Évaluations - 3, GPA: 3.3 ( )

Fabricant : Bunn Taille : 1.59 mb Nom Fichier : Langue d'enseignement:

The indication must be: a) 120 volts ac for two wire 120 volt models. b) 240 volts ac for two wire 240 volt models. c) 100 volts ac for two wire 100 volt models. 8. Disconnect the brewer from the power source. If voltage is present as described, reinstall the capillary tube into the tank to the line 4.5" above the bulb, the control thermostat is operating properly. If voltage is not present as described, replace the thermostat. Removal and Replacement: 1. Remove both wires from the control thermostat terminals. 2. Remove the thermostat capillary bulb by firmly pulling up on the capillary tube at the tank lid. This will disengage the grommet from the tank lid. 3. Remove the #8-32 screw holding the control thermostat to its bracket. 4. Slide the grommet to the line 4.5" above the bulb on the new capillary tube. 5. Insert the capillary bulb through the hole in the tank lid and press the grommet firmly and evenly so that the groove in the grommet fits into the tank lid. 6. Carefully bend the capillary tube so that the tube and bulb inside the tank are in a vertical position. NOTE – The capillary tube must be clear of any electrical termination and not kinked. 7. Fasten the new control thermostat to its bracket. 8. Refer to Fig. 9 when reconnecting the wires. 9. Adjust the control thermostat as required. BLK to Tank Heater BLU/BLK to Limit Thermostat P1280 FIG. 9 CONTROL THERMOSTAT TERMINALS 10145 072600 Page 20 SERVICE (cont.) DILUTION SOLENOID VALVE(S) FIG. 10 DILUTION SOLENOID VALVE(S) P2207.40 Location: Viewing the brewer from the rear the dilution solenoid for the T3 is mounted on the center of the solenoid mounting bracket, the T6 solenoids are mounted in the center and the right side of the mounting bracket. Test Procedure: 1. Disconnect the brewer from the power source. 2. T3 - With a voltmeter, check the voltage across the white/blue and white/violet wires on the dilution solenoid terminals when the ON/OFF switch is in the “ON” (left) position and the start switch is momentarily placed in the lower position. Connect the brewer to the power source. After the approximate setting on the delay dial, the indication must be: a) 120 volts ac for two wire 120 volt models. b) 240 volts ac for two wire 240 volt models. c) 100 volts ac for two wire 100 volt models, remain for the approximate setting on the dilution dial, and then return to its previous indication. T6 - With a voltmeter, check the voltage across the white/blue and yellow wires on the dilution solenoid terminals for the right reservoir and the white/blue and the brown/black for the left reservoir when the SELECTOR switch is in the “ON” (left for the left reservoir or right for the right reservoir) position and the start switch is momentarily placed in the lower position. Connect the brewer to the power source. After the approximate setting on the delay dial, the indication must be: a) 120 volts ac for two wire 120 volt models. b) 240 volts ac for two wire 240 volt models. c) 100 volts ac for two wire 100 volt models, remain for the approximate setting on the dilution dial, then return to its previous indication. If voltage is present as described, proceed to #4. If voltage is not present as described, refer to the Wiring Diagramsand check the wiring harness. 4. Remove both wires from the coil and check for continuity across the coil terminals. If continuity is present as described, reconnect the white/blue and white/violet wires and proceed to #5. If continuity is not present as described, replace the solenoid valve. 5. Check the solenoid valve for coil action. Connect the brewer to the power source, place the ON/OFF or SELECTOR switch in the “ON” (T3 left, T6 left or right) position and momentarily place the start switch in the lower position and release. Listen carefully after the approximate setting on the delay dial in the vicinity of the solenoid valve for a “clicking” sound as the coil magnet attracts and after the approximate setting on the dilution dial, repels the plunger. 6. Disconnect the brewer from the power source. If the sound is heard as described and water will not pass through the solenoid valve, there may be a blockage in the water line before or after the solenoid valve or, the solenoid valve may require inspection for wear, and removal of waterborne particles. If the sound is not heard as described, replace the solenoid valve. Removal and Replacement: 1. Remove all wires from the solenoid valves. 2. Turn off the water supply to the brewer. 3. Disconnect the water lines to and from the solenoid valves. 4. Remove the two #8-32 keps nuts holding the mounting bracket to the trunk base. 5. Lift out the bracket. 6. Remove the two #10-32 slotted-head screws holding the solenoid valve to the mounting bracket. 7. Securely install the new solenoid valve to the mounting bracket. 8. Attach the mounting bracket to the trunk base. 9. Securely fasten the water lines to and from the solenoid valves. 10. Refer to Fig. 3 when reconnecting the wir...

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