Bunn service manual Brewing, Coffee Extraction, Observations, BUNN Espress, ES2A/ES2SA

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BREWING

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.Press any one of the four dosification buttons or the continuous draw button according to the dose required.

5.Extraction ends automatically. If the continuous liquid dispensing button was pressed, dispensing can be stopped by pressing on any one of the five buttons. The automatic liquid extraction caused by using one of the four dosification buttons can be stopped by pressing any of the dosification buttons.

NOTE: The automatic selections have regulated doses, these can be set between 0 and 500 cc

The machines leave the factory with regulators adjusted for the following approximate amounts:

One short coffee:

50 cc of water

One normal coffee:

100 cc of water

Two short coffees:

100 cc of water

Two normal coffees:

200 cc of water

It should be noted that these doses have been set without coffee in the filter holder. With coffee, the volumes are slightly less. Should different volumes be required, refer to (Programming dosifications)

OBSERVATIONS

IT IS OF THE UTMOST IMPORTANCE FOR THE INFUSER UNIT OPERATION that there is no intermediate space between the pressed coffee and the injector spray head. Coffee dosage is 6 grams, although it may be more or less depending on the degree of grinding, coffee quality, etc. Perfect grinding of the coffee gives it a better creme’. If it is observed that the coffee is produced drop by drop, it means that it is ground too fine, and if the coffee comes out too quickly, it means that the grounds have not been ground fine enough.

During long periods in which the machine is not operating, drain the tank and clean the exterior of the machine, disconnect the power supply and cover the machine.

For optimum operation and conservation, all the elements of the machine should periodically be lubricated.

Before making the first cup of coffee, it is recommended to run water through the unit to heat up the system.

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Contents BUNNEspress E S 2A TM / ES 2SA TMESPRESSO/CAPPUCCINO COFFEE BREWERS DISCONTINUED VERSION The information in this manualPage BUNN Espress INDEXES2A/ES2SA InstallationWARRANTY USER NOTICES READ THE ENTIRE OPERATING MANUAL BEFORE BUYING OR USING THIS PRODUCTLiquid-Steam-Surfaces 00831.0000F 3/98 1988 BUNN-O-MATIC CORPORATIONFEATURES HOT WATER RINSE DISPENSING TUBE AND STEAM DISPENSING TUBEWATER FEED TAP LEVELGroup head Espresso extraction chamber WATER TREATMENTPLUMBING PLUMBING REQUIREMENTSPLUMBING HOOK-UP ELECTRICAL SPECIFICATIONS ELECTRICALELECTRICAL HOOKUP L1 240V or L2 GndINITIAL SETUP START-UPPROGRAMMING PUSH-BUTTON SET AUTOMATICS ONLYPROGRAMMING DOSIFICATIONS PREINFUSION PROGRAMMINGBREWING COFFEE EXTRACTIONOBSERVATIONS CLEANING CLEANINGTROUBLESHOOTING ProblemWARNINGS Probable causeDOSAGE PULSOMETER MALFUNCTION ALARM AUTOMATIC WATER LEVEL MALFUNCTION ALARMBOARD REPLACEMENT PUSH-BUTTON BOARD CONNECTIONSBUNN Espress ES2A/ES2SA REPLACEMENT PARTSBUNN EspressREPLACEMENT PARTS DescriptionREPLACEMENT PARTS ES2A/ES2SA BUNN EspressP-235 REPLACEMENT PARTS Solenoid rebuild kit 22811.0000Group assy.items 22711.0000REPLACEMENT PARTS Complete valve assy 22685.0000P-240 REPLACEMENT PARTS 22637.0000 Complete assyComplete valve assy.- items 22658.0000REPLACEMENT PARTS P-238 Water inlet hose supply to pump in P-237 REPLACEMENT PARTS 1 .................. Red push button on/off switch Replacement Parts Not Illustrated DescriptionSCHEMATIC ES2SAP-243 ES2A P-244