35
•
The correct assembly of filters and seals.
•
The correct assembly of electrical connections.
•
That there are no objects or tools inside the air filter.
•
Check through the suction mouth that the direction of rotation of the air filter rotor corresponds to that
indicated by the arrow-label (the rotor must rotate in a clockwise direction).
•
Reassemble and secure the front lid inserting the two safety pins into the hooks.
•
Disconnect the air filter from the machine tool. To remove and lift it up use the apposite eyebolt. Place the air filter
on a workbench.
•
Remove the two safety pins mounted on the hooks of the front lid.
•
Release and remove the front lid.
•
Release and remove the rear lid.
•
Unscrew the blocking screws of the rotor.
•
Using the special extractor remove the rotor from the motor shaft.
•
Loosen the 4 screws, which fix the motor to the support and remove the motor.
•
Unscrew the 4 nuts and the eyebolt and remove the 5 screws securing the support to the air filter shell.
•
Extract the support from the shell.
To remount the air filter undertake the dismantling operations in reverse order using new safety pins, seals, washer and self-
blocking nuts.
It is also advisable to block the threads of the bolts connecting the motor support to the shell using thread-blocking
substance "
Arexons sistem forte 52A70"
or an equivalent product.
6.4.2. Motor maintenance
At regular intervals and, in any case, during normal maintenance of other components of the air filter, it is advisable to
regularly check that the motor shaft rotates freely and does not produce anomalous sounds.
Anomalous noises coming from the electric motor are usually an indication that the ball bearings are worn. In this case
replace them following the instructions provided below.
•
•
On reassembly of the bearings and the sealing ring, avoid using inadequate tools which may damage these
components.
•
On reassembling the motor install all components in their original and correct position.
•
At the end of reassembly check that the shaft rotates freely and that the new bearings installed do not make any
noise.
Note
The dismantling operations indicated may vary according to the type of electric motor mounted on the air filter. The
instructions provided below is only a general indication of the recommended dismantling order of the electric motor
components.
•
Dismantle the electric motor from the air filter, see paragraph
6.4.1
•
Remove the tab from the electric motor shaft.
•
Remove the fixture screws of the fan-cover and the cooling fan
•
Loosen the 4 or 8 closure screws of the electric motor cover.
•
If the motor has a rear or front bearing, unscrew the two blocking screws.
•
With the aid of a plastic mallet, remove the front and rear covering. Pay particular attention to the positioning of the
pre-load washers mounted in the coverings.
•
Remove the electric motor shaft.
•
Dismantle the bearings using a special extractor.
•
Dismantle the oil-protection bearings using a special extractor
For reassembly undertake the operations as indicated above in reverse order replacing all worn parts.
EN
