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.
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.
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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) ...
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.
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])
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.
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.
(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...
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 ...
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...
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...
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.
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Service Manual MAXIBREW 2 TWIN 25-03-08 Page 18 of 31...
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...
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...
– 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...
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.
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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...
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 ...
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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...
(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...
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...
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