Iberital 1 series, Руководство по эксплуатации, Страница: 23 / 38

IBERITAL DE RECAMBIOS, S.A.
Page 22 of 22 manual electr.ce ingles 22-11-2004.doc
2.5.2. - PRESSURE ELIMINATING VALVE (empty valve)
This valve (32), which is located on the boiler, prevents depressurization inside the boiler
therefore avoiding the risk of liquids being sucked back through the steam jet.
2.5.3.- OPTICAL LEVEL CONTROL AND AUTOMATIC WATER LEVEL DEVICE
48) Solenoid valve
A probe (62) (consisting of a stainless steel rod which is in contact with the water inside the
boiler) positioned the water level in the optical level device (11). The probe is connected to
the electronic control (CPU)(1) signaling a low water level in the boiler. Then, the CPU
switches on the pump (29) and activates the solenoid valve (48), therefore allowing to pass
water until the correct water level in the boiler has been reached.
2.5.4.- VALVE UNIT
13) Boiler manual filling button
35) Expansion valve (set to open at approx. 12 bar -/+1)
2.6.- MOTOR PUMP
59) Lock nut
60) Setting screw
Power consumption: 250W. The motor pump turns on when the coffee feed button is pressed,
increasing the pressure to the 8/9 bar required for making the coffee.
The motor pump is also controlled by the level device for the automatic fill-up of the boiler.
To regulate the pressure of the motor pump proceed as follows: release the lock nut (59)
which fastens the setting screw (60), loosen the screw (60) to reduce the pressure or tighten to
increase the pressure. After having finished tighten the lock nut (59).