11© by NECTA VENDING SOLUTIONS SpA 09-2003 228 00With the coffee waste tray removed, the machine is stillavailable for instant drink selections but indicating themessage “Insert waste tray” on the display.The selection counters are reset with the door closed,doing as follows:- press button 8 for 2 secondsThe display will show the request to enter the pass-word;- press in a quick succession buttons 4231 to reset thecounters.WEEKLY CLEANING OF THE COFFEE UNITEvery time coffee is refilled, or at least once a week, anypowder residue should be removed from the external partsof the coffee unit, particularly from the coffee funnel area(see Fig. 15).SUSPENDING FROM USEIf for any reason the machine is switched off for a periodexceeding the use-by date of the products, the followingwill be necessary:- completely empty the containers and thoroughly washthem with the chlorine-based detergents used toclean the mixers;- completely empty the coffee doser unit by dispensingcoffee until the empty condition is indicated.- completely empty the water system.INSTALLING THE PAYMENT SYSTEMThe machine is sold without payment system, there-fore the installer of such a system is responsible forany damage to the machine or to things and personscaused by faulty installation.The machine is electrically pre-set for the installationof MDB payment systems, and namely:- coin acceptor or “validator”- change-giver coin mechanisms or “changer”- bill accepter or “bill validator”- key / magnetic card reader or “cashless”that can be used in various combinations.Compatibility for housing the payment systems mustbe ascertained by and under the sole responsibility ofthe installer.When switched on, the machine goes through a controlroutine to determine which payment systems are actuallyinstalled and therefore configure the correct system.