Bunn TWF service manual SERVICE cont, Brew Solenoid Valve Iced Tea

SERVICE (cont.)		If continuity is not present as described, replace the
BREW SOLENOID VALVE (ICED TEA)		solenoid valve.
		6.	Check the iced tea solenoid valve for coil action.
			Connect the brewer to the power source. With TEA/
			OFF/COFFEE switch in the "TEA" position press
			the START switch and listen carefully in the vicin-
			ity of the solenoid valve for a "clicking" sound as
			the coil magnet attracts.
		7.	Disconnect the brewer from the power source.
		If the sound is heard as described and water will not
		pass through the solenoid valve, there may be a block-
		age in the water line before the solenoid valve or, the
		solenoid valve may require inspection for wear, and
		removal of waterborne particles.
		If the sound is not heard as described, replace the
		solenoid valve.
	P2198.50	Removal and Replacement:
	FIG. 4 ICED TEA BREW SOLENOID VALVE	1.	Remove all wires from solenoid valves.
Location:		2.	Turn off the water supply to the brewer.
	Viewing the brewer from the rear, the iced tea brew	3.	Disconnect the water lines to and from the sole-
solenoid valve is mounted in the center of the mount-			noid valves.
ing bracket.		4.	Remove the two #8-32 keps nuts holding the
			mounting bracket to the brewer base.
Test Procedures:		5.	Lift out the bracket.
1. Disconnect the brewer from the power source.		6.	Remove the two #10-32 slotted-head screws hold-
2. Disconnect the white/violet and white/blue wires			ing the iced tea brew solenoid valve to the mount-
	from the iced tea brew solenoid valve. With the		ing bracket.
	TEA/OFF/COFFEE switch in the "TEA" position press	7.	Securely install the new iced tea brew solenoid
	the START switch.		valve to the mounting bracket.
3.	With a voltmeter, check the voltage across the	8.	Attach the mounting bracket to the brewer base.
	white/violet and white/blue wires. Connect the	9.	Securely fasten the water lines to and from the
	brewer to the power source. The indication must		solenoid valves.
	be 120 volts ac for two wire 120 volt models and	10.	Refer to Fig. 5 when reconnecting the wires.
	three wire 120/208 volt models.
4. Disconnect the brewer from the power source.

If voltage is present as described, proceed to #5	WHI/BLU to Dilution
	Solenoid
If voltage is not present as described, refer to Wiring	WHI/VIO to Dilution
Diagrams and check brewer wiring harness.	Solenoid
5. Check for continuity across the iced tea brew so-	HOT COFFEE
lenoid valve coil terminals.	BREW SOLENOID
	ICED TEA BREW
	SOLENOID
If continuity is present as described, reconnect the	DILUTION
white/violet and white/blue wires from the iced tea
	SOLENOID
brew timer.	FIG.5 SOLENOID VALVE TERMINALS P1364
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