Table of Contents
Troubleshooting
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Summary of Contents for Marco MAXIBREW 2
- Page 1 MAXIBREW 2 TWIN BOILER-BREWER SERVICE MANUAL Ireland Tel: (01) 295 2674 Marco Beverage Systems Ltd. Ireland Fax: (01) 295 3715 63d Heather Road, Sandyford Industrial Estate, Dublin 18, UK Tel: (0207) 274 4577 Republic of Ireland UK Fax: (0207) 978 8141...
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Page 2: Table Of Contents
Operation – Heat Fill Mode 4.7. Operation – Continuous Fill Mode 4.8. Troubleshooting – Diagnostic guide 4.9. Level Probes 4.10. Elements 4.11. Descaling procedure 4.12. Coffee Aerator 4.13. Wiring Diagram 4.14. Spare Parts List Service Manual MAXIBREW 2 TWIN 25-03-08 Page 2 of 31... -
Page 3: Introduction
1. INTRODUCTION: The information provided in this manual is intended to assist in the installation and maintenance of the Marco Maxibrew 2 Twin Boiler Brewer. Please read the instructions carefully to prevent accidents and ensure an efficient installation. This manual is not a substitute for any safety instructions or technical data affixed to the machine or its packaging. -
Page 4: Safety Instructions
Allow to cool before removing components. The use of spares and accessories not recommended by Marco may cause damage and/or injuries. Do not use outdoors. Do not place on or near a hot gas or electric burner. - Page 5 PCB will flash a number of times – this indicates which version of software code is in the machine. Plumbing installation procedure: Note: Marco recommend that this machine be positioned on a counter with a drainage facility. Marco cannot be held responsible for any flood damages. Mains water pressure required (limits): 5-50psi (35-345kPa) ...
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Page 6: Operation
The Marco Maxibrew 2 Twin uses the ‘Heat fill cycle’ as standard to ensure that only beverages at the correct temperature are served. If more hot water is used than the machine can heat, it simply runs out of water. -
Page 7: Brewing Coffee
Put the correct amount of ground coffee into the filter paper. Your coffee supply company may have pack sizes to suit the brews of your new Maxibrew 2 Twin; if not, as an approximate guide for your first brews: 220g-240g (8-8½oz) for a Half Brew (10 pints [5.7 litres]) -
Page 8: Lock Function
COFFEE AERATOR: The Maxibrew 2 Twin has an air-operated agitation system to mix coffee after a brew or after the coffee has been left standing for a period of time. Press and hold the Coffee Aerator button (right hand side control panel) for approximately 10 seconds to mix the coffee in the urns. -
Page 9: Maintenance
Marco Urn Cleanser (Marco Part number 8000240) is available in 800g tubs. Instructions are given on each tub. Your Maxibrew 2 Twin is supplied with one large urn cleaning brush and one small sight-glass cleaning brush – to ensure thorough cleaning. To clean the sightglass, unscrew the small plastic plugs on the top of the sightglass. -
Page 10: Technical Data
4. Technical Data: 4.1. GENERAL DESCRIPTION: MAXIBREW 2 TWIN - 8.4kW 1000465 Electrical Connection 8.4kW,400V (3Phase+Neutral) c/w 1.5m flex Plumbing Fittings 0.75” BSP Pressure Food grade inlet hose supplied 5-50 psi (35-345 kPa) Dimensions Height 816mm Height incl. Cup Rail... -
Page 11: External Arrangement
(13 right). Slide the front panel down. Lever the top of the front panel away from the plastics. Lift the Front Panel away. All the internal components are now accessible. Service Manual MAXIBREW 2 TWIN 25-03-08 Page 11 of 31... -
Page 12: Internal Arrangement
PCB Daughter – (1600317) Tank Overflow Pipe Lamp Ballast – (1501211) Left Brew Pump – (1501540) Low Level and High Level Probe Assembly Elements - (1500975) PCB Brewer Display Right- 1600324 Service Manual MAXIBREW 2 TWIN 25-03-08 Page 12 of 31... -
Page 13: Pcbs
4. Technical Data: 4.5. PCBs: 4.5.1. PCB Layout: INTERNAL PCB LAYOUT: PCB Brew Board (Twin 2004) (Marco part no. 1600326) Controls the heater switching Switches one element only (daughter PCBs switch the other elements) Controls the water inlet switching ... -
Page 14: Pcb Brewer 2004 - 1600326
The default position is no jumper or jumper towards the transformer side. The default mode is HEAT-FILL. To change the mode to CONTINUOUS FILL move the jumper so that the two pins furthest away from the transformer are connected. Service Manual MAXIBREW 2 TWIN 25-03-08 Page 14 of 31... - Page 15 19. Live tab – spare (high voltage) 20. Suppressor 21. Relay – Inlet Solenoid Switches the inlet solenoid 22. Fuse 23. Neutral Mains tab (high voltage) 24. Neutral Mains tab – spare (high voltage) Service Manual MAXIBREW 2 TWIN 25-03-08 Page 15 of 31...
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Page 16: Pcb Dual Timer - 1600323
Connector for Left Display PCB – right ribbon cable Connector for Left Display PCB – middle ribbon cable Connector for Left Display PCB – left ribbon cable Connector for Air Pump Driver PCB Service Manual MAXIBREW 2 TWIN 25-03-08 Page 16 of 31... -
Page 17: Pcb Air Pump Driver - 1600319
NOTE: The ribbon cable used to connect the PCB Dual Timer to the PCB Air Pump Driver is wired differently to any other ribbon cable on the Maxibrew 2 Twin. The 4way connector is reversed on one end. This ribbon is identified by the black insulation strip. - Page 18 Service Manual MAXIBREW 2 TWIN 25-03-08 Page 18 of 31...
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Page 19: Pcb Brewer Display - 1600324
14. LED – Ready to Brew function 15. Button – Right Half Brew function 16. LED – Right Half Brew function 17. Button – Right Full Brew function 18. LED – Right Full Brew function Service Manual MAXIBREW 2 TWIN 25-03-08 Page 19 of 31... -
Page 20: Operation - Heat Fill Mode
The machine will effectively run out of hot water (no water will be available out of the hot water tap), but brews can still be selected. Service Manual MAXIBREW 2 TWIN 25-03-08 Page 20 of 31... -
Page 21: Operation - Continuous Fill Mode
– BUT - if a large amount of hot water is used at the same time, brew temperatures can be affected, because cold mains water replaces the hot water used immediately. Service Manual MAXIBREW 2 TWIN 25-03-08 Page 21 of 31... -
Page 22: Troubleshooting - Diagnostic Guide
4. Technical Data: 4.8. TROUBLESHOOTING – DIAGNOSTIC GUIDE: The Marco Maxibrew 2 Twin uses an electronic diagnostic system to help determine faults. If an error is detected a sequence of flashes is displayed through the POWER light –shown in the picture below. - Page 23 If after 1min30secs no water has come into the machine, the 6flash sequence is displayed again. This cycle is repeated. Service Manual MAXIBREW 2 TWIN 25-03-08 Page 23 of 31...
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Page 24: Level Probes
The level probes provide much of the control inputs into the PCB and are critical to the operation of the machine. The wiring to these should be checked regularly and the probes themselves should be cleaned whenever the machine is serviced. There are 3 level probes on the Maxibrew 2 Twin. Low Level Probe ... - Page 25 The brew level probe has a 190mm long tab. A brew can be selected and will complete safely when the water level has reached this probe. A brew cannot be selected below this level. Service Manual MAXIBREW 2 TWIN 25-03-08 Page 25 of 31...
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Page 26: Elements
(see below). The thermistor pocket is welded into the clean out door. When reassembling the clean out door/ element assembly ensure that the red silicon o-ring is not damaged and the tank is well sealed. Check this carefully while the machine is heating up. Service Manual MAXIBREW 2 TWIN 25-03-08 Page 26 of 31... -
Page 27: Descaling Procedure
The coffee aerator pump can be accessed by removing the cup rail and lid of the brewer. It is located at the back of the machine (see below). The air flow can be adjusted by rotating the knobs. Service Manual MAXIBREW 2 TWIN 25-03-08 Page 27 of 31... -
Page 28: Wiring Diagram
4. Technical Data: 4.13. Wiring Diagram’s Service Manual MAXIBREW 2 TWIN 25-03-08 Page 28 of 31... - Page 29 Service Manual MAXIBREW 2 TWIN 25-03-08 Page 29 of 31...
- Page 30 Service Manual MAXIBREW 2 TWIN 25-03-08 Page 30 of 31...
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Page 31: Spare Parts List
Plastic Rose (around Tap) 1801550 Plastic Fascia MB2T 2300075 Basket Complete MB2 2300350 Urn Lid Complete 2300185 Drip Tray Complete Maxibrew 2 Twin 8000240 Urn Cleanser (800g Tub) 1801515 Cup Rail Acrylic Service Manual MAXIBREW 2 TWIN 25-03-08 Page 31 of 31...
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