Bunn 41722.0000A manual Spitting or excessive steaming Dripping from sprayhead

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TROUBLESHOOTING (cont.)

PROBLEM

Spitting or excessive steaming (cont.)

Dripping from sprayhead

Water flows into tank continu- ously (ON/OFF Switch "ON")

Water flows into tank continu- ously (ON/OFF Switch "OFF")

Beverage overflows dispenser

PROBABLE CAUSE

2.Control Thermostat

1.Syphon System

2. Lime Build-up

CAUTION - Tank and tank com- ponents should be delimed regularly depending on local water conditions. Excessive min- eral build-up on stainless steel surfaces can initiate corrosive reactions resulting in serious leaks.

3. Solenoid Valve

1. Timer

1. Solenoid Valve

1.Dispenser

2.Timer

3.Solenoid Valve

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REMEDY

Refer to Service - Control Ther- mostat for testing procedures.

The brewer must be level or slightly lower in front to syphon properly.

Inspect the tank assembly for excessive lime deposits. Delime as required.

Remove the solenoid valve and clear any obstructions. Rebuild or replace the valve if necessary.

Refer to Service - Timer for test- ing procedures.

Remove the Solenoid Valve and clean any obstruction. Rebuild or replace the valve if necessary.

The dispenser must be com- pletely empty before starting a brew cycle.

Refer to Service - Timer for test- ing procedures.

Remove the Solenoid Valve and clean any obstruction. Rebuild or replace the valve if necessary.

41722 070209

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Contents Phone 217 529-6601 FAX 217 TB3/TB6 SeriesBUNN-O-MATIC Commercial Product Warranty Contents Brew cycle will not start No water Probable Cause RemedyTo the brewer Control Thermostat Tank Heater ProblemBrew cycle will not start Water is not hot Probable CauseLeaks Inconsistent beverage levelSurfaces can initiate corrosive Reactions resulting in seriousSpitting 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 Adjust the control thermostat as required Disconnect the control thermostat wiresLimit Thermostat Remove all wires from limit thermostat termi- nalsTank 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 If continuity is present as described, replace the wires Switch is located on the front control panelThrough four when the switch is in the oposite Position Switch37080.0001to T. Stat Start SwitchesInlet Valves BREW/DILUTION Timer TB3 & TB6 Triacs TH-1/MV-1 Brew solenoid TH-2/MV-2 Dilution solenoid BREW/DILUTION Timer TriacsTerminals ½ batch connector Digital Brew Timer TB3Q & TB6QWhite Red Neutral L2 Triacs MV-2 Brew solenoid output MV-1 Line Digital Timer TriacsVolts AC Wire Single Phase Schematic Wiring Diagram TB3QSchematic 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