Marco 1000743, 1000744, 1000744US, 1000745, 1000753 Instruction Manual

Marco Beverage Systems Ltd.

INSTRUCTIONS FOR MODEL

Ecoboiler UC45

1000743 (2.8kW)
1000744 (5.6kW)

1000744US (5.6kW)

1000745 (8.4kW)
1000753 (2.8kW)
1000754 (5.6kW)

1000755 (8.4kW)
1000743A (2.8kW)
1000744A (5.6kW)
1000745A (8.4kW)
1000753A (2.8kW)
1000754A (5.6kW)
1000755A (8.4kW)

Water pressure : 5 - 50 psi (min.-max.)35 - 345 kPa (min.-max.)

E337347

NSF/ANSI 4

Marco Beverage Systems Limited.

63d Heather Road,
Sandyford Industrial Estate,
Dublin 18.

Marco Beverage Systems
Limited.

Shire House, Strixton Manor,
Strixton, Wellingborough, Northants,
NN29 7PA

Ireland Tel: [phone]
Ireland Fax: [phone]
email: [e-mail]
www.marco.ie

UK Tel: [phone]
UK Fax: [phone]
email: [e-mail]
www.marco-bev.co.uk

1900055 REV.8 Page 2 of 17

Installation details:
Power Supply:

 1000744, 100744US, 1000744A, 1000754, 1000754A (5.6kW/230V, 6.1kW/240V) - This needs to

be connected to a 30A isolator outlet.

 1000743, 1000743A, 1000753, 1000753A(2.8kW, 230V) – connected via a 13A plug.
 1000745, 1000745A, 1000755 , 1000755A (8.4kW, 230V) – requires a 3 Phase (3L,-N-PE)

Connection.
A qualified electrician should carry out such connections.

 1000746 - The unit must be connected to a suitable three-phase power supply. A qualified

electrician must do this.

o See Rating Plate for supply voltage and power rating.

.

Water Pressure: 5 - 50 psi (min.-max.) 35 - 345 kPa (min.-max.)

Installation procedure:

 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).
 For US versions use 3/8” NPT male fitting.
 Connect straight tailpiece of the 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.
 If the overflow vent is plumbed it must be plumbed with a tundish device.
 This equipment must be installed with adequate backflow protection to comply with all

applicable federal, state and local codes.

NOTE: In time-dispense application, supplied non-return valve may be fitted into the font
silicone connect to the water font connection. Ensure the black line on the non-return is
in the correct orientation. (Black line to the bottom)

1900055 REV.8 Page 3 of 17

ECO BOILER VERSION

1000743 (2.8kW), 1000744 (5.6kW), 1000744US (5.6kW), 1000745 (8.4kW), 1000743A (2.8kW),

1000744A (5.6kW), 1000745A (8.4kW)

Operating boiler for the first time:

Setting time dispense for two left hand side pumps.

 Open the service door on the front panel
 Once the machine is full and heated up (the status LED glowing green) press the tactile switch

on the TOP control PCB (timer board).

 Both pumps will turn on and off for 0.1s - that will be heard as a click meaning that the timer is

in the calibration mode. For 3 pump version see note 8 below.

 Place an empty cup (measuring jug) underneath the font that is to be calibrated.
 Press and hold a font button until you get the right amount of water. The water do not have to

be dispensed in a single push - if the button is pressed few times the overall time will be used.

 Do the same action with the other font if needed. If only one font is calibrated, settings for the

other will not be altered.

 The minimum time possible for the time dispense operation is 1s. Setting the dispense time for

less (quick font button click) will set the font back into "push & hold" mode.

 After the volumes are set properly press the tactile button on the timer board once again.
 Both pumps will turn on and off for 0.1s twice - that will be heard as a double click meaning

that the timer is out of calibration.

 Please note that there is no given order which font is to be calibrated first - in fact they may be

calibrated at once or only one may be calibrated (leaving the settings of the other unaltered).

 If there is no response from the user in the calibration mode (none of the font buttons pressed)

for more than 25 seconds the timer will end the calibration (double pump "click" will be heard).

 The maximum allowable time of dispense is 25 seconds. Any longer times will be cut down to

25 seconds.

 The resolution of the time measurement is 0.1s.
 The timer board has its own clock on board therefore power line frequency is not used to

measure the time.

Setting time dispense for right hand side pump (3 font version only)

 Open the service panel.
 Make sure that the machine is powered, filled and heated (ready lamp green).
 Press calibration tactile button on the BOTTOM control 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.

 To confirm and save new value press calibration button on the PCB for a second until the

status lamp stops blinking.

 Setting dispense time / volume to zero (omit step 4) will make the machine work as “push &

hold” (water dispensed as long as the button is pressed).

1900055 REV.8 Page 4 of 17

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:

LED

Status

AMBER

Tank below set point temperature.

Machine is heating.

GREEN

Machine ready.

FLASHING

RED

Diagnostics error. See table below.

NOTE: It is normal for the machine to show

two flashes error (water level below elements)

once it is filling for the first time.

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.

No of

flashes

Symptom

Action required

2

Water level below elements. Normal

when machine first fills.

Check water pressure , if this is OK then

call service agent.

3

Temperature sensor failure (s/c)

Call service agent

4

Water not heating

Call service agent

5

Temperature sensor failure (o/c)

Call service agent

6

Machine not filling

Check water pressure.

1900055 REV.8 Page 5 of 17

ECO SMART VERSION

1000753 (2.8kW), 1000754 (5.6kW), 1000755 (8.4kW), 1000753A (2.8kW), 1000754A (5.6kW),

1000755A (8.4kW)

Operating boiler for the first time:

 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 display will show the current water temperature and the status “ Filling…”

 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 92ºC 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.

 While 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. For 10L machines allow approx 30 minutes.

 The boiler is now ready for use – the display will show the Water Temperature and the status “

READY”.

 The Boiler may now be used to dispense Hot Water to the preset factory settings.

o 90ºC
o Push and Hold operation
o Continuous flow – no pulsing
o Auto heat Fill Mode.

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.

Power
Button

EcoMode
Button

1900055 REV.8 Page 6 of 17

Setting time dispense for two left hand side pumps.

 Open the service door on the front panel
 Once the machine is full and heated up (the status LED glowing green) press the tactile switch

on the TOP control PCB (timer board).

 Both pumps will turn on and off for 0.1s - that will be heard as a click meaning that the timer is

in the calibration mode. For 3 pump version see note 8 below.

 Place an empty cup (measuring jug) underneath the font that is to be calibrated.
 Press and hold a font button until you get the right amount of water. The water do not have to

be dispensed in a single push - if the button is pressed few times the overall time will be used.

 Do the same action with the other font if needed. If only one font is calibrated, settings for the

other will not be altered.

 The minimum time possible for the time dispense operation is 1s. Setting the dispense time for

less (quick font button click) will set the font back into "push & hold" mode.

 After the volumes are set properly press the tactile button on the timer board once again.
 Both pumps will turn on and off for 0.1s twice - that will be heard as a double click meaning

that the timer is out of calibration.

 Please note that there is no given order which font is to be calibrated first - in fact they may be

calibrated at once or only one may be calibrated (leaving the settings of the other unaltered).

 If there is no response from the user in the calibration mode (none of the font buttons pressed)

for more than 25 seconds the timer will end the calibration (double pump "click" will be heard).

 The maximum allowable time of dispense is 25 seconds. Any longer times will be cut down to

25 seconds.

 The resolution of the time measurement is 0.1s.
 The timer board has its own clock on board therefore power line frequency is not used to

measure the time.

Setting time dispense for right hand side pump (3 font version only)

 Press and release Power and ECO buttons simultaneously.
 User setup screen will appear on the display.
 Click Power button to highlight TIME DISP option.
 Use ECO button to increase value (button can be held for repeated increase). Once the value

goes above the max value 99.9s it will reset to 0 and start incrementing from that value.

 Setting dispense time to 0 will make the pump work in push-and-hold mode.
 Once you set new dispense time use Power button to scroll through other options until you find

SAVE AND EXIT and press ECO button to accept.

 Machine will reset and go back into main screen.