5.4.1 Checking and cleaning the combustion grate
❒ Open the insulating door and combustion chamber door
❒
Remove the firebrick from the burn-out opening
❒ Remove any dirt from the tilted grate using the furnace tool
5.4.2 Cleaning the measurement line of the underpressure controller
❒ Open the insulated door and remove the ash container from the boiler
➥ ⇨ See "Checking the fill level of the ash container and emptying if required"
[page 48]
❒ Remove the left and right screws on the front cover plate
❒
Slide the cover plate up and remove
Servicing the system
5
Maintenance work by technicians
Operating Instructions T4e | B1560520_en 61
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