Rev 00.00
Page 21 of 32
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MACHINE MAINTENANCE
Par
Description
1
Replacing the filters
The filter lifecycle and interval for the replacement of clogged filters may vary
according to the type of use.
There are many variables to be taken into account, such as:
•
material to be welded (every material and alloy produces different
fumes/microparticulate);
•
type of welding (each welding method behaves differently, mig, tig,
electrode, etc.);
•
elements in contact with the equipment (for example oil, fat, paint,
etc. make the fumes generated more “aggressive”).
When a filter is clogged it is signalled by a special indicator light on the
control board; The light refers to a differential pressure switch housed inside
the electrical panel.
To replace the filters it is necessary to use the special triangular key (Photo
4 - 1.1) which is supplied with the machine; the key opens the lock of the
filter inspection door.
The door gives access to the filtration section; the filters can be simply
removed by pulling them outwards one at a time.
It is important to take into account that it may be difficult to extract the
filtration section due to the gaskets along the perimeter of the filters. The
gaskets (which are pressurised) hermetically seal the entire filtration
section and guarantee that all the particulate extracted is filtered by the
whole section.
The filters must be extracted starting from the lower one which has a
frame to hold on to and pull; the other filters will then come out more
easily as they will no longer be pressurised.
It is recommended to replace all the filters in the machine at least once a year for maximum suction and
filtration efficiency.
Photo 4 - 1.1
A
B
C
Lock
MW 1900 WELDING FUME EXTRACTOR
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