Safety Devices - Ariston NRA 640 B Operating Instructions Manual

• Avoid using the same cookware which has been
used on gas burners: the heat concentration on gas
burners may distort the base of the pan, causing it
not to adhere correctly.

Safety devices

Pan sensor
Each cooking zone is equipped with a pan sensor
device. The hotplate only emits heat when a pan with
suitable measurements for the cooking zone is placed
on it. If the indicator light is flashing, it may indicate:
• An incompatible pan
• A pan whose diameter is too small
• The pan has been removed from the hotplate.
Residual heat indicators
Each cooking zone is equipped with a residual heat
indicator. This indicator signals which cooking zones
are still at a high temperature. If the power display
shows , the cooking zone is still hot. It is possible,
for example, to keep a dish warm or melt butter or
chocolate. As the cooking zone cools, the power
display will show . The display switches off when the
cooking zone has cooled sufficiently.
Overheating protection
If the electronic elements overheat, the hob switches
F
off automatically and appears on the display,
followed by a flashing number. When the temperature
has reached a suitable level, this message disappears
and the hob may be used again.
Safety switch
The appliance has a safety switch which automatically
switches the cooking zones off after they have been
in operation for a certain amount of time at a particular
power level. When the safety switch has been
triggered, the display shows "0".
For example: the right rear hotplate is set to 5 and will
switch off after 5 hours of continuous operation, while
the front left hotplate is set to 2 and will switch off after
8 hours.
Power level Maximum operating time in hours
1
2
3
4
5
6
7
8
9
Buzzer
This can also indicate several irregularities:
• An object (a pan, cutlery, etc.) has been placed on
the control panel for more than 10 seconds.
• Something has been spilt on the control panel.
• A button has been pressed for too long. All of the
above situations may cause the buzzer to sound.
Remove the cause of the malfunction to stop the
buzzer. If the cause of the problem is not removed,
the buzzer will keep sounding and the hob will
switch off.
Extendable cooking zones
Certain models are fitted with extendable cooking
zones. These may be circular or oval and may vary
in their extensibility (they may be double or triple
hotplates). A list of controls is given below (these
controls are only present in models with the extendable
cooking zone option).
Circular extendable hotplate
DOUBLE
HOTPLATE ON
indicator light
DOUBLE
HOTPLATE ON
button
• DOUBLE HOTPLATE ON button switches on the
double hotplate (see Start-up and use).
• DOUBLE HOTPLATE ON indicator light shows the
double hotplate has been switched on.
GB
9
8
7
6
5
4
3
2
1
13