SERVICE (cont.)
BREW TIMER (Early Models)
FIG. 4 BREW TIMER | P1276.40 |
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Location:
The brew timer is located in the hood. It consists of the left dial plate and circuit board.
Test Procedure:
1.Disconnect the brewer from the power source.
2.Remove the wires from terminals TL3, TL4, & TL5
of the timer and rotate the dial fully counterclock- wise.
2.With a voltmeter, check the voltage across termi- nals TL1 and TL2 when the ON/OFF switch is in the ÒONÓ position. Connect the brewer to the power source. The indication must be:
a)120 volts ac for two wire 120 volt models.
b)240 volts ac for two wire 240 volt models.
c)100 volts ac for two wire 100 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 Diagram and check the wiring harness.
4.Check for continuity across the white/orange and white/yellow wires when the start switch is held in the lower position.
If continuity is present as described, reconnect the wires to terminals TL3, TL4, & TL5 of the timer board and proceed to #5.
If continuity is not present as described, refer to the Wiring Diagrams and check the wiring harness.
5.With a voltmeter, check the voltage across termi- nals TL1 and TL4 when the ON/OFF switch is in the ÒONÓ position and the start switch is momen- tarily placed in the lower position. Connect the brewer to the power source. The indication must be:
a)120 volts ac for two wire 120 volt models for approximately twenty seconds and then return to its previous indication.
b)240 volts ac for two wire 240 volt models for approximately twenty seconds and then return to is previous indication.
c)100 volts ac for two wire 100 volt models for approximately twenty seconds and then return to its previous indication.
6.Disconnect the brewer from the power source.
If voltage is present as described, the timer is operat- ing properly. Adjust the timer dial as required.
If voltage is not present as described, replace the timer.
Removal and Replacement:
1.Remove all wires from the timer.
2.Remove the circuit board and dial plate from the brackets.
3.Install the new timer circuit board as described in Late Model Timer Section on the following pages.
4.Refer to Fig. 7 when reconnecting the wires.
5.Install the Timer Setting decal, provided with the replacement timer kit, to the rear of the schematic, on the bottom of the top cover.
5.Adjust the timer as required. Refer to Late Model Timer section on the following pages.
| WHI to Power Cord (100V & 120V) |
| or RED to Power Connector (240V) |
| WHI to Dilution Timer (100V & 120V) |
| or RED to Dilution Timer (240V) |
| WHI/VIO to Dilution Timer |
| WHI/VIO to ON/OFF Switch |
WHI/ORN to Start Switch |
|
WHI/GRN to Brew Solenoid |
|
WHI/YEL to Start Switch | PNK to Selector Switch |
| |
| (Half Batch Option |
| Only) |
OLD STYLE | GRY to Selector Switch |
(Half Batch Option |
Only) |
| |
| P1279 | |
FIG. 5 BREW TIMER TERMINALS | ||
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Page 17 | 10225 | 071500 |
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