Malaguti DRAKON125 2022 Workshop Manual page 66

radiator is generally axial-flow fan, the air inlet is fan leaf end, the air outlet is motor end,
and the wind direction of inlet and outlet is in the same direction. The motor uses a 12V
DC motor, which drives the fan leaf to rotate to form the flow of wind and take away the
heat from the radiator.
2. Basic parameters
Fan output air volume ≥ 400m3 / h;
Motor speed (4500 ± 400）r/min；
Rated working current ≤ 4A;
Fan rotation direction: clockwise when viewed
from the motor output shaft.
3. Possible failures
Fan motor open circuit failure;
Fan motor short circuit failure;
The fan leaf interferes with the support, and the fan is noisy during operation;
The joint between fan leaf and motor shaft slips;
The bracket is broken.
Failure
phenomenon
The water
temperature has
given an alarm,
but the fan still
doesn't work
The fan keeps
working
Excessive fan
noise
Possible causes
Line break;
Open circuit failure of fan
switch;
Fan motor failure;
The fan page is stuck or
slipping.
Line short circuit;
Open circuit failure of fan
switch
The fan leaf interferes with the
bracket;
The fan leaf is loose or
broken;
The bracket is broken.
Solutions:
Connection repair;
Replace the fan switch;
Replace the fan motor;
Inspection and maintenance.
Maintenance exclusion;
Replace the fan switch
Inspection and maintenance;
Fastening or replacement;
Replace the bracket.