Bunn Espress ES-2SA Operating & Service Manual
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Bunn Espress ES-2SA Operating & Service Manual

Bunn Espress ES-2SA Operating & Service Manual

Espresso/cappuccino coffee brewers
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BUNNEspress
®
ESPRESSO/CAPPUCCINO
COFFEE BREWERS
DISCONTINUED VERSION
The information in this manual
is no longer current.
P-244/P-245
E S • 2 A
/ E S • 2 S A
E S • 2 A
/ E S • 2 S A
TM
TM
OPERATING & SERVICE MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
22700.0000A 11/93 ©1993 Bunn-O-Matic Corporation

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Summary of Contents for Bunn Espress ES-2SA

  • Page 1 / E S • 2 S A E S • 2 A / E S • 2 S A OPERATING & SERVICE MANUAL BUNN-O-MATIC CORPORATION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 FAX: (217) 529-6644 22700.0000A 11/93 ©1993 Bunn-O-Matic Corporation...

  • Page 3: Table Of Contents

    BUNN Espress™ Warranty ...2 User Notices...3 Features ... 4-5 Installation Plumbing ... 6 Electrical Requirments and Hook-up ... 7 Initial Setup ...8 Programming ... 9 Brewing Procedures ... 10 Cleaning ...11 Trouble Shooting ... 12-13 Push-button Board Repacement ...14 Replacement Parts... 16-31 Wiring Diagrams...

  • Page 4: Warranty

    The Buyer shall give Bunn 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.

  • Page 5: User Notices

    Do not use near combustibles. FAILURE TO COMPLY RISKS EQUIPMENT DAMAGE, FIRE, OR SHOCK HAZARD READ THE ENTIRE OPERATING MANUAL BEFORE BUYING OR USING THIS PRODUCT THIS APPLIANCE IS HEATED WHENEVER CONNECTED TO A POWER SOURCE 00831.0000F 3/98 © 1988 BUNN-O-MATIC CORPORATION 00831.0000 ES•2A™/ES•2SA™...

  • Page 6: Features

    BUNN Espress™ HOT WATER RINSE DISPENSING TUBE AND STEAM DISPENSING TUBE The ES•2A™ ES•2SA™are equipped with a hot water rinse dispensing tube and two steam dispensing tubes. The Hot Water rinse dispensing tube is controlled by a knob centrally located on the front of the brewer.

  • Page 7: Water Treatment

    BUNN Espress™ IMPORTANT: None of the high pressure pumps found on the market can operate without water for a period of more than approximately ONE MINUTE, After one minute of dry operation the pump will seize and become unserviceable. Should water be shut off disconnect pump from power supply immediately.

  • Page 8: Plumbing Requirements

    BUNN Espress™ PLUMBING REQUIREMENTS This brewer must be connected to a cold water system with an operating pressure between 20 and 90 psi. A shut-off valve should be installed before the pump. Install a pressure regulator in the line when the pressure is greater than 90 psi.

  • Page 9: Electrical Specifications

    BUNN Espress™ ELECTRICAL SPECIFICATIONS This brewer requires a 2-wire grounded service rated 208 to 240 volts ac, 20 amp, single phase, 60 ELECTRICAL HOOKUP CAUTION: Improper installation will damage electronic components. 1. An electrician must provide electrical service as specified.

  • Page 10: Initial Setup

    BUNN Espress™ START-UP Retighten the tank cover bolts, nuts, flat section strips, tank heaters, and the individual tank section lids (at upper part of the tank). Fill the tank with water to the optimum water level zone (N) using the water feed tap.

  • Page 11: Preinfusion Programming

    BUNN Espress™ PUSH-BUTTON SET (AUTOMATICS ONLY) This set is made up of five push-buttons (A,B,C,D, and E) and one pilot light (F). The A, B, C, and D push-buttons are used to select the four possible water dosed and the E push-button is for continuous infusion injection.

  • Page 12: Coffee Extraction

    BUNN Espress™ COFFEE EXTRACTION 1. Place ground coffee in the filter holder, shake it level, and compress the bed of coffee with the tamper on the grinder. 2. Clean the edge of the filter holder with the palm of the hand before locking it on to the set. This will prevent any coffee particles from imbedding themselves into the group gasket.

  • Page 13: Cleaning

    BUNN Espress™ CLEANING 1. The use of a damp cloth rinsed in any mild, nonabrasive, liquid detergent is recommended for cleaning all surfaces on Bunn-O-Matic equipment. 2. A cleaning cycle must be ran nightly. To do this: a) insert solid filter basket into filter holder.

  • Page 14: Troubleshooting

    BUNN Espress™ A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic Technical Service Department at 1-800-637-8606. • Inspection, testing, and repair of electrical equipment should be performed only by qualified service personnel.

  • Page 15: Trouble Shooting

    BUNN Espress™ Problem Brew cycle will not start (cont.) Water is not hot or long recovery time. DOSAGE PULSOMETER MALFUNCTION ALARM This alarm is activated if, for any reason, the pump is running and the metering pulses of the volumetric meter are not received by the central control unit, or when there is a time period longer than 5 seconds (approximately) between meter pulses.

  • Page 16: Board Replacement

    BOARD REPLACEMENT BUNN Espress™ PUSH-BUTTON BOARD CONNECTIONS All the set push-button boards are the same and are to be coded only according to the place they occupy with respect to the infusion units. The numbering order of the infusion units (lst, 2nd, 3rd and 4th), always counted facing the machine and from left to right.
  • Page 17 ES•2A™/ES•2SA™ BUNN Espress™...

  • Page 18: Replacement Parts

    REPLACEMENT PARTS ES•2A™/ES•2SA™ BUNN Espress™ P-225...
  • Page 19 ES•2A™/ES•2SA™ BUNN Espress™ REPLACEMENT PARTS Figure Description Part Number 1 ... Vented top panel (hood) ... 22795.0000 2 ... Top cup warmer panel ... 22319.0001 3 ... Divider panel ... 22782.0000 4 ... Hood corner piece (left & right) ... 22789.0000 5 ...
  • Page 20 ES•2A™/ES•2SA™ BUNN Espress™ REPLACEMENT PARTS REPLACEMENT PARTS P-235...
  • Page 21 BUNN Espress™ REPLACEMENT PARTS Figure Description 1 ... Inlet water fitting ... 22849.0000 2 ... Brew water inlet tube ... 22614.0000 3 ... Heat exchanger bulkhead ... 22835.0000 4 ... Nut ... 24048.0100 5 ... Split lock washer ... 24028.0100 6 ...
  • Page 22 REPLACEMENT PARTS BUNN Espress™ Solenoid rebuild kit– Part # 22811.0000 Group assy. (items 1-10)– Part # 22711.0000 Figure 1 ... Solenoid mounting screws ... 24005.0400 2 ... Solenoid assembly ... 22712.0000 3 ... Group head end plug ... 22806.0000 4 ... Group head end plug gasket ... 22808.0000 5 ...
  • Page 23 REPLACEMENT PARTS BUNN Espress™ Figure Description 1 ... Tank drain screw ... 24006.0400 2 ... Tank drain screw gasket ... 22836.0000 3 ... Lower sight gauge elbow ... 22644.0000 4 ... Seal washer ... 22616.0000 5 ... Sight gauge glass gasket ... 22617.0000 6 ...
  • Page 24 REPLACEMENT PARTS BUNN Espress™ Complete valve assy.– Part # 22685.0000 30 31 32 ES•2A™/ES•2SA™ 24/25 P-240...
  • Page 25 ES•2A™/ES•2SA™ BUNN Espress™ REPLACEMENT PARTS Figure Description Part Number 1 ... Actuator shaft - steam valve ... 22684.0000 2 ... Steam valve collar nut ... 22824.0000 3 ... Insert washer ... 22862.0000 4 ... Blue rubber gasket - steam valve ... 22605.0000 5 ...
  • Page 26 BUNN Espress™ Complete valve assy.– (items 1-14) Part # 22637.0000 REPLACEMENT PARTS Complete assy.– Part # 22658.0000 ES•2A™/ES•2SA™ P-239...
  • Page 27 ES•2A™/ES•2SA™ BUNN Espress™ REPLACEMENT PARTS Figure Description Part Number 1 ... Hex nut – plunger shaft ... 22863.0000 2 ... Black thrush washer ... 22624.0000 3 ... Faucet valve detent pins ... 22845.0000 4 ... Faucet valve detent ... 22626.0000 5 ...
  • Page 28 REPLACEMENT PARTS ES•2A™/ES•2SA™ BUNN Espress™ P-238...
  • Page 29 BUNN Espress™ REPLACEMENT PARTS Figure 1 ... Dispense nozzle - 2 cup ... 22802.0000 2 ... Nozzle seal washer ... 22803.0000 3 ... Filter holder ... 22801.0200 4 ... Filter support wire ... 22819.0000 5 ... Filter - 2 cup ... 22710.0000 6 ...
  • Page 30 BUNN Espress™ REPLACEMENT PARTS 35 36 ES•2A™/ES•2SA™ P-237...
  • Page 31 ES•2A™/ES•2SA™ BUNN Espress™ REPLACEMENT PARTS Figure Description Part Number 1 ... Pressure switch - heater control ... 22574.0000 2 ... Pressure gauge mounting bracket ... 22645.0000 3 ... Front hood face plate - 2 group ... 22796.0000 4 ... Pump pressure gauge ... 22692.0000 5 ...
  • Page 32 ES•2A™/ES•2SA™ BUNN Espress™ REPLACEMENT PARTS Figure Description Part Number 1 ... Red push button on/off switch ... 22687.0000 2 ... Brew indicator light ... 22689.0000 3 ... Switch/lamp mounting bracket screw ... 24005.0200 4 ... Switch/lamp mounting bracket ... 22880.0000 5 ...

  • Page 33: Replacement Parts

    BUNN Espress™ REPLACEMENT PARTS Figure Description 1 ... Water strainer 2 ... Cordset ... 01699.0000 3 ... Limit thermostat ... 04680.0004 4 ... Contactor coil ... 06335.0002 5 ... Indicator lamp (240 volt) ... 12984.0003 6 ... Pressure switch (water inlet) ... 21397.0000 7 ...

  • Page 34: Wiring Diagrams

    ES•2A™/ES•2SA™ BUNN Espress™ SCHEMATIC ES•2SA P-243...
  • Page 35 ES•2A™/ES•2SA™ BUNN Espress™ SCHEMATIC ES•2A P-244...

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Espress es-2a

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