La Marzocco marco 1000740 Service Manual - page 5
Service manual 1000740 1000741 1000742 1000750 1000751 1000752 06-12-11
Page 5 of 24
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.
Ecosmart UC4L /Ecosmart UC10L
PLEASE REFER TO INSTRUCTION BOOKLET FOR TEMPERATURE CALIBRATION.
3.4.
TIME/VOLUME DISPENSE C ALIBR AT ION
Ecoboiler UC4L/ Ecoboiler UC10L
1. Open the service panel.
2. Make sure that the machine is powered, filled and heated (ready lamp green).
3. Press calibration tactile button on the PCB for a second until status lamp starts blinking red-green.
4. 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. To confirm and save new value press calibration button on the PCB for a second until the status
lamp stops blinking.
6. S
etting 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).
3.5.
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
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.
Note:
Some of the erro r se quen ces will be displa yed if there is lo w wate r p ressu re.
Please check that there is wate r p ressure and that the wa ter stop -va lve is op en
before callin g you r service a gent.
For a more detaile d description of error ind icato rs and corre ctive actions see s ection
4.7 of this manual.