Bunn TB6Q Manual De Usuario

Page 18

 

The timer is located in left side of the hood.

NOTE: Do not remove or install wires while timer board 

is installed. Pressure applied to one side may cause 

damage to the board.

1.  Disconnect the brewer from the power source and 

remove the top cover.

2.  With a voltmeter, check the supply voltage across 

terminals TL1 and TL2. Connect the brewer to the 

power source. Turn on the "ON/OFF" switch. The 

voltage must be:

 

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

 

b)  200 to 230 volts ac on two wire 200 volt or 

230 volt models.

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 Diagrams and check the wiring harness.

4.  With a voltmeter, check the BREW output voltage 

across terminals TL2 and TL4; and the DILUTION 

output  voltage  across  terminals  TL2  and  TL6. 

Connect the brewer to the power source, turn on 

the "ON/OFF" switch and press the "START" switch. 

The voltage must be:

 

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

 

b) 200 to 230 volts ac for two wire 200 volt or 230 

volt models.

FIG. 18-1 BREW/DILUTION TIMER

If voltage is present as described, the timer is operat-

ing properly. 

If voltage is not present as described, disconnect the 

brewer from the power source and replace the timer.

Removal and Replacement:

1.  Remove the two #6-32 screws, lock washers and 

spacers securing timer to bracket.

2.  Disconnect all wires from the timer.

3.  Refer to schematic and reconnect wires.

4.  Install new timer to bracket with the two #6-32 

screws, lock washers and spacers.

5.  Adjust the timer as required.

FIG. 18-2 TIMER TERMINALS

Terminals:

J-1  

½ batch connector

J-4  

Dilution delay time 1-2 (NORMAL), 3-4 (2x)

SW-1  Programming Enable/Disable

TRM-1 White/Violet   L1 in from ON/OFF switch

TRM-2 White (Red)  Neutral (L2)

TRM-3 White/Orange  Start switch

TRM-4 White/Green  Brew solenoid

TRM-5 White/Yellow  Start switch

TRM-6 White/Blue 

Dilution solenoids

J-4

J-1

SW1

TRM-6

TRM-5

TRM-4

TRM-3

TRM-2

TRM-1

41722 070209