Bunn OL Service Manual

OL & RL10020.0000F 3/00 © 1989 BUNN-O-MATIC CORPORATIONBUNN-O-MATIC CORPORATIONPOST OFFICE BOX 3227SPRINGFIELD, ILLINOIS 62708-3227PHONE:

Page 10TROUBLESHOOTING (cont.)ProblemSpitting or unusual steaming fromsprayhead.Warmer plates too hot, solenoid coilsmoking, or water in tank heats ex

Page 11TROUBLESHOOTING (cont.)ProblemBeverage overflows decanter.Weak beverage.Brewer is making unusual noises.Probable Cause1. Beverage left in decan

Page 12WARNING!HIGH HEAT WARMERDO NOT BOIL DECANTER DRYKEEP COMBUSTIBLES AWAYFAILURE TO COMPLY RISKSGLASS FAILURE/HOT LIQUIDBURNS AND FIRE HAZARDCAUTI

Page 13FIG. 2 CONTROL THERMOSTATFIG. 3 THERMOSTAT WIRINGSERVICE (cont.)Control ThermostatLocation:The control thermostat is located under the topcover

Page 14WARNING!HIGH HEAT WARMERDO NOT BOIL DECANTER DRYKEEP COMBUSTIBLES AWAYFAILURE TO COMPLY RISKSGLASS FAILURE/HOT LIQUIDBURNS AND FIRE HAZARDCAUTI

Page 15FIG. 7 THREE HEAT WARMERFIG. 8 THREE HEAT WARMER WIRINGSERVICE (cont.)WarmerRL: Right Rear Three HeatIf continuity is present as described, pro

Page 16CAUTIONDISCARD DECANTERIF:. CRACKED. SCRATCHED. BOILED DRY . HEATED WHEN EMPTY. USED ON HIGH FLAME. OR EXPOSED ELECTRIC ELEMENTSFAILURE TO COM

Page 17WARNING!HIGH HEAT WARMERDO NOT BOIL DECANTER DRYKEEP COMBUSTIBLES AWAYFAILURE TO COMPLY RISKSGLASS FAILURE/HOT LIQUIDBURNS AND FIRE HAZARDCAUTI

Page 18WARNING!HIGH HEAT WARMERDO NOT BOIL DECANTER DRYKEEP COMBUSTIBLES AWAYFAILURE TO COMPLY RISKSGLASS FAILURE/HOT LIQUIDBURNS AND FIRE HAZARDCAUTI

Page 19CAUTIONDISCARD DECANTERIF:. CRACKED. SCRATCHED. BOILED DRY . HEATED WHEN EMPTY. USED ON HIGH FLAME. OR EXPOSED ELECTRIC ELEMENTSFAILURE TO COM

Page 2CONTENTSIntroduction... 2User Notices ...

Page 20WARNING!HIGH HEAT WARMERDO NOT BOIL DECANTER DRYKEEP COMBUSTIBLES AWAYFAILURE TO COMPLY RISKSGLASS FAILURE/HOT LIQUIDBURNS AND FIRE HAZARDCAUTI

Page 21FIG. 22 LIMIT THERMOSTATFIG. 23 LIMIT THERMOSTAT WIRINGSERVICE (cont.)Limit Thermostat4. Check for continuity across the limit thermostattermin

Page 22FIG. 24 SOLENOID VALVEFIG. 25 SOLENOID VALVE WIRINGSERVICE (cont.)Solenoid Valve4. Check the solenoid valve for coil action. Con-nect the brew

Page 23BUNNOFFHISERVICE (cont.)RelayFIG. 26 RELAYP1478Location:The relay is located under the top cover or top warmerhousing, FIG. 26.Test Procedure:1

Page 24FIG. 27 TANK HEATERFIG. 28 TANK HEATER WIRINGSERVICE (cont.)Tank HeaterRemoval and Replacement:1. Disconnect the brewer from the power source.2

Page 25BUNNOFFHISERVICE (cont.)Water Level and Overflow Safety SwitchFIG. 29 WATER LEVEL and OVERFLOWSAFETY SWITCHESP1478Location:The water level and

Page 26WHI/VIOBREW SWBLKBLKBLULIMITTHERMOSTATSW. &THERMOSTATNL1BLKWHIBLKGREENSCHEMATIC WIRING DIAGRAM OLL2BLKWHIP2 & P3 ARE PINS OF APOLARIZED

Page 27WHI/VIOBREW SWBLKBLKBLULIMITTHERMOSTATSW. &THERMOSTATL1BLKBLKGRN/YELSCHEMATIC WIRING DIAGRAM OLAL2BLKRED10651.0000B 10/98 © 1994 BU

Page 28BREW SWBLKWHIBLKSCHEMATIC WIRING DIAGRAM OL25BBLKP2 & P3 ARE PINS OF APOLARIZED THREE-PINCONNECTOR. 100 VOLTS AC2 WIRESINGLE PHASE50/60 HZB

Page 29WHI/VIOBREW SWBLKBLKBLULIMITTHERMOSTATL1BLKBLKGREENSCHEMATIC WIRING DIAGRAM OL35BL2BLKREDP2 & P3 ARE PINS OF APOLARIZED THREE-PINCONNECTOR.

Page 300656.000000688.0000Fill water tank before turning -onthermostat or connecting applianceto power source.Do not use near combustibles.Follow nati

Page 30BLULIMITTHERMOSTATSW. &THERMOSTATTANK HEATERNBLKL1BLK10006.0000D 10/98 © 1990 BUNN-O-MATIC CORPORATIONGREENSCHEMATIC WIRING DIAGRAM

Page 31LIMITTHERMOSTATBLU BLKL1BLK10652.0000B 10/98 © 1994 BUNN-O-MATIC CORPORATIONGRN/YELSCHEMATIC WIRING DIAGRAM RLAL2RED220-240 VOLTS AC2

Page 32SCHEMATIC WIRING DIAGRAM RL25BREDBLK BLKREDBLK BLKREDBLK BLKLEFT FRONT WARMERRIGHT FRONT WARMERLEFT REAR WARMERRIGHT REAR WARMER213OFFLOWHIGHNL

Page 33SCHEMATIC WIRING DIAGRAM RL35BWHI/VIOSOLBLKWHIVIOBR. RECTOPTIONAL LOW WATER PRESSURE VALVEBLULIMITTHERMOSTATBLKL1BLK10640.0000B 10/98 © 19

Page 4BUNNOFFHIELECTRICAL REQUIREMENTSCAUTION - Do not connect the brewer to the power source until specified in Initial Set-Up.MODELS OL15 & 20 r

Page 5PLUMBING REQUIREMENTS (Cont.)Plumbing Hook-UpModel OL15 has an attached water strainer, proceed to step 2.Models OL20, OL35, & RL35, proceed

Page 6WARNING!HIGH HEAT WARMERDO NOT BOIL DECANTER DRYKEEP COMBUSTIBLES AWAYFAILURE TO COMPLY RISKSGLASS FAILURE/HOT LIQUIDBURNS AND FIRE HAZARDCAUTIO

Page 7COFFEE BREWINGStart each brew cycle with an empty, clean, half-gallon decanter.1. Insert a BUNN® filter into the funnel.2. Pour the fresh coffee

Page 8ProblemEquipment will not operate.Brew cycle will not start.Probable Cause1. No power or incorrect voltage1. No water2. Water Strainer3. Water L

Page 9TROUBLESHOOTING (cont.)ProblemBrew cycle will not start. (cont.)Water flows into fill basin continu-ously (On/Off brew station warmerswitch &quo