Marco Beverage Systems Ecoboiler UC45 1000743, Service Manual

Page: 5 / 28

Service manual April 2017 Ecoboiler UC45 Page 5 of 28
3.3. T EM PERAT URE CAL IBR AT ION
3.3.1 Eco Boiler version
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 90°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.
3.3.2. Eco Smart version
•
Press and release Power and ECO buttons simultaneously.
•
User setup screen will appear on the display.
•
Current preset temperature will be shown in the first line of the screen.
•
Use ECO button to increase value (button can be held for repeated increase). Once the value
goes above the max value (99.5°C) it will reset to 60°C and start incrementing from that value.
•
Once you set new temperature 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.
NOTE : Make sure that the temperature it least 2°C below the boiling point (which may vary between
90 and 102°C depending on the air pressure). As a rule of the thumb the max temperature should not
be set for more than 97.5°C.
3.4. T IM E/VOLUM E DISPENSE CAL IBR AT IO N
3.4.1. 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 does not
have to be dispensed in a single push - if the button is pressed few times the overall time
will be used.