Table Of Contents - Bunn Dual Service Manual

SERVICE
This section provides procedures for testing and
replacing various major components used in this
brewer should service become necessary. Refer to
Troubleshooting for assistance in determining the
cause of any problem. Illustrations shown are DUAL
brewers with SINGLE brewers similar except where
noted.
WARNING - Inspection, testing, and repair of electri-
cal equipment should be performed only by qualified
service personnel. The brewer should be unplugged
when servicing, except when electrical tests are re-
quired and the test procedure specifically states to
plug in the brewer.
COMPONENT ACCESS
WARNING - Unplug the brewer before the removal of
any panel or the replacement of any component.
All components are accessible by the removal of
the top cover, front access panel, warmer base plate
and/or server platform cover. The covers and panels
are attached with slotted head screws as follows:
SINGLE & SINGLE SH top cover
DUAL & DUAL SH top cover
SINGLE front access panel
SINGLE SH front access panel
DUAL front access panel
DUAL SH front access panel
SINGLE & DUAL warmer base
SINGLE SH & DUAL SH server platform (4) #6-32
Brewer Selector Switch ........................................12
Bypass Valve ........................................................11
Circuit Breakers ....................................................14
Contactor Assembly .............................................15
Control Thermostat ..............................................17
Dispense Valve .....................................................18
Grinder Selector Switch .......................................20
Level Control Board and Level Probe ...................21
Limit Thermostat ..................................................23
Main Power Switch ..............................................45
ON/OFF Switch (Warmer) .....................................24
Overflow Protection Switch ..................................25
Receptacle ...........................................................26
Rectifiers ..............................................................26
Relay ....................................................................27
Solenoid ...............................................................33
Start Switches (Brew) ..........................................35
Tank Heaters ........................................................36
Timers (Early Models) ..........................................37
Digital Timer (Late Models) ..................................40
Transformers........................................................42
Warmer Elements.................................................44
Wiring Diagrams ..................................................46
(1) #4-40
(4) #4-40
(4) #6-32
(8) #6-32
(5) #6-32
(11) #6-32
(4) #6-32
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Contents
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