Marco Ecoboiler WMT5 Bedienungsanleitung

Ecoboiler WMT5

Ecoboiler WMPB5

Ecoboiler WMT3

Ecoboiler WMPB3

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

Service Manual Ecoboiler wallmount 1000671 100676 061010 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. Calibration 5

3.4. Troubleshooting 5

3.5. Maintenance 5

3.6. Cleaning 6

3.7. Limescale 6

3.8. Cautions and Safety Tips 6

4. TECHNICAL DATA

4.1. General Description 6

4.2. External Arrangement 7

4.3. Internal Arrangement 7

4.4. Access to internal components 8

4.5. PCBs 9

4.5.1. PCB Layout 9

4.5.2. PCB Ecoboiler Control –1600345 10

4.5.3. PCB Ecoboiler Display 10L –1600349 11

4.6. Troubleshooting –Diagnostic guide 11

4.7. Tank Components 14

4.8. Descaling procedure 15

4.9. Wiring Diagram 1000671 Ecoboiler WM5 16

4.10. Spare Parts List 18

Service Manual Ecoboiler wallmount 1000671 100676 061010 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 Wallmount Range. 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.

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.

Service Manual Ecoboiler wallmount 1000671 100676 061010 Page 4 of 18

3. BASIC INSTRUCTIONS:

3.1. INSTALLATION DETAILS:

Electrical installation:

o2.4kW

oSuitable cabling and fusing for a 2.4-3 kW circuit.

oEnsure the machine is fully earthed.

Plumbing installation procedure:

Note: Marco recommend that this machine be positioned over 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 litres through.

Connect the hose to the inlet valve of the boiler (again 3/4" BSP). The orientantion of the

tail piece will vary depending on whether machine is plumbed at the rear or at the

underside.

oWhen the machine is plumbed from the rear , connect right-angled tailpiece to the

inlet valve of the boiler (again ¾” BSP)

oWhen the machine is plumbed from the underside , connect non-angled tailpiece to

the inlet valve of the boiler (again ¾” 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 and there is power to the appliance.

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.

NOTE:

Because the boiler is electronically controlled no priming is necessary.

The element cannot switch on until a safe level of water is reached.

Ready/Status

Indicator

Power

Button

Ecomode

Button

Service Manual Ecoboiler wallmount 1000671 100676 061010 Page 5 of 18

3.3. 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 95°C.

If the temperature setting needs to be modified on-site please follow the steps below:

1. To Enter Calibration mode:

a. Turn the machine off at the mains power supply.

b. Then, whilst depressing the tactile switch on the PCB, turn the mains power back on.

c. All available LED’s on the front panel will now blink continuously.

d. The machine is now in Calibration mode.

2. In Calibration Mode the machine will heat continuously until the tactile switch on the PCB is

pressed for a second time (NB: The tactile switch should be pressed for at least 1 second)

3. Using a thermometer to measure the temperature at the thermistor pocket, the machine

should be allowed to reach the desired set-temperature. (NB: It may be necessary to let the

unit cool down if the desired set point is lower than the units current temperature)

4. Following a correct calibration procedure the tank temperature should be maintained within

3°C of the desired set-point temperature.

In the event of an incorrect calibration process the steps below should be followed:

5. If the tactile switch is pressed too early and the temperature is set lower than desired, the

tester should simply repeat calibration.

6. If the tactile switch is pressed too late and the set temperature is too high, the tester will

need to wait for the temperature in the tank to cool, or add cool water, and then repeat

calibration.

3.4. 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.

3.5. 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.

Service Manual Ecoboiler wallmount 1000671 100676 061010 Page 6 of 18

3.6. 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.

3.7. 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.

3.8. CAUTIONS AND SAFETY TIPS:

This appliance must be earthed.

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.

4. Technical Data:

4.1. GENERAL DESCRIPTION:

ECO Boiler WMT3, WMPB3, WMT5, WMPB5

WMT3

WMPB3

WMT5

WMPB5

Dimensions

Height (mm)

Width (mm)

Depth (mm)

447

325

222

447

325

222

447

325

222

447

325

222

Performance

Immediate Draw-Off (litres)

Max. Hourly Output

(litres/hour)

5.6ltr

24ltr

5.6ltr

24ltr

5.6ltr

24ltr

5.6ltr

24ltr

Electrical

Connection

2.4kW, 230V.

Plumbing

Fittings

Pressure

0.75” BSP

Food grade inlet hose supplied

5-50 psi (35-345 kPa)

Service Manual Ecoboiler wallmount 1000671 100676 061010 Page 7 of 18

4.2. EXTERNAL ARRANGEMENT:

4.3. INTERNAL ARRANGEMENT:

Side Panel

Tap/

Push Button

Fixed centre

panel

Top tank access Lid

High Level Probe Assembly (2300463)

Low Level Probe

Assembly (2300463)

PCB Ecoboiler

Control (1600345)

ELEMENT 2.4kW

230V 1500950

Valve inlet

Solenoid (1502190)

Overflow

TuberHose

Mid Level Probe Assembly (2300463)

Thermal Switch

130Deg (1502087)

Terminal Mains

Connector

1502011

Thermistor Pocket U Shape

2300765

PCB Bracket

Service Manual Ecoboiler wallmount 1000671 100676 061010 Page 8 of 18

4.4. ACCESS TO INTERNAL COMPONENTS:

ANY MAINTENANCE WORK ON ANY

ECOBOILER PRODUCT SHOULD ONLY BE

CONDUCTED BY A TRAINED SERVICE

ENGINEER.

Removal

1. Disconnect the machine from the

electrical supply.

2. Allow to cool sufficiently.

3. The removable Side Panels are fixed at

the top of the machine.

4. Unscrew with a Philips head screwdriver.

5. Remove the panels in an upward and

outward motion.

Reassembly

To re-attach the side panels, complete the

removal actions in steps 4 & 5 in reverse order.

Ensure that the panel screws are securely

fastened.

6. Reassembly

8. To re-attach the side panels, complete

the removal actions in steps 4 & 5 in

reverse order. Ensure that the panel

screws are securely fastened.

Service Manual Ecoboiler wallmount 1000671 100676 061010 Page 9 of 18

Inlet Solenoid Access:

To access the inlet solenoid,

Unscrew the two cross-

recessed pan headed

screws holding the bracket

in place.

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

PCB Ecoboiler Control (1600345)

PCB Ecoboiler Display 10L (1600349)

Service Manual Ecoboiler wallmount 1000671 100676 061010 Page 10 of 18

4.5.2. PCB Ecoboiler Control:

COMPONENTS OF PCB ECOBOILER CONTROLLER 2008:

1. Dispense Solenoid Tab

2. Inlet Solenoid Tab

3. Neutral Tabs

4. Transformer

5. Mains Live In Tab

6. 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.Daughter PCB Connector (low voltage)

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