Marco Ecoboiler T20 Manuel utilisateur

Ecoboiler T20 & 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: (0207) 978 8141

T20-T30 Servuce Manual 11/07/2014 Page 2 of 18

CONTENTS:

PAGE

1. INTRODUCTION 3

2. SAFETY INSTRUCTIONS 3

3. BASIC INSTRUCTIONS 4

3.1. Installation Details 4

3.2. Operation 4

3.3. Troubleshooting 5

3.4. Maintenance 6

3.5. Cleaning 6

3.6. Limescale 6

3.7. Cautions and Safety Tips 6

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 (1600345) 12

4.5.3. PCB Display 20/T30 Ecoboiler (1600349) 12

4.6. Troubleshooting –Diagnostic guide 13

4.7. Tank Components 15

4.8. Descaling procedure 15

4.9. Wiring Diagram 1000660 Ecoboiler T20-3 16

4.10. Wiring Diagram 1000661 Ecoboiler T20-6 and T30 17

4.11. Spare Parts List 18

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.

T20-T30 Servuce Manual 11/07/2014 Page 4 of 18

3.BASIC INSTRUCTIONS:

3.1. INSTALLATION DETAILS:

Electrical installation:

EcoBoiler T20-3 (2.8kW) - A moulded 13A plug is factory fitted. A suitable 13A outlet is all that

is required.

EcoBoiler T20-6/T30 (5.6kW) –Needs to be hard-wired to a dedicated 30amp spur.

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)

Fit a stop Valve on a cold water line and attach a 3/4" BSP male fitting,

(e.g. 3/4" x 1/2" 311 or washing machine type stop valve).

Connect straight tailpiece of the inlet hose to the stop valve fitting. Make sure that the pre-

attached sealing washer is fitted.

Turn on the water to flush any impurities, dust etc from the inlet hose and water pipe. Allow

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.

3.2. OPERATION:

Check that all installation procedures have been carried out.

Ensure water valve is on.

Plug boiler into 13A socket and press power button on the front of the machine marked

‘Power’. Refer to Figure 1.

The “power on” light will glow green and the machine will fill to a safe level, above the

elements, before heating.

The “Ready/Status” light will cycle two red flashes while the machine is filling to the safe level.

After this amount of water has heated to about 96ºC the boiler will draw more water in until the

temperature drops by 1 or 2 degrees. The boiler will then heat again. This heat fill cycle

continues until the boiler is full.

Whilst the machine is above the safe level and filling, the “Ready/Status” light will remain

blank.

The “Ready/Status” light will glow green when the machine is both full and up to normal

operating temperature.

The boiler is now ready for use.

T20-T30 Servuce Manual 11/07/2014 Page 5 of 18

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. TROUBLESHOOTING

The Ready/Status light signals various errors or problems.

A cycle of red flashes indicates an error. The number of flashes in a cycle corresponds to the

symptom in the table below:

Status/Diagnostic light guide:

No of

flashes

Symptom

Action required

Water level below elements. Normal

when machine first fills.

Check water pressure , if this is OK then call

service agent.

Temperature sensor failure (o/c)

Call service agent

Water not heating

Call service agent

Temperature sensor failure (s/c)

Call service agent

Machine not filling

Check water pressure. If OK –switch machine off

and on again. If problem reoccurs - call service

agent.

Note: Some of the error sequences will be displayed if there is low water

pressure. Please check that there is water pressure and that the water stop-

valve is open before calling your service agent.

For a more detailed description of error indicators and corrective actions see

section 4.7 of this manual.

Power

Button

Ready/Status

Indicator

Ecomode

Button

T20-T30 Servuce Manual 11/07/2014 Page 6 of 18

3.4. MAINTENANCE:

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.

Remove as much scale as possible by hand, paying particular attention to level probes (White

plastic with steel tab). Be very careful not to damage any attachments.

Use ScaleKleen, Marco part No. 8000270 or similar. Follow instructions carefully.

Thoroughly clean and flush the machine before re-use.

Follow installation and first time operation instructions

3.5. CLEANING:

The exterior of these machines may be cleaned with a damp cloth and a light detergent. Do not use

abrasive cloths or creams, as this will spoil the finish of the machine. Do not use a water jet or spray.

Beware of accidentally operating the draw off tap or push button when cleaning the front of the

machine.

3.6. LIMESCALE:

In common with all water boiler manufacturers, service calls resulting from limescale 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 descaling is required

depends on the local water supply; hard water areas need more attention. A scale reducer can

reduce the build up of scaling, but may not stop it altogether. Descaling of the machine should ideally

be carried out by qualified service personnel.

3.7. CAUTIONS AND SAFETY TIPS:

This appliance must be earthed. If the moulded plug supplied is not used then ensure that the

green/yellow cable is connected to a suitable earth.

Risk of flooding. The hose supplied with this unit is non-toxic food quality tested to 190psi.

However, a hose is not a permanent connection. It is, therefore, advisable to switch off boiler

and close the stopcock valve when boiler is not in use, e.g. overnight, weekends etc.

Risk of scalding. Beware of accidentally operating the water draw-off tap especially when

cleaning the front of the boiler.

The utmost care has been taken in the manufacture and testing of this unit. Failure to install,

maintain and / or operate this boiler according to the manufacturer’s instructions may result in

conditions that can cause injury or damage to property. If in any doubt about the serviceability

of the boiler always contact the manufacturer or your own supplier for advice.

T20-T30 Servuce Manual 11/07/2014 Page 7 of 18

4.Technical Data:

4.1. GENERAL DESCRIPTION:

ECO Boiler T20-3, T20-6, T30.

T20-3

T20-6

T30

Dimensions

Height (mm)

Width (mm)

Depth –counter footprint (mm)

Depth –to front of Tap (mm)

Depth incl. Drip 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)

Electrical

Connection

2.8kW, 230V, c/w 1.5m flex and moulded plug

- fused (BS1363).

5.6kW Hard-wired Switched Spur

Plumbing

Fittings

Pressure

3/4” BSP

Food grade inlet hose supplied

5-50 psi (35-345 kPa)

4.2. EXTERNAL ARRANGEMENT:

Surround

Panel

Tap

Front Panel

Outer Lid

Drip Tray

T20-T30 Servuce Manual 11/07/2014 Page 8 of 18

4.3. ACCESS TO INTERNAL COMPONENTS:

To access the tank:

To access the internal components:

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.

To remove the Front Fascia Top panel, after separating the ball stud from the spring clip,

rotate the top edge of the panel forward and pull the panel in an upwards motion.

Place the panel to the side of the machine

To remove the Front Fascia Bottom, after separating the ball stud from the spring clip, rotate

the bottom edge of panel forwards and pull in a downward motion. This panel is now free to be

placed out of the way.

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.

Ball Stud

Spring

Clip

T20-T30 Servuce Manual 11/07/2014 Page 9 of 18

This allows access to most of the internal components and the machine does not need to be

drained for most maintenance or service operations.

If further access is required, the plastic Front Fascia Middle panel should be removed 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 removing the plug from the end of the drain hose, and draining

into an external drain or a large container.

Inlet Solenoid Access:

To access the inlet solenoid, the PCB and PCB bracket need to be removed.

Unscrew the two cross-recessed pan headed screws holding the bracket in place.

T20-T30 Servuce Manual 11/07/2014 Page 10 of 18

4.4. INTERNAL ARRANGEMENT:

4.5. PCBs:

4.5.1. PCB Layout:

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) consists of:

Power On/Off button

Power On LED

Status/Ready LED

ECO Mode On/Off Button

ECO Mode On LED

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