Bunn VLPF Manual De Propietario

        

Page 15      

10179 121704

P2172.80

Location:

 

The brew timer is located in the hood, to the right 

of the tank.

Test Procedures:

1.  Disconnect the brewer from the power source and 

remove the top cover.

2.  With a voltmeter, check the voltage across termi-

nals TL1 and TL2 when the “ON/OFF” switch is 

in the “ON” position. Connect the brewer to the 

power source.  The indication must be 120 volts 

ac.

3.  Disconnect the brewer from the power source.

If voltage is present as described, proceed to #4.

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

ing Diagram and check the brewer wiring harness.

4.  Disconnect the white/blue wire from terminal TL3 

and the blue wire from terminal TL5. Check for 

continuity across the two wires when the start 

switch is pressed to the “START” position.

If continuity is present as described, reconnect the 

wires and proceed to #5.

If continuity is not present as described, refer to the 

Wiring Diagram and check the brewer wiring har-

ness.

FIG. 4  BREW TIMER

5.  With a voltmeter, check the voltage across termi-

nals TL1 and TL4 when the “ON/OFF” switch is 

in the “ON” position. Connect the brewer to the 

power source.  The indication must be 0 volts.

If voltage is as described, proceed to #6.

If voltage is not as described, disconnect the brewer 

from the power source and replace the timer.

6.  With a voltmeter, check the voltage across ter-

minals TL1 and TL4 when the “ON/OFF” switch 

is in the “ON” position. Connect the brewer to 

the power source and press the start switch. The 

indication must be 120 volts ac.

If voltage is present as described, the brew timer is 

operating properly. Reset the timer as required, to 

obtain the desired brew volume.

 If voltage is not present as described, disconnect 

the brewer from the power source and replace the 

timer.

Removal and Replacement:

NOTE: Do not remove or install wires while timer board 

is installed. Pressure applied to one side may cause 

damage to the board.

1.  Remove the two #8-32 nuts  securing circuit board 

to the hood.

2.   Remove circuit board and spacers (as required).

3.  Remove all wires from the timer.

4.  Attach all wires to the replacement timer board 

prior to installation to the component mounting 

bracket.  Refer to FIG. 5 when reconnecting the 

wires.

5.  Install new circuit board with spacers (as required) 

to the hood.

6.  Adjust the timer as described below.

Timer Setting:

NOTE: Prior to setting or modifying volumes, check 

that the brewer is connected to water supply, the 

tank is properly filled, and a funnel and server are in 

place.

NOTE:  All volume settings must be done with the 

sprayhead installed.