Bunn Liquid Coffee Refrigerated Dispenser LCR-3 HV

CAUTION: The dispenser must be disconnected from the power source throughout these steps

Disconnect the dispenser from the power source

Shut off and disconnect the incoming water supply

Pull out drain tube to empty into a sink or a container with a minimum of five-gallon capacity

Make sure drain clamp is closed. Then, remove drain plug

Be very careful with the draining water because it can be very hot

Direct tube into sink or container and open drain clamp. Continue draining tank until ALL of the water is out

Close drain clamp, insert drain plug, place drain tube back into machine, and replace splash panel

NOTE: Replacement parts or service caused by failure to perform required maintenance is not covered by warranty

Replace pump hoses every 6-Months or as needed

The pumps and tubing used in the dispenser are designed to give maximum performance and long life. However, the tubes are a wear item and must be replaced periodically. How long the tubes last is dependent on usage and properties of the concentrate. Excessive wear will reduce the output of the pumps resulting in a weak mixed beverage

Rinse the pump tubing with warm tap water (Refer to steps 1 - 5 of the Weekly Sanitizing instructions) prior to removing the tubes to avoid concentrate spills

Loosen the thumbscrew securing the tubing retainer plate to the pump housing. Set it and the retainer plate aside

Depress the tension screw and remove it from the notch in the pump housing, releasing the spring tension on the pump band

Open the compression band and gently pull the pump tube from around the pump's rotor

Inspect the pump bands for signs of wear. Replace if necessary

Apply lubricant (BUNN-O-MATIC part number M2531.0001) to the new pump tubing's rotor side.

Remove the screen filter from the back of the dispenser

Wash the screen in a mild detergent solution

Use a soft bristled brush to remove all dust and grease

Reinstall the screen on the back of the dispenser

Sign off on the dispenser refrigeration air filter maintenance

Remove the lower splash guard assembly to access the digital programming module with LCD display

Open the cabinet door and set the Function Switch to the Rinse position. Close the door

Place a large container under the Left dispenser tip, then activate and hold the left dispenser

Dispense long enough to rinse all the concentrate out of the mix chamber and for the Conductance reading to stabilize and stop dropping

Record the nominal Conductance value displayed. This is the conductance reading of the water in your area

Repeat steps 3, 4 & 5 for the Right dispenser

Add 100 points to the larger of the Left or Right side Conductance value. This is the new Empty BIB threshold value for your dispenser

Enter this new value into the Empty BIB Alarm threshold

Remove the lower splash guard assembly to access prior to starting this procedure

Calibrate the Left and Right Side Dispenser

Select PRIME on the Function Selector Switch

Place a container under the Left Dispense Tip and prime the concentrate lines until a steady stream of concentrate comes out the tip

Stop the Priming and allow the tip to stop dripping. Discard the concentrate collected

Select NORMAL on the Function Selector Switch

Locate the programming module and use the Arrow Down key to scroll through LCD screens until CAL LEFT SIDE appears and press the YES button

The CAL LEFT PUMP menu screen will be displayed. Place a 50 ml graduated cylinder under Left Dispense Tip and activate the Left Dispenser momentarily. The dispenser will run the Left Concentrate Pump for 20 seconds and then shut OFF automatically