
Thermostat Instructions
FOR AUTHORIZED SERVICE PERSONNEL ONLY
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**SERVICE INSTRUCTIONS** and **TROUBLE SHOOTING GUIDE**
CAUTION: DISCONNECT POWER BEFORE ATTEMPTING ANY ELECTRICAL REPAIRS
Note: The thermostat adjustment knob (Item15) is located in back of top box. If water temperature is less than 197°F (92°C) slowly tumthermostat knob clockwise
until ready light goes out. When temperature of water approaches 197°to 203°F (92°to 95°C) slowly turn thermostat knob counter-clockwise until the green ready
light comeson. If watertemperaturecannot beincreasedwhenthermostat knobisturnedfully clockwise, thenproceed as follows:
RemoveBracket and pull off knob. Placeasmall screwdriver intothecenter of thermostat shaft. Whileobservinggreen ready light andtemperature on thermometer,
hold shaft and turn small adjustment screw in center counter-clockwise until green ready light goes out. When temperature of water approaches 197°-203°F (92°-
95°C), slowly turnscrewclockwiseuntil ready light comeson. Turning screwclockwiselowers temperature; counter-clockwiseraises ~. After adjusting center screw,
placenail polishorglyptol onscrewtoset inpos~ion.
Note: As afinal check, measurewater temperatureat SprayHead(25, Fig3). Temperatureshouldbe197°to203°F(92°to95°C).
TIMER~DJUSTMENTS(AutomaticModelsBT2A, BT3A)
Note: Timer adjustment knobislocatedinback of topbox. Toincreasevolume of water, turnknobof timer clockwise. Todecrease, turnknobcounter-
clockwise. Turnknobby small increments.
Note: Timer must gothroughacompletecyclebeforeanotheradjustment canbemade. Timer cannot beadjustedonceit has beeninitiated.
PROBLEMS WITHWARMERELEMENTS
If warmer plate fails to heat, first check power source and then check ~ light on warmer switch (21 Fig 3) is lit when in the "1" position. If warmer
switch is lit, replace warmer plate by unplugging brewer, removing the two hold down ~rews on plate and withdrawing warmer plate from brewer.
Replace the newwarmer plate. If warmer switchdoes not light, replace it. To remove sw~ch press each tab behind front plate of brewer down with
screwdriver inturn. Aseachtabis pressed, popthat corner of warmer switchout of thefront of brewer. Newsw~chsnapsinfromthe front.
1. If Redpower light (20Fig3) and warmerswitchesdonot comeon, checkpowersource. Replacefuseor reset circuit breaker if necessary. If power
is good, check rear power switch for continuityandreplace " switch stays open.
2. If water still fails toheat, disconnect linecordandcheckout tankheater (31Fig3), thermostat (14Fig3) and hightemperaturesafetyshutoff (54
Fig3). Replaceneededparts.
MAINTENANCE ON AUTOMATIC MODELS BT2A. BT3A
IF NO WATER COMES FROM SPRAY HEAD AND POWER TO BREWER IS
PRESENT CH~~
TESTING SOLENOID AND TIMER
Makesurebrewer isproper1y primed . Tumonpower switchand thenwarmer switchabovefunnel Pressbrewswitchand holdfor one minute. "
solenoidbuzzesand wateflows throughsprayheadwhenbrewnecessary. " brewswitchandwiringareokay, solenoidisat fault.
REPLACING SOLENOID, TIMER, HI-UMIT, THERMOSTAT AND TANK HEATER (See 111.3)
Unplug Power Cord, shut off water supply(for automaticbrewers) and removetopcover
Solenoid (Item1)- Removeelectrical connections, (2) screws, water inlet fittingandsiliconetubing. Replacewithnewsolenoid.
TImer (Item13)-Loosenandremove(2) screwsinbackof top box. Lift out timer anddisconnect thecolor codedwiresonebyoneandconnect same
toreplacement timer. Placepointerof knobtocenter anddial range
HI.Limit Switch (Item54)- Disconnect the(2) push-onleads, loosenlargenut on heating element terminal andpull out hi-Iimit bracket (Item53).
Replaceswitch(Item54).
Thermostat (Item16)- Removewater tankinsert (Item40), thermostat bulbclip (Item48), hexnut (Item42) fromcapillarytank fitting, thermostat knob
guard(Item14), and(2) screwssecuringthermostat tohousing. Disconnect thepush-onleadsandremovethermostat. Replacewithnewonein
reverseorder. Wheninstallingnewcontrol, donot overtightensmall packingnut oncompressiofitting.
Tank Heater (Item32)- Removetank insert (Item40), bulbclip(Item48), (2) l-exnutsandwashers. Disconnect push-onleadsReplaceinreverse
order
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