BUNNEspress ® ESPRESSO/CAPPUCCINO COFFEE BREWERS DISCONTINUED VERSION The information in this manual is no longer current. P-244/P-245 E S • 22 A / EE 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.
BUNN Espress™ INDEX ES•2A™/ES•2SA™ Warranty ..............................................................2 User Notices........................................................3 Features .......................................................... 4-5 Installation Plumbing ............................................... 6 Electrical Requirments and Hook-up .... 7 Initial Setup ...........................................8 Programming ........................................ 9 Brewing Procedures ............
BUNN Espress™ WARRANTY ES•2A™/ES•2SA™ Bunn-O-Matic Corp. (“Bunn”) warrants the equipment manufactured by it to be commercially free from defects in material and workmanship existing at the time of manufacture and appearing within one year from the date of installation.
BUNN Espress™ USER NOTICES ES•2A™/ES•2SA™ The notices on this brewer should be kept in good condition. Replace unreadable or damaged labels. 24247.0000 This equipment is to be installed to comply with the Basic Plumbing Code of the Building Officials and Code Administrators International, Inc. (BOCA) and the Food Service Sanitation Manual of the Food and Drug Administration (FDA). 00656.0000 CAUTION HOT Liquid-Steam-Surfaces 24246.
BUNN Espress™ FEATURES ES•2A™/ES•2SA™ 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. The Steam dispensing tubes are controlled by knobs located on the left and right side of the brewer, right knob controls the right side steam tube and the left knob controls the left side steam tube.
BUNN Espress™ FEATURES ES•2A™/ES•2SA™ 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. 7 6 4 3 9 11 10 2 12 1 P-158 Group head (Espresso extraction chamber) The group head-espresso extraction chamber is where the coffee infusion takes place.
PLUMBING BUNN Espress™ ES•2A™/ES•2SA™ 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. to reduce the pressure to 50 psi. The water inlet fitting is a 3/8 flare.
BUNN Espress™ ELECTRICAL ES•2A™/ES•2SA™ ELECTRICAL SPECIFICATIONS This brewer requires a 2-wire grounded service rated 208 to 240 volts ac, 20 amp, single phase, 60 Hz. ELECTRICAL HOOKUP CAUTION: Improper installation will damage electronic components. 1. An electrician must provide electrical service as specified. 2. Using a voltmeter, check the voltage and color coding of each conductor at the electrical source. 3. The plug for the brewer is to be supplied by the installer. 4.
BUNN Espress™ INITIAL SETUP ES•2A™/ES•2SA™ 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. In the models with and electronic water level control fill the tank to the minimum water level zone (-). Connect the electrical system. Turn on the toggle switch located on the base (left side bottom).
BUNN Espress™ PROGRAMMING ES•2A™/ES•2SA™ 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. The F pilot light indicates that the unit is operating.
BUNN Espress™ BREWING ES•2A™/ES•2SA™ 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. 3. Place the filter holder in the set and twist it to the right until tight. Do not force the filter holder excessively. 4.
BUNN Espress™ CLEANING ES•2A™/ES•2SA™ 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. b) Put 1 teaspoon of Cascade cleaning detergent into filter basket.
BUNN Espress™ TROUBLESHOOTING ES•2A™/ES•2SA™ 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. • Solenoid removal requires interrupting the water supply to the valve.
BUNN Espress™ Problem Brew cycle will not start (cont.) TROUBLESHOOTING ES•2A™/ES•2SA™ Probable cause Pump Remedy When starting switch is pressed, pump should turn on immediately. If this dies not happen, check voltage at terminal 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 dies no turn, replace pump assembly.
BUNN Espress™ BOARD REPLACEMENT ES•2A™/ES•2SA™ 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.
ES•2A™/ES•2SA™ BUNN Espress™ 15
21 22 23 25 24 26 27 28 1 20 19 2 18 3 4 17 16 5 15 6 14 7 13 12 11 8 10 REPLACEMENT PARTS ES•2A™/ES•2SA™ 9 BUNN Espress™ P-225 16
BUNN Espress™ REPLACEMENT PARTS ES•2A™/ES•2SA™ 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 .................. Cage nut (10-32) ..................................... 22851.0000 6 ..........
REPLACEMENT PARTS ES•2A™/ES•2SA™ 1 2 3 30 29 4 5 4 5 67 8 REPLACEMENT PARTS 28 27 9 10 24 22 26 25 23 21 20 19 18 17 11 12 13 16 14 15 BUNN Espress™ P-235 18
BUNN Espress™ REPLACEMENT PARTS ES•2A™/ES•2SA™ Figure Description Part Number 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.
BUNN Espress™ REPLACEMENT PARTS ES•2A™/ES•2SA™ 1 2 16 Solenoid rebuild kit– Part # 22811.0000 3 4 15 14 13 5 12 11 6 7 8 9 Group assy. (items 1-10)– Part # 22711.0000 10 Figure Description Part Number 1 .................. Solenoid mounting screws ...................... 24005.0400 2 .................. Solenoid assembly .................................. 22712.0000 3 .................. Group head end plug .............................. 22806.0000 4 .................. Group head end plug gasket .....
REPLACEMENT PARTS ES•2A™/ES•2SA™ BUNN Espress™ 11 12 13 14 15 16 10 4 9 8 7 6 5 4 3 2 1 Figure Description Part Number 1 .................... 2 .................... 3 .................... 4 .................... 5 .................... 6 .................... 7 .................... 8 .................... 9 .................... 10 .................. 11 .................. 12 .................. 13 .................. 14 .................. 15 .................. 16 .................. Tank drain screw .....
REPLACEMENT PARTS ES•2A™/ES•2SA™ BUNN Espress™ 15 14 13 12 11 10 9 8 7 6 5 4 3 2 Complete valve assy.– Part # 22685.
BUNN Espress™ REPLACEMENT PARTS ES•2A™/ES•2SA™ 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 .................. Spring support washer ............................. 24028.0000 6 ..........
REPLACEMENT PARTS ES•2A™/ES•2SA™ BUNN Espress™ 8 7 Complete valve assy.– (items 1-14) Part # 22637.0000 3 4 6 5 4 9 2 1 17 2 10 11 18 15 12 13 14 19 16 29 28 20 30 31 27 30 26 32 25 24 23 22 21 Complete assy.– Part # 22658.
BUNN Espress™ REPLACEMENT PARTS ES•2A™/ES•2SA™ 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 .................. Copper seal washer ................................. 22839.0000 6 ......
BUNN Espress™ REPLACEMENT PARTS ES•2A™/ES•2SA™ 12 11 5 9 4 7 3 6 2 10 13 8 14 1 15 16 17 P-238 26
BUNN Espress™ REPLACEMENT PARTS ES•2A™/ES•2SA™ Figure 1 .................. 2 .................. 3 .................. 4 .................. 5 .................. 6 .................. 7 .................. 8 .................. 9 .................. .................... 10 ................ 11 ................ .................... 12 ................ 13 ................ 14 ................ 15 ................ 16 ................ 17 ................ Description Part Number Dispense nozzle - 2 cup ................
REPLACEMENT PARTS ES•2A™/ES•2SA™ BUNN Espress™ 2 1 3 4 5 11 12 9 13 6 14 7 8 18 17 16 34 10 15 33 32 31 30 35 36 38 19 20 23 21 22 24 39 37 25 29 26 27 28 P-237 28
BUNN Espress™ REPLACEMENT PARTS ES•2A™/ES•2SA™ Figure 1 .................. 2 .................. 3 .................. 4 .................. 5 .................. 6 .................. 7 .................. 8 .................. 9 .................. 10 ................ 11 ................ 12 ................ 13 ................ 14 ................ 15 ................ 16 ................ 17 ................ 18 ................ 19 ................ 20 ................ 21 ................ 22 ................ 23 ....
BUNN Espress™ REPLACEMENT PARTS ES•2A™/ES•2SA™ 3 5 4 2 1 6 7 8 9 10 11 12 Figure 1 .................. 2 .................. 3 .................. 4 .................. 5 .................. 6 .................. 7 .................. 8 .................. 9 .................. 10 ................ 11 ................ 12 ................ Description Part Number Red push button on/off switch ................. 22687.0000 Brew indicator light ................................ 22689.
BUNN Espress™ REPLACEMENT PARTS ES•2A™/ES•2SA™ Replacement Parts Not Illustrated Figure Description Part Number 3 3 1 .......... Water strainer ⁄8” x ⁄8” mflrd ............................................... 01245.0000 2 .......... Cordset ............................................................................... 01699.0000 3 .......... Limit thermostat .................................................................. 04680.0004 4 .......... Contactor coil ...........................................
BUNN Espress™ SCHEMATIC ES•2A™/ES•2SA™ ES•2SA P-243 32
BUNN Espress™ SCHEMATIC ES•2A™/ES•2SA™ ES•2A P-244 33