SERVICE (cont.)
DISPENSE VALVE
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| L2 | L1T |
| L4 | L3 | T |
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5 | T |
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TL | T |
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P2231.35
FIG. 10 DISPENSE VALVE
Location:
Dispense valve is located inside the hood directly above the sprayhead.
Test Procedures:
1.Disconnect the brewer from the power source.
2.Disconnect the wires from the dispense valve and check for continuity across the dispense valve coil terminals.
If continuity is present as described, reconnect the wires to the dispense valve and proceed to #3.
If continuity is not present as described, replace the dispense valve.
3.With a voltmeter, check the voltage across dis- pense valve using the white/violet wire and white/ green wire on electro/mechanical models, or white/ red wire and white/green wire on DBC models. Connect brewer to the power source. Place the "ON/OFF (Warmer)" switch in the "ON" (upper) position. Press and release the start switch. The indication must be:
a.) 120 volts ac for three wire 120/208 volt models and three wire 120/240 volt models.
b.) 200 to 240 volts ac for two wire 200 or 240 volt models.
4.Disconnect brewer from the power source.
If voltage is present as described in step 3, proceed to #5.
If voltage is not present as described, refer to the Wiring Diagrams and check the brewer wiring har- ness.
5.Check the dispense valve for coil action. Connect the brewer to power source. Place the "ON/OFF (Warmer)" switch in the "ON" (upper) position, press and release the start switch. Listen carefully in the vicinity of the dispense valve for a "clicking" sound as the coil magnet attracts and repels the plunger.
6.Disconnect the brewer from the power source.
If the sound is heard as described, there may be a blockage in the dispense valve or the water line to the dispense valve. Remove the dispense valve and in- spect for wear, and remove waterborne particles.
If the sound is not heard as described, replace the dispense valve.
Removal and Replacement:
1.Disconnect wires from dispense valve.
2.Drain enough water from the tank so the dispense valve is above the water line.
3.Remove water lines and hose barb fitting from dispense valve.
4.Remove dispense valve from the sprayhead panel.
5.Install new dispense valve .
6.Reconnect the water lines, hose barb fitting and the wires to the dispense valve.
7.Refer to Fig. 11 when reconnecting wires.
WHI/VIO to Timer TL1
WHI/VIO to ON/OFF Switch
WHI/RED to Brew Selector Switch
WHI/GRN to Timer TL4
WHI/GRN to
ELECTROMECHANICAL
WHI/RED to DBC Board
WHI/RED to Brew Selector Switch
WHI/GRN to Bypass Valve
WHI to DBC
Models
RED to DBC
DIGITAL CONTROL (DBC)
P1106
FIG. 11 DISPENSE VALVE TERMINALS
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