Bunn Liquid Coffee Ambient Dispenser LCA-2

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

NOTE: You can calibrate either the Concentrate Pump or the Dispenser Flow Rate independently. Simply scroll through the menu screen to the desired section and perform only those steps

Select PRIME on the Function Selector Switch. (refer to Priming the Concentrate Lines)

Place a container under the Left Dispense Tip and prime the concentrate lines until a steady stream of concentrate comes out the tip (approximately 10 seconds)

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

Keep the graduated cylinder under dispense tip until all the concentrate has dripped out

Select Prime on the Function Selector Switch and Run on the Mode Selector Switch

Remove the bag connector from the product box and disassemble or prop open the internal valve

Place the bag connector into a one-gallon (3.8 liter) container of warm soapy tap water 140°F (60°C)

Place an empty container under dispense tip and activate the corresponding Dispenser until the clean soapy water is dispensed from the dispense tip

Repeat steps 4 and 5 with warm tap water 140°F (60°C) to rinse the soapy water from the pump tubing

Continue dispensing until the water is clear, and no soapy water is being dispensed

Prepare 2.5 gallons (9.46L) of sanitizing solution by dissolving 1 packet of Kay 5 sanitizer into 2.5 gallons (9.46L) of 120°F (48.9°C) water to ensure 100 ppm of available chlorine

Again, repeat steps 4 and 5 with the sanitizing solution. Once sanitizing solution is visible, continue to dispense for 1 minute. Release handle and allow solution to sit for 5 minutes

Locate the programming module and use the Arrow Down key to scroll through the LCD screen until 'CAL HOT WTR FLO?' appears

Is 'CAL HOT WTR FLO?' displayed on the LCD screen?

Place a 64 Oz (2000 ml) graduated container under Hot Water Tip and press the hot water switch. The unit will dispense Hot Water for 20 seconds and then shut OFF automatically. Keep the graduated container under the dispense tip until all the water stops dripping

Measure the volume of water collected in the graduated container

Is the volume of water collected within the acceptable range of 32 - 38 Oz. (946 - 1124 ml)?

If the amount collected is not within the acceptable range, empty the container and repeat steps 2 & 3

If the amount collected is still not within range, inspect the hot water valve, tubing and fittings for lime, kinks, or other obstructions

Is the volume of water collected now within the acceptable range?

When satisfied with the volume of concentrate collected, press the Down Arrow Key

Select Rinse on the Function Selector Switch and Run on the Mode Selector Switch

Place a 1/2 gal (2 liter) container under the appropriate dispense nozzle or nozzles

Activate the Dispenser of the appropriate side or sides for approximately twenty seconds or until the hot water is clear or has no concentrate coloring in it

Open the dispenser door, select Normal on the Function Selector Switch, and then close door

Note: To clear the 'Rinse' alarm, activate each dispenser until the flow stops automatically (approx. 20 seconds for each tip). The 'Rinse' alarm LED will turn off when the Rinse Procedure has been satisfied for both sides

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.

Rinse the pump tubing with warm tap water 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.