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13 System inspection and maintenance11326 720 642 623-71.1o6 720 642 623-72.1oFig. 75 Removing the cleanout cover.You can obtain sealant ropes from your localBuderus wholesaler.B Clean flue gas baffles with the cleaning brushes.B Insert the flue gas baffle plates in the flue gas passages( Chapter 7.8.5, page 29).B Fasten cleanout cover and tighten the screws evenly.B Close the burner door and tighten the screws evenly.B Fold the rear section thermal insulation down and pulltogether under the flue outlet using the spring hook( Fig. 76, [1]).Fig. 76 Pull rear section thermal insulation togetherB Hang the bottom rear boiler panel sections on the leftand right into the slots in the folded edge of the upperrear boiler panel and the side panel and screw theconnecting plate below the flue outlet onto the bottomrear boiler sections.13.4 Wet-cleaning the boilerWhen wet-cleaning, pick the cleaning agent based on thelevel of contamination.Proceed with wet cleaning in the same order as describedfor cleaning with cleaning brushes ( Chapter 13.3,page 48).For wet-cleaning (chemical cleaning),observe the operating instructions of therelevant cleaning equipment and cleaningagent. It may be necessary to vary the wetcleaningprocess from that described here.B Select a cleaning agent that is appropriate for the typeof contamination (soot or encrustation).B Cover the control panel with foil to prevent penetrationby the cleaning agent.B Spray cleaning agent evenly from the top into the fluegas passagesB Heat up the boiler to a boiler water temperature of atleast 158°F (70°C).B Brush out the heat exchanger heater.50Logano G515 - Subject to technical modifications