INSTRUCTIONS FOR USE
6 Micromax™ 17B–20B / 20DC–20DD — 909 5426 000(2)2005-03
WIRING DIAGRAMS
Wiring diagrams, for different optional equipment (Fig. K and
L).
CH1 Battery charger
C1 Battery connector
EB1 Electronic board (CFBA430)
EB2 LED board (CFBALED)
EB3 Drive electronic board
ES1 Brush electromagnetic switch
ES2 Suction electromagnetic switch
EV1 Water solenoid valve
F1 Brush fuse (50A)
F2 Suction fuse (40A)
F3 Water valve and electronic fuse (5A)
F4 Drive fuse (30A)
IS1 Negative insulator
IS2 Positive insulator
K1 Ignition switch
M1 Brush motor
M2 Suction motor
M3 Drive motor
R1 Drive speed governor
SW1 Brush switch
SW2 Suction switch
SW3 Drive control microswitch
SW4 Drive motor microswitch
Color code
BK Black
BU Blue
BN Brown
GN Green
GY Grey
OG Orange
PK Pink
RD Red
VT Violet
WH White
YE Yellow
ELECTRICAL PROTECTIONS
Fuses
Brush safety fuse (50 A): (1, Fig. E)
Suction fuse (40 A): (2, Fig. E)
Solenoid valve fuse (5 A): (3, Fig. E)
Drive fuse (30 A): (8, Fig. E) (*)
Electronic board protection fuse (2A): (9, Fig. E) (*)
(*) “20DD-20DC” versions only
Brush motor overload protection electronic system
This system works when the brush motor is overloaded.
Its operation is signaled by the three warning lights (2, 3, 4,
Fig. B) flashing at the same time; after a few seconds, the
brush motor stops.
In order to restart the motor, it is necessary to eliminate the
cause of the overload, which can be:
– the brush is too much pressed on the floor;
– the brush is blocked by floor roughness or by a foreign
body;
– the brush rotation is slowed down by dirt, ropes or rags
around its rotation shaft;
– the friction between brush and floor is excessive
[increase the solution quantity with the appropriate
control lever (7, Fig. B)].
Once the overload cause has been eliminated, reset the
system as indicated below:
– (20B versions) stop the machine by turning switches (5
and 6, Fig. B) to "0";
– (20DD versions) stop the machine by turning the ignition
key (9, Fig. B) to "0".
After that, the machine can be restarted again, as described
in the related chapter.
Drive motor overload protection electronic system
(20DD-20DC versions only)
This system works when the drive motor is overloaded.
Its operation is signaled by the drive motor stopping.
After a while, the system can be reset by stopping the
machine and turning the ignition key (9, Fig. B) to "0".
After that, the machine can be restarted again, as described
in the related chapter.
ACCESSORIES/OPTIONS
In addition to the standard components, the machine can be
equipped with the following accessories/options, according to
the machine specific use:
1. Gel batteries
2. Brushes of different materials
3. Pads of different materials
4. Oil-proof squeegee blades
5. Splash-guard
6. Natural rubber blades
For further information concerning the optional accessories
apply to an authorized Retailer.
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