Instruction/ maintenance manual of the product RL00006929 Bunn
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OL & RL (S/N RL00006929 & up) INST ALLA TION & OPERA TING GUIDE BUNN-O-MA TIC CORPORA TION POST OFFICE BO X 3227 SPRINGFIELD , ILLINOIS 62708-3227 PHONE: (217) 529-6601 F AX: (217) 529-664.
Page 2 32430 030912 BUNN-O-MA TIC COMMERCIAL PRODUCT WARRANTY Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows: 1) Airpots, thermal carafes, decanters, GPR servers, iced tea/coffee dispensers, MCP/MCA pod brewers thermal ser vers and Thermofresh servers (mechanical and digital)- 1 year parts and 1 year labor .
Page 3 00656.0001 CONTENTS Introduction ................................................................2 User Notices ...............................................................3 Electrical Requirements ...........................................
Page 4 ELECTRICAL REQUIREMENTS CAUTION - Do not connect the brewer to the power source until specified in Initial Set-Up. MODELS OL15 & 20 require 2-wire, grounded service rated 120 volts ac, 15 or 20 amp re- spectively , single phase, 60 Hz.
Page 5 P1478 PLUMBING REQUIREMENTS This brewer must be connected to a cold water system with operating pressure between 20 and 90 psi from a 1/2” or larger supply line. A shut-off valve should be installed in the line before the brewer . Install a regulator in the line when pressure is greater than 90 psi to reduce it to 50 psi.
Page 6 INITIAL SETUP CAUTION - The brewer must be disconnected from the power source throughout the initial setup, except when specified in the instructions. 1. Remove the top panel. 2. Rotate the control thermostat knob fully counterclockwise to the “OFF” position and replace the panel.
Page 7 OPERA TING CONTROLS A. On/Off Brew Station Warmer Switch Placing the switch in the upper position supplies power to the brew station warmer and enables brewing. Placing the switch in the lower position cuts power to the brew station warmer and stops brewing.
Page 8 COFFEE BREWING Start each brew cycle with an empty , clean, half-gallon decanter . 1. Insert a BUNN® filter into the funnel. 2. Pour the fresh coffee into the filter and level the bed of grounds by gently shaking. 3. Slide the funnel into the funnel rails.
Page 9 Problem Equipment will not operate. Brew cycle will not start. Probable Cause 1. No power or incorrect voltage 1. No water 2. Water Strainer 3. Water Level Switch and Overflow Safety Switch Remedy (A) Connect the brewer to the power source. (B) Check the terminal block for the proper voltages.
Page 10 TROUBLESHOOTING (cont.) Problem Brew cycle will not start. (cont.) Water flows into fill basin continu- ously (On/Off brew station warmer switch “OFF”). Water flows into fill basin continu- ously (On/Off brew station warmer switch “ON”).
Page 11 TROUBLESHOOTING (cont.) Problem Spitting or unusual steaming from sprayhead. Warmer plates too hot, solenoid coil smoking, or water in tank heats excessively fast. Inconsistent beverage level in de - canter . Dripping from sprayhead. Probable Cause 1.
Page 12 TROUBLESHOOTING (cont.) Problem Beverage overflows decanter . Weak beverage. Brewer is making unusual noises. Probable Cause 1. Beverage left in decanter 1. T ype of paper filters 2. Coffee 3. Sprayhead 4. Funnel loading 5. Water temperature 1.
Page 13 FIG. 1 ACCESS P ANELS SERVICE This section provides procedures for testing and replacing various major components used in this brewer should service become necessar y . Refer to T roubleshooting for assistance in determining the cause of any problem.
Page 14 FIG. 2 CONTROL THERMOST A T FIG. 3 THERMOST A T WIRING SERVICE (cont.) Control Thermostat Location: The control thermostat is located under the top cover or top warmer housing, FIG. 2. T o test the control thermostat, access will also be needed to the tank heater located in the bottom of the tank assembly .
Page 15 FIG. 4 WARMERS FIG. 5 WARMERS FIG. 6 WARMER WIRING SERVICE (cont.) Warmer(s) OL: Brew Station & Upper RL: Left Rear , Left Front, Brew Station, Right Rear & Right Front Location: OL: One of the warmers is beneath the brew funnel and the other is on the top lid, FIG.
Page 16 FIG. 7 WARMER SWITCHES FIG. 8 WARMER SWITCHES FIG. 9 WARMER SWITCH WIRING SERVICE (cont.) Warmer Switch(es) OL: On/Off Brew Station & Upper RL: On/Off Brew Station If voltage is present as described, proceed to #4. If voltage is not present as described, refer to the Wir - ing Diagrams and check the brewer wiring harness.
Page 17 SERVICE (cont.) Warmer Switch(es) RL: Left Rear , Left Front, Right Rear & Right Front FIG. 10 WARMER SWITCHES Location: These warmer switches are the two at the left and the left most one on the right of the base as viewed from the front, FIG.
Page 18 FIG. 13 ST ART SWITCH - MODEL RL FIG. 12 ST ART SWITCH - MODEL OL FIG. 14 ST ART SWITCH WIRING SERVICE (cont.) Start Switch Location: The start switch is located in the base, below and to the right of the brew station, FIG.s 12 & 13. T est Procedure: 1.
Page 19 FIG. 17 INDICA TOR LAMP WIRING FIG. 15 INDICA TOR LAMPS - MODEL OL FIG. 16 INDICA TOR LAMP - MODEL RL SERVICE (cont.) Indicator Lamp(s) 4. Disconnect the brewer from the power source. If voltage is present, the indicator lamp is operating properly .
Page 20 FIG. 18 LIMIT THERMOST A T FIG. 19 LIMIT THERMOST A T WIRING SERVICE (cont.) Limit Thermostat 4. Check for continuity across the limit thermostat terminals. If continuity is present as described, the limit thermo- stat is operating properly . If continuity is not present as described, replace the limit thermostat.
Page 21 FIG. 20 SOLENOID V AL VE FIG. 21 SOLENOID V AL VE WIRING SERVICE (cont.) Solenoid Valve 4. Check the solenoid valve for coil action. Connect the brewer to the power sour ce, place the On/Off brew station warmer switch in the upper posi- tion, press and release the start switch.
Page 22 SERVICE (cont.) Relay FIG. 22 RELA Y P1478 Location: The relay is located under the top cover or top warmer housing, FIG. 22. T est Procedure: 1.
Page 23 FIG. 23 T ANK HEA TER FIG. 24 T ANK HEA TER WIRING SERVICE (cont.) T ank Heater Removal and Replacement: 1. Disconnect the brewer from the power source. 2. Remove the top cover or top warmer housing and the rear access panel. 3. Disconnect the wires to the tank heater .
Page 24 SERVICE (cont.) Water Level and Overflow Safety Switch FIG. 25 WA TER LEVEL and OVERFLOW SAFETY SWITCHES P1478 Location: The water level and overflow safety switches are lo- cated under the top cover or top warmer housing and inside and front of the tank fill basin, FIG.
Page 25 FIG. 28 MASTER ON/OFF SWITCH - MODEL RL FIG. 27 MASTER ON/OFF SWITCH - MODEL OL P1712 P1713 FIG. 29 MASTER ON/OFF SWITCH WIRING Location: The Master ON/OFF switch is located in the base, at the left rear , FIG.s 27 & 28. T est Procedure: 1.
Page 26 WHI/VIO BREW SW BLK BLK BLU LIMIT THERMOS TAT SW . & THERMOS TAT BLK WHI BLK GREEN SCHEMA TIC WIRING DIAGRAM OL 35 BLK WHI P2 & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR.
Page 27 WHI/VIO BREW SW BLK BLK BLU LIMIT THERMOSTAT SW. & THERMOSTAT L1 BLK WHI BLK GRN/YEL SCHEMATIC WIRING DIAGRAM OLA L2 BLK RED 10651.0000C 10/98 © 1990 BUNN-O-MATIC CORPORATION 220-240 VOLT.
Page 28 BREW SW BLK WHI BLK SCHEMATIC WIRING DIAGRAM OL25B BLK P2 & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR. 100 VOLTS AC 2 WIRE SINGLE PHASE 50/60 HZ BLK BLK BLK P3 WHI WHI-12 WHI WHI-12 WHI WHI WHI WHI P2 WHI BLK LEVEL SW PNK BLU SOL K1 P3 P1 P2 BLK BLU WHI P3 P1 P2 BLU WHI K1 N.
Page 29 WHI/VIO BREW SW BLK BLK BLU LIMIT THERMOST AT BLK BLK GREEN SCHEMA TIC WIRING DIA GRAM OL35B BLK RED P2 & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR.
Page 30 BLU LIMIT THERMOS TAT SW . & THERMOS TAT T ANK HEA TER BLK BLK BLK 32424.0000B 01/07 © 2007 BUNN-O-MA TIC CORPORA TION GRN SCHEMA TIC WIRING DIAGRAM RL RED WHI BLK BLK WHI BLK BLK WHI BLK.
Page 31 LIMIT THERMOSTAT BLU BLK BLK 32422.0000A 10/99 © 1999 BUNN-O-MATIC CORPORATION GRN/YEL SCHEMATIC WIRING DIAGRAM RLA L2 L1 RED 220-240 VOLTS AC 2 WIRE SINGLE PHASE BLK BLK RED RED WHI WHI TANK HEATER "KEEP WARM" HEATER INDICATOR SW. & THERMOSTAT BREW STATION WARMER BLK BLK PNK BR.
Page 32 SCHEMATIC WIRING DIAGRAM RL35B WHI/VIO SOL BLK WHI VIO BR. RECT OPTIONAL LOW WATER PRESSURE VALVE BLU LIMIT THERMOSTAT BLK L1 BLK 32421.0000A 10/99 © 1999 BUNN-O-MATIC CORPORATION GREEN L2 RE.
An important point after buying a device Bunn RL00006929 (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 RL00006929 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 RL00006929 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bunn RL00006929 you will learn all the available features of the product, as well as information on its operation. The information that you get Bunn RL00006929 will certainly help you make a decision on the purchase.
If you already are a holder of Bunn RL00006929, 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 RL00006929.
However, one of the most important roles played by the user manual is to help in solving problems with Bunn RL00006929. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bunn RL00006929 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
