Bunn ST, SA TROUBLESHOOTING cont, Problem, Probable Cause, Remedy, Brewer is making unusal noises

Page 12

TROUBLESHOOTING (cont.)

 

 

PROBLEM

PROBABLE CAUSE

REMEDY

Brewer is making unusal noises

3. Water supply

(A) The brewer must be connected

(ST, STF, STA & STFA)(cont.)

 

to a cold water line.

 

 

(B) Water pressure to the brewer

 

 

must not exceed 90 psi (620 kPa).

 

 

Install a regulator if necessary to

 

 

lower the working pressure to ap-

 

 

proximately 50 psi (345 kPa).

 

4. Tank heater

Remove and clean lime off the

 

 

tank heater. See page 20

Automatic refill will not operate

1. No water

Check plumbing

 

2. Strainer/flow control

A. Direction of arrow must be

 

 

pointing towards brewer.

 

 

B. Remove the strainer/flow con-

 

 

trol and check for obstructions.

 

 

Clean or replace.

 

3. Solenoid valve

Refer to Service - Solenoid Valve

 

 

for testing procedures. See page

 

 

18

 

4. Liquid level control board or

Refer to Service - Liquid level con-

 

level probe

trol board or level probe for test-

 

 

ing procedures. See page 26

 

5. Relay

Refer to Service - Relay for test-

 

 

ing procedures. See page 28

Beverage not staying hot in dis-

1. ON/OFF switch

Refer to Service - ON/OFF switch

penser

 

for testing procedures. See page

 

 

17

 

2. Warmer elements

Refer to Service - Warmer ele-

 

 

ments for testing procedures. See

 

 

page 29

Page 12

29251 052500

 

Image 12
Contents POST OFFICE BOX SPRINGFIELD, ILLINOIS FAXBUNN S,SA ST,STA STF,STFAWARRANTY USER NOTICESUSER NOTICES Continued #00656.0000#00882.0000 #02763.0000 #02765.0000 #02769.0000ELECTRICAL REQUIREMENTS PLUMBING REQUIREMENTSElectrical Hook-Up Models S & SAINITIAL SET-UP 4A. Models S & SA4B. Models ST, STA 4C. Models STF & STFACLEANING Models ST, STF, STA & STFA ON/OFF SWITCHSTART SWITCH OPERATING CONTROLSTROUBLESHOOTING TROUBLESHOOTING cont PROBLEMPROBABLE CAUSE REMEDYTROUBLESHOOTING cont PROBLEM Dripping from sprayhead Beverage overflows dispenser cont Weak beverage Brewer is making unusal noises SERVICE COMPONENT ACCESSContents SERVICE cont CONTROL THERMOSTATSERVICE cont CONTROL THERMOSTAT cont SERVICE cont LIMIT THERMOSTAT ON/OFF SWITCH Models ST, STA, STF & STFA FIG. 8 SOLENOID START SWITCH Models ST, STA, STF & STFA SERVICE cont TANK HEATER SERVICE cont TANK HEATER Cont FIG. 14 BREW TIMER SERVICE cont BREW TIMER Early Modelscont DIGITAL BREW TIMER Late Models FIG. 16 DIGITAL BREW TIMERSERVICE cont DIGITAL BREW TIMER Late Modelscont LIQUID LEVEL CONTROL BOARD Models STF & STFA STFACont SERVICE cont TIMER RELAY Models STF & STFA SERVICE cont WARMER ELEMENTS SERVICE cont THERMAL CUT-OFFModels SA, STA & STFA Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251Page 29251