Scotsman RS100 - Manual (Page 18)

ELECTRICAL SEQUENCE
Refer to the wiring diagram.
Ice Vending:
Ice is dispensed as long as the ice vend lever or
push button is pushed, or until the hopper is empty
of ice.
••
When the ice vend lever or push button is
pushed, the vend switch closes, and makes a
circuit to the coil of relay A.
••
When relay A is energized, relay A’s contacts
6-9 and 7-4 close. Relay A’s contacts 7-1 open.
••
When relay A’s contacts 6-9 close, they make a
circuit to the door solenoid, which opens the ice
door.
••
When relay A’s contacts 7-4 close, they make a
circuit to the coil of relay B.
••
When relay A’s contacts 7-1 open, the circuit to
the timer is opened.
••
When relay B’s coil is energized, it closes a
circuit to the gearmotor, and the motor turns the
rotor.
Stand By:
••
Relay A’s contacts 7-1 are closed and make a
circuit to the timer.
••
The timer is energized when the unit is not
dispensing. The timer switch will close for a few
seconds every two hours.
••
When the timer switch is closed, it makes a
circuit to relay B’s coil.
••
When relay B is energized, it powers the
gearmotor, and the rotor is turned.
Soda Dispensing
Soda beverages are dispensed as long as the
valve levers or push buttons are held in, and there
is CO
2
and syrup.
••
The key switch is closed, the circuit to all of the
valves is enabled.
••
When a valve lever or push button is pushed in,
the valve switch will close, making a circuit to
the coils of the valve which opens it.
RS100 and RS150
October 1993
Page 18