Bunn C Manuel d'utilisateur

SERVICE & REPAIR MANUALBUNN-O-MATIC CORPORATIONPOST OFFICE BOX 3227SPRINGFIELD, ILLINOIS 62708-3227PHONE: (217) 529-6601 FAX: (217) 529-6644417

Page 10SERVICE This section provides procedures for testing and replacing various major components used in this brewer should service become necessar

Page 11SERVICE (cont.)OPTIONAL ELECTRONIC THERMOSTAT (ERT):The ERT is located inside the trunk on the upper left side of the component bracket.Test Pr

Page 12Location: The ON/OFF switch(s) are located on the front of the hood.Test Procedure:1. Disconnect the brewer from the power source.2. Viewing

Page 13SERVICE (cont.)START SWITCHESLocation: CRT/CRTF On brewers w/out fresh light, the start switch is located in the right front of the hood. On

Page 14SERVICE (cont.)SOLENOID VALVESLocation: The solenoid valve is located inside the trunk on the lower center part of the component bracket.Test

Page 1541711.1 052009120VAC-1.18K240VAC-3.76K120VAC - 247 240VAC - 757 120VAC - 334 SERVICE (cont.)SOLENOID VALVESDisassembly:1. Use of the bas

Page 16SERVICE (cont.)TANK HEATERLocation: The tank heater is located inside the tank and secured to the tank lid.Test Procedures:1. Disconnect the

Page 171800W-120V 7.40 - 8.70 1850W-220V 24.40 -28.40 3500W-200V 10.70 -12.36 3500W-240V 15.36 -17.90

Page 18SERVICE (cont.)TANK HEATER SWITCHLocation: The tank heater switch is located on the rear of the brewer on the upper left side of the trunk.Tes

Page 19SERVICE (cont.)TANK HEATER SWITCH (cont.)FIG.19-1TANKHEATERSWITCHTERMINALS15. Set tank assembly inside the hood on mounting brackets and

Page 241711.1 030912BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTYBunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows:1) Airpots, t

Page 20Location: The thermal cut-off (TCO) is a thermal fuse located above the tank lid, connected to the tank heater.NOTE: Installed only on tanks w

Page 21SERVICE (cont.)41711.1 052009COIL/FAUCETLocation: The coil for the faucet is located in the tank. Operation:Water inside the coil is separate

Page 22SERVICE (cont.)41711.1 052009LIMIT THERMOSTATLocation: The limit thermostat is located inside the rear ofthe hood on the tank lid.Test Procedu

Page 23RECOVERY BOOSTER RELAY (OPTIONAL)FIG. 23-1 RECOVERY BOOSTER RELAYLocation The recovery booster(s) are located inside the trunk on the center o

Page 24SERVICE (cont.)TIMER (Early Models) Location: The timer is located inside the front of the trunk on the upper right side of component bracket.

Page 25SERVICE (cont.)FRESHNESS TIMER (Early Models)Location: The freshness timer is located inside the front of the trunk on the component bracket.O

Page 26DIGITAL BREW TIMER (Late Models) FIG. 26-1 DIGITAL BREW TIMERSERVICE (cont.)Location: The timer is located inside the front of the trunk on th

Page 27Timer Setting:NOTE: Prior to setting or modifying volumes, check that the brewer is connected to water supply, the tank is properly filled, and

Page 28WARMER ELEMENT(S)Location: The warmer element(s) is located under the warmer plate.Test Procedures:1. Disconnect the brewer from the power s

Page 29L1BLKWHIBLKBLKBLKBLKBLK VIOBRN/BLKYELWHI/VIOLEFT FRONTWARMERLEFT REARWARMERRIGHT FRONTWARMERRIGHT REARWARMERBLK BLKTANK HEATERWHI (MODEL 20)NL2

Page 341711.1 052009 ContentsTrouble Shooting ...

Page 30L1BLKBLKBLKBLKBLKBLKBRN/BLKYELVIOWHI/VIOWHI/REDWHI/REDWHI/REDWHI/BLUREDREDREDREDREDREDREDWHI/GRNBREWTIMERT1 T5 T3T4T2BLUSTART SWITCHWHIBLK BLKG

Page 31L1BLKBLK WHI/REDWHI/REDWHI/REDBLKYELWHI/VIOBRN/BLKVIOBLKBLKBLKLOWER CENTER WARMERON/OFF SWITCHON/OFF SWITCHON/OFF SWITCHON/OFF SWITCHON/OFF SWI

Page 3210693.0000G 02/07 © 1993 BUNN-O-MATIC CORPORATION120/240 VOLTS AC 3 WIRE 120 VOLTS AC 2 WIRE SINGLE PHASE BREWTIMERWHIWHIWHIWHI/BLUWHI/GRN

Page 33 AUXILIARY OUTLET (200 WATT MAXIMUM)BLKE.R.TASSY.120/240 VOLTS AC 3 WIRE120 VOLTS AC 2 WIRESINGLE PHASEP1, P2, & P3 ARE PINS OF APOLARIZE

Page 34SCHEMATIC WIRING DIAGRAM FOR CWT-APS MV, CWTF-APS MV, CWTF-TS MV, CWTF-TSR MV41711.1 052009

Page 3541711.1 052009

Page 3641711.1 052009

Page 3741711.1 052009

Page 38BLK41711.1 052009

Page 3941711.1 052009

Page 4TROUBLESHOOTINGA troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered. If the pro

Page 40WHI/RED LEFT LOWER WARMERWHI/REDWHI/GRNP1-2P1-3P4-2P4-3SCHEMATIC WIRING DIAGRAMCWT/CWTF TWIN 0/2, 2/2, 4/2 & CWT TWIN-APS(FAUCET)THERMALSA

Page 41WHI/RED LEFT LOWER WARMERWHI/REDWHI/GRNP1-2P1-3P4-2P4-3SCHEMATIC WIRING DIAGRAMCWT/CWTF TWIN 0/2, 2/2, 4/2 & CWT TWIN-APS(FAUCET)THERMALSA

Page 42WHI/REDWHI/GRNP1-2P1-3P4-2P4-3SCHEMATIC WIRING DIAGRAM CWTFA TWIN 2/2 & 4/2L1GRN/YELL2 L3RIGHT TANK HEATERBLK BLURT. READY INDICATORRT. SW.

Page 43BLK WHI/REDWHI/GRNP1-2P1-3P4-2P4-3SCHEMATIC WIRING DIAGRAMCWTFA & CWTFB TWIN 2/2 & 4/2L1GRN/YELL2(FAUCET)THERMAL FUSEBLKRIGHT TAN

Page 44BLK WHI/REDWHI/GRNP1-2P1-3P4-2P4-3SCHEMATIC WIRING DIAGRAMCWTFA 2/2 TWIN, CWTFA 4/2 TWIN & CWTFA TWIN-APS L1 L210736.0004A 02/06 © 2006

Page 45SCHEMATIC WIRING DIAGRAMCWTFA TWIN-APS CEL1GRN/YELL2BLK10736.0005B 08/07 © 2007 BUNN-O-MATIC CORPORATION230 VOLTS AC 2 WIRE + GNDSINGLE

Page 46GRYPINL.E.D.L.E.D.GRYPINGRYPINOPTIONALINDICATORTIMERWHI/REDWHI/GRNP1-2P1-3SCHEMATIC WIRING DIAGRAM CWTF TWIN 0/6(FAUCET)BLKBLKRIGHT TANK HEATER

Page 47WHI/BLUP3BLKP1, P2, & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR.BLUBLU/BLKWHIBREWTIMERP1P2WHIOPTIONAL AUTOMATIC BREW CIRCUITSCHEMATIC

Page 48P3P1, P2, & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR.BLUP1REDOPTIONAL AUTOMATIC BREW CIRCUITSCHEMATIC WIRING DIAGRAM CWTB10836.0002E

Page 49P3P1, P2, & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR.BLUP1REDOPTIONAL AUTOMATIC BREW CIRCUITSCHEMATIC WIRING DIAGRAM CWTA10836.0003E

Page 5TROUBLESHOOTING (cont.)Brew cycle will not start (cont.) Water is not hotPROBABLE CAUSEREMEDY3. ON/OFF Switch4. Start Switch5. Timer6. Solenoid

Page 50P1, P2, & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR.SOLBREWTIMERREDRED10836.0004H 10/02 ©1997 BUNN-O-MATIC CORPORATION P2P1

Page 5120AMPT1T5 T3 T4T241711.1 052009

Page 52P3BLKP1, P2, & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR.WHIBLKSOLBLU BLUWHIBREWTIMERP1P2WHIOPTIONAL AUTOMATIC BREW CIRCUITSCHEMATIC W

Page 53READY INDICATORBLKBLUSW. & THERMOSTATP3BLKP1, P2, & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR.WHIBLKSOLBLU BLUWHIBREWTIMERP1P2WHIO

Page 54T1T5 T3 T4T2BLK-14 BLK-14120V AC 2 WIRE120/208V AC 3 WIRE120/240V AC 3 WIRESINGLE PHASEWHI-14WHIWHIWHIWHI/REDWHI/REDWHI/REDWHIWHIWHIWHIWHIWHIW

Page 55T1T5 T3 T4T2BLK-14 BLK-14120V AC 2 WIRE120/208V AC 3 WIRE120/240V AC 3 WIRESINGLE PHASEWHI-14WHIWHIWHI/REDWHI/REDWHIWHI/GRNWHI/BLUWHI/VIO-14BL

Page 56BLUWHIBREWTIMERSCHEMATIC WIRING DIAGRAMSINGLE CW10836.0011B 01/03 ©2003 BUNN-O-MATIC CORPORATIONWHIWHIWHIWHIBLKWHI/REDLOWER WARMERSTART S

Page 57BLKWHIREDBLUTANK HEATERBLKLIMITTHERMOSTATLIMITTHERMOSTATSW1-LSW1-R(FAUCET SIDE)"KEEP WARM" HEATERSCHEMATIC WIRING DIAGRAMCWTF TWIN 4/

Page 58P4-2P4-3SCHEMATIC WIRING DIAGRAM CWT TWIN 2/2 & 4/2 W/RECOVERY BOOSTERREDWHIWHIWHILEFT TOP WARMERRIGHT TOP WARMERWHIP4-1YEL YELWHI/YEL WHI/

Page 59WHI/REDWHI/GRNP1-2P1-3SCHEMATIC WIRING DIAGRAM CWTF TWIN 0/6 WITH RECOVERY BOOSTERL1GREEN(FAUCET)THERMALSAFETY FUSEBLKBLKRIGHT TANK HEATERBLKBL

Page 6TROUBLESHOOTING (cont.)Inconsistent beverage level in dispenserConsistently low beverage level in the dispenser Spitting or excessive steaming1.

Page 7TROUBLESHOOTING (cont.)Spitting or excessive steaming (cont.)Dripping from sprayheadWater flows into tank continu-ously (ON/OFF Switch "ON&q

Page 8TROUBLESHOOTING (cont.)Weak beverageDry coffee grounds remain in the funnelBrewer is making unusal noises 1. Filter Type2. Coffee Grind3. Sprayh

Page 9TROUBLESHOOTING (cont.)Brewer is making unusal noises (cont.)Low beverage serving tempera-ture4. Tank Heater1. Warmer2. ON/OFF Switch Remove an