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TROUBLESHOOTING
EXCESSIVE FOAM PRODUCTION
Check that a low foam detergent has been used. If necessary, add a small
quantity of antifoam liquid to the recovery tank.
Remember that, when the floor is not very dirty, more foam is generated. In this
case the detergent solution should be more diluted.
THE MACHINE DOES NOT CLEAN WELL
1. Check the state of wear and tear of the brushes and, if necessary, replace
them. The cylindrical brush should be changed when the bristles are about
25mm long. This replacement operation must be carried out by a technician
of the Comac Technical Assistance Centre. The counter-rotating brushes
should be changed when the bristles are about 15mm long. To do this, refer
to “DISASSEMBLING THE BRUSHES”, then “ASSEMBLING THE
BRUSHES”. Working with over-worn brushes may cause damage to the
floor.
2. 2. Check the brush pressure is sufficient and, if necessary, increase it (see
“BRUSH PRESSURE” in the chapter “WORK”)
3. Use a different kind of brush to the one fitted as standard. For cleaning floors
where the dirt is particularly resistant, we recommend the use of special
brushes supplied upon request and according to needs (see “CHOOSING
AND USING THE BRUSHES”).
DIESEL MOTOR
For the maintenance and operating checks on the diesel motor, refer to the
relative manual
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