NECTA SPA TECHNICAL MANUAL
“ Snakky “
Manual
Snakky
20
/ 23
Problem
(and/or indication on the
display)
Possible cause
Solution
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 is not positioned correctly
and the condenser cooling air does not have
sufficient space for adequate circulation.
The machine is installed in a bank of
machines without a sufficient distance from
the wall.
The amount of refrigerant is not sufficient
(After some time the display indicates the
message “probe failure” or “unit failure”, or
both)
The back of the vending machine can be
positioned right against the wall, but not in a
bank of machines, except when the right side is
kept free.
Check for small leaks using a special instrument
and detecting foam.
Restore the charge after eliminating the leak.
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 neon 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”
and does not allow the correct function 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
