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22) N° 93-Tools maintenance alarm.
Grinder mainte. 93
This alarm is visualised on display by code 93
Cause: the tools have reached the set up working time (see Service chapter )
Result: none.
Solution: replace the tools and cancel the alarm following the procedure explained in the info reset chapter.
23) Safety valve operation.
No messages on the display
Cause: overpressure in steam boiler
Result: the safety valve opened at 1.7-1.9 bars, the steam is conveyed to the drip tray by means of a silicone tube.
Cause: overpressure in the steam boiler or faulty safety valve.
Solution: carry out the following controls.
1)
Temperature probe of the boiler (see boiler temperature alarm)
2)
Contacts of the electromagnetic switch of the electric element are stacked
3)
Replace the safety valve in case it releases steam at a pressure lower than 1.7 bars,
24) Steam boiler Klicson cutoff.
No messages on the display
Cause: The temperature of the boiler has reached the limit of 145°C.
Result: the steam boiler heating is interrupted.
Solution: carry out the following controls.
1)
Faulty temperature probe
2)
Faulty TRIAC of the heating element
3)
Faulty klicson
4)
Faulty Level probe
5)
The water level in the boiler has dropped lower than the heating element.
WARNING:
To activate the safety thermostat, it is necessary to press the button placed at the centre of the thermostat itself.
25) Coffee boiler Klicson cutoff.
No messages on the display
Cause: The temperature of the boiler has reached the limit of 120°C.
Result: the coffee boiler heating is interrupted.
Solution: carry out the following controls.
6)
Faulty temperature probe
7)
Faulty TRIAC of the heating element
8)
Faulty klicson
9)
No water inlet.
WARNING:
To activate the safety thermostat, it is necessary to press the button placed at the centre of the thermostat itself.
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