Bunn dual sh dbc Servisní příručka stáhnout pdf (Strana 20)

Page 20

If continuity is present as described, reconnect the

wires to the dispense valve(s) and proceed to #7

If continuity is not present as described, replace the

dispense valve.

7. Check the dispense valve for coil action. Connect

the brewer to power source. Place the ON/OFF"

switch in the "ON" 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.

8. 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. Drain enough water from the tank so the dispense

valves are above the water level.

2. Disconnect wires and water tubes from dispense

valve.

3. Remove dispense valve from the sprayhead panel.

4. Install new dispense valve.

5. Reconnect the water lines and the wires to the

dispense valve.

6. Refer to Fig. 11 when reconnecting wires.

P782

FIG. 11 DISPENSE VALVE TERMINALS

DISPENSE SOLENOID VALVES

Location:

Dispense valves are located inside the hood in

the center of each sprayhead panel.

Test Procedures:

1. Disconnect the brewer from the power source.

2. Disconnect the wires from the right dispense valve

and check the voltage across the white wire and

white/red wire. Connect brewer to the power

source. Place the "ON/OFF" switch in the "ON"

position, press and release the start switch. The

indication must be 120 volts ac for three wire 120/

208 volt models and three wire 120/240 volt

models.

3. Disconnect brewer from the power source.

4. Disconnect the wires from the left dispense valve

and check voltage across the white wire and the

white/green wire. Connect the brewer to the power

source. Place the "ON/OFF" switch in the "ON"

position, press and release the start switch. The

indication must be 120 volts ac for three wire 120/

208 volt models and three wire 120/240 volt

models.

5. Disconnect brewer from power source.

If voltage is present as described in steps 2 & 4

proceed to #6.

If voltage is not present as described, refer to the

wiring diagrams and check the brewer wiring harness.

6. Check for continuity across the dispense valve coil

terminals.

FIG. 10 DISPENSE VALVES

P2232

SERVICE (cont.)

32248 100500

WHI to right By-pass Solenoid

WHI/RED to DBC Controller J1-1

WHI to left By-pass Solenoid

WHI/GRN to DBC Controller J1-9

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 33 34

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