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Page 21

FIG. 20 SOLENOID VALVE

FIG. 21 SOLENOID VALVE WIRING

4.  Check the solenoid valve for coil action.  Connect 

the brewer to the power source, place the On/Off 

brew station warmer switch in the upper posi-

tion, press and release the start switch.  Listen 

carefully in the vicinity of the solenoid valve for a 

“clicking” sound as the coil magnet attracts and 

after the approximate setting of the level float 

switch, repels the plunger.

5.  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 block-

age 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.  Disconnect the brewer from the power source.

2.  Turn off the water supply to the brewer.

3.  Remove the top cover or top warmer housing to 

gain access.

4.  Disconnect all wires from the solenoid valve.

5.  Disconnect the water lines to and from the sole-

noid valve.

6.  Remove the two #8-32 screws which hold the 

solenoid valve and mounting bracket to the 

component bracket.

7.  Lift out the solenoid valve and bracket. Remove 

the bracket from the solenoid valve and save to 

mount the new valve.

8.  Securely install the new solenoid valve to the 

mounting bracket with two #10-32 screws. Check 

the direction of flow arrow on the valve. It must 

be pointing toward the tank inlet tube.

9.  Securely attach the valve and bracket to the com-

ponent bracket using the two #8-32 screws.

10.  Securely fasten the water lines to and from the 

solenoid valve.

11.  Refer to FIG. 21 when reconnecting the wires.

Location:

The solenoid valve is located under the top cover or 

top warmer housing, FIG. 20.

Test Procedure:

1.  Check the voltage across the white and the black 

and blue wires with a voltmeter when the On/Off 

brew station warmer switch is in the upper posi-

tion and the start switch is pressed to the lower 

position and released.  Connect the brewer to the 

power source.  The indication must be:

 

a) 120 volts ac for two wire 120 volt models and 

three wire 120/240 volt models,

 

b) 200 or 240 volts ac for two wire 200 volt or 

240 volt models,

 

c) 100 volts ac for two wire 100 volt models.

2.  Disconnect the brewer from the power source.

If voltage is present as described, proceed to #3.

If voltage is not present as described, refer to the Wir-

ing Diagrams and check the brewer wiring harness.

3.  Check for continuity across the solenoid valve 

coil terminals.

If continuity is present as described, reconnect the 

white and the black and blue wires and proceed to 

#4.

If continuity is not present as described, replace the 

solenoid valve.

P1478

P1588

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