DUAL ®& DUAL ® SH SINGLE ®& SINGLE ® SH - Expert-CM
DUAL ®& DUAL ® SH SINGLE ®& SINGLE ® SH - Expert-CM
DUAL ®& DUAL ® SH SINGLE ®& SINGLE ® SH - Expert-CM
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SERVICE (cont.)<br />
BREW SELECTOR SWITCH (cont.)<br />
WHI/VIO to By-Pass Valve<br />
WHI/RED to Dispense Valve<br />
GRY to Interface Socket<br />
PNK to Interface Socket<br />
TAN to Interface Socket<br />
BLU to Timer<br />
ORN to Timer<br />
GRY to Grinder Interface<br />
TAN to Grinder Interface<br />
WHI/VIO to<br />
By-Pass Valve<br />
To Timer<br />
EARLY MODEL SELECTOR SWITCH<br />
4<br />
3<br />
2<br />
1<br />
5<br />
YEL to Timer<br />
WHI/RED to<br />
Dispense Valve<br />
LATE MODEL SELECTOR SWITCH<br />
P1388<br />
FIG. 4 BREW SELECTOR SWITCH TERMINALS<br />
Test Procedure (Late model Selector Switch):<br />
1. Disconnect the brewer from the power supply.<br />
2. Disconnect all wires from the brew selector<br />
switch.<br />
3. Check for continuity across terminals (b) and (1)<br />
when the switch is in the small batch position.<br />
Continuity must not be present in any other switch<br />
position.<br />
4. Check for continuity across terminals (b) and (2)<br />
when the switch is in the medium batch position.<br />
Continuity must not be present in any other position.<br />
d<br />
b<br />
e<br />
PNK<br />
PNK to Grinder Interface<br />
TAN<br />
GRY<br />
Page 13<br />
5. Check for continuity across terminals (e) and (5).<br />
When the selector switch is in the small batch<br />
position, continuity should not be present. When<br />
the selector switch is in the medium or large batch<br />
positions, continuity should be present.<br />
If continuity is present as described the switch is<br />
operating properly.<br />
If continuity is not present as described replace switch<br />
assembly.<br />
Removal and Replacement:<br />
1. Disconnect all wires from the brew selector<br />
switch.<br />
2. Loosen the set screw on the switch knob.<br />
3. Remove the 9/16" nut and washer holding the<br />
switch to the hood.<br />
4. Remove the switch.<br />
5. Install the new switch. The positioning tab must<br />
be in the hole in the hood for proper switch and<br />
knob alignment.<br />
6. Install the knob so that the arrow lines up in the<br />
large batch position when the switch is turned to<br />
the full right position.<br />
7. Refer to Fig. 4 when reconnecting the wires.<br />
41976 031709