SERVICE (cont.)
BREW TIMER (Early Models ST, STA, STF & STFA)
OLD STYLE |
P1594 |
FIG. 14 BREW TIMER |
Location:
The timer dial is located inside the front inspection panel on the top of component mounting bracket. The timer board is located inside the rear inspection panel on the component mounting bracket.
Test Procedures:
1.Disconnect the brewer from the power source.
2.Rotate the dial fully counterclockwise.
3.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:
a.) 120 volts ac for two wire 120 volt models, three wire 120/208 volt models and three wire 120/240 volt models.
b.) 200 to 240 volts ac for two wire 200 or 240 volt models.
4.Disconnect the brewer from the power source.
If voltage is present as described, proceed to #5.
If voltage is not present as described, refer to the Wiring Diagrams and check the brewer wiring har- ness.
5.Disconnect the white/orange wire from terminal TL3 and the white/yellow 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 #6.
If continuity 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. Connect the brewer to the power source. The indication must be zero.
If voltage indications are other than described, discon- nect the brewer from the power source and replace the timer.
If voltage is correct, proceed to #7.
7.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 and press the start switch. The indication must be:
a.) 120 volts ac for two wire 120 volt models, three wire 120/208 volt models and three wire 120/240 volt models.
b.) 200 to 240 volts ac for two wire 200 or 240 volt models.
If voltage indications are other than described, discon- nect the brewer from the power source and replace the timer.
If voltage is correct, readjust the timer as required.
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