Pressure Switch; Turbidity Sensor; Drain Hose - Hotpoint Ariston LFF 825 IT Service Manual

Litre-counter turbine:
As in Evo 3, it monitors the amount of water entering the appliance. This information is verified by the

pressure switch.

Every 270 impulses emitted by the turbine equals approx. 1 litre of water. This setting will have a correction
value of around 2 %. Where the water pressure is lower than 1 bar, the correction value will be 6 %.
Note.: Below 0.5 Bar, the litre-counter reading system might not work properly.
Regeneration Solenoid Valve:
It is fixed to the water softener and its function is to allow the flow of water to pass through the salt in order
to collect brine, which is used to regenerate the resins.
Pressure switch:
The pressure switch, although physically identical, has a different calibration from that of EVO 3, so it is
not interchangeable.
Pressure switch hose:
Special hooks have been designed to keep the pressure switch in place and thus guarantee the seal,
ensuring the hose does not fall and risk filling up with water.
The hose must be inserted so that it is not overly taut.
RFI Filter & Plug:
There are two kinds of electrical socket, one for the European market and one for the UK market. There
are also two kinds of filter, one for the synchronous wash motor and another for the BLDC motor (in total
4 different spare part codes).
Wiring:
Wiring is specific for each type of dishwasher, and is managed by the spares warehouse in odd volumes
(like those of washing machines and EVO 2).
Reservoir:
The reservoir is very different from that on Evo 3 and is fixed to the tank with 4 screws. It is designed to house
other components, for example: Drain Pump, Turbidity Sensor, Drain Hose, AC Wash Motor, NTC, Air trap.

Turbidity sensor:

Although physically different, it performs the same functions as in Platform Evo 3, i.e. it gauges the level
of soiling of crockery in order to establish the wash characteristics accordingly. It is sited in the reservoir,
in direct contact with the water.
Spoiler and water diverter:
Designed to limit suction of water during the wash cycle, it prevents the motor from running without water.
It uses basket filters over the entire filter surface.

Drain hose:

The drain hose is connected to the reservoir by means of a press-fit connection. 2 O-rings seal the connection.
The antirelease mechanism consists of hose fixture using a mechanical blocking device on the lower rear
crosspiece.
Hinges:
The hinges used in free standing appliances are self-balancing. The right and left hinges are different and
are easy to fit/remove compared to those used in previous platforms. They are located between the wash
compartment (rack) and the plastic support.
Note.: The hinges of built-in and free-standing appliances are not interchangeable.
Service Manual
Manual LFF 825 IT/HA
Edition
2008.04.01
14
Language
English