Polyvend ULTRA VENDOR 32, Service Manual

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ELECTRICAL SERVICE SECTION
M O D E S OF OPERATION
The system will operate in one of two modes, sales or service. On power up (after com-
pleting configuration), the machine is in the sales mode. Service mode may be selected
by pressing the mode switch mounted on the control board. The system will return to the
sales mode if the mode switch is pressed or after 25 seconds of no service mode activity.
S A L E S MODE
In the sales mode, the control board will control the dispensing of products according to
customer credit and selection inputs. The control board will communicate with the coin
mechanism and dollar bill validator (if installed); so, as credit is entered it will be shown
on the digital display. If there is inadequate change available, the coin mechanism will
indicate that an exact change situation exists and the control board will illuminate
(continuously) the “EXACT CHANGE” L.E.D.
When a customer makes a selection on the key pad, buttons A thru D and (within 5
seconds) numbers 0 thru 9, the accumulated credit will be compared to the price set for
this selection and if the credit is equal to or exceeds the set price, the corresponding
motor will be energized. If the vend is successful, the price will be deducted from the
credit value and the change returned.
The vend will be considered unsuccessful if the motor does not receive sufficient current
or fails to reach the home position within six (6) seconds. The vend will not be attempted
if the motor has already been detected as failed or if the selection made is not in the
configuration of the machine. In any case, credit will not be deducted and the “MAKE
ALTERNATE SELECTION” L.E.D. will flash for 3 seconds or until a new selection is
made.
If there is insufficient credit for the selection made, the “CHECK PRICE” L.E.D. will
flash for 3 seconds or until more money is inserted or another keypad entry is made.
If power should fail during a vend, the credit will be lost and the selected motor will not
be re-energized when power returns, thus the next vend of this motor may be shorter than
normal.
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