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Maintenance | 21
Use only authentic spares and accessories.
Order spares from the list supplied with the appliance.
Substitute dismantled joints and o-rings with new ones.
Only the following lubricants must be used:
On hydraulic parts: Unisilikon L 641 (8 709 918 413)
Threaded joints: HFt 1 v 5 (8 709 918 010).
9.1 Periodic maintenance tasks
Functional checks
Ensure that all safety, regulatory and checking elements
are in good working order.
Heat exchanger
Inspect the heat exchanger.
▶If it is dirty:
Dismantle the chamber and remove the regulator.
Clean the chamber with a pressurized water jet.
If the dirt resists: soak soiled parts in hot water with
detergent and clean carefully.
If necessary: de-scale the interior of the heat exchanger
and connection tubes.
Reassemble the heat exchanger using new joints.
Remount the regulator on its support.
Burner
Inspect the burner annually and clean as necessary.
If it is very dirty (grease, soot): Dismantle the burner and
soak it in hot water with detergent and clean it carefully.
Water filter
Close the water inlet.
Dismantle the cold water inlet pipe.
Replace the water filter.
9.2 Startup after maintenance
Re-open all connections.
Read chapter 3 "Use" and/or chapter 8 "Gas regulation".
Inspect the gas regulator (burner pressure).
Check the exhaust tubes in the front of chimney
Ensure there are no gas leaks.
9.3 Changing fuses (control box)
If the burner state button (Fig. 3, [4]) does not display a
luminous signal when the appliance is connected, a fuse has
probably blown.
Proceed as follows:
Remove the fuses from the box (Fig. 22, [1]) and remove
cap.
Fig. 22 Control box
Replace fuses (Fig. 22, [2]).
If the problem persists, replace the control box.
9.4 Temperature range selection
Appliance temperature range is set to 35 °C - 60 °C. Placing
jumper JP7, temperature range changes to 38 °C - 50 °C.
Fig. 23 Control box
WARNING:
Before returning the appliance into use, fit
the water filter.
6720607047-04.3V
21


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