Necta Koro Service Manual Download Page 32 | Manualshive

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Necta Koro Service Manual Download Page 32

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

24 – MIXER UNIT

The mixers are newly designed, although 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”.

T

RAY UNDER THE MIXER BEING REMOVED

MIXER IN EXTRACTION POSITION:

DETAIL OF RELEASE LEVER

P

LASTIC COMPONENTS OF DISASSEMBLED MIXER

M

IXER HAVING THE EXTERNAL PARTS THAT NEED

DAILY HYGIENE BEING REMOVED

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Summary of Contents for Koro

Page 1: ...les 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...

Page 2: ...LAYOUT OF FRESH BREWER VERSION HYDRAULIC LAYOUT OF VARIABLE CHAMBER ESPRESSO INTERNAL LAYOUTS ELECTRICAL SYSTEMS CONNECTIONS CONNECTION OF ELECTRONIC BOARDS WIRING DIAGRAMS ACTUATION BOARD CONFIGURAT...

Page 3: ...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 dispe...

Page 4: ...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 dispens...

Page 5: ...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 right...

Page 6: ...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 1 6 2 8 4 Fustino fo...

Page 7: ...ent 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 VISTA CON PORTA A...

Page 8: ...ument 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 Perspective vie...

Page 9: ...ply cable 12 Grinder doser device 13 Instant product container 14 Mixers 15 Door 16 Coffee beans door 17 Coffee beans hopper 18 Decaf coffee door powder 19 Water supply tank espresso 20 Drip tray 21 S...

Page 10: ...E BDV MDB Water supply From the mains with a water pressure of 5 to 85 N cm2 BASE VERSIONS Espresso Instant Fresh brewer INSTALLED BOILERS AND TEMPERATURE One pressure boiler for the espresso version...

Page 11: ...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 i...

Page 12: ...the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 12 42 7 HYDRAULIC LAYOUT ESPRESSO ESPRESSO VERSION COMPONENTS N B The diagram shown is given only as a...

Page 13: ...ly or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 13 42 INSTANT VERSION COMPONENTS N B The diagram shown is given only as a refere...

Page 14: ...without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 14 42 9 HYDRAULIC LAYOUT FRESH BREWER COMPONENTI VERSIONE FRESH BREWER N B The diagram shown i...

Page 15: ...VARIABLE CHAMBER ESPRESSO COMPONENTS OF ESPRESSO VERSION WITH VARIABLE BREWING CHAMBER This diagram is used exclusively for variable chamber brewer units as it differs also with regard to the electri...

Page 16: ...ly or entirely without the prior permission of NW GLOBAL VENDING All rights reserved New dispenser KORO 07 10 2005 page 16 42 11 INTERNAL LAYOUTS EXAMPLES OF INTERNAL LAYOUT NOTE THE FOLLOWING I LAYOU...

Page 17: ...as standard feature and chosen among the following types 1 HO5 RN F copper with a 3 x 1 5 mm2 section 2 HO5 V V F 3 HO5 V V F Fitted with a fixed SCHUKO plug NB it is possible that for some specific...

Page 18: ...ights reserved New dispenser KORO 07 10 2005 page 18 42 BOARD CONNECTION DIAGRAM Signal DESCRIPTION SAL Power supply card SM FB Sigma brewer control board SM Actuation and control board CCG Mechanical...

Page 19: ...echnical 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...

Page 20: ...controls the actuations the input signals and the boiler board The 15 VAC voltage necessary for operating the board is supplied by the transformer protected by a 125 mAT fuse on the primary winding a...

Page 21: ...esh Brewer solenoid valve K 7 Coffee brewer motor Not used K 8 Discharge solenoid valve 2 Not used K 9 Instant prod solenoid valve 1 Instant prod solenoid valve 1 K 10 Doser device motor 1 Doser devic...

Page 22: ...s 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...

Page 23: ...t used 3 To mechanical counter optional 4 To actuation CPU board 5 Input 6 Display adjustment trimmer 7 To display 8 12 Vdc validators 9 Not used 10 RS232 serial port 11 Not used 12 Programming access...

Page 24: ...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 th...

Page 25: ...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 i...

Page 26: ...lure to the control system and boiler without water thermostat 1 is triggered at approximately 125 C and disconnects the power supply in order to reactivate everything the malfunction must be identifi...

Page 27: ...sh 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 dispe...

Page 28: ...sions for the purpose of increasing the temperature of the first coffee A specific brewer unit for filtered coffee SIGMA BREWER is used in the FB version For further details on the functional units re...

Page 29: ...9 42 DETAIL OF SIGMA BREWER UNIT BEING REMOVED DETAIL OF BREWING CHAMBER BEING REMOVED DETAIL OF LOWER FILTER BEING REMOVED SIGMA BREWER UNIT REMOVED FROM THE VENDING MACHINE BREWING CHAMBER AND FILTE...

Page 30: ...ird 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 22 SPOUTS ASSEMBLY Because of the size of t...

Page 31: ...s for maintenance as well as quick changes to the layout by means of preassembled modules 23 DOSER DEVICES AND POWDER PRODUCT CONTAINERS Standards components are used already adopted in other applicat...

Page 32: ...re newly designed although 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...

Page 33: ...creasing 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 a...

Page 34: ...iven as a guideline as there are many variables that can affect the accuracy The liquid dose is determined by the flow meter pulse counting volumetric counter Both versions Instant and Espresso use an...

Page 35: ...ghtness in the axial bush and the correct assembly if necessary replace 2 Check the wear of the motor brushes and clean off the excess of carbon powder 50 000 annual Boiler and solenoid valve assembly...

Page 36: ...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...

Page 37: ...ating control systems on the winding were not triggered That the sensor works correctly Check the activation of relay K16 The display indicates the message ESPRESSO UNIT If the unit does not reach the...

Page 38: ...ult one For espresso only The 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 o...

Page 39: ...ing schedule for the vending machine hygiene condition Important notes For a correct use of the machine the directives must be fully applied The operator is responsible for correct operations on a ven...

Page 40: ...ed under the mixer rinse it and eliminate any residue FIG 4 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...

Page 41: ...and rinse the tank FIG 1 Remove the coffee grounds container empty it and rinse it thoroughly FIG 2 Remove the brewing chamber and disassemble it clean and rinse under hot current water FIG 3 5 Remov...

Page 42: ...pletely remove the upper piston and the lower brewing chamber FIG 3 FIG 4 carry out the maintenance operations indicated in the specific manual and more specifically clean or replace the filters and l...

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