13
CHECKING OPERATION
THE MACHINE DOES NOT CLEAN WELL, VIBRATES OR OSCILLATES
Check the condition of the abrasive pad.
If the machine has been resting too long on the abrasive pad the pad may
have been permanently deformed. This will cause the machine to vibrate. If
the pad is ruined or worn then it must be replaced with a new pad.
To replace the pad consult the paragraphs: "REMOVING THE PAD" and
"INSTALLING THE PAD".
THE MACHINE STOPS WHEN IT IS AT WORK
The machine has an amperometric safety switch located behind the handlebar
that cuts off power to the brush motor whenever a predetermined load is
exceeded. To give current back to the motor you must press the push-button.
If the switch continues to cut off power then you must call your nearest
COMAC service center.
MOTOR SIGNAL LAMP ON
The machine has a device that checks the state of wear of the motor brushes.
The motor brushes must be replaced when the red signal lamp turns on (see
the figure). This procedure must be done by qualified personnel from a
COMAC service center.
WARNING! Ask for service from a COMAC service center
whenever you encounter any other malfunction.
