Bunn 41722.0000A manual Start Switches, 37080.0001to T. Stat

Page 16

SERVICE (cont.)

START SWITCHES

P/N 37079.0000

P/N 37080.0001

Non Lighted

Green ready light

FIG. 16-1 START SWITCHES

Location:

The start switch is located in the front of the hood, above and to the right of the brew funnel.

Test Procedure:

1.Disconnect the brewer from the power source.

2.Remove the wires from all four terminals.

3.Check for continuity across the two terminals on the right side of the switch when it is held in the lower position. Continuity must not be present across these terminals in the upper position.

4.Check for continuity across the two terminals on the left side of the switch when it is held in the lower position. Continuity must not be present

across these terminals in the upper position.

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

If continuity is present as described, reconnect the wires, the switch is operating properly.

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

NOTE: No continuity will show across the left terminals of the lighted switch since the light is neon.

Removal and Replacement:

1.Remove the wires from the switch terminals.

2.Compress the clips inside the hood and gently push the switch through the opening.

3.Push the new switch into the opening and spread the clips to hold the switch captive in the hood.

4.Refer to Fig. 16-2 when reconnecting the wires.

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WHI/YEL

to Timer T5

WHI/ORN

to Timer T3

P/N 37079.0000

WHI/YEL

to Timer T5

GREEN

WHI/ORN

to Timer T3

RED

P/N 37079.0000

WHI/YEL

to Timer T5

BLK

to T. Stat

WHI/ORN

to Timer T3

BLU/BLK

P/N 37080.0001to T. Stat

FIG. 16-2 START SWITCH TERMINALS

41722 070209

Image 16
Contents TB3/TB6 Series Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty Contents Brew cycle will not start No water Probable Cause RemedyTo the brewer Problem Brew cycle will not start Water is not hotProbable Cause Control Thermostat Tank HeaterInconsistent beverage level Surfaces can initiate corrosiveReactions resulting in serious LeaksSpitting or excessive steaming Dripping from sprayhead Refer to Service Timer for test- ing proceduresBeverage overflows dispenser Funnel Brewer is making unusal noises Dry coffee grounds remainPlumbing Lines Water Supply Brewer is making unusal noises Tank Heater Problem Probable Cause RemedyCont Tank heater Control Thermostat Component AccessLocation Control thermostat is located in the hood Disconnect the control thermostat wires Adjust the control thermostat as requiredRemove all wires from limit thermostat termi- nals Limit ThermostatTank Heater Disconnect the brewer from the power supply1680W-120V 1680W-100V 1680W-230V 29.0 33.7 Refer to -2 when reconnecting the wires Lighted ON/OFF Switch TB3/TB3QOrange light Switch is located on the front control panel Through four when the switch is in the oposite PositionSwitch If continuity is present as described, replace the wiresStart Switches 37080.0001to T. StatInlet Valves BREW/DILUTION Timer TB3 & TB6 BREW/DILUTION Timer Triacs Triacs TH-1/MV-1 Brew solenoid TH-2/MV-2 Dilution solenoidTerminals ½ batch connector Digital Brew Timer TB3Q & TB6QWhite Red Neutral L2 Digital Timer Triacs Triacs MV-2 Brew solenoid output MV-1 LineSchematic Wiring Diagram TB3Q Volts AC Wire Single PhaseSchematic Wiring Diagram TB3, TB3B, TB3-LP Schematic Wiring Diagram TB3Q Schematic Wiring Diagram TB3Q W/SWEETENER & Empty BAG Detect Schematic Wiring Diagram TB6 Schematic Wiring Diagram TB6Q