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4.
To ensure a free flow of ingredient powder and granules it is essential that they are
kept completely dry. This is achieved by extracting steam from the mixing system
using an extract fan. The electrical supply for the LINEA extract fan is 24VDC and for
the COTI machines it is 110V AC.
Note: The fan runs continuously whilst the machine has power.
5.
Espresso machines: Coffee beans are stored in a bean container and are dispensed
into the CoEx® Brewer via a 110V AC grinder located under the bean container outlet.
The amount of beans dispensed from the container is controlled by the vending
machine controller and may be adjusted via timing constraints set in the Engineers
Program.
7.4 Mixing System
1.
The mixing system utilises 24V DC 13000 RPM motor assemblies and mixes ingredient
with hot water from the heater tank.
2.
The mixing units are front mounted and secured by a single fixing screw. For servicing
the complete unit can be quickly and easily removed.
7.5 Moving Dispense Head: COTI
1.
COTI machines are fitted with a moving dispense head mechanism. This allows for a
quicker and more direct cup drop and also helps to prevent cross contamination of
drinks. The head features two separate dispense positions depending upon the drink
being dispensed.
2.
The mechanism is operated by a 24V DC 48 RPM motor. The motor is connected to a
pinion which engages with a rack on the dispense arm. This mechanism is used to
move the dispense head backwards and forwards.
3.
A micro switch, fitted to the rear of the dispense head chassis detects the home
position (head withdrawn/not dispensing). An optical sensor is also fitted and this
works in conjunction with a decoder attached to the rack to determine the position of
the dispense head.
4.
A moulded dispense head mounted at the front of the unit connects the tubes from
the various mixing systems, brewers and hot water to separate dispense nozzles.
Note: Dispense pipe information is shown in Section 9.
7.6 Cup Dispense Unit: COTI
1.
Cups (either paper or plastic) are stored in tubes which are located above the cup
dispense unit. The unit incorporates a 24V DC, motor for indexing the turret over the
cup drop unit as required.
2.
The cups are separated and 'dropped' by a cup ring. The cup ring comprises of five
splitter cams operated by a 24V DC motor which is controlled by the vending machine
controller.
3.
The cup level is monitored by an electronic system. An infrared LED (cup sensor
transmitter) is positioned in the cup assembly above the cup splitter with an infrared
detector (cup sensor receiver) mounted directly opposite.
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