GREASE DUCTS: LIFA Combi Cleaner brushing machines may be used for grease duct
cleaning. Please ask us more about our grease removal concept!
cleaned.
Nylon grease / Tynex brushes
are meant mainly for grease exhaust
duct cleaning
.
•
If the purpose is to spray coating or
disinfectant into the duct at same time,
place a compressed air or low-pressure
air sprayer into the machine depending
on the purpose of use. Choose a
correct nozzle (check the accessory list).
•
Make sure that the working area is
cleared and there are no extra people.
•
Ensure that all the employees
performing the work have adequate
protective equipment
.
•
Make sure that there is enough low
pressure in the ductwork and that LIFA
HepaClean or LIFA AirClean negative
pressure unit (NPU) is installed correctly.
The brushed off debris is removed by
sucking it to the negative pressure unit.
•
Connect the compressed air into
the machine. Before connecting
the compressed air, check that the
compressed air tab is off and air valves
are in the centre position.
•
Place the brush
inside the ventilation
duct
that is going to be cleaned.
•
When the operator, who is feeding the
shaft into the duct gives a permission
to start rotation, the other worker at
brushing machine turns the operation
valve. This is done by opening the
compressed air tab first and then the
compressed air valve can be turned
in to the other side, depending on
the rotating direction. The valve of the
compressed air tab adjusts the rotating
speed. In the fully open position the
rotating speed of the brush is the
fastest possible.
•
When the shaft is being fed to the duct
sharp angles and screws etc. that can
damage the shaft must be beware of
.
•
Adjust the rotating speed of the
brush. Note that when cleaning “soft”
internally insulated ducts the rotating
speed should be much lower than in
normal ducts. Too high rotation speed
may damage the ventilation duct.
•
The brush can be rotated to clockwise
and counter clockwise. Use both
rotating directions to achieve the best
cleaning result. In rectangular ducts, it
may be required to clean one side first
(with rotating the brush in one direction
only) and after that another side.
•
Feed the shaft evenly into the duct
without excessive force. The use of
excessive force may harm the duct,
machine or brush and influence on the
cleaning result. Always insert the shaft
gently and smoothly into the ductwork,
to prevent the brush from ‘jumping’ and
leaving unclean spots into the duct.
•
It is also advised to use specially
designed centering device and/or shaft
holder by LIFA in big ducts and/or when
full rotation speed is being used.
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