Bunn 34766.0000S manual Calibrating the Left Side Dispenser

Page 30

Field Calibration of the Concentrate Pumps / Dispenser Flow Rates

The factory set Default Values for the Pump & Dispenser Flow Rates are very accurate and typically do not need to be field calibrated. However, if the mix ratio accuracy is ever in question, this procedure can be used to recalibrate the unit in the field.

Equipment Required:

50 to 100 ml graduated cylinder, with 1 ml graduations.

64 Oz (2000 ml) graduated container.

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.

Calibrating the Left Side Dispenser

Concentrate Pump Calibration

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

2.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).

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

4.Select NORMAL on the Function Selector Switch.

5.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.

6.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.

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

8.Measure the volume of concentrate collected in the graduated cylinder.

Acceptable ranges for the volume collected

Tubing Size

Volume Collected

3/16” tubing

40

- 47 ml.

1/8” tubing

16

- 22 ml

9.If the amount collected is not within the acceptable range, empty the graduated cylinder and repeat STEPS 6 – 8.

10.If the amount collected is still not within range, replace the pump tubing with a new Tube Kit, (refer to the Tube Replacement Instructions).

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

12.The CAL LF PUMP VOL menu screen will be displayed. Use the (-) / (+) keys to adjust number displayed to the amount measured in STEP 8.

(Continued Next Page)

30

34766 073007

 

Page 29 Page 31
Image 30
Page 29 Page 31
Contents Post Office BOX SPRINGFIELD, Illinois Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty Contents Introduction37881.0000 28181.0003 11646.0002 User Notices00656.0001 40054.0000Models with Master ON/OFF Switch Field Wiring Terminal Block DiagramModels without Master ON/OFF Switch Electrical RequirementsElectrical HOOK-UP Plumbing RequirementsInitial SET-UP Plumbing HOOK-UPSetting Dispenser Flow Rate Removing the restrictorsReprogramming the Dispenser Flow Rate Rate Selecting the Correct Pump TubingDispense Oz/sec 16 I.D. TubingOperating Controls and Interface 1513Initial Fill & Heat FlavorGard Feature Rinse Alarm FeatureAlarm Mode BIB Empty Lockout Feature Brew Temperature Lockout Feature351 + Programming the DispenserMenu Screen Action Description Tank Temp Exit 3/16Menu Screen Lock Flavor ? Exit YES Flavors Locked LF Disp VolumeRT Disp Volume 0oz +Ready Temp Menu Screen Tank TempExit + Cabinet TempAction Description Menu ScreenRinse Time ? 12 Hrs + CAL Left Pump ? Pull DispenseCAL RT WTR Flow Pull Dispenser Menu Screen ActionCAL Right Pump ? Pull Dispenser CAL Right Side ? Exit YESTest LED’S ? No Exit YES Test Switches ? WTR Start DelayWTR Stop Delay Test Refill ? Exit YESLoading the Concentrate Priming the Concentrate LinesOperating the Pull & Hold Dispenser Filling Cambros or other large containersOperating the Preset Portion Control Dispenser Models LCA-2 PC, LCA-2C PC, LCA-2A PCDaily Parts Washing Cleaning & Preventative MaintenanceGeneral Cleaning and Sanitizing Procedures Daily Rinsing Weekly SanitizingPreventive Maintenance Replacing the Pump TubingDraining the HOT Water Tank Troubleshooting Power LED OFFFront Panel LED Display Messages Concentrate BIB is Empty Internal FaultLeft Refill LED on Empty BIB WarningTroubleshooting Dispenser Diagnostics-LCD Display Possible CauseScreen Displayed Possible Cause CHK RPM Sensor CHK Tubing Area RT Pump Fault Left Pump FaultCHK Pump Wiring CHK RPM Sensor CHK Tubing Area Cooler FaultCalibrating the Left Side Dispenser Oz/sec 74 ml/sec w/o flow restrictor Field Calibrating the Hot Water Flow RateOz/sec 53 ml/sec w/ flow restrictor Calibrating the Right Side DispenserField Calibrating the Empty BIB Warning Calibrating The Empty BIB ThresholdVolts AC 2 Wire Schematic Wiring Diagram LCC-2A/LCA-2A/LCA-2A, PC

34766.0000S specifications

The Bunn 34766.0000S is a commercial-grade coffee maker that stands out for its efficiency and precision in brewing. Designed for high-volume environments such as restaurants, cafes, and offices, this coffee brewer is engineered to deliver a consistent and robust coffee flavor with every brew.

At the heart of the Bunn 34766.0000S is its unique brewing system, which employs a patented technology to optimize extraction. This system ensures that water is heated to the ideal temperature, usually around 200°F, for optimal flavor extraction from coffee grounds. The precise temperature control is essential in commercial settings, where the quality of coffee can significantly affect customer satisfaction.

The Bunn 34766.0000S features a stainless steel construction, which not only enhances its durability but also allows for easy cleaning and maintenance. The sleek design fits comfortably in any kitchen setting, and its compact size makes it suitable for countertops with limited space. With a 12-cup capacity, this machine is capable of producing multiple pots of coffee quickly, ensuring that demand is met during peak hours.

One of the standout features of the Bunn 34766.0000S is its Smart Brew technology. This innovative feature allows for customizable brewing settings, enabling users to adjust brew strength and flavor profiles according to their specific preferences. The machine includes a programmable timer, which can be set for automatic brewing, a significant advantage for businesses that require coffee to be ready at specific times.

Additionally, the Bunn 34766.0000S comes equipped with a built-in water tank, which keeps water at the optimal brewing temperature for instant coffee production. This feature minimizes waiting times and ensures that coffee is always fresh.

In terms of safety, the Bunn 34766.0000S is fitted with an advanced safety shut-off mechanism to prevent overheating and ensure that the machine operates within safe temperature limits. This reliability is crucial for busy establishments where operational efficiency is paramount.

In summary, the Bunn 34766.0000S is an exceptional choice for businesses looking for a dependable, high-quality coffee brewing solution. It combines innovative brewing technologies, user-friendly features, and a robust design to meet the demands of any commercial environment, making it an indispensable tool for serving delicious coffee consistently.
Top Page Image Contents