NECTA SPA TECHNICAL MANUAL
“
SFERA
“
Manual
“ SFERA”
16 /
19
The display indicates the
message
“Motor failure n. XY
”
At machine start, an automatic test routine
checks the presence of trays and their
number, therefore a motor failure is not
indicated, as they are not activated. When a
selection is made a microswitch is activated,
which must close at the end of the cycle;
should this function not occur the motor
locks or continues running because of an
actuation card failure.
In this case a time-out is triggered to stop
the motor, placing it out of service.
Check that there are no interferences to
the motor rotation.
Check that the motor is efficiently running.
Check that the microswitch is efficiently
working.
Check that in fact there is not a time-out.
If the motor does not pick up at all, check
the electrical connection ensuring that a
24 V DC reaches the motors.
If all checks are OK replace the card, as
the actuation or the software may be
malfunctioning.
The display indicates the
message
“product finished”
This information can be displayed in the
version fitted with infrared sensors. And it
means that the barrier was not interrupted
during a selection due to two possible
causes: 1) end of product, 2) jammed
product
The software automatically tries to make
the product drop with small movements,
and if this fails the selection is blocked. In
this case the failure must be reset after
correcting the problem.
The software allows a new selection to be
made and the customer does not lose his
credit.
The display indicates a
number of
trays not
corresponding
to the real
situation
At machine start, an automatic test routine
checks the presence of trays and their
number, therefore if a tray is not indicated it
is because it is not electrically detected.
Check that the cables are correctly
connected.
Check that the cables are efficient.
The machine does not
start and the
display is
off
The vending machine is protected against
short-circuits with two line fuses (one on
each phase),
with fuses on the secondary winding and on
CPU board power supply (see wiring
diagram).
Check that the fuses are intact and if
necessary replace. First identify the cause
of the blown fuses.
Check the power supply cable.
The transformer’s functioning.
The refrigerated box
does
not cool down
and the
operating temperature is
not reached in spite of
being correctly set
The cooling unit sucks in air from the lower
section and expels it downwards through the
front grille. This route must be free.
Ensure that there are no objects in the lower
section of the vending machine.
Check that the pre-filter is not clogged.
The amount of refrigerant is not sufficient
The probe is interrupted or short-circuited, or
moved away from the correct position set at
the factory
(After some time the display indicates the
message “probe failure” or “unit failure”, or
both).
The vending machine can be positioned
against a wall,
but no objects can be positioned under the
vending machine base.
Check for small leaks using a special
instrument and detecting foam.
Restore the charge after eliminating the
leak.
Check that the NTC probe is positioned
and functioning correctly.
The internal lamps do
not
light
Switching on and off of the lamps can be
programmed; therefore check that such
option was not included in the programming.
Probable failure to the starter / ballast
Check the functioning of the flourescent
lamp, starter and ballast
Check the functioning of the relay card
(SOR) that controls the 230 V AC power
supply
Check in the special software program that
the time band setting is correct.
The display indicates the
message:
“programming”
The CPU and payment system compartment
door closure is monitored by a microswitch
that in the event of actuation with the door
open indicates
“Programming”
In this situation it is not possible to have
correct operation.
If the warning is with the door closed, check
the microswitch.
Check that microswitches are activated
correctly, check that cables are not
damaged or disconnected.
Replace the microswitches and/or the
cables
