Bunn H5E Guia Do Utilizador

18

Location:

The  solenoid  valve  is  located  inside  the  rear  of  the 

dispenser on the right side near the bottom.

To test the solenoid valve, access will also be needed 

to the electronic control assembly.

7.  Check the solenoid valve for coil action. Connect 

the dispenser to the power source. Listen carefully 

in the vicinity of the solenoid valve for a “clicking” 

sound after approximately 5 seconds, as the coil 

magnet attracts the plunger.

8.  Disconnect the dispenser from the power source.

9.  Reconnect the pink wire to terminal 5 of the elec-

tronic control assembly.

If the sound was 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 was not heard as described, replace the 

solenoid valve.

Removal and Replacement:

1.  Remove all wires from the solenoid valve coil.

2.  Turn-off the water supply to the dispenser.

3.  Disconnect the water lines to and from the solenoid 

valve.

4.  Remove the two 8-32 slotted-head screws holding 

the  solenoid  valve  and  mounting  bracket  to  the 

component bracket.

5.  Lift-out the solenoid valve.

6.  Remove the two 10-32 slotted-head screws holding 

the solenoid valve to its mounting bracket.

7.  Securely install the new solenoid valve to its mount-

ing bracket. The direction of flow arrow must be 

pointing towards the tank lid.

8.  Attach the solenoid valve and mounting bracket to 

the component bracket.

9.  Securely  fasten  the  water  lines  to  and  from  the 

solenoid valve.

10. Reconnect the wires, FIG. 11.

Test Procedure:

1.  Disconnect the dispenser from the power source 

and turn-off the water supply to the dispenser.

2.  Remove the pink wire from terminal 5 of the elec-

tronic control assembly.

3.  Check  the  voltage  across  the  solenoid  valve  coil 

terminals with a voltmeter. Connect the dispenser 

to the power source. The indication must be:

 

a.) 100 to 120 volts ac for 100 to 120 volt models 

or

 

b.) 200 to 240 volts ac for 200 to 240 volt models

 

or

 

c.) 230 volts ac for 230 volt models 

 

after a delay of approximately 5 seconds.

4.  Disconnect the dispenser from the power source.

If voltage was present as described, proceed to #5.

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

ing Diagrams and check the dispenser wiring harness.

5.  Remove  both  wires  from  the  solenoid  valve  coil 

terminals.

6.  Check for continuity across the solenoid valve coil 

terminals.

If continuity is present as described, reconnect the wires 

and proceed to #7.

If  continuity  is  not  present  as  described,  replace  the 

solenoid valve coil.

FIG. 10 SOLENOID VALVE

FIG. 11 SOLENOID VALVE WIRING

WHI/BLU to Electronic Control #1

 

WHI or RED to Terminal Block

P1778

P1779

10420 091902