Bunn TNT-3 Manuel de service télécharger pdf (Page 21)

Page 21

SERVICE (cont.)

BREW TIMER (ICED TEA - LATE MODELS)

Location:

The timer is located in the hood on the right side.

Test Procedure.

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 front access panel.

2. Remove the two #8-32 screws securing circuit

board to the mounting bracket.

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

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

nals TL1 and TL2 when the "ON/OFF" switch is in

the "ON" position and the ICED/OFF/HOT switch is

in the "ICED" position. Connect the brewer to the

power source. The indication must be 120 volts ac

for two wire 120 volt models and three wire 120/

208 volt models.

5. Disconnect the brewer from the power source.

If voltage is present as described, proceed to #6.

If voltage is not present as described, refer to the

Wiring Diagrams

and check the brewer wiring har-

ness.

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

nals TL1 and TL4 when the "ON/OFF" switch is in

the "ON" position and the ICED/OFF/HOT switch is

in the "ICED" position. Connect the brewer to the

power source. The indication must be 0 volts.

If voltage is as described, proceed to #7.

If voltage is not as described, disconnect the brewer

from the power source and replace the timer.

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

nals TL1 and TL4 when the "ON/OFF" switch is in

the "ON" position and the ICED/OFF/HOT switch is

in the "ICED" position. Connect the brewer to the

power source and press the "START" switch. The

indication must be as follows 120 volts ac for two

wire 120 volt models and three wire 120/208 volt

models.

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:

1. Remove the two #8-32 screws securing circuit

board to the mounting bracket.

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. 13 when reconnecting the

wires.

5. Install new circuit board with spacers (as re-

quired) to the component mounting bracket.

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.

P2213.60

NEW STYLE

FIG. 12 ICED TEA BREW TIMER

28201 081500

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 29 30

Commentaires sur ces manuels

Pas de commentaire

Bunn TNT-3 Manuel de service Page 21

Commentaires sur ces manuels

Produits connexes et manuels pour Cafetières Bunn TNT-3