Bunn Axiom Series Technical Training

AXIOM
®
Training Manual
16
Accessing the Inside of the Brewer
The majority of service work done on the AXIOM
®
brewer will require the service technician to access the inside of
the unit. The brewer has two removable panels, the top panel and front panel. Depending on the service required
one or both of these panels may need to be removed.
To work safely the power should disconnected prior to removing the panels. Once removed the brewer may be re-
connected to troubleshoot the machine.
Top Panel: The top panel is secured by one screw, to remove the panel remove the screw and while lifting the top
slightly from the front push lightly towards the rear you can then completely remove.
Front Panel: To remove the front panel, move the server and brew basket and set aside. Remove the four screws
holding the front panel on and slide panel out.
Machine Function and Operations
Main Control Board
The main control board is the brain of the brewer. In the
digital AXIOM
®
series brewer the control board is the single
component that contains all of the programming software, it
interprets all data it receives from the level and temperature
sensors and opens or closes various components to com-
plete a brew cycle.
In a digital brewer the main control board takes the place
of the liquid level board, timer board, and the mechanical
thermostat.
Filling System
Thellcircuitconsistsof
• 120VAC inlet solenoid
• 2 Fill probes (referred to as Short LP1 and Long LP2)
Thellsystemmaintainsthelevelofwaterinbrewtank.
Anytimewaterisdrawnfromthetankthellcircuitacti-
vatestorellthetank.
Water enters the brewer through the water supply line it
then enters the chassis thru a copper line that is attached
to the inlet solenoid. When the water enters the inlet
valveitmustrstowpastanemeshscreenhoused
within the valve, this mesh screen is designed to keep
large particles of foreign material from entering the valve.
The 120VAC inlet solenoid is activated by the control board anytime the brewer calls for water. The inlet solenoid is
energizedtoallowwatertoowunderlinepressure.Itthenentersthetankthroughasiliconehoseattachedatthe
base of the tank.
Inlet Solenoid
Fill Tube
Copper Line
Flow Control Body
Flow Control Washer
Strainer
Inlet Solenoid
Transformer
Tank Heater Relay

Bunn Axiom Series Specifications

General

Power	Varies by model (e.g., 1800-3000 watts)
Dimensions	14.5 x 9.5 x 11.5 inches
Weight	Varies by model
Features	Digital display, programmable settings, energy-saving mode, automatic warmer shut-off
Category	Coffee Maker
Model	Axiom Series
Capacity	10 cups
Voltage	120V
Material	Stainless steel