Bunn SRU User Guide

Page 13

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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.

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 - Disconnect the brewer from the power 

source before the removal of any panel or the replace-

ment of any component.
 

The control thermostat, limit thermostat, pump, 

solenoid valve, liquid level probe and tank heater are 

accessible by removal of  the swing spout, front cupola 

cover, rear cupola cover and the cupola.

 

Disconnect the swing spout nut from the swing 

spout base fitting. Remove swing spout.

 

Remove the four #8-3 screws, two on each side, 

securing the side covers to the cupola.

 

Slip cupola off of the component bracket.

 

The on/off switch, selector switch, start switch, 

timer, contactor and liquid level control board are ac-

cessible by removal of the front lower panel.

 

Remove the four #8-3 screws securing the front 

access panel to the base.

 

The circuit breaker, fuse and fuse holder are ac-

cessible by removal of the rear utility cover.

 

Remove the six #8-3 screws securing the rear 

utility cover to the housing.

FIG. 1 COMPONENT ACCESS

P053.5

Circuit Breaker  .....................................................14 

Contactor ..............................................................15

Control Thermostat ...............................................17

Fuse and Fuse Holder  ...........................................18

Limit Thermostat ...................................................19

Liquid Level Board and Level Probe  .................... 0

ON/OFF Switch ......................................................

Pump ....................................................................3

Selector Switch (Half Batch) .................................4

Solenoid  ...............................................................5

Start Switch (Brew) ...............................................6

Tank Heater ...........................................................8

Thermal Cut-off  ................................................... 9

Timer (Early Models).............................................30

Digital Brew Timer (Late Models) ..........................3

Wiring Diagrams ...................................... 34 thru 36

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