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Bunn System III manual SERVICE cont TRIAC/HEAT SINK ASSEMBLY DBC ONLY

Models: System III

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SERVICE (cont.)

SERVICE (cont.)

TRIAC/HEAT SINK ASSEMBLY (DBC ONLY)

P1094.35

FIG. 13 TRIAC/HEAT SINK

6.Apply heat sink compound and secure new triac assembly on rear of the heat sink with one #6-32 screw.

7.Route the triac wires through the tank support channel.

8.Secure triac/heat sink assembly to the lower rear of the brewer with two #6-32 screws.

9.Reconnect the wires of the new triac assembly. Refer to Fig. 14 when reconnecting wires.

WHI/VIO to Terminal Block (Red Insert)

BLU to Tank Heater

BLU to DBC Board J1-17

TAN to DBC Board J1-16

FIG. 14 TRIAC/HEAT SINK TERMINALS P1099

Location

The triac/heat sink is located on the lower rear of the brewer.

Removal and Replacement

NOTE - each triac installation requires the use of an approved silicone heat sink compound. Bunn-O- Matic recommends the use of Dow Corning 340 com- pound or equivalent. It can be purchased direct from Bunn-O-Matic (part number M2522.1000).

1.Place the tank heater switch on the DBC board assembly in the “OFF” position.

2.Disconnect triac wires, white/violet from terminal block, blue from tank heater, blue and tan from the DBC board assembly.

3.Remove the two #6-32 screws securing the triac/ heat sink assembly to the lower rear of the brewer.

4.Remove heat sink, triac and triac leads as an assembly.

5.Remove the one #6-32 screw securing triac to the heat sink and discard triac with leads.

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Bunn System III manual SERVICE cont TRIAC/HEAT SINK ASSEMBLY DBC ONLY

Contents

OPERATING & SERVICE MANUAL BUNNSYSTEM BUNN-O-MATICCORPORATIONWARRANTY USER NOTICES 12364.0000 10044.000020201.5600 00831.0000 00656.0000Models with digital brewer control assembly ELECTRICAL REQUIREMENTSElectrical Hook-Up Models with electro/mechanical thermostatsADJUSTING BREW VOLUMES INITIAL SET-UPelectro/mechanical brewers Models with digital brewer control assemblyADJUSTING BREW VOLUMES cont CLEANINGBREW SELECTOR SWITCH ON/0FF Warmer SWITCHTROUBLESHOOTING ProblemProbable Cause RemedyTROUBLESHOOTING cont Problem Probable CauseRemedy TROUBLESHOOTING cont ProblemProbable Cause RemedyWater from tank is not hot cont TROUBLESHOOTING contProblem Probable CauseTROUBLESHOOTING cont ProblemProbable Cause RemedyTROUBLESHOOTING cont Problem Weak beverage contProbable Cause RemedyTROUBLESHOOTING cont ProblemRefer to Service - Digital brewer con trol for testing procedures. See pageSERVICE COMPONENT ACCESSContents SERVICE cont BYPASS VALVE FIG. 2 BYPASS VALVESERVICE cont BREW SELECTOR SWITCHBREW SELECTOR SWITCH cont SERVICE contSERVICE cont CONTACTOR ASSEMBLY ELECTRO/MECHANICAL ONLYCONTACTOR ASSEMBLY ELECTRO/MECHANICAL ONLY cont SERVICE contONLY FIG. 8 CONTROL THERMOSTATSERVICE cont SERVICE cont DISPENSE VALVE DIGITAL BREWER CONTROL BOARD AND DISPLAY DBC TION, ENTRY AND DESCRIPTIONSERVICE cont DIGITAL BREWER CONTROL BOARD AND DISPLAY DBC cont SERVICE contSERVICE cont TRIAC/HEAT SINK ASSEMBLY DBC ONLY SERVICE cont SERVICE cont SERVICE cont LIMIT THERMOSTAT SERVICE cont ON/OFF Warmer SWITCH SERVICE cont OVERFLOW PROTECTION SWITCH SERVICE cont SOLENOID VALVE Refill FIG. 23 REFILL SOLENOID VALVESERVICE cont SOLENOID VALVE Refill cont SERVICE cont START SWITCH SERVICE cont TANK HEATER FIG. 27 TANK HEATERLocation TIMER ELECTRO/MECHANICAL ONLYEARLY MODELS SERVICE contDIGITAL TIMER ELECTRO/MECHANICAL ONLY LATE MODELS FIG. 31 DIGITAL TIMERSERVICE cont SERVICE cont Timer SettingFIG. 32 DIGITAL TIMER WIRING PageWARMER ELEMENT SERVICE contPage LOWER27362 092900Page 27362092900 Page LOWER27362 092900