Fagor Brandt HERAKLES LA3P 001UK-0306 Manual page 20

FUNCTION
Measurement of the cycling pump current and keeping of the power supply to solenoid
valve
The third and last filling step is carried out dynamically,
that is by supplying the cycling pump.
As soon as this pump starts, the various spraying circuits
of the appliance fill. The pump starts and due to the lack
of water, the current it absorbs varies rapidly.
The valve is supplied until the current consumed by the
cycling pump is stabilized. This is used for reaching a
level suited to the dishwasher needs at a precise moment
(even in case of overturned bowl).
Monitoring of the current consumed by the pump
Before definitely cutting off the power supply to solenoid
valve, the power board carries on monitoring the current
consumed by the cycling pump for the next 5 minutes.
This is used for topping up with water again, if need be, in
the case of a container that overturns, for example.
This water level management principle is used for having
very precise filling perfectly suited to the dishwasher needs (pump and hydraulic circuit, loading and
type of dishes, water pressure and inlet flow rate)
Safety devices and "security mode" of the filling
•
Level L1 not reached after 2' approximately:
The board supplies then the cycling pump and checks the current consumed.
- The latter greatly varies, as the hydraulic unit is empty
(tap closed, very low flow rate < 0.5 l/min, draining stick fallen)
► the cycle is stopped
► the warning light
► it is necessary to press the "start" key to restart it
- It is stable as the hydraulic unit is full (no detection as float blocked)
► the cycle carries on normally and the intake of water continues with the dynamic filling and
the monitoring of the current consumed by the pump
.
•
Level L1 reached within 15" approximately:
Hydraulic unit not empty at cycle beginning, following incorrect draining
- the current cycle is modified to perform draining alone again to L0 +10"
- this draining will be performed only once before repeating the first filling phase
- 20 -
lights on (fault d01)
CU3P-CDC-003-02/05
LA3P-HERAKLES-001UK-0306
THE HERAKLES DISHWASHER
Spray arm
SV
Power
board
Float
FBS
Current
analysis
Cycling arm
SV
Power
board
Float
FBS
Current
analysis
Technical Training
Cycling
Filters
pump
Heating
tunnel
Cycling
Filters
pump
Heating
tunnel