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Page 23
SERVICE (cont.)
RELAY
FIG. 16 RELAY
P2172.80
Location:
The relay is located in the right rear corner of the
hood.
Test Procedures
1. Disconnect the brewer from the power source.
2. With a voltmeter, check the voltage across termi-
nals A & B in the lower corners of the relay when
the On/Left switch is in the upper position and
the Start switch is pressed to the lower position
and released. Connect the brewer to the power
source. The indication must be 120 volts ac for
the approximate setting of the brew timer and then
return to zero.
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. Remove the black and white wires from terminals
A & B.
5. Check for continuity across terminals A & B of the
relay.
If continuity is present as described, reconnect the
black and white wires and proceed to #6.
If continuity is not present as described, replace the
relay.
6. Remove the brown/white, white/red, and white/
blue wires from terminals 2, 5 & 7 of the relay.
10179 121704
7. Check for continuity across terminals 2 & 7 when
the On/Left switch is in the upper position only
until the Start switch is pressed to the lower
position and released. Connect the brewer to the
power source. Continuity must return across these
terminals after the approximate setting of the brew
timer.
8. Disconnect the brewer from the power source.
9. Check for continuity across terminals 5 & 7 when
the On/Left switch is in the upper position and the
Start switch is pressed to the lower position and
released. Connect the brewer to the power source.
Continuity must be present across these terminals
for the approximate setting of the brew timer.
10. Unplug the brewer.
If continuity is present as described, reconnect the
wires, the relay is operating properly.
If continuity is not present as described, replace the
relay.
Removal and Replacement:
1. Remove all wires from the relay terminals.
2. Remove the two #8-32 nuts holding the relay
mounting bracket to the hood.
3. Remove the relay from the mounting bracket.
4. Securely install the new relay to the mounting
bracket.
5. Install the relay mounting bracket to the hood.
6. Refer to FIG. 17 when reconnecting the wires.
FIG. 17 RELAY TERMINALS
P1988.70
BLK to Timer (TL3)
BRN/WHI to Liquid
Level Board (J1)
WHI/RED toLiquid Level Board (J2)
WHI/RED to Timer (TL1)
WHI/BLU to
Solenoid
WHI/GRN to Timer (TL4)
7
2
5
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