Instruction/ maintenance manual of the product TNT-3 Bunn
Go to page of 30
BUNN-O-MA TIC CORPORA TION TNT -3 TNTF-3 POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 TELEPHONE: (217) 529-6601 FAX: (217) 529-6644 28201.0000C 8/00 © 1997 Bunn-O-Matic Corporation OPERA TIN.
Page 2 CONTENTS Introduction ............................................................. 2 Warranty .................................................................. 2 User Notices ............................................................ 3 Electrical Requirements .
Page 3 #00831.0000 #00656.0000 #03408.0000 #03409.0000 USER NOTICES Carefully read and follow all notices on the equipment and in this manual. They were written for your protection. All notices on the equipment should be kept in good condition. Replace any unreadable or damaged labels.
Page 4 ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power sour ce until specified in Initial Set-Up. 120V model brewers require 2-wire, grounded ser vice rated 120 volt ac, 15 amp, single phase, 60 Hz. 120/208V model brewers require 3-wire, grounded service rated 120/ 208 volt, 20 amp, single phase, 60 Hz.
Page 5 1. Remove the shipping cap(s) from the bulkhead fitting(s) on the rear of the brewer . 2. Attach the flare fitting from the short piece of tubing on the strainer/flow control (supplied) to the water inlet fitting(s) at the rear of the brewer . 3.
Page 6 13. Empty the dispenser . 14. Plug in the brewer and wait for the water in the tank to heat to brewing temperature (approximately 20 minutes). Some water will drip from the funnel during this time; this is due to expansion and should not occur thereafter .
Page 7 CLEANING CAUTION – Do not keep brewed tea overnight. Clean and sanitize your iced tea dispenser daily 1. Remove and thoroughly clean the brew funnel. The funnel tip and screen must be free from any tea particles or residue. Reassemble the funnel.
Page 8 TROUBLESHOOTING A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic T echnical Service Department.
Page 9 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Brew cycle(s) will not start (cont.) Brew water is not hot Dilution (Iced T ea) cycle will not start 6. Brew T imer A) Iced T ea B) Hot T ea 7. Brew Solenoid Valve A) Iced T ea B) Hot T ea 8.
Page 10 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Dilution (Iced T ea) cycle will not start (cont.) Inconsistent beverage level in dispenser (Hot T ea) Consistently high or low beverage level in the dispenser 2. Start Switch 3. Brew T imer (Iced T ea) 4.
Page 11 TROUBLESHOOTING (cont.) PROBLEM Consistently high or low beverage level in the dispenser . (cont.) Spitting or excessive steaming Drip-out time too long Dripping from sprayhead PROBABLE CAUSE 2.
Page 12 TROUBLESHOOTING (cont.) PROBLEM Water flows into tank continuously (ICED/OFF/HOT Switch in the "ICED or "HOT" position) Water flows into tank continuously (ICED/OFF/HOT Switch in the "OFF" position) Beverage overflows dispenser PROBABLE CAUSE 1.
Page 13 REMEDY BUNN ® paper filters must be used for proper extraction. A sufficient quantity of fresh, loose tea leaves should be used for proper extraction. A six-hole stainless steel spray- head must be used for proper ex- traction. The BUNN ® paper filter must be cen- tered in the funnel and the bed of tea leaves leveled by gentle shaking.
Page 14 SERVICE This section provides procedures for testing and replacing various major components used in this brewer should service become necessar y .
Page 15 Location: Viewing the brewer from the rear, the hot tea brew solenoid valve is mounted on the left side of the mounting bracket. Test Procedures: 1. Disconnect the brewer from the power source. 2. Disconnect the white/red and white/green wires from the hot tea solenoid valve.
Page 16 P1391.60 FIG. 4 ICED TEA BREW SOLENOID V AL VE Location: Viewing the brewer from the rear, the iced tea brew solenoid valve is mounted in the center of the mount- ing bracket. Test Procedures: 1. Disconnect the brewer from the power sour ce. 2.
Page 17 Location: The hot tea brew timer is located in the hood on the left side. It consists of a dial plate and circuit board. T est Pr ocedure: 1. Disconnect the brewer from the power sour ce. 2. Remove the wires from terminals TL3, TL4, & TL5 of the timer and rotate the dial fully counter clock- wise.
Page 18 SERVICE (cont.) 28201 081500 BREW TIMER (HOT TEA - LA TE MODELS) Location: The hot tea brew timer is located in the hood, on the left side. Test Procedure. NOTE: Do not remove or install wires while timer board is installed. Pressure applied to one side may cause damage to the board.
Page 19 SERVICE (cont.) 28201 081500 BREW TIMER (HOT TEA - LA TE MODELS)(cont.) 1. Modifying brew volumes. T o modify a brew vol- ume, first check that the SET/LOCK switch is in the “ SET ” position on the cir cuit board.
Page 20 Location: The iced tea brew timer is located in the hood on the right side. It consists of the dial plate and circuit board. T est Pr ocedure: 1. Disconnect the brewer from the power sour ce. 2. Remove the wires from terminals TL3, TL4, & TL5 of the iced tea timer and rotate the dial fully coun- ter clockwise.
Page 21 SERVICE (cont.) BREW TIMER (ICED TEA - LA TE MODELS) Location: The timer is located in the hood on the right side. Test Procedure. NOTE: Do not remove or install wires while timer board is installed. Pressure applied to one side may cause damage to the board.
Page 22 1. Modifying brew volumes. T o modify a brew vol- ume, first check that the SET/LOCK switch is in the “ SET ” position on the cir cuit board. T o increase a brew volume, place the ON/OFF switch in the “ ON ” position, press and hold the ST ART switch until three clicks are heard.
Page 23 B U N N BUNN OFF OFF H I HI Location: The control thermostat is located inside hood on the right side just behind the iced tea brew timer. Test Procedures: 1.
Page 24 SERVICE (cont.) DILUTION SOLENOID V AL VE FIG. 16 DILUTION SOLENOID V AL VE P1391.60 Location: Viewing the brewer from the rear the dilution so- lenoid is mounted on the right side of the solenoid mounting bracket which is secured to the trunk base.
Page 25 SERVICE (cont.) LIMIT THERMOST A T FIG. 18 LIMIT THERMOST A T P2213.60 Location: The limit thermostat is located inside the hood on the tank lid. T est Pr ocedure: 1. Disconnect the brewer from the power sour ce and remove the black wire from the limit thermostat.
Page 26 FIG.21 ICED/OFF/HOT SWITCH TERMINALS P1367 SERVICE (cont.) ICED/OFF/HOT SWITCH FIG. 20 ICED/OFF/HOT SWITCH P1370.40 Location: The ICED/OFF/HOT switch is located in the front of the hood, above and to the left of the brew funnel. T est Pr ocedure: 1.
Page 27 SERVICE (cont.) ST ART SWITCH FIG. 22 ST ART SWITCH P1370.40 Location: The start switch is located in the front of the hood, above and to the right of the brew funnel. T est Pr ocedure: 1. Disconnect the brewer from the power sour ce. 2. Remove the wires from all four terminals.
Page 28 FIG. 24 T ANK HEA TER Location: The tank heater is located inside the tank and se- cured to the tank lid. T est Pr ocedures: 1. Disconnect the brewer from the power supply . 2. With a voltmeter , check the voltage across the black and white wires on 120 volt models or the black and red wires for 120/208 volt models with a voltmeter .
Page 29 SERVICE (cont.) THERMAL FUSE (Models W/Faucet Only) FIG. 26 THERMAL FUSE P2213.60 Location: The thermal fuse is located inside the hood con- nected to the right tank heater terminal. T est Pr ocedures: 1. Disconnect the brewer from the power sour ce.
Page 30 28201 081598.
An important point after buying a device Bunn TNT-3 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Bunn TNT-3 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Bunn TNT-3 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bunn TNT-3 you will learn all the available features of the product, as well as information on its operation. The information that you get Bunn TNT-3 will certainly help you make a decision on the purchase.
If you already are a holder of Bunn TNT-3, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Bunn TNT-3.
However, one of the most important roles played by the user manual is to help in solving problems with Bunn TNT-3. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bunn TNT-3 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
