La San Marco PLUS 5, Техническое руководство по эксплуатации

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11) N° 38 Steam boiler temperature alarm.
Steam temperat. 38
This alarm is visualised on display by code 38
First case : the temperature inside the steam boiler has reached the limit value of 129°C (264.2°F) or more.
Result: boiler heating is interrupted and all dose buttons are disabled.
Solution: turn OFF the machine. Replace the TRIAC of the heating element steam boiler. Turn the machine ON.
Second case : the temperature probe is defective. The probe sends the following signal to the pcb: 0 Ohm.
Result: boiler heating is interrupted and all dose buttons are disabled.
Solution: turn OFF the machine. Replace the temperature probe. Turn the machine ON.
Third case : the temperature probe is defective. The probe sends the following signal to the pcb: 154 Ohm (short circuit).
Result: boiler heating is interrupted and all dose buttons are disabled.
Solution:turn OFF the machine. Replace the temperature probe. Turn the machine ON.
12) N° 40 Flowmeter alarm.
Flowmeter error 40
This alarm is visualised on display by code 40.
Cause: the flowmeter is not sending signals to the control unit within a time-out of 5 seconds.
Result: delivery continues up to a time-out of 120 seconds or until the selected key is pressed.
Check the following:
1)
No water from mains (coffee is not dispensed)
2) clogged group piston filters (coffee is not dispensed)
3) faulty group solenoid valve (coffee is not dispensed)
4) clogged inlet filters (coffee is not dispensed)
5) blocked flowmeter (coffee is not dispensed)
6) or faulty flowmeter (coffee dispensed continuously)
7) faulty electrical connection (coffee dispensed continuously).
Note: If the coffee is dispensed continuously, use the machine as if it were manual: press the required key to start up the
dose, then press the same key to stop the dose being dispensed, after checking the amount in the cup.
If dispensing continues until the above mentioned time-out of 120 seconds, the dispensing will be stopped and display
shows:
Infusion T.O. 41
This alarm is visualised on display by code 41.
The message signals that a time-out problem of the flowmeter occurred.
At the next dose the message will be cancelled if dispensing is carried out correctly.