Bunn dual sh dbc Servisní příručka stáhnout pdf (Strana 31)

Page 31

If continuity is present as described, reconnect the

wires, the tank heaters are operating properly.

If continuity is not present as described, replace the

tank heater(s).

NOTE - If the tank heater remains unable to heat,

remove and inspect the heater for cracks in the sheath.

Removal and Replacement:

1. Remove wires from tank heater.

2. Remove the four #8-32 nuts securing tank heater

to tank lid.

3. Remove tank heater and gasket.

4. Install new tank heater and gasket with four #8-32

nuts on tank lid.

5. Refer to Fig. 34 when reconnecting the wires.

SERVICE (cont.)

TANK HEATERS

P803

Location:

The tank heaters are located on the left and right

side of the tank lid.

Test Procedure:

1. Disconnect the brewer from the power supply.

2 Check the voltage across the black and the blue

wires on the tank heaters. With the control ther-

mostat turned to the "ON" position (fully clock-

wise), connect the brewer to the power supply and

check the voltage across the wires with a voltme-

ter. The indication should be 208 volts ac for three

wire 120/208 volt models and 240 volts ac for

three wire 120/240 volt models.

3. Disconnect the brewer from the power supply.

If voltage is present as described, proceed to #4.

If voltage is not present as described, refer to the

wiring diagrams and check the wiring harness.

4. Remove the black and blue wires from the tank

heaters.

5. Check for continuity across the terminals of the

tank heaters.

FIG. 33 TANK HEATERS

P2232

FIG. 34 TANK HEATER TERMINALS

32248 100500

LEFT & RIGHT

BLK to Limit Thermostat

BLU to Triac

1 2 ... 26 27 28 29 30 31 32 33 34

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