SERVICE (cont.)

HOT/COLD SWITCH (Optional)

FIG. 14 HOT/COLD SWITCH

P1199.45

 

Location:

 

The hot/cold switch is located on the left side of the front panel.

Test Procedure:

1.Disconnect the dispenser from the power source.

2.Disconnect the four pin plug from the hot/cold switch and the four pin connector on the main wiring harness.

3.Press the left dispense switch on the door and check the voltage across the white wire (P4) and white/red wire (P2) in the four pin connector on the main wiring harness with a voltmeter. Connect the dispenser to the power source. The indication must be:

a)120 volts ac for two wire 120 volt models.

b)120 volts ac for three wire 120/208 volt or 120/ 240 volt models.

c)240 volts ac for two wire 240 volt models.

4.Disconnect the dispenser from the power source.

If voltage is present as described, reconnect the four pin plugs and proceed to #5.

If voltage is not present as described, refer to the wiring diagram and check the main wiring harness.

5.Disconnect the wires from the switch termi- nals.

6.With the switch in the upper “Cold” position check for continuity between the center terminal and the bottom terminal. With the switch in the down “Hot” position check for continuity between the center terminal and the upper terminal.

If continuity is present as described, the hot/cold switch is operating properly.

If continuity is not present as described, replace the switch.

Removal and Replacement:

1.Remove all wires from the switch terminals.

2.Remove the mounting nut on the front of the front panel.

3.Remove the hot/cold switch from the rear of the front panel.

4.Push new hot/cold switch through the hole on the left side of the front panel and secure with mounting nut.

5.Reconnect the wires to the terminals on rear of the switch.

6.Refer to the illustration below when reconnect- ing the wires.

WHI/BRN to Main

Harness

WHI/RED to Main

Harness

WHI/YEL to Cold

Solenoid

FIG. 15 HOT/COLD SWITCH TERMINALS P1208

23

27591 031597

 

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Bunn HC-2 HC-3 service manual HOT/COLD Switch Optional, Disconnect the wires from the switch termi- nals

HC-2 HC-3 specifications

The Bunn HC-2 and HC-3 are high-performance commercial coffee brewers designed for cafes, restaurants, and institutions that prioritize quality, efficiency, and reliability. Renowned for their exceptional brewing capabilities, both models come with a range of features that cater to the demanding needs of coffee enthusiasts and professionals alike.

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