Specifications

Bunn-O-Matic Corporation
15
Accessing the Inside of the Brewer
The majority of service work to the ICB brewer will require the removal of either the front panel or the top panel. The
toppaneloftheSingleissecuredwith1atheadscrew,thetoppaneloftheTwinhastwoscrews.Thefrontpanelis
securedwitheither6or8atheadscrews,dependingontheheightofthemachine.
Machine Function and Operations
Control Board Assembly (CBA)
The CBA is the brain of the brewer. In the Digital Brewer Control (DBC
®
) system, the CBA is the single component
that contains all of the programming software, it interprets all the data it receives from the level and temperature sen-
sorsandactivatescomponentstofulllthosedemands.TheCBArespondstotheusersinputthroughthemem-
brane switch and activates and controls the brew cycle. The control board can receive data from Smart Funnels®
through a sensing coil on the front of the machine.
In a digital coffee brewer the CBA takes the place of the liquid level control board, the timer board, and the mechani-
cal thermostat. All of these components are combined into a single unit.
Filling System
Thellsystemmaintainsthelevelofwaterinthebrewer’stank.Anytimewaterisdrawnoffofthetankduringabrew
cycleorfromthehotwateroutlet,thellcircuitactivatestorellthetank.
Thellsystemconsistsof:
120VACor240VACsolenoidinletvalve•
Liquid Level Probe•
Waterenterstherearofthebrewerfromthesupplylineandrst
goes through a plastic strainer mounted in the combination inlet
valve.Fromtheinletvalvethewaterowsthroughthelltubing
into the bottom of the water tank.
The inlet valve is activated by the CBA anytime the brewer calls
forwater.Theinletvalveopensandallowswatertoow,under
linepressure,tothetankwherethesilicontubeconnectstoall
tube attached to the tank.
The CBA monitors the level of water in the tank through a low
voltage liquid level probe mounted to the top of the tank. The
CBAgroundsa2.5VACsignaltothetankthroughthewater.Ifit
looses this signal, the CBA will activate the inlet valve.
Heating System
The heating system consists of:
• Watertank
• TankHeater(s)
• Limitthermostats
• Thermistor
The heating circuit maintains the water in the tank at a preset temperature this ensures that the water is always ready
for brewing.
Inlet solenoid
Fill tube