Service Manual 04/2010 Rev.B
53
Fig.65
Turn switch to “On”. Check that there is
continuity between terminals
L1,
L1,
L2,
L 2,
L3
and L 3 (Ω = 0 ~ 0,3) and discontinuity
between terminals
L1, L2, L3
and L1, L2, L3
(4.0).
If there is continuity the switch is in short
circuit and it must be replaced.
TO REPLACE THE SWITCH:
As the main switch must be removed to be
checked, its replacement only requires the
removing of the rear support #1 (Fig.66).
Install the rear support on the new main
switch.
Connect wires ends FIRMLY to the new
switch terminals as shown in the appropriate
electric diagram (3.0).
Fig.66
Install the switch on the electric box paying
attention to the direction of the spacer #1 (Fig.
67) and mount the yellow protection (Fig.64).
Fig.67
IMPORTANT!
AT THE END OF THE OPERATION CHECK THE
ROTATION WAY OF THE HYDRAULIC MOTOR:
IF IT IS WRONG REVERSE TWO SWITCH
WIRES ONLY.
5.3 CIRCUIT BREAKER Q2: CHECK
AND REPLACEMENT
: 30’
: Medium screwdriver, pliers, multimeter.
L : Defective power circuit breaker may cause
the following malfunction:
1. Turning the switch on the hydraulic motor
does not run at all.
2. Sometimes the breaker shuts off itself
suddenly when the machine is operating.
IMPORTANT!
BEFORE STARTING WITH ANY CONTROL
AND REPLACEMENT VERIFY IF THE
BREAKER IS CORRECTLY REGULATED
COMPARED TO MOTOR DATAS.
TO CHECK THE CIRCUIT BREAKER:
Turn the machine on.
MACHINE UNDER TENSION
DANGER OF ELECTRIC SHOCK
Select the multimeter in VAC. Check voltage
between terminals L1and T1, L2 and T2, L3
and T3 of the circuit breaker Q2.If it is not
correct the breaker must be replaced.
NOTE ONLY FOR CE PROVED MACHINES: If
the circuit breaker Q2 cannot be switched on,
check the following parts:
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