Instruction/ maintenance manual of the product OL Bunn
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OL & RL 32430.0000B 7/00 © 1999 BUNN-O-MATIC CORPORATION BUNN-O-MA TIC CORPORA TION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 F AX: (217) 529-6644 BU N N ® OPERA TING & SERVICE MANUAL C A U T IO N DISCARD DECANTER IF: .
Page 2 CONTENTS Introduction ............................................................... 2 User Notices .............................................................. 3 Electrical Requirements ............................................. 4 Plumbing Requirements .
Page 3 00656.0000 Fill water tank before turning -on thermostat or connecting appliance to power source. Do not use near combustibles. Follow national/local electrical codes. Electrically ground the chassis. Use only on a properly protected circuit capable of the rated load.
Page 4 B UN N O F F H I 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 PLUMBING REQUIREMENTS (Cont.) Plumbing Hook-Up Model OL15 has an attached water strainer , proceed to step 2. Models OL20, OL35, & RL35, proceed as follows: 1. Remove the rear panel and bottom pan. Run the long piece of tubing from the strainer (supplied) under the brewer and attach it to the water inlet fitting on the bottom bracket.
Page 6 W AR NIN G ! H I G H H E A T W A R M E R D O N O T B O IL D E C A N T E R D R Y K E E P C O M B U S T I B L E S A W A Y F A I L U R E T O C O M P L Y R I S K S G L A S S F A I L U R E /H O T L IQ U I D B U R N S A N D F I R E H A Z A R D CAUTION DISCARD DECANTER IF: .
Page 7 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 8 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 9 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 10 TROUBLESHOOTING (cont.) Problem Spitting or unusual steaming from sprayhead. Warmer plates too hot, solenoid coil smoking, or water in tank heats ex- cessively fast. Inconsistent beverage level in de- canter . Dripping from sprayhead. Probable Cause 1.
Page 11 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 temperatur e 1.
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Page 13 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 .
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Page 16 SERVICE (cont.) Warmer Switch(es) RL: Left Rear , Left Front, Right Rear & Right Front WARNING ! H I G H H E A T W A R M E R DO NO T B O I L DEC AN TER D R Y K EE P C O M B UST IBL ES A WAY FAI L U RE T O C O M P L Y R IS K S G L A SS F AI L UR E/H O T LI Q UID B UR NS AND F IRE HA Z ARD CAUTION D I S C A R D D E C A N T E R I F : .
Page 17 C A U T I O N D I S C A R D D E C A N T E R I F : . C R A C K E D . S C R A T C H E D . B O I L E D D R Y . H E A T E D W H E N E M P T Y . U S E D O N H I G H F L A M E .
Page 18 WARNING ! H IG H H E A T W A RM ER D O NOT BOIL D ECANTER DRY KEEP COMBUST IBLES AW AY FA IL U R E T O C O M P L Y RIS K S G L A S S F A IL UR E / HO T LIQ U ID BU R N S A N D F IR E H A Z AR D CAUTION D I S C A R D D E C A N T E R I F : . C R A C K E D .
Page 19 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 20 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. Con- nect the brewer to the power sour ce, place the On/Off brew station warmer switch in the upper position, press and release the start switch.
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Page 22 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 23 BU N N O F F H I.
Page 24 WHI/VIO BREW SW BLK BLK BLU LIMIT THERMOSTAT SW. & THERMOSTAT N L1 BLK WHI BLK GREEN SCHEMATIC WIRING DIAGRAM OL L2 BLK WHI P2 & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR.
Page 25 WHI/VIO BREW SW BLK BLK BLU LIMIT THERMOSTAT SW. & THERMOSTAT L1 BLK BLK GRN/YEL SCHEMATIC WIRING DIAGRAM OLA L2 BLK RED 10651.0000B 10/98 © 1994 BUNN-O-MATIC CORPORATION 220 -240 VOLTS A.
Page 26 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 27 WHI/VIO BREW SW BLK BLK BLU LIMIT THERMOSTAT L1 BLK BLK GREEN SCHEMATIC WIRING DIAGRAM OL35B L2 BLK RED P2 & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR.
Page 28 BLU LIMIT THERMOSTAT SW. & THERMOSTAT TANK HEATER N BLK L1 BLK 32424.0000A 10/99 © 1999 BUNN-O-MATIC CORPORATION GREEN SCHEMATIC WIRING DIAGRAM RL L2 RED WHI BLK BLK WHI BLK BLK WHI BLK B.
Page 29 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.
Page 30 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 OL (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 OL 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 OL - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bunn OL you will learn all the available features of the product, as well as information on its operation. The information that you get Bunn OL will certainly help you make a decision on the purchase.
If you already are a holder of Bunn OL, 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 OL.
However, one of the most important roles played by the user manual is to help in solving problems with Bunn OL. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bunn OL 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
