The multimeter is a handheld instrument designed to measure current, resistance, and capacitance. As one of the most valuable tools a technician uses on the job, it is important that it is used correctly. Before using a multimeter you should read the safety information and become familiar with the safety warnings and cautions. Taking the time to review the safety information is for your own safety as well as protecting the meter and all the equipment involved.

A microprocessor carries out a number of electronic functions in an integrated circuit. The microprocessors found in BUNN equipment are used to control water temperature, water delivery, motors, and other integrated components needed for machine operation.

A control thermostat is a device designed to keep water at a constant temperature. It is preset for a specific temperature and will open and close its contacts to maintain that temperature.

The liquid level probe is a sensor that monitors the water level in the tank. When water comes in contact with the probe it completes the circuit to ground. Once the circuit is complete the control board knows the take is full and opens the refill circuit shutting off the incoming water supply.

The liquid level control board is an electronic device designed to automatically fill the brew tank with water when it senses a low level condition. It works in conjunction with the Liquid Level Probe and tank ground. A low AC signal is applied to the probe from this board. Minerals in the water complete the path from the probe to ground. When no ground is present and the machine is “on”, the liquid level board will then send a signal to the refill solenoid to energize. It will de-energize when the probe again senses water.

A limit thermostat is a safety device designed to open or break the circuit in high temperature or high current situations. They are rated for both current and temperature.

Technology that allows the customer to see the milk frothing in the BUNN super automatic espresso systems with an integrated temperature sensor that simply cuts off steam through a wand when the milk reaches the preset temperature, eliminating the need to manually use a thermometer.

A product line of coffee/rea brewers that allow different brewing profiles from the same machine/footprint, saving valuable counter space.

A chemical reaction where the materials created during extraction break down further into water-soluble proteins and sugars. Part of the brewing process that includes wetting and extraction.

Technology that mixes high viscosity concentrates thoroughly, consistently, and accurately to the required brix setting. The consistent results ensure the best quality beverage in the cup and contribute to maximum profits in the beverage program.

The tank heater is a device used to heat the water in the tank. It is quite similar to the heating elements found in common household appliances, such as water heaters, ovens, and clothes dryers to name a few. Its construction is a high heat-resistive element encased in a heat-treated stainless steel tube. Magnesium oxide powder is used as filler and insulation to keep the resistive wire in place and away from the casing. Elements are built for specific applications and are not necessarily interchangeable. They are rated for applied voltage and a specific power output (wattage), which will determine the resistance (ohms value).

A hammer arrestor is a plumbing device designed to absorb spikes in water pressure. It consists of a chamber filled with air that will compress when a surge of water is introduced into the water line. An indication of water hammer is clanging or noisy pipes and perhaps fluctuations in water pressure.

A sensor on the front hood of the brewer, which reads what name and batch size of coffee was ground into the funnel and allows for the brewer to automatically set itself to what is read from the funnel handle.

Sets the inability to initiate a brew cycle if the funnel is not properly inserted into the funnel rails.

Technology that continuously monitors extract-to-water ratio and assures flavor consistency.

During a pulse brew, this is the time set for the initial flow of water over the grounds.

The factory preset brew settings that were installed into the brewer's memory.

Water-soluble materials dissolve and move out of the coffee grounds and into the water. Part of the brewing process that includes Wetting and Hydrolysis.

This is a simplified version of Pulse Brew. It is programmed by selecting the time period of brew water dispense. Easy Pulse allows the operator to input a set time for which the brewer software will determine a pulse sequence.

An exclusive design used in decanters to assure convenient serving with a drip-proof, fast pouring lip from front or either side.

Dynamic pressure is the measurement of moving water in a closed condition, such as in a water line.

A function used to reduce strength of a concentrate for cold beverages. Generally cold tap water is blended with tea or coffee concentrate.

The deliming tool is used to remove lime build up in the sprayhead, bypass port, and sprayhead fitting. This tool is used differently depending on what you are cleaning.

The deliming spring is used to remove lime build up in the sprayhead tube on machines that do not have dispense valves. To use this tool, remove the sprayhead and insert the spring into the sprayhead tube and use a sawing motion, back and forth to losen and remove the lime build up.

Digital Brewer Control, BUNN was among the first in the dispensed beverage industry to introduce advanced beverage technology to the industry with Digital Brewer Control systems that allow users to precisely and consistently meet specific flavor profiles while also reducing training and labor costs.

Technology used in BUNN super automatic espresso systems that perfectly foams cold milk for great tasting iced beverages.

A contactor is a heavy duty relay designed to handle switching large load components. This device is used in machines with multiple tank heaters or tank heaters that exceed 4000 watts. The contactor is energized by turning on the control thermostat, and supplies power to the tank heater(s).

Condenser fan moves air across the condenser coil and fins to increase the transfer of heat. Obstructing the flow of air will reduce efficiency of cooling but can lead to compressor failure.

Draws a vacuum or low pressure on the cooling side of the refrigerant cycle and compresses the gas into the high pressure or condensing side of the cycle. A compressor is one of the main components in the makeup of a refrigeration system.

Clamp-On Ammeters are the recommended tool used for testing current and perhaps the most convenient. It is a non-invasive procedure, you simply clamp the meter onto one wire at a time. If you grab two wires they will cancel each other out and you will get an incorrect reading.

A component that acts similarly to a battery, it stores an electric charge then releases it when required. This device is found most generally on our grinder motors and compressors.

An automated monitoring and communication system that detects pending service problems and forwards alerts for service.

A proportioning device, which pumps two liquids (water and concentrate) in an exact ratio. The ratio is determined by the pump design, and is maintained precisely. The pump operates on the source pressure of one of the proportioned liquids; typically the incoming water eliminating the need for CO2 or electric power. Vacuum shut off is designed within the brix pump when the concentrate bag-in-box is totally empty to stop operation of brix pump.

A programming feature that provides quick access to the most utilized setup parameters including a lockout feature to prevent brewing when actual water temperature is below the Ready temperature. Features include: brew lockout, brew ounces, enable ads, enter service number and BrewMETER®.

A programming feature with Radio Frequency Identification (RFID) communications between grinder, funnel and brewer for custom warmer and recipe management without error. Works in conjunction with SMART Hopper, SMART Funnel, and a Recipe Writer/Card.

A programming feature that simplifies Pulse Brew and allows extraction manipulation with the touch of a button.

A programming feature that compensates for flow-rate variations to maintain consistent dispense levels when water quality is a consideration.

The basin wrench is a multi-function tool that is used to rebuild various solenoid valves.

A shaft assembly containing torsion springs while engaged to a motor shaft will flex depending upon thickness of the product during auger rotation.

Used either to pressurize the hot water tank or create turbulence in a brewing chamber during the brew process. Used in equipment such as SmartWAVE and trifecta.

An assembly consisting of computer chips and an instructional label. Used for loading advertising messages into the brewer.