BUNN® TECHNICAL TRAINING Smar tWAVE®
Index Unit 1: Installation Site Requirements............................................................................................................... 4 Location of the Serial Number........................................................................................... 4 Water Supply Install............................................................................................................ 4 Electrical Install..................................................................................
Unit 1 Installation Unit Objectives Given a realistic scenario depicting a new site install, the learner will be able to install and setup the brewer for retail turnover without error. Given a new machine, all the necessary tools and safety equipment, the learner will be able to install the brewer without error. The learner will be able to verify that the site requirements have been met. The learner will be able to locate and document the serial number.
Installation Site Requirements Space • • • • Height clearance of 19” Footprint able to accommodate 10” W x 18” D Counter able to support 25lbs Level installation surface, brewer level on the surface Water Treatment • • • • Sediment filtration to reduce large particles Taste and odor filter to remove chlorine Scale filtration as needed For best results a BUNN® Easy Clear® filtration system should be used Plumbing • • • • .75-11.
Electrical Install An electrician must provide electrical service as specified in conformance with all local, state, and federal electrical codes. The SmartWAVE® brewer is available as either a 120VAC or 120/208-120/240VAC configured unit. Ensure the location has the appropriate electrical requirements for the brewer being installed. Always refer to the brewer’s data plate for electrical specifications. For 120VAC Brewers: Step 1: Plug brewer into the power source.
Unit 2 Setup Unit Objectives Given a realistic scenario depicting a new site install, the learner will be able to install and setup the brewer for retail turnover without error. Given an installed machine, all the necessary tools and safety equipment, the learner will be able to set the machine up for initial operation. The learner will be able to power on the machine. The learner will be able to access and scroll through the programming options.
Setup and Programming Accessing and using the brewer’s programming features is done from the user interface panel and requires no special tools. Water volumes and flow settings for the SmartWAVE® brewer have been preset at the factory. The volumes can be increased or decreased and optional pulse brewing can be programmed. Additionally there are four programming dip switches located on the control board.
routines to choose from. Factory default is 1; with 14 being the maximum. Press BREW A to decrease or BREW B to increase. Step 3: Press and release the hidden switch until display reads A3. This represents the adjust mode Drip-Out Time for the A brew switch. The display will toggle between A3 and the setting. Press the BREW A button to decrease time or the BREW B button to increase time. Step 4: Repeat steps 1 -3 for setting the “B” brew switch.
1 4 2 3 TM 1 Enable Brew On/Off Switch 2 Small Brew Switch 3 Large Brew Switch 4 Status Indicator (LED) Step 1: Place an empty funnel in the funnel rails and an empty server beneath the funnel. Step 2: Press the ENABLE BREW ON/OFF switch placing it in the ON position. Step 3: Press and hold the small brew start switch until the LED indicator alternately flashes red/green (approximately 15 seconds). Release the switch.
Program Switches There are 4 dip switches located on the control board that control optional settings on the SmartWAVE® brewer. All of these switches are set to the OFF position from the factory. Function- Off position 1 Program Lockout Programming allowed Programming locked out 2 Brew Lockout Brew at any temperature Only brews at Ready temperature 3 Energy Save Energy save mode off Maintains 140° F after 6 hours, Off after 26 hours 4 High Altitude Set tank temp.
Unit 3 Machine Composition Unit Objectives Given a realistic scenario in which the learner has access to the machine’s internal components the learner will understand the composition and functions of the brewer. Given a realistic scenario requiring the learner to access the internal components of the machine the learner will be able to remove the shroud, top panel, and control board access panel. The learner will remove the shroud, top panel, and control board access panel.
Machine Composition 2 Exterior Overview Product Outlets and Removable Parts • • • • • 1 3 User interface (1) Hot water outlet (2) Sprayhead (3) Adjustable server base (4) Adjustable legs (5) User Interface 4 5 The SmartWAVE brewer control panel features membrane switches and an alphanumeric display. D E A B C ® TM A. B. C. D. E.
Machine Function and Operations Main Control Board The main control is the brain of the brewer. In a digital brewer, the control board is the single component that contains all of the programming software, it interprets all the data it receives from the level and temperature sensors and activates components to fulfill those demands. The main control board responds to the users input through the membrane switch or mechanical switches and activates and controls the brew cycle.
Dispensing System The dispensing system consists of: • Inlet valve • Brew tube • Sprayhead • Air pump • Vent valve When the operator initiates a brew cycle the inlet valve activates to fill the water tank, the cold incoming water in the bottom pushes the hot water on the top through the sprayhead tube. Once the tank is full the air pump turns on and the vent valve begins to cycle, this cycle actions creates varying pressure in the tank creating a wave action as the water is dispensed.
Unit 4 Preventive Maintenance Unit Objectives Given a realistic scenario depicting a machine requiring a preventive maintenance, the learner will be able to identify which elements of a component need to be serviced without error. Given a machine, all the necessary tools and safety equipment, the learner will be able to identify the components that need to be serviced for the PM.
Preventive Maintenance In order to maintain proper operation and long service life BUNN® recommends performing the preventative maintenance every 6 months. Individual customers will vary with some customers choosing not to receive preventative maintenance. Tools Required: • Flat blade screwdriver • Philips screwdriver • Adjustable wrench • Channel lock pliers • Needle nose pliers • Deliming spring (BUNN P/N: 01188.0000) • Deliming tool (BUNN P/N: 38227.
Unit 5 Troubleshooting Unit Objectives Given a realistic scenario depicting a broken machine, the learner will be able to effectively troubleshoot, diagnosis, and repair the problem returning the machine to normal operation. Given a machine displaying an error message, all the necessary tools and safety equipment, the learner will be able to diagnosis the problem. Given a list of error messages and issues, the learner will be to identify the probable cause of the message or issue.
Troubleshooting and Repair Draining the Tank Step 1: Disconnect the water and electrical supplies. Step 2: Remove the front cover. Step 3: Pinch off the fill hose. Step 4: Loosen the clamp from the fill solenoid. Step 5: Remove the hose from the solenoid and drain into a sink or bucket.
Filling System Brewer Not Filling Check the water supply to the brewer. Ensure that all valves are on, the water filter is not clogged, and that the supply line is not restricted in anyway. Remove the supply line from the water inlet and open the water supply into a bucket or sink to check water supply With the water supply line removed, remove the adapter fitting and pull out the strainer screen, check for build-up in the strainer screen and the flow control device.
Check for continuity through the high-limit thermostat. Check the resistance of the heating element. It should read approximately 10-11 ohms. Dispensing System Not Brewing During the brew process, the inlet solenoid valve receives approximately 120VAC from the control board, check voltage at the valve. Remove the wires from the valve and measure the resistance of the valve coil, it should read approximately 1400ohms.
