Display Of Alarms; Volumetric Counter Alarm (100 Touch); Autolevel Alarm; Maximum Water Level In Boiler Alarm - SM 100 touch Serie Manual De Uso Y Mantenimiento

11. Display of alarms

11.1 Volumetric counter alarm (100 tOUCh)

On models 100 tOUCh, all equipped with six-LED bar, if there is no detection of impulses of the volumetric
counter for 5 seconds, the LED's that are already on will start flashing to indicate the anomaly. If the anomaly
is detected before any of the LED's on the bar come on, only the LED of the short coffee key for the concerned
group will flash.
If no impulses of the volumetric counter are detected for 45 consecutive seconds, the amount of coffee being
served is automatically interrupted.
Note:
Make sure that serving into the cup has taken place correctly. If serving has not occurred correctly, see the
chapter "PROBLEMS AND SOLUTIONS".

11.2 Autolevel alarm

If the water level in the boiler is below normal and the pump is not able to restore that level after 150 seconds,
the electronic control unit of the machine will stop automatic filling and signal the problem via simultaneous
flashing of the double short coffee button of all groups plus the large tea key and the first of the three LED's
of the electronic level control.
Note:
If the boiler is not properly filled with water, see the chapter on problems and solutions .

11.3 Maximum water level in boiler alarm

If the level of water in the boiler is over the safe level, the electronic control unit will stop automatic filling and
signal the problem through simultaneous flashing of the serving buttons plus the three LED's of the electronic
level control.
Note:
If the maximum boiler level alarm trips, see the chapter on problems and solutions

12. Safety devices

12.1 Manual reset safety thermostat

the safety thermostat is located next to the control unit and can be accessed by removing the left side panel
from the machine. the thermostat probe, placed inside the electric heating elements, cuts the electric power
supply any time there is an abnormal increase in temperature. the heating elements will no longer hear the
water in the boiler and it will not be possible to use the machine correctly. Contact a technician from the LA
SAN MARCO SPA technical service centre.
The safety thermostat will have to be reset by the specialized technician LA SAN MARCO SPA,
who must first remove the cause of the malfunction.

12.2 Safety valve

the safety valve is installed on the upper part of the boiler, in the part corresponding to the area occupied
by the steam. the valve is activated if there is a considerable pressure increase inside the boiler. the valve
rapidly lowers the pressure by expelling the steam in the atmosphere (the valve trips in at 2÷2.5 bar). If the
safety valve trips in, the steam is held and dissipated inside the machine frame, so as to avoid hazards for
the persons around the machine.
In case of activation of the safety valve, switch off the machine and immediately contact the spe-
cialized technician.If the safety valve is set off, switch the machine off and immediately contact
the authorized La San Marco technician.
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