(see the documentation relating to maintenance and repair operations).
Before carrying out any maintenance on the mixer and its component parts, disconnect the
dedicated switches (to the mixer and any other parts) and ensure that these cannot be accidentally
reconnected.
Put up a warning sign!
Follow the instructions relating to the safety regulations in Chapter 2, as well those relating to installing the
mixer in Chapter 8, extremely carefully.
There is a risk of explosion caused by overheating of the intermediate and lower bearings, resulting
from insufficient lubrication.
When performing repair or maintenance operations, reduce the level of contents in the tank as
necessary (particularly when carrying out maintenance on wall-mounted mixers).
Warning! In areas with potentially explosive atmospheres, it is absolutely prohibited to:
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Perform any repair or maintenance operations,
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Introduce any flammable source (e.g. naked flames, heat sources, equipment without arc flash protection,
non-explosion-proof electrical devices).
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Carry out welding operations, or machining operations that may generate flames or sparks.
ONLY use spark-proof tools
