The following maintenance steps should be followed
to maximise optimal performance and reliability of the
Daily Inspection of Micro Filters
It is highly recommended that operators check dust
levels between the ﬁ lter sock platform and secondary
ﬁ lter on a daily basis. This will indicate the effective-
ness of the primary ﬁ lters. If there is dust building up in
this area, it
is more than likely due to one of the following reasons:
1. Small holes or perforations have developed in
primary ﬁ lters.
2. There is a problem with a seal in the primary
ﬁ lter/ﬁ lter sock mounting platform assembly.
If when inspected, it is found that there is dust building
up on the secondary ﬁ lter, removal of the primary ﬁ lters
and checking for small holes or perforations in the
ﬁ lters is recommended.
Usually, small holes will begin to develop around the
stitching of the ﬁ lter media. If small holes are located,
clean area around hole with either compressed air or
vacuum. Once area is clean, the hole can be repaired
with silicone sealant.
Generally speaking, with consistent use, the primary ﬁ l-
ters should be replaced approximately every 6 months.
This will maintain good suction levels and reduce inci-
dence of holes developing in the ﬁ lters.
The secondary ﬁ lter should be changed every 12
months. Made from a polyester ﬁ lter media, the sec-
ondary ﬁ lters can be washed out with water. Ensure
they are fully dry prior to re-installation.
On re-installation of the secondary ﬁ lter, ensure the
seal is ﬁ rmly pressed against the steel vacuum motor