Grindmaster AMERICAN METAL WARE 87710 User's Manual
Contents
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3. or take apart faucets which have no caps and scrub pipe leading to center of urn Clean urn gauge glass with brush and urn cleaner Rinse Scrub the faucet then rinse it thoroughly with hot water Place a gallon or more of fresh water in the urn until next use Remove cover and clean Replace cover and leave partly open ALWAYS REMEMBER TO EMPTY AND RINSE THE URN WITH HOT WATER BEFORE USING AGAIN CONDO NOTE On automatic urns use brew start and stop switches or the rinse switch to spray scalding hot water into liner for cleaning and rinsing On pourover urns draw hot water directly from urn Make sure urn water tank is kept near full and heat is on Semi Weekly Cleaning Procedure 1 Be sure that the outer jacket is full of water 2 Turn on the heat and fill the urn liner 3 4 full of water use only urn cleaning compounds following manufacturer s directions mix thoroughly and let stand about 30 minutes 3 Clean the gauge glass faucet pipe plugs etc using long thin brush Use urn cleaning solution for scrubbing Take faucet valve apart and clean thoroughly Clean all tubes well 4 Scrub inside of urn and inside of cover with long handled brush Be sure to clean the lug nut in the base of urn liner 5 Rinse the inside of the urn three or four times with hot water scrubbing each time Also rinse parts well Repeat until all traces of foreign odor and cleaning solution are removed 6 Leave a gallon o
4. a deed deste e Orikut T aver tre fe gE QF pn SS maq Se oes rey abs g ri wa HO SEE rcge c Tasers LSA pedum qure AND roy Ss FESTI de Sie fo kes SE SAP American Metal Ware 87710E Coffee Urn Page 4 Installation 1 IMPORTANT TO ALLOW 6 CLEAR SPACE FOR ACCESS TO CONTROL BOX Urn should be level both front to back and left to right 2 CONNECT WATER LINE 3 8 NPT water inlet located at left end and provide shutoff valve and union in supply line near urn 140 F hot water must be used 30PSI mini mum 70PSI maximum We strongly recommend the use of copper or aluminum tub ing to provide flexibility and avoid strain on the urn 3 8 O D minimum tubing is rec ommended Model No 87710 Actual Coffee Capacity Each Liner 10 Gal Water Compartment Capacity 24 Gal Brew Capacity Gals per Hour 80 Electric Supply Voltage 240V 208V 1 Phase Heater Size 15KW 15KW 1 Phase Amperes 63 72 3 Phase Heater Size 15KW 15KW 3 Phase Amperes 36 42 3 CONNECT URN TO ELECTRIC POWER Check to be sure that the nameplate mark ing of voltage phase and the number of wires matches supply lines Remove cover on control housing The terminal block for the line connections is located in the
5. arrow on valve the same as system flow direction oo uE PLATE SERVICE TOOL IK m E 2 RENG KD E ENCLOSING TUNE BL LIFE AnD SP FIG ASE rh i GASEET ims IEA T ITEMS INCLUDED KIT Cleaning As with all valves it may become necessary to clean them periodically to keep them in peak operating condition Any cleaning methods or fluids used should be compatible with valve materials Inspection 1 All moving parts and elastomers should be clean in appearance without permanent set springs should be free of corrosion If any appear damaged replace them with a parts kit which contains all moving parts necessary to rebuild valve to an as new condition 2 Inspect enclosing tube assembly for wear exterior dents or other conditions which would impair free movement of the poppet and or plunger assembly Its interior should be clean and free from any obstructions Be especially critical of its valve seat Testing 1 Apply correct voltage to valve solenoid and cycle solenoid several times A distinct click should be heard each time the solenoid is energized 2 Pressurize valve and check for leaks Note Alco solenoid valves are equipped with a continuous duty solenoid coil which when energized for an extended period of time becomes hot to the touch This is a safe operating temperature Any excessive heating will be indicated by smoke and odor of burni
6. compartment are electric immersion heaters thermostatically controlled through a contactor relay to keep the water always at the desired temperature Measurement of water quantity sprayed over coffee is by push button start electric reset timer timing a constant water flow rate to the spray nozzle Hot water from the water compartment is pumped to the spray nozzle controlled by the reset timer Automatic refill maintains water level in water compartment Control system components are enclosed in stainless steel housings on both ends of the urn for the 87710 urn Air agitation of coffee mixes the brew with compressed air automatically at the end of the brew cycle or if desired manually at any time with a push button American Metal Ware 87710E Coffee Urn Page 3 060 SMALE A AS NEP MASRH OH DHL i Dre Mou sTS9 ORF cosy ET ee TSS eee Sree Sao jr Use TADH EHE Ie ELENI ie ACHSE Cp Fay wa diri ahs Cee bee D bts CV Cn Spa m Fr ay aula W Fy E AL E War Aba Seva po Mol font MOE ag crm ae de wae gor faze Sears a hO F FFT Ber for bay Cahier aoe GES Fo xy C mapas Op au TF ef dee ero aep ED oo E
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8. housing on the left end See drawing as required It is recommended that a fused disconnect switch be installed near urn The urn body must be grounded either through metallic conduit or else by means of ground wire An experienced electrician should be respon sible for the installation of the urn and its associated supply line NOTE Neutral wire required on all single phase and on 208 volt 3 phase power supplies to operate 120 volt AC control circuit On single phase 2 wire service no neutral or 3 phase 3 wire service no neutral 120 volt AC power to operate control circuit must be supplied as circuit Do not replace cover until completing installation start up 4 FILL WATER COMPARTMENT Turn on water supply and electric service to urn Water compartment should fill to stop full level in approximately 10 minutes Turn thermostat knob to BREW position Pilot light over knob should light showing heater power on Water compartment should reach operating temperature approxi mately 45 minutes later When the pointer on thermometer approaches the W in the blue BREW zone urn is ready for automatic operation American Metal Ware 87710E Coffee Urn Page 5 Spray Over Time Volume Rate Timer and spray over rate are factory set as per information below If other volumes of water or a faster or slower spray over rate is desired see following instructions Timer Adjustment Turn adjustment knob clockwise to decrease time counterclockwi
9. of flow must correspond to Flow Direction Schematics 8 Before energizing valve be sure source voltage and frequency matches that on coil Do not energize coil unless coil is securely attached to valve See Coil Installation Instructions 9 Prolonged use in excessive ambient temperature or humidity may damage coils 10 Do not dent or bend or use enclosing tube as lever A damaged enclosing tube may result in coil burnout or inoperative valve 11 Foreign matter in the valve may result in seal leakage sticking open or closed or coil burnout To prolong valve life and ensure system cleanliness use a strainer Coil Installation Instructions 1 Before removing coil from valve disconnect electrical power source Failure to do so will cause coil to burn out 2 Verify coil type voltage and frequency This information appears on the coil nameplate 3 Place coil over the enclosing tube Coil may be rotated 360 for easy wiring It is recommended that coil lead connections be soldered on D C and 24V 50 60 Hz applications 4 Install valve nameplate Pull tab on valve nameplate and peel off paper backing to expose adhesive Stick nameplate on top of coil housing and press nameplate down firmly If installing replacement coil use valve nameplate supplied with valve Press nameplate down firmly 5 Install voltage nameplate and coil retainer Press coil retainer down firmly to secure coil Wiring 1 Be sure your wiring confo
10. American Metal Ware Installation Operation amp Service Manual For High Speed Brewing Urn Top Line TABLE OF CONTENTS Model 87710 General Description Dual Wall Insulated Roughing In Drawing Installation Spray Over Time Volume Rate X Electric Steam How To Brew Thermostat Adjustments Timer Care and Cleaning Explanation of Agitation System Special Features Operation Malfunction and Service Dual Lever Control Troubleshooting Level Control Service Troubleshooting Agitation Installation Service for Solenoid Valve 18 Sprayover Pump Breakdown Illustrated Parts Breakdown List of Illustrated Parts Parts List Wiring Diagram Controls Heater Wiring Diagram 208V 240V 25 Heater Wiring Diagram 480 26 After completing installation and set up the equipment owner should keep this manual for future reference Grindmaster Corporation 4003 Collins Lane Louisville Kentucky 40245 USA 502 425 4776 800 695 4500 USA and Canada only 800 568 5715 technical service only FAX 502 425 4664 www grindmaster com Grindmaster Corporation 1995 1104 Form AM 307 02 PRINTED IN USA General Description This urn is an automatic push button operated volume brewing unit It consists of a non pressure vented water compartment of large capacity into which two stainless steel coffee liners are inserted Also installed within this water
11. I 4181s seop 19 71114 Woy ejquiessesiq 19 pue 550106 OV 10 YOSYD Joye jou pue 5 910J8q inss id 19jeAA 03002 I A81 Jena uonoeuuoo 95001 2 Aguepniuuejut Jo o Bunious L Aney 033002 19497 Jena 8 punojJB Buoys 4 109 pIOUSJOS 1 9 pasojo uezoJj Jo e5s plou os 6 A91 uo ON p Jo3eM opena SI penunuoo Xue 1164 O Page 15 American Metal Ware 87710E Coffee Urn IV Trouble Shooting Auto Refill Low Water Cutoff and Dual Level Control System continued E Tank fills with water but heat does not come on F No water in tank but heat comes on heater damage likely 1 Thermostat off 2 Thermostat inopera tive or out of calibration 3 Power relay or con tactor inoperative 4 Low electrode faulty or covered with lime scale 5 Dual Level Control faulty 1 Thermostat and fill valve connected to wrong terminals on Dual Level Control 2 Electrode s shorting to ground 3 Dual Level Control faulty Visual Jumper across thermo stat terminals causes he
12. NOT WORK replace manual agitation switch 7 IE MANUAL AGITATION WORKS BUT AUTOMATIC DOES NOT replace the solid state brew timer or separate solid state agitation relay American Metal Ware 87710 Coffee Urn Page 17 Installation and Service Instructions 53 20 10 For 202CB and 204CD Series May 1983 General Purpose Solenoid Valve Supd s 3 80 Safety Instructions Attention Read carefully before attempting to install operate or service your Alco solenoid valve Retain for future reference 1 Read installation instructions thoroughly Failure to comply can result in valve failure or system damage or personal injury 2 Do not use solenoid valves on applications or fluid media not specifically cataloged without prior approval of Alco Engineering Department WARNING DO NOT USE WITH FLAMMABLE OR EXPLOSIVE FLUIDS OR GASES DO NOT USE IN EXPLOSIVE ATMOSPHERES Use on these elements can result in product damage or personal injury 3 Use of solenoid valves on applications not specifically cataloged can result in valve failure and or system damage or personal injury Do not utilize a solenoid valve on any system where the system pressure can exceed the safe working pressure of the valve 4 CAUTION Do not utilize a solenoid valve as a safety shut off Installation Valve and Solenoid Position 1 For ease of installation an Alco solenoid valve can be installed in any position Gravity does not affect its opera
13. Valve 0 50 PSI Repair Kit for Steam Solenoid Valve 506009 Replacement Coil for Steam Solenoid Valve 506009 Steam Strainer 1 2 FPT American Metal Ware 87710E Coffee Urn Page 23 pem LVISONMTHI Hd3Lv 3H AMERICAM METAL WARE a2 ELECTRODES HN 1 LIER IV3H ONY THY Won AES HOw3 HOS 1 SLIM 199 P JE lo uu n Page 24 American Metal Ware 87710E Coffee Urn Jno TEL AGEL LIE Ei CATO Ew lon 20 HHH SNA SMITH Z TOR N HH l4 E d 1 Juv i ofe DNILY3H RANS SEH qu 23079 Timi DRM 10H im 1234500 THOS S naa Dd A DHL 01 Tn Od ee i TENS Ki DEM OHS 5 229 GL 71 nous CH 3g9 Syn Z THOS eur WARGI OL 4 d OHO 101402 01 GEL Eio ta nou O 27 AE UT TF 31HHL 04 LAHO OL S HOHE EINE Jeter DAC XN EAA Wl TU ik 43wWDd 153 09 Page 25 American Metal Ware 87710E Coffee Urn char p CLORE HINA PESSE a emas 12 TEXTUNV FB LTSNOHONHJ OLITEN SEV TXNK EFS eH z S v OIC aud ag M23 IWLAW NVOIH3WV
14. al i e pointing towards sprayarm for maximum sprayover The purpose of the internal bypass valve is to direct excess discharge from the sprayover pump back into the urn water compartment Factory setting is 10 gallons sprayover water in 10 minutes 1 gallon 60 seconds and sprayover bypass valve wide open Bypass volume is about 30 of the total sprayover or 3 gallons Before actual use of urn it should be thoroughly cleaned and washed t is also recommended that a batch of coffee be brewed in each liner based on a final brewing cycle timer setting and actual muslin bag or filter be used We recommend that these first batches be thrown out and not used Strength of brew may be checked by hydrometer or evaporation tests but flavor test might be poor on the first batch Page 6 American Metal Ware 87710E Coffee Urn How To Brew In An Automatic Urn 1 Place filter in brew basket with designated amount of ground coffee automatic urns are designed to use 1 2 3 or 4 lbs of coffee Make certain you have a level bed of coffee Consult your coffee supplier for exact brewing specifications C B C recommendation is 1 Ib of coffee to each 2 1 2 gallons water 2 Replace cover and move spray head over center of coffee grounds 3 Check thermometer to make certain urn is at brewing temperature Press timer button 4 When brew cycle is completed brew light shuts off remove brew basket and dispose of spent grounds 5 Mixing of finished b
15. at to come on Check for voltage 120V AC across coil terminals Jumper from XL termi nal to metal enclosure allows unit to heat Jumper from XL termi nal to C does not cause unit to heat Disconnecting wire white from C probe terminal provides low water heat cutoff and tank fill Heat comes on with no probe wires HI XL C connected Make sure knob is turned fully clockwise Recalibrate thermostat If no reme dy or thermostat does not cycle replace If correct voltage replace coil or entire device If not correct voltage check for loose wires improper wiring or other cause Clean electrodes Check wiring If still no remedy replace electrode assembly Replace Dual Level Control Thermostat brown wire must be connected to HEAT and fill valve black wire to FILL Replace electrode assembly If no remedy check for improper wiring cut insulation for instance or elec trode tips touching metal inside tank Replace Dual Level Control NOTE The level control board works on the principle that water is conductive and with some pure water installations an increased sensitivity may be required in the level control system Consult factory if this be the case If you still need help call our service department at 800 568 5715 Ext 3 or 502 425 4776 Monday through Friday 8 am 6 pm EST or an authorized service center in your area Please have the mod
16. ct 2 IF AGITATION DOES NOT STOP check for sticking manual agitation switch Where automatic agitation is built into timer and manual switch checks okay timer is defective and should be replaced Where automatic agitation is a separate solid state agitation relay and manual switch checks okay the relay is defective and should be replaced If there is a constant low air pump output the solid state timer or relay is defective and should be replaced 3 IF NO AIR ENTERS LINER check output of pump through outlet fittings on urn front If okay then make sure all connections are tight Check for leaks at gauge glass at top bottom and at cleanout cap May require new o ring or silicone grease on top cap upper or lower gauge glass washer or if chipped or cracked new gauge glass Also make sure passageways through top cap and gauge base are clear 4 LITTLE OR NO AIR COMES THROUGH FITTINGS ON URN FRONT open control box and check pump operation If pump operates but has weak output replace it If air pump is okay air lines between control box and front fittings are blocked or leak Blockage usually is caused by overfilling liners Use stiff thin wire to clear If air lines leak coffee liners are removed first then tighten compression fittings at each end of lines 5 IF NEITHER AUTOMATIC NOR MANUAL AGITATION OPERATES PUMP pump is most likely defective and should be replaced 6 IF AUTOMATIC AGITATION IS OKAY BUT MANUAL DOES
17. el and serial number ready so that accurate information may be given Prior authorization must be obtained from Grindmaster Corporation s Technical Service Department for all warranty claims American Metal Ware 87710E Coffee Urn Page 16 Service Troubleshooting Solid State Air Agitation A vibrator air pump is located in the control box This pump supplies the air to the coffee liners It is turned on directly by pushing the manual agitation switch and automatically by the brew timer or solid state relay in series with the brew timer The manual agitation switch is a momentary contact normally open single pole black push button switch Depressing the button closes the switch contacts completing the circuit to the air pump It is wired parallel to the automatic agitation circuit The automatic 30 second approx operation of the air pump is provided by the output of the solid state brew timer or a separate solid state agitation relay in series with the brew timer The delayed automatic agitation program 2 minute off time between end of spray and start of 30 second agitation uses a delay solid state relay in series with the brew timer The following trouble shooting guide assumes that internal wiring is correct and 120V AC power is provided 1 IF COFFEE LEVEL DOES NOT RISE BACK IN GAUGE GLASS or is unusually slow to come back up the very small vent hole in the clean out cap is clogged Clear vent using a Straight pin or similar obje
18. ew and Delayed Types At the end of the spray cycle the air pump turns itself on for about 30 seconds automatical ly This automatic agitation program is either built into the solid state spray cycle brew timer or is provided by a separate solid state agitation relay on equipment with mechanical timers Urns with delayed air agitation Option 43D have a two minute delay after the end of the brew cycle before the 30 second agitation cycle starts for improved mixing This delayed program is provided by a separate delay solid state relay Whenever power to the urn has been off such as upon installation the automatic agitation program will begin as soon as the power is turned on Otherwise it operates only after the end of spray Manual Agitation At any desired time holding in the manual agitation black push button switch will blend stored coffee Note The plug in the cleanout cap at the top of the coffee gauges must be pushed in completely to avoid air leaks Gauge glasses are cleaned with a gauge brush by first lifting out the top cap A slight twist will release a tightly sealed cap Be sure to replace the cap properly so that the agitation system can operate WARNING Overfiling coffee liners may damage air pumps Never overfill liners at any time Page 10 American Metal Ware 87710E Coffee Urn Operation Malfunction and Service Problem Thermostat dial turned to brew and water in tank remains cold Possible Cause Serv
19. ice Checks and Cures 1 No power at urn Check main switch Check main fuses Three on 3 phase power two on single phase power Check that pilot light at top of thermostat bezel is ON 2 Power at urn but no power Check urn control circuit breaker or fuse at heater terminals reset or replace if needed Check that water level is at STOP mark on gauge Check that power contractor has power at coil and clicks open and closed at thermostat dial is turned off and to BREW position Check control transformer if supplied It may be burned out Lastly check for voltage at heater terminals If voltage at heater is O K check for broken or loose wire Water must be showing in center gauge glass 2 if Opt 39 equipped 3 Power at heater terminals Check heater for an open circuit with but no heat ohmmeter or continuity tester If necessary replace heater It is necessary to remove coffee liner to replace electric heater PROBLEM Water boils continuously with thermostat dial on position BREW or HOLD Possible Cause Service Checks and Cures 1 Thermostat out of calibration Set knob on BREW and remove knob by pulling outward Using small screwdriver in center of shaft turn slotted screw clockwise until pilot light goes out Check holding temperature by adding cold water Light should come on and water heat up to high end of BREW zone on thermometer dial and then shut off NO BOILING 2 Thermostat is
20. inoperative If impossible to get control to cycle on and Fluid has leaked out of off and control temperature replace entire diastat assembly of thermostat control Be sure to drain water in urn below level at which bulb enters urn Also shut off all power before service is attempted 3 Contractor sticking in Contactor must click on and off If it sticks closed position replace American Metal Ware 87710E Coffee Urn Page 11 Dual Level Control Auto Refill And Low Water Cutoff System 1 Dual Level Control What it does A AUTO REFILL of the water compartment to keep the tank filled with water When water is used the fill valve opens automatically to let more in The fill valve closes when the water level reaches full B LOW WATER CUTOFF to prevent burn out of the electric immersion heater when there is not enough water to cover it When low water occurs the heat automati cally switches off The heat stays off until more water is added C A device called a DUAL LEVEL CONTROL keeps the tank filled with water and turns off the heat when water is low by simultaneously monitoring two different water levels 2 Description and Operation of the Dual Level Control System A Components 1 Dual Level Control switches power to both the thermostat and water inlet solenoid valve by sensing changes in water level Heat 120 VAC Fill Transformer Relays Printed Circuit c 0 2 Electrode Assembly co
21. mostat 3 Quick Service Check of Dual Level Control System 1 All wire secure and properly connected 2 Clean the electrodes Lime mineral scale build up can interfere with the operation of any liquid level control system 3 Check the common ground connection A little looseness or dirt can cause erratic operation American Metal Ware 87710E Coffee Urn Page 13 IV Trouble Shooting Auto Refill Low Water Cutoff and Dual Level Control System u do Ajddns duns SI POpIAOJ JI pue YO SI zey 0 s asny se uodws eins JeuiuJ9 ld O POUUOO jueuueoejdau AEN uonoeuuoo eJnoes poof quiesse ooe daJ poof suonoeuuoo pue peuJaJ ou ns J u1oq quiesse A ddns sayem yue JO ui S UIOd JEU os e SU Joules UO A ddns US9JJ pis no SI jeu os Joules UO 19945 uononjJjsul BBS
22. ng coil insulation 3 Are all system relays operating 4 Is system source pressure as specified 5 Are all system components free from obstruction Repair Kits The following Repair Kits are available Valve Valve Series Part No Series Part No 202CB B K 1063 204CD B K 1072 202CB F K 1066 204CD F K 1075 202CB N K 1067 204CD N K 1073 202CB P K 1064 204CD P K 1076 202CB T K 1068 204CD T K 1077 202CB V K 1065 204CD V K 1074 Valve Kit Series Part No For 1 4 Orifice Only 204CD B K 1162 204CD V K 1164 204CD T K 1167 204CD P K 1166 Coils 1 Junction box AMG is supplied as standard on all valves 2 The following coil housings are available a Conduit Connection AMC c Open Frame AMF b GROMMET 18 Leads AML d Spade Connection AMS 3 Use only Alco coils on Alco valves Alco Controls Division Emerson Electric Co P O Box 12700 St Louis Missouri 63141 314 569 4500 Customer Service 314 569 4666 ALCO American Metal Ware 87710E Coffee Urn mm mm HMHP SON Page 19 10 Lavd 31371809 SNIH 0 ATBMN3SSY American Metal Ware 87710E Coffee Urn Page 20 Peer Ty epar cy Sat mera MAM ONI XOg US3 MOOD 44 sale Page 21 American Metal Ware 87710E Coffee Urn List of Illustrated Parts see page 21 Dual Air Pum
23. nsists of a high short and a low extra long sensing electrode or probe molded in an epoxy body Red Wire Green Wire Green Wire 7 Red Wire Low Top Mounted Probes Side Mounted Probes 3 Metal Enclosure tank body provides a common ground connection for the electrode circuit 12 American Metal Ware 87710E Coffee Urn 2 Description and Operation of Dual Level Control System continued B Operation Water Level Action 1 Below both electrodes 1 Both and XL electrode circuits open Dual Level Control turns power on to wa fill valve and keeps power off to thermostat i Fill Solenoid Thermostat Valve 2 Rises to low electrode above 2 XL electrode circuit closes Power to above heater coils thermostat turned on Power to fill valve remains on Fill Solenoid 18 Valve Thermostat qeu e N ON 3 Rises to high electrode 3 electrode circuit closes Dual Level Control turns power off to fill valve and con tinues power to P Fill Solenoid Thermostat T Valve 4 Falls below high electrode only 4 6 circuit ee XL circuit stays closed After a few seconds delay power to fill valve is turned on Fill Solenoid Valve 5 Falls below low electrode 5 XL electrode circuit now opens Power Same as condition no 1 to thermostat is turned off Power to fill valve remains on Ther
24. ometer dial If the thermostat will not cycle replace the entire control Push Button Timer For Spray Over Control The function of the timer is to start the pump and run it for a preset period of time and upon lapse of this time to stop the pump thereby completing the spray over cycle This urn is equipped with an electric reset timer Pushing in the START button will start the flow of water The timer will complete the time cycle for which it has been programmed and on completion the flow will be stopped and the timer will reset itself ready for the next brewing cycle If electric power is cut off anywhere in the service coming to the urn during the timer operating cycle the timer will reset When the power is restored the timer must be restarted by pushing the START button Spray Rinse Of Liner To rinse the liner after brewing coffee swing the spray arm over the desired liner and push START button Allow hot water to spray from the spray arm for approximately 30 to 60 seconds and then push STOP button and drain the liner Page 8 American Metal Ware 87710E Coffee Urn Care and Cleaning of Coffee Urn 1 Always rinse the urn immediately after each use 2 Add small quantity of hot water brush sides and rinse with hot water until it runs clean Urn is now ready for next batch 3 At end of each day clean and brush urn several times then rinse thoroughly with hot water 4 Remove clean out cap at the end of the coffee faucet
25. on Plug Cleanout Cap with vent hole for Water 1 4 FPT Water Strainer Dial Thermometer Spray Nozzle w Body 10 Gallon Spray Arm Assembly O Ring amp Teflon Seal Kit Spray Arm Cover Handle Kit ATC Timer Standard ATC Timer w Lock amp 2 Keys Half Batch Timer Half Batch Selector Switch Dual Liquid Level Control Black Start Push Button Red Stop Push Button KR48 Thermostat Opt 47 Thermostat Heater Circuit Sprayover Pump Sprayover Pump Complete Assembly Pump Repair Kit Sprayover Pump Silicone Tubing 5 8 O D x 3 8 1 0 Pinch Clamp for 5 8 O D Tubing Electrode Assembly 6 amp 10 Gallon Pump Urn Dual Air Pump 512011 515001 712 050 531 024 5220001 537 060 537 061 537 062 532068 BB810 BB810 6 BB810WP BB6WP Silicone Tubing 1 4 O D x 1 8 D for Air Agitation Manual Agitation Push Button Solid State Delayed Air Agitation Relay Assembly Complete Solid State Delayed Air Agitation Relay Only Urn Liner Washer Alco Tank Refill Solenoid Valve Alco Valve Repair Kit Alco Valve Replacement Coil Boiler Drain Valve 10 Gallon Brew Basket 1 2 Batch Brew Basket 10 Gallon Filter Paper 6 Gallon Filter Paper Electric Heat Only 514005 514009 515072 4 Pole Heater Contactor 3 Pole Heater Contactor Circuit Breaker Heating Elements Specify Volts Watts amp Phase or Urn s Serial Number Steam Heat Onl 506009 506014 506016 532027A Steam Solenoid
26. p Electrode Assembly Timer Thermostat Cover Air Agitation Tubing Vent Tube Spray Arm Assembly Cover Handle Brew Basket Gauge Glass Assembly Faucet Leg Shank with Wing Coupling Nut Electric Immersion Water Heater Thermometer Circuit Breaker Manual Agitation Switch Fill Solenoid Valve Sprayover Pump ON gt lI lI lI ll S A rO O TE 21 Water Pressure Regulator 22 Heater Contactor 23 Liquid Level Control Dual 24 Power Input Terminal Block 25 Solid State Relay Automatic Air Agitation 26 Water Strainer 27 Start Push Button 28 Stop Push Button 29 Refill Water Inlet Standpipe 30 Boiler Drain Valve 31 Pump Silicone Tubing Page 22 American Metal Ware 87710E Coffee Urn 87710E Parts 522005 522046 522035 522048 522026 522027 522030 522094 522102 522120 A 682 A 689 A 1132 532064 506001 531011 1214031 521014 513001 507003 507011 530 007 531 012 549 000 515001 515002 504019 504001 533 012 533 004 533 013 512012 524006 712 017 508004 Gauge Shield Coffee 15 Gauge Shield Water 14 Gauge Glass Coffee 15 Gauge Glass Water 14 Upper Gauge Glass Washer Lower Gauge Glass Washer Gauge Shield Aluminum Bracket Coffee Water Faucet Silicone Seat Cup for Faucet Stainless Steel Spring for Faucet Gauge Shield Cap for Plug In cleanout cap Plug in Cleanout Cap with O Ring for Agitati
27. r more of fresh water in the urn with the cover partly open until the next use If cold water is used allow urn to cool to prevent cracking liner T The urn baskets may be cleaned by immersing them in urn cleaner solution and scrub bing with a stiff brush Rinse thoroughly and let dry Sprayheads should be checked to see that all holes are open If any are clogged remove sprayhead and use stiff wire to open 8 Don t use soap scouring powders or abrasives to clean coffee brewing equipment WARNING Cleaner used can affect taste of coffee if not thoroughly flushed out as covered above NOTE Coffee system cleaners that have been used successfully DIP IT manufactured by Economics Laboratories Inc 4 Corporate Park Drive White Plains NY 10604 OXYLITE manufactured by Avril Inc Syndet Division 601 N Third Street Reading PA 19601 TEMP KLEEN manufactured by Caddy Corp of America Pitman NJ 08071 American Metal Ware 87710E Coffee Urn Page 9 Solid State Coffee Agitation System Coffee agitation is accomplished with low pressure air bubbling up through the coffee in liner Air enters at the top coffee gauge elbow fittings and forces coffee down out of sight in gauge glasses during the agitation period Air continues through into the liner connection elbow and bubbles up from this center fitting The rich heavy portion of brew is carried up to the top and thoroughly mixed with weaker top level coffee Automatic Program End of Br
28. rew is accomplished automatically at the end of the brew cycle if the urn has an air agitation option Additional mixing can be performed at later time by pressing manual air agitation push button Where urn is not equipped with air agitation draw one gallon for each three gallons of finished brew from coffee faucet and pour over top into coffee liner The coffee is ready to serve 6 Hold coffee at 185 190 F or HOLD setting on thermostat knob Brewed coffee can be held at this temperature for up to one hour with minimal deterioration of flavor and body Explanation Of Brewing Cycle 1 When timer button is pushed the timer is activated 2 The timer completes the circuit to the sprayover pump which delivers hot water through the spray arm to the spray nozzle 3 The hot water from the spray nozzle is sprayed over the coffee grounds The finished brew collects in the coffee liner 4 As the pump delivers hot water from the water compartment through spray nozzle into brew basket the water level in the water compartment lowers 5 Drop in water level in water compartment below sensing probes activates liquid level control which opens the refill solenoid valve refilling the water compartment with cold water 6 The entry of the cold water activates the thermostat which allows power to go to the heating element to maintain the brewing temperature NOTE Some urns may be equipped with an optional adjustable bypass valve on the spra
29. rms to all local and national electric codes For dual voltage coils refer to the wiring schematic label on side of coil The coil circuit of each solenoid valve should be protected by adequate fuses WARNING If not properly grounded a hazard of electrical shock may exist Install and ground unit in compliance with National state and local electrical codes American Metal Ware 87710 Coffee Urn 2 3 Disassembly Disassemble in the same general order as indicated in exploded view illustrations except as noted in the following steps 1 2 De pressurize valve and disconnect electrical power source To remove solenoid coil Insert small screwdriver into gap in voltage nameplate Slide screwdriver tip under coil retainer and snap off If replacing coil use knife to separate adhesive backed valve nameplate from coil Keep valve nameplate To remove collar use service tool X11981 1 shown in Figure 1 Note Do NOT lose nameplate as it is extremely important if it becomes necessary to order a parts kit coil or duplicate valve Assembly 1 2 3 Assemble in the reverse general order of disassembly Lubricate gasket and O ring sparingly with a compatible lubricant such as a Silicon base lubricant All moving parts must move freely over the full length of its intended travel Troubleshooting 1 2 Check system fuses electrical wiring and system source voltage as specified Is flow direction
30. se to increase time Operation Start Up Checks Brew Cycle Adjustments 1 Turn thermostat dial to BREW position Pilot light at top of thermostat bezel should light up when thermometer pointer is at W in BREW zone this pilot light should go out Water in urn tank is now at brew temperature NOW and ONLY at initial start up we advise checking time of flow of hot water to spray nozzle 2 CHECKING SPRAYOVER VOLUME AND RATE REPEAT FOR EACH SPRAYARM Remove cover from brew basket over one liner Position spray nozzle over this brew basket Liner should be empty and faucet shut off Push in timer start button and brew pilot should light up Hot water should start to spray into brew basket Allow to spray until brew pilot light goes out and sprayover stops Measure amount sprayed over by drawing off into a calibrated one gallon measure amount is more or less than desired reset timer Longer time more sprayover shorter time less sprayover Each 1 4 minute increase or decrease adds or subtracts about 1 4 gallon to sprayover total Note that setting of sprayover bypass valve on sprayarm affects amount of sprayover Further adjustment of sprayover volume can be made using the internal bypass valve located in the side pump housing Screwdriver adjustment is under the hole plug closest to the urn body Open the valve for less sprayover close for more Valve is wide open when screwdriver slot is horizontal It is closed when slot is vertic
31. tion NOTE Although all valves can be operated in any position by mounting the valve upright there is less chance of malfunction caused by the collection of foreign material 2 The solenoid coil can be rotated 360 for ease of wiring If possible do not reduce the length of the solenoid coil wire leads so that if it becomes necessary to remove coil at a later date for valve cleanout etc wire leads will not have to be disconnected 3 To allow for removal of the solenoid coil without removing the valve from its piping allow at least 2 inches of clearance above the solenoid 4 Be sure valve is installed so that its flow arrow on valve body corresponds to direction of flow thru piping FLUID TEMPERATURE RATING F Elastomer Coil Code Code AMG AMC AHG AHC B 180 P 250 N 180 F 180 T 365 V 250 Identify valve elastomer code and coil code from valve model number and reference rating from table Valves are rated for use on air or other non hazardous non toxic fluids water and other aqueous non hazardous fluids and steam Page 18 5 Do not exceed MOPD Maximum Operating Pressure Differential or valve may fail to open when energized 6 CAUTION Always disconnect power source and depressurize the system before working on solenoid valve or system If the power disconnect is out of sight lock it in the open position and tag to prevent unexpected applications of power 7 Direction
32. y arm Adjustment of this valve will allow some spray water to bypass the brewing basket for additional control of the water coffee brewing formula and the extraction percentage from the coffee American Metal Ware 87710E Coffee Urn Page 7 Thermostat The thermostat is factory set so that the knob on the BREW setting holds the urn at brewing temperature toward the HI end of brew zone on the thermometer dial Then if turned back to HOLD position the thermostat should cycle on and off and hold at the LO end of the BREW zone on the thermometer Thermostat Adjustment 1 If the water temperature is below the HI end of the BREW zone on the thermometer dial with the knob on BREW setting remove the knob by pulling it straight outward Using a small screwdriver insert in the hole in the center of the shaft turn slotted screw counter clockwise until the red pilot light goes on Check to see that water in the urn holds at the HI end of the BREW zone on the thermometer and does not boil 2 If the water boils with the thermostat knob set at the BREW position remove the knob by pulling it straight outward Using a small screwdriver insert into the hole in the center of the shaft turn slotted screw clockwise until the red pilot light goes out Hold shaft so it does not turn while adjusting screw Add cold water and check that the heat comes back on pilot light glows and that the thermostat cycles at temperature at HI end of the BREW zone on therm
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