Service manual

VEND CYCLE
Several operations take place during the Vend Cycle: a purchase is made, the cam and bucket
rotate, product is dispensed and reloaded. The sequence of these operations change slightly
when the column’s depth setting is changed. With the Single Depth Setting, one purchase is
made and the bucket is reloaded, the Cam Sequence occurs once per bucket revolution. With
the Double Depth setting, two purchases are made before the Bucket is reloaded, the Cam
Sequence occurs twice per bucket revolution. With Triple depth setting, three purchases are
made.
PURCHASE SEQUENCE:
PS 1. Customer insert money.
PS 2. The Coinage Unit sends a signal energizing the Credit Relay. This creates a path of
power for the Selection Switch.
PS 3. Customer presses a Selection Button.
PS 4. The chosen Selection Switch closes, creating a path of power to energize a Vend
Motor.
PS 5. The Vend Motor turns the Bucket and Cam.
PS 6. Product is Immediately dispensed.
CAM SEQUENCE: (See Figure 14, Double depth Setting Pictured)
CS 1. As the Motor turns the Cam, the Switch falls into the low part of the cam. This interrupts
the power path to the Credit relay canceling credit.
CS 2. Simultaneously, the Motor Carrier Switch is lifted to the high part of the cam. This
provides an alternate path of power, to the Vend Motor.
CS 3. With the Cam still rotating, the Switch lifts back to the part of the Cam, (permitting
another purchase when it is required).
CS 4. The Motor Carrier Switch falls into the lower part of the Cam, cutting power to the Motor.
The Motor stops.
FIGURE 14
S-10