Hotpoint GB 640.1 RX, GX 641 RX, GX 751 RTX, GA 630 RTX Replacing the Triple ring burner nozzles

2. unscrew the burers with a 7 mm wrench spanner. The

GB internal burner has a nozzle, the external burner has two (of the same size). Replace the nozzle with models suited to the new type of gas (see table 1).

3.replace all the components by repeating the steps in reverse order.

Replacing the Triple ring burner nozzles

1.Remove the pan supports and lift the burners out of their housing. The burner consists of two separate parts (see pictures).

2.Unscrew the nozzles using a 7 mm socket spanner. Replace the nozzles with models that are configured for use with the new type of gas (see Table 1). The two nozzles have the same hole diameter.

3.Replace all the components by completing the above operations in reverse order.

•Adjusting the burners’ primary air : Does not require adjusting.

•Setting the burners to minimum:

1.Turn the tap to the low flame position.

2.Remove the knob and adjust the adjustment screw, which is positioned in or next to the tap pin, until the flame is small but steady.

!In the event of single-control DRDA (DCDR) burners, adjustment can be performed by intervening on the 2 screws located near the tap pin (see picture).

3.Having adjusted the flame to the required low setting, while the burner is alight, quickly change the position of the knob from minimum to maximum and vice versa several times, checking that the flame does not go out.

4.Some appliances have a safety device (thermocouple) fitted. If the device fails to work when the burners are set to the low flame setting, increase this low flame setting using the adjusting screw.

5.Once the adjustment has been made, replace the seals on the by-passes using sealing wax or a similar substance.

6.In the event of discrete-adjustment knobs with LED visualisation, turn the knob to the minimum power setting them remove it and intervene on the adjustment screw located near the tap pin.

7.Minimum setting adjustment of the DRDA (DCDR) burner with discrete adjustment and LED visualisation:

•To adjust the outer ring, turn the knob anti- clockwise to the minimum power position.

•To adjust the minimum power setting of the inner ring, turn the knob clockwise to the minimum power position.

•Remove the knob and intervene on the adjustment screw located near the tap pin.

!If the appliance is connected to liquid gas, the regulation screw must be fastened as tightly as possible.

!Once this procedure is finished, replace the old rating sticker with one indicating the new type of gas used. Stickers are available from any of our Service Centres.

!Should the gas pressure used be different (or vary slightly) from the recommended pressure, a suitable pressure regulator must be fitted to the inlet pipe (in order to comply with current national regulations).

Total DRDA (DCDR) burner adjustment

Inner DRDA (DCDR) burner adjustment

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