AUTO-SERIES BREWERS
Contents
1. 0 S01 8L LHM O 226 BLK 14 150 C n i BLK 14 150 C WHT 18 105 C INLET VALE BLK 14 150 C BLK 14 150 C CONNECTOR CHASSIS GROUND GREEN Page 16 Auto Series Brewer Manual SCHEMATIC WIRING DIAGRAM AT 3WR AT 3WRE OPTIONAL READY LIGHT RIGHT WARMER os BREW REAR RIGHT LEFT SWITCH SWITCH SWITCH SWITCH POWER LE i SWITCH LEFT 11 WARMER o lo m p RED WHT WHT YEL AK min 18 200 C 18 200 C g ED 3 5 WHT YEL RED WHT 7 3 18 200 C 18 200 C Gol YELL 14 150 C ORG 18 150 C GRY 18 1050 W R 14 150C WHT RED 14 150 C WHT RED 14 150 C CUBE RELAY TIMER 0 091 1 18 c01 81 1310 0 051 1 REAR WARMER THERMOSTAT BLK 14 150 C 19 BLK 14 150 C PUT DUMMY RED WHT WHT YEL CONNECTOR 14 18 200 C 18 200 C Bo BLK 14 150 C W R 14 150 C CHASSIS GROUND GREEN Auto Series Brewer Manual 17 SCHEMATIC WIRING DIAGRAM AT 3W AT 3WE OPTIONAL FRONT REAR pe WARMER WARMER READY LIGHT BREW REAR FRONT LOWER POWER SWITCH SWITCH SWITCH SWITCH i SWITCH A E 213 32 1 32 1 32 1 i le TTT TTT TIT 111 DO DO 000 000 000 old Coo a 9 8 x 5 A 5 e a 8 8 5 5 sj GRY 18 105 C 5 E z gt C BLK 14 150 C WHT RED 14 150 C W RED2. 10 AT TC AT TCE PART LIST 11 Auto Series Brewer Manual AT 3W AT 3WE PART LIST Auto Series Brewer Manual Page 12 TROUBLESHOOTING GUIDE Problem Possible Source Check Solution No Hot Water 1 2 Tank heater Hi limit thermostat or main thermostat 1 Check the voltage at the tank heater terminals Voltage should be 120V 230V for E models Check serial tag for proper voltage 2 Check the voltage between the white wire on the tank heater terminal and the incoming terminal black wire on the hi limit thermostat then the outgoing black wire terminal on the hi limit thermostat 1 A If correct voltage is present at the tank heater terminals and water is not being heated replace tank heater B If voltage is not present at tank heater terminals refer to step 2 C If incorrect voltage is present at tank heater terminals check voltage at outlet A If voltage is present on incoming terminal on the hi limit thermostat but not on the outgoing terminal replace hi limit thermostat B Check voltage between black and white wire on receptacle If voltage is not present check outlet or circuit breaker C If voltage is not present on incoming terminal of hi limit thermostat replace main thermostat Steaming or Spitting Around Main thermostat 1 Thermostat contact stuck or out of calibration A Adjust thermostat to lower tempe
3. Place empty decanter on warmer located directly under the brew basket and turn corresponding warmer switch ON NOTE For airpots open airpot lid remove pump stem from airpot and place airpot opening directly under center hole in brew basket 5 Press Brew switch once then release 6 Valve will turn on approximately 1 minute and fill pour in basin 7 Hot water will be delivered through the sprayhead This distributes the hot water evenly over the coffee bed within the brew basket The coffee will drain from brew basket into the container below 8 TURN OFF WARMER WHEN NOT IN USE Red light indicates warmer is ON Not for airpot brewers 9 Before brewing next pot remove brew basket from brew rails and dump filter into waste basket 10 Do not press Brew switch more than once during brew cycle N BREW VOLUME ADJUSTMENT 1 Disconnect power to brewer 2 Remove plug on upper left side of chassis 3 With a flat head screwdriver turn dial clockwise slightly to increase volume and counter clockwise to decrease volume Reference timer setting Water Pressure psi Timer setting sec Volume oz 35 64 64 40 63 64 50 62 64 4 Reconnect power and run a brew cycle to check volume 5 Repeat steps 1 3 if necessary BREW BASKET RAIL ADJUSTMENT al Disconnect power to brewer 2 Remove lid and pour in basin 3 Loosen nuts for brew rails 4 Fit basket in place 5 Tighten nuts and check basket fit Auto Series Br
4. 1 Remove retaining screws from warmer plate 2 Lift plate and disconnect leads 3 Remove nuts and washers holding retaining plate and warmer element to plate 4 Reverse steps 1 3 to reassemble 14 Auto Series Brewer Manual SCHEMATIC WIRING DIAGRAM AT 2W AT 2WE OPTIONAL UPPER WARMER READY LIGHT BREW UPPER LOWER i POWER SWITCH SWITCH SWITCH SWITCH 1 2153 2 1 2 1 5 IIT PIT 9 9 gum RED WHT WHT YEL wl lo me RENO 18 200 C 18 200 C Sl 2 8 A o 8 g E GRY 18 1050 9 ORG 18 150 C 5 WHT RED 14 150 C W RED 14 150 C CUBE RELAY TIMER ORG 18 1500 BLK 18 108c BK 14 150 C I LOWER WHT 18 105 C ORG 18 105 C INLET VALE r 1 18 105 C THERMOSTAT BLK 14 150 C BK 14 150 C RED WHT WHT YEL 18 200 C 18 200 C VIOLET 18 105 C PUT DUMMY CONNECTOR BLK 18 105 C pe YELL 14 150 C WHT RED 14 150 C WHT CORD CHASSIS GROUND GREEN Auto Series Brewer Manual Page 15 SCHEMATIC WIRING DIAGRAM AT AP AT AP AT TC AT TCE rp qum 05 BLK 18 105 C READY LIGHT W RED 14 150 C AU 9 a pyss o f 7 CUBE RELAY TIME BLKC18 105 C gt V 7 CA x A HUY ly poco Ds BREW SWITCH OPTIONAL
5. 14 150 C CUBE RELAY TIMER ORG 18 1500 4 2 ORG 18 1500 Y WHT 18 105 C lls s Vn ORG 18 105 C INLET VALE LOWER WARMER UG 18 105 C RED WHT WHT YEL a 18 200 C 18 200 C BLK 14 150 C MOLET 18 105 C CONNECTOR BLK 18 105 C o YELL 14 150 C WHT RED 14 150 C 18 Auto Series Brewer Manual GRINDMASTER CORPORATION Grindmaster Coffee Grinders and Brewers PrecisionBrew Brewing Systems Espressimo Espresso Machines Crathco Hot Beverage Dispensers Crathco Cold and Frozen Beverage Dispensers AMW Coffee and Tea Systems Tel 502 425 4776 Fax 502 425 4664 1 800 695 4500 USA amp Canada only P O Box 35020 Louisville KY 40232 USA O Grindmaster Corporation 2007 www grindmaster com email info grindmaster com 0307 Form BW 340 02 PRINTED IN USA Part 73254
6. 7 GRINDMASTER CORPORATION AUTO SERIES BREWERS Installation Operation and Service Manual Coffee Preparation Procedures Brew Volume Adjustment Brew Basket Rail Adjustment Spare Parts List Water Tank Assembly Drawing AT 2W AT 2WE Drawing AT AP AT APE Drawing AT3WR AT3WRE Drawing AT TC AT TCE Drawing AT 3W AF3WE Drawing Troubleshooting Guide Component Replacement Instructions Prior authorization must be obtained from Grindmaster Corporation for all warranty claims Model AT 3WR AT 3WRE Model AT TC AT TCE Grindmaster Corporation M 4003 Collins Lane GRINDMASTER Louisville Kentucky 40245 USA 502 425 4776 CORPORATION 800 695 4500 USA and Canada only 800 568 5715 Technical Service only FAX 502 425 4664 Grindmaster Corporation 2007 WWW grindmaster com PRINTED IN THAILAND 0307 Form BW 340 02 Part 73254 WARNING LABELS The following warning labels were on your dispenser when it was shipped from the factory They should remain on your dispenser in good readable condition at all times If one of your labels is missing or damaged order a replacement label immediately Part 71509 for warmer models only Located near warmer plates Warmers and surfaces are hot Part 71582 Located on rear and top access panels x Disconnect power before servicing Part 70248 Located on front behind server A CAUTION ATTENTION AVISO DE PRECAUCION BASKET CONTENT
7. S LE CONTENU DU PORTE FILTRE EL CONTENIDO DE LA VASIJA ARE Hi EST CHAUI CALIENTE ESTA REMOVE WITH CARE LE RETIRER AVEC SOIN REMUEVA CON CUIDADO LE NON RESPECT DE CES EL NO SEGUIR ESTAS CONSIGNES RISQUE INSTRUCCIONES PUEDE CAUBAR D ENTRAINER DES BLESSURES SERIOS ACCIDENTES FAILURE TO COMPLY RISKS INJURY CAUTION WARMERS AND SURFACES ARE HOT ATTENTION LES SURFACES EXT RIEURES ET LES ELEMENTS CHAUFFANTS SONT CHAUDS ADVERTENCIA PARRILLAS Y OTRAS SUPERFICIES 70248 ESTAN CALIENTES GRINDMASTER CORP Part 71949 or 71149 Located on brew basket CAUTION Hot liquid in brew CAUTION HOT LIQUID basket could cause burns Remove with care Part 71949 Part 71149 Auto Series Brewer Manual Page 3 A WARNING Read and follow installation instructions before plugging or wiring in machine to electrical circuit Warranty will be void if unit is connected to any voltage other than that listed on the name plate FILL BREWER TANK WITH WATER BEFORE CONNECTION TO POWER SUPPLY WATER CONNECTION The following is required for water hook up 1 A quick disconnect water connection or enough coiled tubing so the machine can be moved for cleaning underneath required for NSF approved water hook up 2 A 1 4 male flare adapter is provided to be attached by the installer to the back of the machine for hook up to water supply 3 Installation to a water filter system is required to prevent lime and scale build up in th
8. e machine 4 Water pipe connections and fixtures directly connected to potable water supply shall be sized installed and maintained in accordance with Federal State and Local codes required for NSF approved water hook up 5 Equipment is to be installed with adequate backflow protection to comply with applicable Federal State and local codes required for NSF approved water hook up Minimum water pressure to the machine 30 psi 2 0 bar Maximum water pressure to the machine 80 psi 5 6 bar INSTALLATION INSTRUCTIONS 1 Place the decanter under brew basket raise top evaporation cover and pour three decanters of water through the top pour in opening Water should come through the brew basket as the third decanter of water drains out of the pour in basin 2 Brewer is shipped with thermostat turned on full clockwise position Plug brewer into a dedicated grounded 120V 15A circuit 230V 15A circuit for E models 3 Allow 10 15 minutes for water in tank to heat to brewing temperature Hot water may drip from brew basket on initial thermal expansion of water in the tank This will not occur thereafter 4 After water has reached brewing temperature thermostat will click off heating noise will stop and green ready light will be on pour 1 decanter 60 0z 1 8L of water through pour in opening Machine is now ready to use 5 Pour 1 decanter of water through pour in opening to check for proper temperature setting with an accu
9. ewer Manual Page 5 SPARE PARTS LIST mesas Tubing 5 16 ID x 1 2 OD Silicone Heat Exchanger Inside Tank 3 8 ID omo emen Heating 00w rums Heating 5 sri 61143 Nut Pipe Jam 1 8 NPT Fitting Brass 1 4 MFL x 3 8 NPT 73177 Fitting Brass 1 4 MFL x 1 4 NPT Elbow Brass 1 8 NPT 3 8 Barb Fitting 1 4 MFL x 3 8 Barb 100523 T Stat 1 2 Manual Reset 230V Models 100524 Bracket Manual Reset 230V Models us ready Light Green 240V ue pwwnwamerugedtmv panno Desin 091 eer pows Valve niet sy o eeWamr esozs Heater Warmer220v iow es sors Panel WamersRD ATSWR et TopBosyAssempyATSWR Jeizsz Fiting Assembly 14MFL Brass Elbow Barbed 3 8 Hose ID x 3 8 NPT Orifice Flow Control 0 5 GPM Barb 3 8 Hose ID x 3 8 NPT Bracket Pipe Connect Pipe connect 1 4 OD Decal Main Front AT 3W Not shown 61530 Power Cord 120V 61453 Power Cord 230V 6 Auto Series Brewer Manual WATER TANK ASSEMBLY 7 Auto Series Brewer Manual AT 2W AT 2WE PART LIST Auto Series Brewer Manual Page 8 AT AP AT APE PART LIST Page 9 Auto Series Brewer Manual AT 3WR AT 3WRE PART LIST Auto Series Brewer Manual
10. r in basin assembly receiving pan Disconnect electrical terminals and hoses as needed Remove front two screws mounting the tank Lift tank and lid completely out of tank Remove two rear screws mounting tank to tank lid Reverse steps 1 6 to reassemble new tank assembly THERMOSTAT HI LIMIT Disconnect wires to hi limit thermostat Remove two screws and remove thermostat Check continuity of the new hi limit thermostat before installing Screw down new t stat and reconnect wires Make sure the hi limit thermostat is securely mounted and that all electrical connections are tight and isolated Vtde e NE MAIN THERMOSTAT Disconnect wires and remove tank and tank lid assembly Remove two rear screws mounting tank to tank lid Remove screws which secure thermostat to tank lid Loosen thumb nut securing capillary bulb Remove grommet from top of tank lid by pressing up with thumb and pulling capillary bulb out through hole Reverse steps 1 5 to reassemble new tank assembly Ov PL uw TANK HEATING ELEMENT Disconnect wires and remove tank and tank lid assembly Remove two rear screws mounting tank to tank lid Loosen thumb nut securing capillary bulb and remove bracket Remove two brass nuts and remove element Install new element and washers with nuts secured tightly Inspect tank lid gasket and replace if necessary Reverse steps 1 3 to reassemble B COOL Re WARMER ELEMENT
11. rate thermometer Take the temperature of this water at a point below the brew basket opening at the start of the brew cycle and when the decanter is half full Recommended temperature of the water is approximately 195 F 91 6 In higher altitude locations 5 000 feet 1 500m above sea level the thermostat may have to be adjusted lower to prevent boiling Page 4 Auto Series Brewer Manual COFFEE PREPARATION PROCEDURES Pour Over Mode Place filter into brew basket Putthe proper amount of coffee into the filter 3 Slide the brew basket into holder 4 Place empty decanter on warmer located directly under the brew basket and turn corresponding warmer switch ON NOTE For airpots open airpot lid remove pump stem from airpot and place airpot opening directly under center hole in brew basket 5 Pour decanter of fresh water through pour in opening at top of brewer 6 Hot water will be delivered through the sprayhead This distributes the hot water evenly over the coffee bed within the brew basket The coffee will drain from brew basket into the container below 7 TURN OFF WARMER WHEN NOT IN USE Red light indicates warmer is ON Not for airpot brewers 8 Before brewing next pot remove brew basket from brew rails and dump filter into waste basket N COFFEE PREPARATION PROCEDURES Auto Mode Place filter into brew basket Putthe proper amount of coffee into the filter 3 Slide the brew basket into holder 4
12. rature setting B Thermostat should be calibrated or replaced Funnel 2 High altitude 2 For altitude above 5 000 feet 1 500m Dripping 1 Not siphoning properly 1 Water should flow from sprayhead freely 1 A Clean sprayhead holes B Check tightness of sprayhead tube C Check brass elbow in tank for debris 2 Leaky fill valve 2 Turn off water supply to see if 2 Replace or repair inlet valve as needed dripping stops Dry Coffee 1 Filters 1 Are correct filters being used 1 Use correct filter Remaining on 2 Not siphoning properly 2 Refer to dripping step 1 2 Refer to dripping step 1 Brew Basket 3 Improper loading of 3 Filter and coffee in brew basket 3 Filter should be centered in brew basket and brew basket coffee bed should be level Warmer Station 1 Warmer defective 1 Voltage at warmer terminals should 1 If voltage is present on terminals but warmer is be 120V 230V for E models not heating replace warmer 2 Warmer On Off switch 2 If voltage is not present on warmer 2 If switch does not make and break continuity terminals check continuity of switch when turned on and off replace switch 3 Bad harness 3 Check connections between harness 3 All connections should be tight and switch and between switch and warmer Overflowing 1 Receiving container 1 Operating instructions 1 Always start brew cycle with empty container not completely empty at start of brew cycle 2 Not siphoning p
13. roperly 2 Refer to dripping step 1 2 Refer to dripping step 1 3 Adjust timer 3 Check valve on time with watch 3 Refer to Brew Volume Adjustment section Low Pot Level Adjust timer Check valve on time with watch Refer to Brew Volume Adjustment section Excessively Long Brew Times 1 Lime scale build up 1 Remove spray head deflector and check nozzle Delime machine Little or No Water From Faucet 1 Lime scale build up 2 Clogged inlet valve Be sure water is turned on Delime heat exchanger Replace or repair inlet valve If you still need help call an authorized dealer in your area or Grindmaster Corporation s Technical Service Department You c an reach Technical Service at 502 425 4776 or 800 695 4500 USA and Canada only Monday Friday 8 00 AM 8 00 PM EST Please have the model and serial number ready so that accurate information can be given Prior authorization must be obtained from Grindmaster Corporation s Technical Service Department for all warranty claims Auto Series Brewer Manual Page 13 COMPONENT REPLACEMENT INSTRUCTIONS A WARNING Disconnect power before servicing Risk of electric shock These steps apply to replacement of TANK TANK HEATER and HI LIMIT or MAIN THERMOSTAT Remove brewer lid Disconnect electrical connectors from upper warmer plate if applicable Remove pou
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