SERVICE MANUAL - Expert-CM
Contents
1. PUMP REMOVED FROM THE BOILER UNIT BY PASS CHECK VALVE Klixon Overheating protection WATER INLET NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 27 42 21 ESPRESSO amp FB BREWER UNITS The espresso version is equipped with the new Z3000 unit used in three specific versions refer to the specific Z3000 service manual In any case it is an evolution with many improvements of the model Z2000 more specifically planned for the following versions 1 Standard version which is equivalent to the old Z2000 but with a simpler structure 2 Variable chamber version which permits brewing with variable coffee doses 3 Larger chamber version which permits selections with more coffee compared to the maximum possible with the base unit A heating system has been designed for all versions for the purpose of increasing the temperature of the first coffee A specific brewer unit for filtered coffee SI GMA BREWER is used in the FB version For further details on the functional units refer to the specific H amp C functional unit manuals BREWER UNITS The Espresso brewer unit uses that2. Furthermore in the event of failure to the maximum level microswitch an overflow hole allows the water to be conveyed through a tube and to the safety device fitted on the water inlet solenoid valve thus causing Its mechanical lock Such safety device is triggered also in the event of a power failure Water supply tank for the Espresso version complete with softener filter and magnetic float Water supply tank for the Instant amp fresh Brewer version The water supply tanks are preset for the use of internal softener filters and are fitted with a magnetic level signal that trigger a sensor located inside the vending machine NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 24 42 19 1 BOILERS For the KORO model there are three base versions 1 Espresso version fitted with a pressure boiler very similar to the one used in the entire range 2 Instant version fitted with only the open top instant boiler also fitted with a new design level control system 3 Fresh brew version fitted with only the open top instant boiler used in the Instant version The espresso boiler is the same used for KIKKO models the
3. Especially in the first period of use 1000 2000 selections because of the greater wear due to the initial settling The adjustment can be performed also approximately by regularly checking the weight of the ground coffee and its grade of grinding The motor winding Is fitted with a self reset overheating protection Flat type grinding wheels are used For further information refer to the specific manual Side view without protective casing coffee grinder unit position area SENSOR SI DE DISTANCE TO f BE CHECKED Ground outlet exit port COFFEE GRI NDER PERSPECTIVE VIEW NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 33 42 26 POWDER AND LI QUID DOSE TABLES The software is programmed by default with the most suitable settings for the relevant market The following table is an example and are for the Italian market settings and the correct and updated settings are indicated in the tables supplied with the machine NOTE 1 The water flow in the mixers is approximately 10 c c per second and it is given as a guideline as there are many variables that can affect the accur
4. the brewing chamber is not clogged with too much coffee the filter is not clogged Check the connection with the FB board The display indicates the message FRESH BREWER BRUSH The default position is determined by the micro switches and the position is factory preset if for any reasons they are not triggered FRESH BREW coffee selections are disabled The standby position is checked by a position micro switch and every time the machine is Started the unit is checked check that the brush is new and the motor is activated That there are not any mechanical blockages Check the connection with the FB board NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 37 42 For espresso only Coffee is dispensed too slowly and it tastes burnt Excessive coffee dose or ground too finely The dose is calculated using an algorithm that counts the number revolutions of the grinder and the doses are dispensed correctly if the grinder is adjusted with the correct grade of grinding Check that the distance between the grinding wheels is the factory default one For espresso only Th
5. MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 10 42 5 ELECTRICAL SAFETY AND RELEVANT STANDARDS The vending machine New Dispenser was designed and made in conformity with the provisions of the following directives and related European standards MACHI NE SAFETY DIRECTIVE EEC 98 37 EN 60529 UNI EN 292 1 2 IEC 695 2 2 LOW VOLTAGE DIRECTIVE EEC 73 23 EEC 89 392 EEC 89 336 the low voltage directive covers all equipment powered with voltage below 400 V AC The following European standards are applied EN 60335 2 14 EN 60335 2 15 EN 60335 2 24 EN 60335 2 75 ELECTROMAGNETIC COMPATIBILITY DIRECTIVE EN 61000 3 3 EN 61000 4 2 EN 61000 4 3 EN 61000 4 4 EN 61000 4 5 EN 61000 4 11 With regard to Low Voltage and Electromagnetic Compatibility this vending machine was tested and certified by a certifying body authorised by ministerial decree IMQ It is therefore prohibited on pain of voiding the warranty and the responsibility of the certification to replace any electrical component with non original parts during the routine and extraordinary maintenance Operations Therefore it is also prohibited to Tamper with or deactivate the safety systems installed in the vending machine Install the
6. Sigma brewer control board M___ Actuation and control board SMI Push button and display ontra Decaf coffee door switch re eee NB The above listed codes are indicated in the wiring diagrams and on information sheets supplied with the machine NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 18 42 14 WIRING DIAGRAM les L iiig eA Ai Eji Hp Bag egg ie m gear ESPRESSO MODEL SM J J2 J2 J Ja J2 2 l 1 13 10 F230 Ne2a0Y NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 19 42 15 ACTUATION BOARD CONFIGURATIONS ACTUATION BOARD This board placed at the back of the machine see Fig 29 processes the information from the push button card and from the payment system it also controls the actuations the input signals and the boiler board The 15 VAC voltage n
7. and disconnects the power supply in order to reactivate everything the malfunction must be identified and the thermostat must be reset by pressing the central red button In the event of failure to the control system and the boiler full upon reaching boiling temperature as the steam exits from tube A it touches and triggers the two thermostats 2 Proceed as above to reset them see specific chapter to identify the type of malfunction See relevant section in the functional unit manual for details photos and complete description BOILERS The internal temperature control in both boilers is by means of an NTC type electronic probe fitted with an internal 12K ohm 4 ohm resistance at a temperature of 25 C Boiler temperature C Allowed tolerance ae O 35875 12000 pO 2900 Oo B UB nw O V h O y a do Bw NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 26 42 20 PUMPS AND BY PASS In order to supply water to the espresso boiler a vibration pump used which Is the same used in the entire H amp C range of Necta The application is specific as pump boiler TRIAC circuit and connections are positioned inside t
8. prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 15 42 11 INTERNAL LAYOUTS EXAMPLES OF INTERNAL LAYOUT NOTE THE FOLLOWING LAYOUTS ARE ONLY GIVEN AS AN EXAMPLE FOR THE PURPOSE OF INDICATING THE CONFIGURATION POSSIBILITIES REFER TO THE TABLES SUPPLIED WITH THE MACHINE FOR THE ACTUAL LAYOUT PANNELLO ELETTRICO Er GAFFE IN GRAHI D ADULT Layout Koro Espresso Layout Koro Fresh Brewer PANNELLO ELETTRICO FLFT TRICO Sa 7B Roe F Rpa T A Layout Koro I nstant NW Global Vending TECHNI CAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 16 42 12 ELECTRICAL SYSTEMS CONNECTIONS The machine Is designed to operate under a single phase voltage of 230 V AC 5 10V It is protected with a main 15 A fuse on both phases With regard to the transformer the primary winding is protected with a 125 mA fuse the secondary winding is protected with a 1 25 mA fuse It is fitted with a door opening safety switch The power cable can be supplied as standard feature and chosen among the following types 1 HO5 RN F copper with a 3 x 1 5 mm section 2 HO5SVV
9. relays K1 and K14 The display indicates the message VOLUMETRIC COUNTER When the counter does not signal any counting within a time out set by default The water amounts necessary for espresso coffee selections are ensured by a volumetric counter that with the water flow causes a wheel to rotate and sends to the software a number of pulses corresponding to the set water dose if such dose is not reached within 60 seconds it means that there is a problem Check that there is water see above check that there are no obstructions to the correct flow of water Check the correct functioning of the impellers There must be 5 VAC on the terminals during the counter operation Check that coffee was ground correctly and that dose is accurate Check that the coffee filters are not clogged NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 36 42 The display indicates the message BOILER The machine will lock if after the maximum time of heating from the machine start or from the last selection there is no signal of correctly reaching the temperature set in the software Check t
10. reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 11 42 7 HYDRAULIC LAYOUT ESPRESSO ESPRESSO VERSION COMPONENTS REF DESCRI PTI ON REF DESCRI PTI ON REF DESCRI PTI ON A E E e N B The diagram shown is given only as a reference as it may differ for each version NW Global Vending TECHNI CAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 12 42 3 HYDRAULIC LAYOUT INSTANT INSTANT VERSION COMPONENTS REF DESCRI PTI ON REF DESCRI PTI ON REF DESCRI PTI ON 1 Spouts assembly 2 Mixers 3 Solenoid valves 4 Boiler assembly 8 Water supply pump 6 Water supply tank N B The diagram shown is given only as a reference as it may differ for each version NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 pag
11. selections are disabled All instant product selections remain available When an espresso coffee selection is made the grinder is activated conveying coffee directly to the brewing chamber of the Z3000 unit and the amount is determined by the number of revolutions of the grinding wheels by means of a special sensor Check the presence of coffee Check the distance between the grinding wheels Check the presence of the sensor Check the functioning of the relay K16 The display indicates the message NASTE CONTAINER FULL When the float in the liquid waste tray triggers the signal micro switch Empty the tray removing it from the lower section of the cabinet Check the operation and correct functioning of float and micro switch The display indicates the message AI R BREAK The machine locks if after 10 selections the float micro switch does not change position Check the following situations Machine with air break check that there is water from the mains if this is the problem wait for the water from the mains to be resumed Otherwise check the operation of the inlet solenoid valve from the mains check the operation of the air break micro switch Machine with instant boiler in this case it is the boiler to perform the air break function Then repeat the above checks Machine with water supply tank Check the operation of the magnetic float and of the water supply pump Check the activation of
12. the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 35 42 28 TROUBLE SHOOTING PROBLEM and or indication on the display POSSI BLE CAUSE SOLUTION The machine does not go into the boiler heating phase and the display shows the message WATER FAI LURE If the micro switch of the air break if fitted float in the instant boiler or of the float in the water supply tank is not activate within one minute the software disables the machine Check the following situations Machine with air break check that there is water from the mains if this is the problem wait for the water from the mains to be resumed Otherwise check the operation of the inlet solenoid valve from the mains check the operation of the air break micro switch Machine with instant boiler in this case it is the boiler to perform the air break function Then repeat the above checks Machine with water supply tank Check the operation of the magnetic float and of the water supply pump Check the activation of relays K1 and K14 espresso versions The display indicates the message NO COFFEE If the coffee grinder exceeds the grinding speed for longer than 5 seconds the espresso coffee
13. the push button board 14 Connector for board programming RS232 15 Up Key connector 16 Board power supply 15Vac 17 Relays K1 to K16 18 Connector for 230 V AC power users lr HiT g Up m Dheresanrnan i ii it 4 os rs A Wain oF Ei HE5 r zA l ns OU MTITI i E i i 0 IU D R O GO OL i Pm i g QO Fal oFlelle TT SM1 REFERENCE TO RELAY CODE AND ACTUATI ONS ESPRESSO FB l T gt 1 l KA Starting pump PA K3 Whipper motor 1 Whipper motor 1 K5 _ Coffee dispensing solenoid valve Instant prod solenoid valve 3 Discharge solenoid valve 1 Fresh Brewer solenoid valve Discharge solenoid valve 2 Notused o K8 K9 K10 Doser device motor 1 K11 Instant prod solenoid valve K12 K13 K114 i K15 K16 Mains water inlet solenoid valve Mains water inlet solenoid valve Coffee grinder ratiomotor Instant prod solenoid valve 1 Instant prod solenoid valve 1 NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 21 42 16 SIGMA BREWER CONTROL BOARD This board located
14. vending machine outdoor or in any case in a place that is not protected from the weather Use the vending machine for purposes other than those indicated in the sales contract Connect the vending machine by means of extension cords or multiple sockets and or adapters Use water jets for cleaning Then it is also compulsory to Verify the conformity and suitability of power supply line and of the power outlet 6 REQUIREMENT FOR THE USERS For safety purposes three different operators with different qualifications have been defined USER The user is practically the final user who buys the products from the machine The user must not have any access whatsoever to the inside of the machine PERSON RESPONSI BLE FOR REFILLING AND ROUTINE CLEANING The person responsible for refilling has the key for opening the machine and is in charge of the refilling cleaning and internal hygiene of the machine He must not have any access to energised parts or moving parts MAINTENANCE TECHNI CI AN The maintenance technician must be a highly skilled person and must be aware of the electrical hazards in the event of complex technical operations and can operate with the machine switched on and the door open using the safety key supplied NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or
15. F 9 3 HO5SVV F 5 4 Fitted with a fixed SCHUKO plug NB it is possible that for some specific markets a cable with specific plug be fitted in accordance with the regulations in force in that country In the event of replacement cables of exactly the same characteristics must be used Since the KORO vending machine is approved by an electrical safety certification institute IMQ replacements with non original components are not permitted Otherwise the electrical safety certificate and the warranty will be void 13 CONNECTION OF ELECTRONIC BOARDS 1 Actuation board 2 Steam exhauster a NEk ime a 3 Terminal strip 4 Switch and fuses i I E 5 Boiler control board 6 Secondary winding fuses 7 Noise suppressor 8 Transformer View of power supply unit compartment and actuation board Espresso version without protective casing NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 17 42 BOARD CONNECTION DIAGRAM P46 SMFB P5 je ja q vO _ o MI1 e AO Dadu DESCRI PTI ON SAL Power supply card SM FB_
16. HACCP DIRECTIVE DAILY CLEANING AND HYGI ENE PROGRAM DAI LY CLEANING AND HYGI ENE PROGRAM FRESH BREWER UNIT MONTHLY CLEANING AND HYGI ENE PROGRAM NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag 32 33 34 35 36 38 40 41 42 page 2 42 1 PLANNED MODELS NSTANT VERSION OPEN AND CLOSED DOOR ESPRESSO VERSION OPEN AND CLOSED DOOR NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 3 42 Internal water supply tank p External water supply tank NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personne
17. IGMA BREWER unit from the machine clean thoroughly see specific manual more specifically the brewing chamber and the lowe filter check the efficiency of the mechanism and of the position micro switches FIG 1 If the filter is clogged for more than 50 must be replaced FIG 5 Remove the powder containers empty and clean FIG 4 them thoroughly in the inside especially the ports and the auger FIG 6 Remove the grinder and doser assembly empty any coffee residue check the state of the grinding wheels check the efficiency of the sensor that detects the number of revolutions FIG 7 Reset the correct distance between the grinding wheels See specific manual Reassemble all parts taking care not to touch any parts that come into contact with food NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 42 42
18. N amp W GLOBAL VENDING AFTER SALES SERVICE SERVICE MANUAL New Dispenser Koro This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 1 42 N WOON ADUAWNNNE 24 25 26 27 28 29 30 31 32 PLANNED MODELS MAIN EXTERNAL COMPONENTS MAIN INTERNAL COMPONENTS REAR COMPARTMENT WITHOUT PROTECTIVE CASING LIST OF MAIN COMPONENTS TECHNICAL DATA AND FEATURES ELECTRICAL SAFETY AND RELEVANT STANDARDS REQUIREMENT FOR THE USERS HYDRAULIC LAYOUT OF ESPRESSO VERSI ON HYDRAULIC LAYOUT OF INSTANT VERSI ON HYDRAULIC LAYOUT OF FRESH BREWER VERSION HYDRAULIC LAYOUT OF VARI ABLE CHAMBER ESPRESSO INTERNAL LAYOUTS ELECTRICAL SYSTEMS CONNECTIONS CONNECTION OF ELECTRONIC BOARDS WIRING DIAGRAMS ACTUATION BOARD CONFI GURATI ONS SI GMA BREWER CONTROL BOARD PUSH BUTTON BOARD BOI LER CONTROL BOARD Al R BREAK AND BOILERS INSTANT amp ESPRESSO PUMPS AND BYPASS ESPRESSO COFFEE FRESH BREWER UNIT amp SIGMA BREWER SPOUTS ASSEMBLY POWDER PRODUCT CONTAINER AND DOSER DEVICES ASSY MI XER UNIT COFFEE GRI NDER AND DOSER DEVI CE ASSEMBLY POWDER AND LI QUI D DOSE TABLES ROUTINE AND EXTRAORDINARY MAI NTENANCE PROGRAM TROUBLE SHOOTING
19. acy The liquid dose is determined by the flow meter pulse counting volumetric counter Both versions Instant and Espresso use an electromechanical vibration pump with the espresso boiler for the water flow therefore the liquid dose in both versions is measured in flow meter pulses fmp NOTE 2 To be noted that the number of pulses does not change in a linear manner i e double the amount of water does not correspond to double the number of pulses however the counter varies the accuracy according to the water flow velocity and namely For espresso coffee it is reduced considerably because of the coffee compress reaction that slows down the water flow while it is accelerated in the instant drinks selections since there are no obstructions to the water flow Therefore in the event of changing the doses set at the factory some measurements must be made using measuring containers NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 34 42 27 ROUTINE amp EXTRAORDI NARY MAI NTENANCE PROGRAM The vending machine KORO was designed to operate for a long time without malfunctions however in order to ensure excell
20. and whatis indicated by the European Directive Directives EEC 93 43 and 96 3 regard the hygiene of food products and are based on the HACCP Hazard Analysis Critical Control Point The purpose of this directive is to safeguard the consumer health suggesting a series of actions to be take by the vending company aimed at checking identifying and correcting any critical aspects in the foodstul chain from the purchase of products and machines to the dispensing of the product The HACCP is therefore a system that addresses the analysis of any potential risks in the manufacturing and distribution cycle of food product and the Identification of critical points where such risks can occur the system also highlights the actions to be undertaken and the decisions to be made with regard to such critical points as well as the implementation of checking and monitoring procedures Therefore each vending company must develop a Company Hygiene Self control Manual according to the provisions of the directive and if necessary use the information and recommendations formulated by some associations in the sector The manual must contain a programming and checking schedule for the vending machine hygiene condition mportant notes For a correct use of the machine the directives must be fully applied The operator is responsible for correct operations on a vending machine HACCP Directives EEC 93 43 and 96 3 Guidelines for comectapplication Ensure hyg
21. as necessary to design new solutions using quick fastening without any screws to allow easy access for maintenance as well as quick changes to the layout by means of preassembled modules Mi XER RATI OMOTOR ASSEMBLY BEI NG REMOVED FROM ITS SEAT I NSTANT PRODUCT CONTAINER OPEN AND BEING REMOVED Mi XER RATI OMOTOR ASSEMBLY VI EWED FROM BELOW RATI OMOTOR REMOVED FROM ITS SEAT Standards components are used already adopted in other applications but in a new support and with newly designed specific powder containers comprising also the mixer assembly The system is modular and of the same width as a powder container It was designed for quick and easy removal as required by the particular type of machine I NSTANT PRODUCT CONTAINER OPEN AND BEING REMOVED NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 31 42 24 MIXER UNIT TRAY UNDER THE MI XER BEI NG REMOVED MI XER IN EXTRACTI ON POSI TI ON DETAI L OF RELEASE LEVER PLASTI C COMPONENTS OF DISASSEMBLED MI XER Mi XER HAVI NG THE EXTERNAL PARTS THAT NEED DAI LY HYGI ENE BEI NG REMOVED The mixers are newly designed alth
22. at the back of the machine Is additional to the actuation board and controls the SIGMA BREWER unit function only for the FB version See photo without protective casing It processes the information from the brewer unit and controls its functions The board also controls the dispensing of fresh product and the flow diverter solenoid valve from spout external nozzle The 24 VAC voltage necessary for operating the board is Supplied by the transformer protected by a 800 mAT fuse on the primary winding and by a 3 15 AT fuse on the secondary winding the voltage is rectified and stabilised directly by the board The green LED 7 indicates the presence of 5 V The green LED 8 indicates the presence of 34 V DC variable The green LED 9 indicates the presence of 34 V DC wou AT 7 N E y Lag af ae a 3 F j E ail DETAIL OF REAR SECTION WITHOUT PROTECTIVE CASING gue Ai re maf tJ j om tie T See 1 To Sigma brewer unit mi EEI 2 Not used m 3 MDFB and EVDEV 4 Board power supply 24Vac p 5 Not used 6 Not used 7 Green LED 5V 8 Green LED 34Vdc variable H 9 Green LED 34 Vdc co AL oe Thi 10 Tray detection micro switch a s rn Pi 11 Tray detection micro switch or J ban nN i Ral pA ln Malah I los ak Rog 12 Can bus with actuation board 5 13 Can bus with actuation board _ a NW Global Vending TECHNICAL MANUAL This documen
23. d cleaning products approved for foodstuff preferably liquid avoid the use of powder and abrasive products NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 39 42 30 DAILY CLEANING AND HYGIENE PROGRAM Daily Cleaning And Hygiene espresso Version Expected time 6 minutes Remove the dispensing compartment and the tray Slide out the internal tank Clean and rinse the components thoroughly under current water empty and rinse the tank FIG 1 FIG 2 Remove the coffee grounds container empty it and rinse it thoroughly FIG 3 Remove the drip tray located under the mixer rinse Fia 2 Fig 1 it and eliminate any residue FIG 4 19 Slide out the external mixer assembly and disassemble it FIG 5 6 clean and rinse out thoroughly all residue Remove the brewer unit clean and rinse with hot water FIG 7 8 Reassemble all parts taking care not to touch with your hands any parts that come into contact with food Carry out a mixer automatic wash cycle according to the pre set procedures Close the door and make some test selections NB In order to speed up the operations it is adv
24. e 13 42 9 HYDRAULIC LAYOUT FRESH BREWER I Jo ran i a 4 f i COMPONENTI VERSI ONE FRESH BREWER DESCRI PTI ON REF DESCRI PTI ON REF DESCRI PTI ON Spouts assembly Sigma Brewer boiler Er lt a E a monas f s Beier e Wotersupniypune E EN N B The diagram shown is given only as a reference as it may differ for each version NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 14 42 10 HYDRAULIC LAYOUT VARI ABLE CHAMBER ESPRESSO DESCRI PTI ON DESCRI PTI ON Oa Spouts assembly Brewer unit 4 Chamber with piston Solenoid valve assembly Discharge solenoid valve 7 Bypass bar By pass 12 bar Piston solenoid valve 33 Vibrationpump PF This diagram is used exclusively for variable chamber brewer units as it differs also with regard to the electrical circuit and it is specific to some versions NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the
25. e coffee lacks body and is dispensed too quickly Coffee dose too small or ground too coarsely The dose is calculated using an algorithm that counts the number revolutions of the grinder and the doses are dispensed correctly if the grinder is adjusted with the correct grade of grinding The dispensing time must remain constant Check that the distance between the grinding wheels is the factory default one with use the grinding wheels are subject to wear and it will be necessary to reset the correct measurement periodically The mixers clog up Failed rotation of the mixer Excessive instant product dose Steam exhaust box clogged Water to powder ratio not correct Check for the motor overheat protection trigger if necessary check the cause of such trigger Empty the powder removal box adjust and check the correct water to powder ratio Check the logic of the cycles Check the activation of relay K3 NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 38 42 29 HACCP DIRECTIVE HACCP DI RECTI VE EEC 93 43 and 96 3 Outline and instructions for use Notes What its t
26. ecessary for operating the board is Supplied by the transformer protected by a 125 mAT fuse on the primary winding and by a 1 25 AT fuse on the secondary winding the voltage is rectified and stabilised directly by the board This board houses the Flash EPROM The control software of the board Is installed directly via RS232 in the microprocessor The red LED 7 indicates the operating status of the boiler heating element The red LED 9 for resetting the CPU glows during the board reset The green LED 11 blinking indicates that the microprocessor is working correctly The yellow LED 12 indicates the presence of 12 V DC NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 20 42 z rhin UITE Cif Jo0 i i EH Hi E al BE FTI wI Baal ia i TEJI nt imie tat TE j p pr EF iy ee oT eit 1 230 V power users 2 Input signal 3 Can Bus connection 4 Can Bus connection 5 Relay expansion connection 6 Boiler control probes 7 Red LED boiler heating element 8 Input signal 9 Red LED 10 Not used 11 Green LED 12 Yellow LED 13 To
27. ed by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 7 42 Side view without protective casing espresso boiler side Side view without protective casing open top boiler side FB Instant NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 8 42 3 LIST OF MAIN COMPONENTS N Ref DESCRI PTI ON to o O 2 Cabinet 3 Userinterface O OZ O O 4 Selectionkeypad O Z o O S O 5 Dispensingunit O OZO O O 6 Dispensing compartment O O O Z O Z o O 8 Gridfusess 0 9 Mainswith gt gt gt O 10 Water inlet solenoid valve O O O Z OoOO OO 11 Power supply cable S O 12 Grinder doser device o O OZ O Z OO 13 Instant product container Z OZO S 14 Mixes __ i O Door S O 16 Coffee beans door gt S o o 18 Decaf c
28. ent reliability periodic maintenance Is necessary Such maintenance must be performed according to the number of selections made and the time lapsed Periodic and correct maintenance ensures reliability constant quality and also guarantees safety standards over time The following table indicates the functional units that must be subjected to periodic maintenance and the frequency of maintenance For the operations to be carried out refer to the specific Functional unit manuals DESCRI PTION OF OPERATION N of Max selections frequency Espresso brewer 1 Check state of filters and wear of silicone O ring seal 1 month unit 2 Replace upper and lower filters and related seals 6 months 3 Descale the internal vent hole and lubricate with specific food safe grease annual Fresh brewer unit 1 Check state of filters and wear of silicone O ring seal see details in the functional unit manual for FB coffee brewing 1 month 2 Open the unit and check the state of wear and internal annual lubrication and if necessary replace and lubricate 40 000 1 Check the water tightness in the axial bush and the correct assembly if necessary replace 2 Check the wear of the motor brushes and clean off the annual excess of carbon powder Boiler and If the boilers and the solenoid valves operate with soft water According to Every 6 solenoid valve or are fitted with specific softener filters the should be no the water months assembly need of per
29. hat the heating element and the STRC card are functioning correctly Check that the overheating control systems were not triggered Check the functioning of the probe control Should the overheating protection be triggered before resetting the cause must be found and eliminated ohm The display indicates the message CAN BUS BOARD Failed dialogue between CPU board and can bus board that controls the SIGMA BREWER unit Check the connections Check that the power supply is correct Replace the board The display indicates the message COIN MECHANISM only if equipped with a payment system The machine will lock if it receives an impulse longer than two seconds on a validator line or there is no communication with the serial coin mechanism for more than 30 seconds executive protocol Or 75 seconds BDV protocol Check that connection is correct and the software setting is correct for the protocol If necessary replace the payment system The display indicates the message GRINDER BLOCKED If the coffee grinder does not rotate or rotates too slowly for longer than 5 seconds the espresso coffee based selections are disabled The grinder rotation is controlled by a sensor if no rotation is detected within 5 seconds check That there are no blockages in the grinding wheels That the overheating control systems on the winding were not triggered That the sensor works correctly C
30. he espresso module and easily accessible after opening the compartment wall closed by only two screws and a quick snap fastener see Page 16 This solution ensures maximum access for maintenance and hygiene it also allows the option of using configurations with two espresso modules as an alternative to other two modules and even mixed modules espresso instant fresh brew The pump has overheating protection in case of continuous or dry operation by means of a 90 C self reset klixon It is fitted with a by pass at the outlet to ensure correct and consistent dispensing pressure The by pass is factory pre set at 12 bar The pump Is activated by relay K 8 see previous page for the pictures The pump is located in the espresso boiler unit In the event of malfunctions the pump can be replaced with a new one In order to access to it the brewer unit must be removed Fig 1 Therefore the boiler unit protective casing must be opened Fig 2 undoing the two fastening screws The PUMP is located on the left hand side and is mounted on two rubber anti vibration elastic supports Disconnect the connection cables and remove after undoing the special screws NEVER change the setting of the bypass especially adjusted at the factory if the malfunction is due to clogging from calcium deposits replace with the complete check valve spare part set If the malfunction was due to triggering of the klixon replace it with an identical one
31. heck the activation of relay K16 The display indicates the message ESPRESSO UNIT If the unit does not reach the initial standby position after making a selection checked by a position micro switch the espresso based selections are disabled The standby position is checked by a position micro switch and every time the machine is started the unit is checked If the change in the on condition is not read check that the motor is started the position micro switch works correctly the brewing chamber is not clogged with too much coffee Check the activation of relay K7 The display indicates the message RAM DATA One or more areas of the RAM memory contain altered or non compatible data which is corrected by the software with default setting data therefore the machine continues to operate with the initial data but initialise will be required Enter into the installation procedure and initialise the software if the failure persists replace the CPU board The display indicates the message FRESH BREWER PISTON The default position is determined by the micro switches and the position is factory preset if for any reasons they are not triggered FRESH BREW coffee selections are disabled The standby position is checked by a position micro switch and every time the machine is started the unit is checked check that the motor is started the position micro switch works correctly
32. iene control with a special manual for correct hygiene practices After cleaning do not touch the surface of any elements that may come into contact with food Wash your hands thoroughly preferably using disinfectant before starting any hygiene operations Use disposable sterile gloves Always use a Clean cloth to wipe dry Keep the work area tidy Check that the product packages are intact and not damaged Keep coffee and powder products in a cool dark and dry place Use products within the recommended time period see expiry date on the package Always use products from the warehouse according to the principle of first in first out Tightly close and seal any product packages not completely used Coffee and consumables must be kept and transported separate from the cleaning products The product containers must be cleaned regularly see operation instructions Only fill coffee or other product containers with sufficient amount for the expected use until the next cleaning Cleaning the machine Pages 40 41 amp 42 Carefully observe the following cleaning instructions Clean the machine preferably at the end of the day or in the morning before the machine is used After cleaning dispense and check a drink see last check Fill in the check list log for cleaning operations When the display indicates an error message immediately check the trouble shooting sheet Use only recommende
33. iodic maintenance otherwise periodically check hardness the grade of scaling and if necessary proceed to complete descaling Steam exhauster There is not need of any particular maintenance Every day unit For perfect functioning it is necessary that the powder removal boxes be emptied periodically In addition daily cleaning ensures also maximum hygiene of the machine Coffee grinder The motor was designed to operate for more than 200000 Every year assembly grinding cycles and the grinding wheels can ensure correct grinding for at least 50000 cycles However these values can vary because of possible impurities in the coffee pebbles pieces of hard wood etc therefore it is advisable except for premature wear to check and if necessary replace the grinding wheels every 50000 cycles Every 200000 cycles check the state of wear of the 200000 ratiomotor brushes if necessary replace and clean off the Wear residues 4000 In addition every month check the correct positioning of the grinding wheels and if necessary adjust to the correct setting by means of the knurled knob Extraordinary maintenance is carried out in the event of possible malfunctions For the most typical problems the vending machine is fitted with sensors that inform the software about any malfunction The following tables list the possible malfunctions and possible remedies NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for
34. is ground on the spot by the grinder and doser unit specifically designed for this model and that also uses a particular method of metering the ground coffee dose The FB unit uses specific coffee already ground to an optimum grade for quick and adequate brewing DETAIL OF BASE Z3000 UNIT BEING REMOVED Heating plate functioning by contact with the brewing chamber In order to remove the unit from the vending machine undo the brass knurled knob disconnect the unit s hydraulic connections undoing the upper tube fastening nut and release the dispensing tube When removing the unit make sure it positioned at the upper dead centre Fig 1 To reposition tt follow the same procedure in the reverse order again making sure it positioned at the upper dead centre carefully inserting it onto the special positioning pins NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 28 42 DETAIL OF SIGMA BREWER UNIT BEING REMOVED DETAIL OF BREWING CHAMBER DETAIL OF LOWER FILTER BEING BEI NG REMOVED REMOVED BREWING CHAMBER AND FILTER COMPLETELY DISASSEMBLED The SIGMA BREWER is a new unit especially designed for the ve
35. isable to replace with components that were already cleaned and sanitised at the workshop and take to the workshop the dirty components for cleaning and sanitising The cleaning and hygiene operations must be carried out the evening after the machine use or the next morning before starting to use the machine NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 40 42 31 DAILY CLEANING AND HYGIENE PROGRAM FRESH BREWER UNIT Daily Cleaning And Hygiene Fresh brewer Version Expected time 6 minutes Remove the dispensing compartment and the tray slide out the external tank Clean and rinse the components thoroughly under current water empty and rinse the tank FIG 1 Remove the coffee grounds container empty it and rinse it thoroughly FIG 2 Fig 2 Remove the brewing chamber and disassemble it clean and rinse under hot current water FIG 3 5 Remove the lower filter holder clean and rinse thoroughly FIG 4 Remove the spouts assembly and the support tray clean and rinse thoroughly FIG 7 Slide out the external mixer assembly and disassemble it FIG 6 clean and rinse out thoro
36. l in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 4 42 2 MAIN EXTERNAL COMPONENTS NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 5 42 2 1 MAIN INTERNAL COMPONENTS Espresso Version Fresh Brewer Version NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 6 42 2 2 REAR COMPARTMENT WITHOUT PROTECTIVE CASING F Be B eu a e Pls cE jae i see Kianna p ey Ue i pi rini p ini rety E a j d PaE a i L TEI i Amat raea EE L es Detail of machine board FRESH BREWER version only NW Global Vending TECHNICAL MANUAL This document was produc
37. nding machine Koro FB version It is a highly innovative and advanced unit that allows disassembly of parts to be cleaned in a few instants Furthermore it uses a system with air pressure for brewing such system permits greater extraction of the coffee flavourings 3 i SI GMA BREWER UNIT REMOVED FROM THE VENDI NG MACHI NE NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 29 42 22 SPOUTS ASSEMBLY Because of the size of the vending machine FIXED SPOUTS have been designed The spouts are mounted onto a tray that is easy to remove for daily cleaning EXTERNAL VIEW OF SPOUTS ASSEMBLY DETAIL OF SUPPORT TRAY BEI NG REMOVED NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 30 42 23 DOSER DEVICES AND POWDER PRODUCT CONTAINERS In According to new market requirements it w
38. offee door powder o gt Z oZ o O ooo o 19 Water supply tank espresso o oO oOo 20 Driptray gt _ gt 21 Solid waste container O O gt Z oO o 22 Brewer unit Z3000 gt _ gt gt gt S O _ 23 Coffee container for FB powder o o o Y 24 Instant product container OZO oS o 25 Dispensing compartment 26 Hot water nozzle gt Z gt o 28 Mixers gt _ gt 29 Protective casing 9 O Z S O 30 Actuation board gt O 31 Steam exhauster gt Z gt O 32 Boiler heating element actuation board 33 Gridfuses S O 34 Mainswitth gt S O 35 Sigma Brewer control board FB version only 36 Transformer fuses gt Z gt O OO 38 Grid noise suppressor _ O OZ oOo 39 Power supply cable clamp O Z oO o 40 Coffee grinder unit gt Z gt O 41 Espresso boiler compartment o Z o Z o 42 Espresso boiler Z gt O 43 Electromagnetic pump o gt Z o O S O 44 Open top boiler Instant amp Fresh brewer NW Global Vending TECHNI CAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All righ
39. ough many components are developed from the ones used in previous models More specifically the release and opening system of the external assembly is new while the motor and the water tightness system are identical The new system permits easier disassembly for daily cleaning For further details and technical information refer to the specific Service Manual NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 32 42 25 DOSER GRI NDER UNIT The coffee grinder is a new design and the ground coffee dose is determined via software setting and by means of a sensor that counts the number of revolutions of the grinding wheels see view below Therefore it is very important that the mechanical adjustments to the grade of grinding be checked very frequently In order to get a dose of 7 grams of coffee a certain number of revolutions is counted by increasing or decreasing such value the amount increases or decreases It is therefore possible to set selections with different coffee doses It is therefore clear that it is very important to keep the adjustment of the grinding wheels constant to obtain accurate coffee doses
40. refore with the same well known and established characteristics and reliability The open top boiler for the Instant FB version is a new and specific design with the feature of being molded from thermoplastic material with specific technical characteristics PRESSURE BOILERS Solenoid valve assembly Three 2 way valves one 3 way valve Bipolar safety thermostat Pressure boiler Side view without protective casing pressure boiler inspection side Pressure boiler removed from the machine NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 25 42 OPEN TOP BOI LER IDE VIEW WITHOUT PROTECTIVE CASING OPEN TOP BOI LER OPEN TOP BOILER COMPARTMENT A 1 S OPEN TOP BOILER DETAIL OF SOLENOI D VALVES AND OVERHEATI NG PROTECTI ONS NOTE The open top is made of special thermoplastic material and coated with insulating material for more efficient heat insulation two overheating protections are fitted for safety 1 Dry operation protection 2 Anti boiling protection In the event of failure to the control system and boiler without water thermostat 1 is triggered at approximately 125 C
41. t the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 23 42 19 AIR BREAK amp BOILERS In the currently coded versions the use of an air break is not planned in the instant and fresh brewer versions the open top boiler is used which is equipped with a level control system and therefore the relevant functions are incorporated in the boiler See next paragraph In the espresso versions an internal water supply tank is used having the functions of the air break There will be in any case some versions with water supply from the mains where an air break will be fitted therefore the proper documentation will be supplied later The air break is a functional unit that has the function of keeping the water level constant and to have signal indicating the lack of water from the mains and in such event it allows the completion of the current selection Furthermore in the espresso version it serves the purpose of have a water reserve at atmospheric pressure so that the pump can draw the water dose needed for the selection and send it to the espresso boiler without pressure changes that may affect the volumetric counter reading The water level is ensured by a float that triggers a microswitch keeping the level between a factory set minimum and maximum it very important not to replace the microswitch with any one of different mechanical characteristics as a variety of malfunctions may occur
42. t was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 22 42 17 PUSH BUTTON BOARD 1 Selection buttons 2 Not used 3 To mechanical counter optional 23 99 99 a2 Ce a2 4 To actuation CPU board 5 Input ran j y yh 6 Display adjustment trimmer 5 C iz 7 To display oO TE il we J i Dit me DEE WATA 8 12 Vdc validators m Opt pereng cS 2n er P ie 9 Not used Sa f Ig P ae gt 10 RS232 serial port 11 Not used 12 Programming access button 13 Wash button 14 Display card 18 BOI LER CONTROL BOARD Triac board This board is controlled by the machine board and is powered under 230 V AC It used for controlling and starting the boiler heating element Connector J 2 is connected to a 230V AC phase Connector J1 receives the information from the SM board that sends a consent signal to activate the triac for the power supply to the heating element NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely withou
43. ts reserved New dispenser KORO 07 10 2005 page 9 42 4 TECHNICAL DATA AND FEATURES Height 500 mm Width 508 mm Depth 528 mm Overall depth with door open 724 mm Weight 28 Kg Ena Power supply voltage 230 V AC 50 Hz Installed power 1500 W espresso 2400 W FB I Payment systems used The machine is pre set to use by means of specific kits payment systems coin mechanisms and 24 V DC validators with protocols EXECUTIVE BDV MDB 528 Water supply From the mains with a water pressure of 5 to 85 N cm BASE VERSI ONS Espresso Instant Fresh brewer INSTALLED BOI LERS AND TEMPERATURE One pressure boiler for the espresso version One open top boiler for instant and Fresh brew versions Temperature setting via software SAFETY DEVI CES Main switch at the back Main switch upon opening the door Water inlet solenoid valve with overflow device Manual reset boiler safety thermostat Manual reset instant boiler anti boiling thermostat Air break float block Presence of liquid waste tray Presence of coffee grounds tray Boiler sensor control short circuit or failure Double heating and timing protection for Pump Doser devices Coffee unit ratiomotor Coffee grinder Mixer motors Fuse protection for Transformers electronic boards and main wiring CONTROLS Presence of water Presence of coffee Operating temperature reached NW Global Vending TECHNI CAL MANUAL This document was produced by
44. ughly all residue Reassemble all parts taking care not to touch with your hands any parts that come into contact with food Carry out a mixer automatic wash cycle according to the pre set procedures Close the door and make some test selections NW Global Vending TECHNICAL MANUAL This document was produced by MARK AC for the exclusive use of the technical personnel in the after sales service No part of this document may be divulged to a third party or reproduced partially or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 41 42 32 MONTHLY CLEANING AND HYGIENE PROGRAM Monthly Cleaning And Hygiene or every 5000 selections For all versions Espresso Fresh Brewer Instant Expected time 18 minutes ONCE A MONTH OR EVERY 5000 SELECTIONS THE FOLLOWING SCHEDULED MAINTENANCE OPERATIONS MUST BE CARRIED OUT AS USUAL IT IS ADVISABLE TO CARRY OUT SUCH OPERATIONS AT THE WORKSHOP AND ON SITE SIMPLY REPLACE THE UNITS WITH THE ONES WHICH WERE ALREADY SUBJECTED TO SCHEDULED MAINTENANCE Remove the Z3000 unit from the vending machine FIG 1 FIG 2 disassemble the unit completely remove the upper piston and the lower brewing chamber FIG 3 FIG 4 carry out the maintenance operations indicated in the specific FIG 2 manual and more specifically clean or replace the filters and lubricate the seals Remove the S
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