Bunn VP17A service manual SERVICE cont, sembly

SERVICE (cont.)			4.	Remove sprayhead and the hex nut securing the
TANK HEATER				sprayhead tube to the hood. Set aside for reas-
				sembly.
			5.	Remove the eight #8-32 nuts securing the tank lid
				to the tank.
			6.	Remove the tank lid with sprayhead tube and tank
				heater.
			7	Remove the two hex nuts securing the tank heater
				to the tank lid. Remove tank heater with gaskets
				and discard.
			8.	Install new tank heater with gaskets on the tank lid
				and secure with two hex nuts.
	FIG. 6 TANK HEATER	P1262	9.	Install tank lid with sprayhead tube and tank heater
				using eight #8-32 hex nut.
Location:
			10.	Secure sprayhead tube to hood using a hex nut.
The tank heater is located inside the tank and
			11.	Install sprayhead.
secured to the tank lid.
			12.	Reconnect the thermal cut-offs to the tank heater
Test Procedures:				terminals.
			13.	Slide the grommet to the line 4.5" above the
1. Disconnect the brewer from the power supply.
				capillary bulb.
2. With a voltmeter, check the voltage across the
			14.	Insert the capillary bulb through the hole in the
black and red wire. Connect the brew to the power
				tank lid and press the grommet firmly and evenly
source. The indication must be 220 to 240 volts
				so that the groove in the grommet fits into the tank
ac.
				lid.
3. Disconnect the brewer from the power source.
			15.	Carefully bend the capillary tube so that the tube
If voltage is present as described, proceed to #4
				and bulb inside the tank are in the vertical position.
If voltage is not present as described, refer to the
			NOTE - The capillary tube must be clear of any electri-
Wiring Diagrams and check wiring harness.
			cal termination and not kinked.
4. Disconnect the thermal cut-offs from the tank			16.	Install fill basin, secure with tank inlet fitting and
				gasket.
heater terminals.
			17.	Refer to Fig.7 when reconnecting the tank heater
5. Check for continuity across the tank heater termi-
				wires.
nals.
If continuity is present as described, reconnect the					Thermal Cut-Off & BLK
thermal cut-offs, the tank heater is operating properly.			Thermal Cut-Off & WHI
					Lead on Ready Light
If continuity is not present as described, replace the			Lead from Tank
					Harness
tank heater.			Warmer Blanket
NOTE- If the tank heater remains unable to heat,
remove and inspect heater for cracks in the sheath.

Removal and Replacement:

1.Remove the tank inlet fitting securing the fill basin to the tank lid, remove fill basin and tank inlet gasket. Set all three parts aside for reassembly.

2.Disconnect the thermal cut-off with blanket warmer lead (white) and thermal cut-off with ready light harness lead (black) from the tank heater termi- nals.

3.Remove the thermostat capillary bulb by firmly

pulling up on the capillary at the tank lid. This will		P1163
	FIG. 7 TANK HEATER TERMINALS
disengage the grommet from the tank lid.
	10860.1	071598
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