SERVICE MANUAL
ADVANCE OVENS
04/02/2020 126
This function is used to access the descaling cycle.
1. Press the descaling button.
2. Select time (30 - 480 min.) 120 min. default setting.
3. Warning SPRAY DESCALER (3 minutes).
4. Insert descaler in steam generator (rear section of the oven).
5. Confirm.
6. On completion END DESCALING displayed.
WARNING! The descaling function is performed by the SAT. All the relevant safety measures for
preventing accidents should be observed. Procedure involving chemical products.
The chemical product used must have a phosphoric acid base at a concentration of 35 ÷ 40 %. It may contain an
anti-foaming agent. A chemical concentration of approximately 10÷ 15% of the capacity should be used in the
boiler. This concentration depends on the degree of lime scale saturation and the effectiveness of the chemical
product. Please refer to the supplier for advice on the method of application.
When the over automatically detects an excess level of lime scale in the pipes, the text DESCALING flashes on the
display. The speed of the flash increases with the need for decaling, and when descaling is obligatory the message
is permanently lit and the boiler heating is blocked (at this point the oven only operates in convection mode).
17.12.5. LIME SCALE DETECTION
In any operating mode, if the TG probe reaches:
o 125 ºC
The message DESCALE is displayed in the upper text of the screen, and flashes every two seconds.
o 140 ºC
The message DESCALE is displayed in the upper text of the screen, and flashes every one second.
o 155 ºC
The message DESCALE is displayed in the upper text of the screen, and flashes every ½ second.
o 180 ºC
The message DESCALE is displayed continuously in the upper text of the screen, and the oven only
operates in Convection mode.
Once the message DESCALE has been displayed, it will not disappear until descaling takes place, even though the
TG temperature falls or if the oven is switched off. The message reappears when the oven is switched on.
17.12.6. PROCEDURE FOR DESCALING
To descale, go to the DESCALE function in the MENU option.
The message displayed is SELEC. TIME, descaling time between 30 and 480 minutes (120 default setting)
Wait until the user confirms the selection with the button on the wheel.
Phase 1 VAC operates for 3 minutes.
The message displayed is SPRAY DESCALER. Undo the side panel of the oven and access the steam
generator. Undo the descaling nut and pour the chemical product in the steam generator. Tighten the nut
after inserting the chemical product and confirm by pressing START.
Phase 2 VDV operates until reaching the maximum level, the boiler fills with descaler.
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