Descaling/Cleaning The Tank - Buderus SU54/5 Notice D'installation Et D'entretien

9
Maintenance
▶ Remove the handhole cover [3], magnesium anode [5] and handhole
cover seal [4].
Fig. 17 Removing the cleanout cover SU54/5
[1] PS top cover
[2] Hex bolts
[3] Handhole cover
[4] Handhole cover gasket
[5] Magnesium anodes
[6] Inspection port
Fig. 18 Removing the cleanout cover SU80/5, SU100/5
[1] Cleanout cover shroud
[2] Hex bolts
[3] Handhole cover
[4] Magnesium anode
[5] Handhole cover gasket
[6] Inspection port
14
9.2
▶ Check the DHW tank interior for scale deposits (calcium).
1
Should limescale be discovered inside the DHW tank, proceed as
follows:
2
▶ Hose down the inside of the DHW tank with a "high-pressure" (approx.
58 – 72.5 psi (4 - 5 bar) gauge pressure) cold water jet.
You can increase the cleaning effect by heating up the heat exchanger
3
in the drained tank before cleaning. The thermal shock effect releases
scale deposits more easily from the coil-type heat exchanger.
▶ Use a wet & dry vacuum cleaner with plastic suction hose to remove
the residues.
4
Should thick limescale be discovered inside the DHW tank, it can be
removed chemically. We recommend that you have a qualified
5
contractor carry out the chemical cleaning operation.
6
6 720 801 769-07.1ITL
Fig. 19 Hose down the inside of the tank as shown in the example
6 720 805 397-09.1ITL

Descaling/cleaning the tank

NOTICE: Risk of tank damage due to damaged enamel.
▶ Never use hard objects or tools with sharp edges to
clean the interior of the tank
SU80/5, SU100/5
SU54.5 | SU80.5 | SU100.5 – 6 720 819 292 (2017/11)