Ecoboiler SERVICE MANUAL Marco Beverage Systems Ltd.
CONTENTS: PAGE 1. INTRODUCTION 3 2. SAFETY INSTRUCTIONS 4 3.
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.
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.
3. BASIC INSTRUCTIONS: 3.1. INSTALLATION DETAILS: Electrical installation: • ECO Boiler PB5, PB10, T5, T10 (2.8kW) - A moulded 13A plug is factory fitted. A suitable 13A outlet is all that is required. 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.
Power Button Ready/Status Indicator Ecomode Button 5L Display 10L Display Figure 1: Machine User Interface NOTE: Because the boiler is electronically controlled no priming is necessary. The element cannot switch on until a safe level of water is reached. 3.3. TEMPERATURE CALIBRATION The Ecoboiler control PCB (1600345) has the ability to have the desired set-point temperature at whatever setting is required. During manufacture of the PCB it is set to the default temperature of around 80oC.
3.4. TIME/VOLUME DISPENSE CALIBRAT ION 1. 2. 3. 4. Open the front - bottom panel. Make sure that the machine is powered, filled and heated (ready lamp green). Press calibration tactile button on the PCB for a second until status lamp starts blinking red-green. Set new dispense time by pressing dispense button to obtain the required output volume of water. Button may be pressed several times – all times / volumes will be added together. 5.
3.6. M AINTENANCE: Marco machines have been designed to give many years of trouble free service. Marco Beverage Systems manufacture and test to ISO9002:2000 standard. The only regular maintenance required is occasional de-scaling. Descaling Procedure: • Isolate machine from power supply. • Isolate machine from water supply. • ALLOW TO COOL COMPLETELY! • Drain water from machine. • Remove all lids.
4. Technical Data: 4.1. GENERAL DESCRIPTION: ECO Boiler PB5, PB10, T5, T10. Dimensions Height (mm) Width (mm) Depth – counter footprint (mm) Depth – to front of Tap (mm) Depth incl. Drip Tray (mm) PB5 465 210 360 460 Performance Immediate Draw-Off (litres) Max. Hourly Output (litres/hour) 5 33 Electrical Connection 2.8kW,230V, c/w 1.5m flex and moulded plug fused (BS1363). Plumbing Fittings Pressure 0.75” BSP Food grade inlet hose supplied 5-50 psi (35-345 kPa) 4.2.
4.3. ACCESS TO INTE RNAL COMPONENTS: To access the tank: Allow to cool. Remove the outer lid. Ensure that the tank is cool, before removing inner lid. To remove inner lid, undo 4 butterfly nuts The tank is now accessible for cleaning. To access the internal components: Ball Stud/ Spring Clip locations Ball Stud Service Manual 1000660 T5 1000661 T10 1000665 PB5 1000666 PB10 Ecoboiler 231109.
• Disconnect the machine from the electrical supply. • Allow to cool sufficiently. • The metal Front Fascia Top and Bottom panels are fixed to the surround with ball studs that • • • • lock into spring clips mounted in the surround panel – refer to picture above. To separate the ball studs from the spring clips insert a flat headed screwdriver at the locations indicated on the picture and lever apart the front panels from the surround.
4.4. INTERNAL ARR ANGEMENT: High Level Probe Assembly (2300463) Mid Level Probe Assembly (2300463) – (10L variants only) Low Level Probe Assembly (2300463) Thermal Switch 130Deg (1502087) Spigot Element 2.8kW 230V (1500985) PCB Ecoboiler Control (1600345) PCB Bracket Valve inlet Solenoid (1502190) Overflow Hose 4.5. PCBs: 4.5.1.
4.5.2. PCB Ecoboiler Control: 8 9 10 7 11 6 6 12 5 13 4 14 3 15 2 19 1 19 16 17 18 COMPONENTS OF PCB ECOBOILER CONTROLLER 2008: 1. 2. 3. 4. 5. 6. Dispense Solenoid Tab Inlet Solenoid Tab Neutral Tabs Transformer Mains Live In Tab Relays - Heater • Switch the element 7. Heater Tab 8. On/Off 2-way Connector • Short circuited on this Ecoboiler machines – power switch controlled through the display PCB 9. LED 5-way Connector 10. Earth Tab 11.
4.5.3. PCB Display Ecoboiler 5L (1600348) 1. Power On LED’s • shows that machine is switched on 2. Status LED’s • displays Error signals via a flashing RED LED 3. Power On/Off switch 4. 5 way connector – to PCB Ecoboiler LED connector 5. 4 way connector – to PCB Ecoboiler BUTTONS connector 1 3 2 5 4.5.4. 4 PCB Display Ecoboiler 10L (1600349) 1. 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.
4.6. TROUBLESHOOTING – DIAGNOSTIC GUIDE: 2 FLASH CYCLE – BELOW LOW LEVEL Display pattern: • 2 flashes then a short pause - repeated. Electronic check and action: • This indicates that the low level circuit is open i.e. the probe is not in contact with the water. • The element is switched OFF at this stage and the inlet is left ON. (note that if this is a low probe wiring fault, the water will stop at the high level probe regardless of the status of the low level). • This is a recoverable error i.e.
4.6. TROUBLESHOOTING – DIAGNOSTIC GUIDE cont: Action required: 1. Check that the resistance on the elements. If there is a reasonable resistance (15-25Ω)on the element it probably has not failed, so the wiring might be at fault. 5 FLASH CYCLE – THERMISTOR SHORT CIRCUIT Display pattern: • 5 flashes then a short pause - repeated. Electronic check: • This indicates that the Thermistor is measuring zero resistance. It assumes the thermistor has failed sort circuit.
4.7. Tank Components The tank internals are detailed below. Care should be taken when cleaning inside the tank. 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 10L Ecoboiler versions and 2 level probes on the 5L versions.
4.9. Wiring Diagram 1000660 Ecoboiler T5 Service Manual 1000660 T5 1000661 T10 1000665 PB5 1000666 PB10 Ecoboiler 231109.
4.10. Wiring Diagrams 1000661 Ecoboiler T10 Service Manual 1000660 T5 1000661 T10 1000665 PB5 1000666 PB10 Ecoboiler 231109.
4.11. Wiring Diagram 1000665 Ecoboiler PB5 Service Manual 1000660 T5 1000661 T10 1000665 PB5 1000666 PB10 Ecoboiler 231109.
4.12. Wiring Diagram 1000666 E coboiler P B10 Service Manual 1000660 T5 1000661 T10 1000665 PB5 1000666 PB10 Ecoboiler 231109.
4.13. Spare Par ts List Part Number 1600345 1600348 1600349 2100279 1401170 1400550 1502190 1502156 1500985 1600691 2301463 1801425 1801426 1801427 1801428 2300271 2300384 2300386 1900651 1900652 1900397 1800306 1800307 1501217 1501430 8800121 8000240 Description PCB Ecoboiler Control Rev 2.0 PCB Ecoboiler Display 5L Rev 1.0 PCB Ecoboiler Display 10L Rev 1.0 Tap Hot Water Nut Chromed for Tap Circlip for Tap Valve Inlet Solenoid Valve Dispense Solenoid Muller Element 2.
