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MACHINE REPAIR GUIDE
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Caution!
Anyone carrying out repairs on a machine incorrectly, resulting in injury to the user, is always liable under both civil and criminal law.
Repairs must always be carried out in accordance with the specifi cations provided in the use and maintenance manual, which must always be available with the machine.
Never make changes to the machine. Replacement of any component with another of diff erent features is also considered a change.
Always use original spare parts (supplied by the manufacturer or its sales network).
If in doubt, always contact the authorised technical service centre.
Dismantling:
Always use suitable tools for dismantling the machine. Never change the assembly/fi xing/latching features of the machine components.
Labels:
Never cover the original labels containing safety information with your own labels.
Never replace the nameplate containing the manufacturer's name, the identifi cation data and the serial number.
When necessary, replace the safety labels with new ones.
Switches:
Switches must only be replaced with other genuine switches or models specifi cally referred to in the manuals with the same features and rated data.
Some switches may be identifi ed as safety devices; when testing, always check that they are operating correctly.
Drive motor:
The drive motor(s) must only be replaced with another genuine part. A similar but not identical main motor can modify the machine characteristics with regard to performance, safety and
EMC (ELECTROMAGNETIC COMPATIBILITY).
When necessary, replace the EMC safety devices with other genuine parts having the same characteristics and rated data.
Always check the condition of the transmission belts and replace them when necessary.
Make adjustments in accordance with the instructions in this manual.
Suction:
The suction motor must only be replaced with another genuine part. A similar but not identical suction motor may modify the machine characteristics with regard to performance, safety
and EMC.
When available, replace the carbons of the electric motors with other genuine parts having the same characteristics.
After replacing the suction motor, it may also be necessary to replace the sealing gaskets; check their condition and if necessary replace them with genuine spare parts.
Never change the size of the air ducts or the motor ventilation grilles/slits.
Main brush:
Replace the brush with genuine spare parts only.
After fi tting the brush, check its alignment with the fl oor.
Check the working order of the transmission.
If necessary, adjust the drive mechanisms, etc., following the instructions provided in this manual.
Fit the brush back in place then ensure that it is properly fi xed to the hubs and rotates in its seat.
Test the machine after replacing the brush.
Do not modify the brush size.
Make adjustments in accordance with the instructions in this manual.
Side brush:
Replace the side brushes with genuine spare parts.
If necessary, replace the brush drive motors with genuine spare parts.
Do not replace the brush or brushes with others of diff erent sizes.
If necessary, adjust the drive mechanisms, etc., following the instructions provided in this manual.
Make adjustments in accordance with the instructions in this manual.
Safety devices:
The safety devices installed are specifi ed in this use and maintenance manual; if in doubt, do not hesitate to contact the authorised technical service centre. During testing, always check
their working order.
Replace the safety devices (when necessary) with genuine spare parts only.
It is appropriate to keep documentation of the replaced safety devices (conformity certifi cate, testing certifi cate, etc.).
Wiring:
Do not make changes to the gauge, colour, type or characteristics of cables. Always use genuine spare parts.
During testing, always check the continuity values of the earth circuit, the insulation and leakage current and the eff ectiveness of the insulating devices.
Filters:
Always check the working order of the fi lters and replace them if necessary with genuine spare parts.
Check the effi ciency of the fi lter-shaker device.
If the machine is equipped with fi lter fouling warning light, always check its working order and replace it if necessary.
Never make changes to the machine fi ltering system.
Accessories:
Never fi t any accessory not specifi cally referred to in the manuals. The optional accessories are always specifi ed by the manufacturer. Install genuine accessories only, where envisaged.
If non-genuine accessories are already installed on the machine, inform the customer of this in writing (keep a copy).
Assembly:
Always use suitable tools when assembling the machine. Never change the assembly/fi xing/closure characteristics of the machine components.
Always check that screws are tightened with a torque wrench.
Testing:
Always test the machine in relation to the maintenance/repairs carried out.
Always keep evidence (documentation) of the testing performed (for at least 10 years).
Documentation:
Whenever possible, document every operation performed.
Keep documentation (delivery notes, invoices, certifi cates, etc.) relating to the repair/maintenance work done for a period of at least 10 years.
General information:
Always replace any damaged component which may aff ect the safety or correct operation of the machine.
If the component required is not available from the manufacturer or its authorised dealers, contact the authorised after-sales service for information on to how to proceed.
If you believe that the machine being repaired is not suffi ciently safe, do not carry out the repair and inform the customer (in a written statement) of the faults found. Always remember that
"repairing a machine always involves liability (under civil and criminal law) on the part of the person providing the service".
Before delivering the repaired machine to the customer, make sure (by testing) that the repair has been eff ective.
Always document the repair carried out (by means of test certifi cate, work record, delivery document) and keep it for a period of at least 10 years.
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