Instruction/ maintenance manual of the product ES2SA Bunn
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B UNN E spr ess TM OPERA TING & SER VICE MANU AL B UNN-O-MA TIC CORPORA TION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 F AX: (217) 529-6644 22700.
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1 BUNN E spr ess™ ES•2A™/ES•2SA™ INDEX W arranty .............................................................. 2 User Notices ........................................................ 3 F eatures .............................................
BUNN E spr ess™ ES•2A™/ES•2SA™ 2 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.
3 BUNN E spr ess™ ES•2A™/ES•2SA™ USER NO TICES The notices on this brewer should be kept in good condition. Replace unreadable or damaged labels. 00831.0000 NOTICE This “ Manual Fill Valve” is to be used during installation ONLY! Watch the sight gage during use and do not fill past normal line! 24245.
BUNN E spr ess™ ES•2A™/ES•2SA™ 4 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.
5 BUNN E spr ess™ ES•2A™/ES•2SA™ FEA TURES 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.
BUNN E spr ess™ ES•2A™/ES•2SA™ 6 PLUMBING 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.
7 BUNN E spr ess™ 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.
BUNN E spr ess™ ES•2A™/ES•2SA™ 8 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.
9 BUNN E spr ess™ 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.
BUNN E spr ess™ ES•2A™/ES•2SA™ 10 BREWING 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.
11 BUNN E spr ess™ ES•2A™/ES•2SA™ CLEANING 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.
BUNN E spr ess™ ES•2A™/ES•2SA™ 12 TR OUBLESHOO TING 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.
13 BUNN E spr ess™ ES•2A™/ES•2SA™ TR OUBLESHOO TING Probable cause Pump Start switch Limit thermostat Tank heaters Remedy When starting switch is pressed, pump should turn on immediately. If this dies not happen, check voltage at terminal block on the pump.
BUNN E spr ess™ ES•2A™/ES•2SA™ 14 BO ARD REPLA CEMENT 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.
15 BUNN E spr ess™ ES•2A™/ES•2SA™.
BUNN E spr ess™ ES•2A™/ES•2SA™ 16 1 23 4 6 5 7 13 14 15 16 17 18 19 20 27 28 26 12 11 10 9 8 P-225 21 22 25 24 23 REPLA CEMENT P AR TS.
17 BUNN E spr ess™ ES•2A™/ES•2SA™ Figure Description Part Number 1 .................. Vented top panel (hood) ......................... 22795.0000 2 .................. Top cup warmer panel ............................ 22319.0001 3 ..........
BUNN E spr ess™ ES•2A™/ES•2SA™ 18 24 9 12 13 14 15 16 17 18 19 20 21 22 23 26 28 P-235 5 4 29 30 7 6 5 4 3 1 2 10 8 11 27 25 REPLA CEMENT P AR TS REPLA CEMENT P AR TS.
19 BUNN E spr ess™ ES•2A™/ES•2SA™ Figure Description Part Number 1 .................. Inlet water fitting ..................................... 22849.0000 2 .................. Brew water inlet tube .............................. 22614.0000 3 .
BUNN E spr ess™ ES•2A™/ES•2SA™ 20 Figure Description Part Number 1 .................. Solenoid mounting screws ...................... 24005.0400 2 .................. Solenoid assembly .................................. 22712.0000 3 .........
21 BUNN E spr ess™ ES•2A™/ES•2SA™ Figure Description Part Number 1 .................... Tank drain screw .......................................... 24006.0400 2 .................... Tank drain screw gasket .............................. 22836.
BUNN E spr ess™ ES•2A™/ES•2SA™ 22 2 3 4 5 1 7 6 15 14 13 12 11 10 9 8 22 21 20 16 17 18 19 23 26 28 27 29 34 33 30 31 32 24/25 Complete v alv e assy .
23 BUNN E spr ess™ ES•2A™/ES•2SA™ Figure Description Part Number 1 .................. Actuator shaft - steam valve .................... 22684.0000 2 .................. Steam valve collar nut ............................. 22824.0000 3 .......
BUNN E spr ess™ ES•2A™/ES•2SA™ 24 REPLA CEMENT P AR TS 1 2 2 3 4 4 5 6 14 13 12 11 10 8 7 9 15 16 19 20 18 17 21 22 23 25 24 26 27 28 29 30 31 32 30 Complete v alv e assy .
25 BUNN E spr ess™ ES•2A™/ES•2SA™ Figure Description Part Number 1 .................. Hex nut – plunger shaft ........................... 22863.0000 2 .................. Black thrush washer ................................ 22624.0000 3 ...
BUNN E spr ess™ ES•2A™/ES•2SA™ 26 2 3 4 5 11 1 9 8 7 6 12 13 14 15 17 10 16 P-238 REPLA CEMENT P AR TS.
27 BUNN E spr ess™ ES•2A™/ES•2SA™ Figure Description Part Number 1 .................. Dispense nozzle - 2 cup ......................... 22802.0000 2 .................. Nozzle seal washer ................................. 22803.0000 3 .......
BUNN E spr ess™ ES•2A™/ES•2SA™ 28 38 P-237 27 28 37 39 19 22 21 20 23 30 31 34 33 32 11 12 13 14 2 3 4 5 1 15 16 17 9 7 8 10 18 6 24 25 26 29 35 36 REPLA CEMENT P AR TS.
29 BUNN E spr ess™ ES•2A™/ES•2SA™ Figure Description Part Number 1 .................. Pressure switch - heater control .............. 22574.0000 2 .................. Pressure gauge mounting bracket ............ 22645.0000 3 .................
BUNN E spr ess™ ES•2A™/ES•2SA™ 30 Figure Description Part Number 1 .................. Red push button on/off switch ................. 22687.0000 2 .................. Brew indicator light ................................ 22689.0000 3 ........
31 BUNN E spr ess™ ES•2A™/ES•2SA™ Replacement Parts Not Illustrated Figure Description Part Number 1 .......... Water strainer 3 ⁄ 8 ” x 3 ⁄ 8 ” mflrd ............................................... 01245.0000 2 .......... Cordset ..
BUNN E spr ess™ ES•2A™/ES•2SA™ 32 P-243 SCHEMA TIC ES•2SA.
33 BUNN E spr ess™ ES•2A™/ES•2SA™ P-244 SCHEMA TIC ES•2A.
An important point after buying a device Bunn ES2SA (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Bunn ES2SA yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Bunn ES2SA - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bunn ES2SA you will learn all the available features of the product, as well as information on its operation. The information that you get Bunn ES2SA will certainly help you make a decision on the purchase.
If you already are a holder of Bunn ES2SA, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Bunn ES2SA.
However, one of the most important roles played by the user manual is to help in solving problems with Bunn ES2SA. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bunn ES2SA along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center