Ariston NRA 640 C AUS Safety devices, Pan sensor, Residual heat indicators, Safety switch, Buzzer

GB	•	Make sure that the base of the cookware is
		always clean and dry, in order to fully utilise and
		extend the life of both the cooking zones and the
		cookware.
	•	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

off automatically and F 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	9
2	8
3	7
4	6
5	5
6	4
7	3
8	2
9	1

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.

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