Marco Ecoboiler T20 Service Manual Download Page 3

T20-T30 Servuce Manual 11/07/2014 

 

 

Page 3 of 18 

 

1. INTRODUCTION: 

 

The information provided in this manual is intended to assist in the installation and maintenance of 
the Marco Ecoboiler Water boiler. 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. All information in this manual is current at the time of publication and is subject to 
change without notice. 
 
Only technicians or service providers authorised by Marco should carry out installation and 
maintenance of these machines.  
 
Marco accepts no responsibility for any damage or injury caused by incorrect or unreasonable 
installation and operation. 
 
 

2. SAFETY INSTRUCTIONS: 

 

 

 

Read all instructions. 

 
 

 

To protect against electric shock do not immerse mains cord in water or other liquid. 

 
 

 

To prevent chafing of the cable, do not let the mains cord hang over the edge of a table or 
counter ; or touch hot surfaces. 

 
 

 

Do not operate any appliance with a damaged cord, plugs, or after the appliance malfunctions 
or has been damaged in any manner. 

 
 

 

Switch off at the mains (unplug or disconnect from outlet) and turn off the water supply when 
not in use and before cleaning. 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. 

 
 

 

Do not use the appliance for anything other than its intended use. 

 
 

 

Save these instructions. 

 
 

 

Summary of Contents for Ecoboiler T20

Page 1: ...0 T30 SERVICE MANUAL Marco Beverage Systems Ltd 63d Heather Road Sandyford Industrial Estate Dublin 18 Republic of Ireland Ireland Tel 01 295 2674 Ireland Fax 01 295 3715 UK Tel 0207 274 4577 UK Fax 0...

Page 2: ...4 TECHNICAL DATA 7 4 1 General Description 7 4 2 External Arrangement 7 4 3 Access to internal components 8 4 4 Internal Arrangement 10 4 5 PCBs 10 4 5 1 PCB Layout 11 4 5 2 PCB Ecoboiler Control 160...

Page 3: ...any damage or injury caused by incorrect or unreasonable installation and operation 2 SAFETY INSTRUCTIONS Read all instructions To protect against electric shock do not immerse mains cord in water or...

Page 4: ...w several gallons through Connect right angled tailpiece of the hose to the inlet valve of the boiler again 3 4 BSP Make sure the sealing washer is fitted here also Turn on water and check for leaks 3...

Page 5: ...ements Normal when machine first fills Check water pressure if this is OK then call service agent 3 Temperature sensor failure o c Call service agent 4 Water not heating Call service agent 5 Temperatu...

Page 6: ...imescale are not covered by warranty Fitting a scale reducer is recommended especially in hard water areas This can reduce the build up of scale but may not stop it altogether The frequency that desca...

Page 7: ...ip Tray mm 690 240 395 518 568 690 240 395 518 568 690 300 395 518 568 Performance Immediate Draw Off litres Max Hourly Output litres hour 20 28 20 56 30 56 Electrical Connection 2 8kW 230V c w 1 5m f...

Page 8: ...ted on the picture and lever apart the front panels from the surround To remove the Front Fascia Top panel after separating the ball stud from the spring clip rotate the top edge of the panel forward...

Page 9: ...by unscrewing the four cross recessed pan headed screws On Tap versions the Tap assembly will need to be removed before the plastic Front Fascia Middle can be removed The Tank can be drained by remov...

Page 10: ...Internal PCB Layout PCB Ecoboiler Control 1600345 Controls the heater switching Controls the water inlet switching Controls tank temperature temperature adjustment PCB Ecoboiler Display 10L 1600349 co...

Page 11: ...tor 10 Earth Tab 11 Daughter PCB Connector low voltage Connects to Daughter PCBs allows switching of more than one element 12 External Connector 13 Thermistor Connector 14 Dip Switch 3 way Allows sele...

Page 12: ...Power On LED s shows that machine is switched on 2 Power On Off switch 3 Status LED s displays error signals via a flashing Red LED 4 Eco Mode On LED s 5 Eco Mode On Of Switch 6 5 way connector to PC...

Page 13: ...that the stop valve is open 2 Check that the inlet solenoid is working 3 If the water level is above the level of the low probe check the probe circuit wiring 3 FLASH CYCLE THERMISTOR OPEN CIRCUIT Di...

Page 14: ...d valve is switched on This is a non recoverable error This checks that the water in the tank is cooled by when the inlet solenoid valve is opened If the water pressure is within the specifications 5...

Page 15: ...d There are 3 level probes on the T20 and T30 Ecoboiler versions The Ecoboiler T20 T30 tank is shown below only the low level probe is visible in the picture 4 8 Descaling Procedure To descale the mac...

Page 16: ...T20 T30 Servuce Manual 11 07 2014 Page 16 of 18 4 9 Wiring Diagram 1000662 Ecoboiler T20 3...

Page 17: ...T20 T30 Servuce Manual 11 07 2014 Page 17 of 18 4 10 Wiring Diagrams 1000663 Ecoboiler T20 6 and T30...

Page 18: ...ap X X X 1502190 Valve Inlet Solenoid X X X 1500985 Element 2 8kW 230V X X X 1600691 Thermistor Assembly X X X 2300463 Level Probe Assembly X X X 2300192 Drip Tray Complete Ecoboiler T20 X X 2300274 D...

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