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Bunn Espress ES-1A, Operating & Service Manual, Page: 1 / 28

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BUNN

Espress 

TM

OPERATING & SERVICE MANUAL

BUNN-O-MATIC CORPORATION

POST OFFICE BOX 3227

SPRINGFIELD, ILLINOIS 62708-3227

PHONE: (217) 529-6601   FAX: (217) 529-6644

10712.0000A   7/93  ©1993 Bunn-O-Matic Corporation

ES•1A

ES•1A

TM

ESPRESSO/CAPPUCCINO

COFFEE BREWER

P-176

DISCONTINUED VERSION

The information in this manual

is no longer current.

Summary of Contents for Espress ES-1A

Page 1: ...POST OFFICE BOX 3227 SPRINGFIELD ILLINOIS 62708 3227 PHONE 217 529 6601 FAX 217 529 6644 10712 0000A 7 93 1993 Bunn O Matic Corporation ES 1A ES 1A TM ESPRESSO CAPPUCCINO COFFEEBREWER P 176 DISCONTIN...

Page 2: ......

Page 3: ...Warranty 2 User notices 3 Features 4 9 Installation 10 Initial setup use 11 Programming 12 Cleaning 13 Trouble shooting 14 15 Schematic plumbing 16 Schematic electrical 17 Replacement parts 18 25 Fre...

Page 4: ...n prompt notice of any claim to be made under this warranty by telephone at 217 529 6601 or by writing to Post Office Box 3227 Springfield Illinois 62708 3227 If requested by Bunn the Buyer shall ship...

Page 5: ...0000 CAUTION HOT Liquid Steam Surfaces NOTICE 160 psig max operating pressure 24246 0000 24247 0000 12652 0000 Fill water tank before turning on thermostat or connecting appliance to power source Do...

Page 6: ...assures that boiler pressure never exceeds the safety limits it automatically discharges steam whenpressureinsidetheboilerexceeds1 8bar 26 1psi Thewaterheatingelementisanelectricresistance unit contro...

Page 7: ...s when the brewing process infusion begins The bubbling effect is produced by an interchange between air contained in a bubble formed in the chamber and water which progressively increases it s pressu...

Page 8: ...on and by placing the front piece at a right angle access to the interior of the control panel is obtained Finally by removing the work tray 5 and the drainage tray 6 access is gained to all the eleme...

Page 9: ...iner for coffee 4 Work tray 5 Steam outlet tube 6 Hot water rinse outlet tube 7 Pressure gauge pump steam 8 Group head espresso extraction chamber 9 Cup heater tray 10 Power light 11 Refill light 12 A...

Page 10: ...automatic refill Warning alarm visual only not audible on automatic refill This alarm goes off when the water entering the boiler does not reach its required level within a predetermined period of ti...

Page 11: ...the inputs and to the outputs of the information coming to the central unit from the volumetric counter the electronic level or the programming switch There is also a single connection with a flat wi...

Page 12: ...nding pipes which are packed with the machine in the following way From the electric pump to the water conditioner and from the conditioner to the tap inlet In the event a water purifier is not instal...

Page 13: ...to the ON center position 10 Allow the water in the tank to heat to the proper temperature before using the brewer 11 Press any of the automatic brewing buttons This causes hot water to circulate and...

Page 14: ...s 3 The Continuous dosage is not programmable Pre infusion programming Pre infusion causes a non programmable amount of brew water to be injected into the bed of coffee at the beginning of the brew cy...

Page 15: ...about 15 seconds to clean it out 6 The group head is to be cleaned daily a Unit needs to be heated to normal operating temperature This provides very hot water that will do the best cleaning b Instal...

Page 16: ...oard failure will normally be permanent If an intermittent condition is encountered the cause will likely be a switch contact or a loose connection at a terminal or crimp WARNINGS Exercise extreme cau...

Page 17: ...block on the pump If correct voltage is present use a flat blade screwdriver to turn the motor shaft on the rear end of the motor to see if the pump itself is locked up If the shaft does not turn rep...

Page 18: ...2 Check valve 3 Refill solenoid 4 Flowmeter 5 Steam valve 6 Hot water rinse valve 7 Liquid level probe 8 Pressure relief valve 9 Pressure switch 10 Pressure gauge Pump Steam 11 Compensation valve ant...

Page 19: ...3 4 5 8 A B C D E H 1 2 3 4 5 8 A B C D E H CONTROL SWITCH LOGIC TABLE BLK WHI BLK LIMIT THERMOSTAT LIMIT THERMOSTAT BLU TANK HEATERS SW PRESSURE BLK BLK ELECTRONIC CONTROLLER BLK BLU TAN TAN TAN SOL...

Page 20: ...0 Screw 24004 0800 11 Cable clamp 23635 0000 12 Top cup warmer panel 23658 0000 Figure Description Part Number 13 Back panel 23656 0000 14 Side panel right 23668 0000 15 Programming switch toggle 2281...

Page 21: ...23605 0000 8 Seal washer 23628 0000 9 Pressure pop off valve 22575 0000 10 Compensation valve 23603 0000 P 166 Figure Description Part Number 11 Flat washer 24030 0001 12 Tank 23647 0000 13 Drain plug...

Page 22: ...r 22867 0000 11 Spring 23589 0000 12 Filter screen 23588 0000 13 Holder filter screen 23587 0000 Figure Description Part Number 14 O ring 23586 0000 15 Hex seat group solenoid 23585 0000 16 Gasket gro...

Page 23: ...3662 0000 13 O ring 23571 0000 14 Hot water rinse tube 23570 0000 Figure Description Part Number 15 Hot water rinse nozzle 22844 0000 16 Assy steam faucet wands 23574 0000 17 Hex ftg hsg steam faucet...

Page 24: ...g 23560 0000 12 Spring 23579 0000 13 Seat holder relief valve 23559 0000 14 Rubber seat plunger 23557 0000 15 Pressure vent housing 23558 0000 Figure Description Part Number 16 O ring 23555 0000 17 Sp...

Page 25: ...3550 0000 5 Screw 23932 0000 6 Handle 23644 0000 7 Complete filter holder assy 2 cup 23549 0000 8 Dispense nozzle 1 cup 23547 0000 P 170 Figure Description Part Number 9 Complete holder assy 1 cup 235...

Page 26: ...3624 0000 17 Flat washer 22868 0000 18 Flow meter complete 22775 0000 19 Ribbon cable 24811 0000 5 9 8 7 10 11 12 13 14 15 16 17 18 6 P 171 Figure Description Part Number 1 Screw 24004 0700 2 Electron...

Page 27: ...12 Upper copper tube exch to group 23612 0000 13 Copper tube press gauge pump 23611 0000 Figure Description Part Number 1 Copper tube pump inlet 23623 0000 2 Copper tube pump out to rlf chk 23622 0000...

Page 28: ......

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