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DOUGH
MIXER IRIS
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20
FAULTS PROBABLE CAUSES POSSIBLE REMEDIES
The machine fails to
automatically switch from
the first to the second
speed.
The mains voltage is different
from that of the machine.
The second speed timer (3
Fig.7) is in the neutral position.
Check the mains voltage.
Make sure that the timer is in the
correct position (3 Fig. 7).
The machine is very noisy
and the protecting thermic
relays often stop it from
operating.
The machine may be powered
by two phases instead of
three.
Check the positions of the
magnetothermic switches (Fig. 10)
and the power cable connections.
When the main switch is
turned on (20 Fig. 1), the
indicator light (5 Fig. 1) fails
to come on and the
machine is not powered.
The wires in the mains plug
have detached.
The mains circuit-breaker is
broken.
Check the mains connections.
Replace the main circuit-breaker.
The machine fails to
operate when the START
button is pressed.
The button is broken.
The timers (1 and 3 Fig. 7) are
in the zero position.
The protective grille (4 Fig. 1)
is open.
The protective grille limit
switch is not positioned
correctly or is defective.
The protective
magnetothernmic switches
(Fig. 10) have tripped or are
faulty.
The stop button (2 Fig. 7) is in
the blocked position or is
defective.
Replace the START button.
Enter the operating values in the
timers.
Close the protective grille.
Check the grille limit switches.
Consult the relative spare parts
table for its position.
Position the magnetothermic
switches correctly or replace them if
necessary. Replace the protective
fuses.
Release the emergency button or
replace the contacts.
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