ADJUSTMENT
AND
INSPECTION
MAGNA 65-70-75-83
Doc. 10004978
Issued 27/03/2008
Rev. 00
P a g .
1 2 d i 19
Verify the
temperature
on the power stage of the chopper card.
The temperature should be the same of the environment one only
if the machine had been turned off for at least 1 hour and just
turned on.
If some anomalies are shown verify the thightness of the connections between the chopper card and the
traction wheel, the traction motor carbon brushes and the traction motor conditions. If the problem is not
solved the temperature probe of the card is fault and the entire card has to be replaced.
Verify the
battery voltage
.
Compare the battery voltage value read with a voltmeter with the
one read with the chopper console. The two values should be
equal.
If the difference between the values is greater than 0,5V, verify the supply cables, the battery poles conditions
and the connector that supply the chopper card.
Verify the
motor voltage
. The value you can read is the voltage
on the motor at the reading moment.
If the machine is steady the motor voltage has to be zero.
At maximun speed (and when the gear selector is on the “rabbit”)
the motor voltage has to be equal to VB (battery voltage).
If some anomaly occurs, verify the chopper-traction motor connections and the speed reduction microswitch
and selector.
Verify the
speed reductions
.
Turn the steering wheel until the front wheel has the axle parallel
with the machine axle. After done that verify that the message on
the console card is like the picture one.
Turn the steering wheel until you hear the cut back speed
microswitch switch. Verify that on the console the following
message appear.
In case some anomalies occur, verify the right functioning of the cutback speed microswitch and the right
wiring of it.
CUTBACK SPEED
B9=0V
B8=0V
CUTBACK SPEED
B9=0V
B8=VB
MOTOR VOLTAGE
VOLT = 37,6
MOTOR VOLTAGE
VOLT = 0
BATTERY
VOLT = 39.0
36V
TEMPERATURE
DEGREES = 17°C
