Maintenance; General Instructions; Safety Valve Or Safety Unit; Cleaning The Casing - DeDietrich BPB 150 Installation, User And Service Manual

8

Maintenance

8.1

General instructions

8.2

Safety valve or safety unit

8.3

Cleaning the casing

8.4

Checking the magnesium anode

Fig.12
Ø > 15 mm =
Ø < 15 mm =
8.5

Removing limescale

300027336 - v06 - 13062019
Caution
Maintenance operations must be completed by a qualified
installer.
Use only genuine spare parts.
1. The safety valve or unit on the domestic cold water inlet must be
operated at least once a month in order to ensure that it works
properly and take precautions against possible pressure surges which
would damage the domestic hot water tank.
Warning
Failure to follow this maintenance requirement may lead to the
deterioration of the domestic hot water tank and void its warranty.
1. Clean the outside of appliances using a damp cloth and a mild
detergent.
The magnesium anode must be checked at least every 2 years After the
first check and in light of the degree of wear of the anode, it is necessary
to determine the frequency of future checks.
1. Remove the inspection hatches.
Important
Descale the DHW tank if necessary.
7
2. Measure the diameter of the anode.
Replace the anode if its diameter is less than 15 mm.
3. Reassemble the anode/inspection hatch unit.
For more information, see
Remove the inspection hatches, page 22
Putting the inspection hatches back in place, page 22
MW-C003699-4
In hard water regions, we recommend annual descaling in order to
maintain performance.
1. Remove the inspection hatches.
2. Check the magnesium anode each time the hatch is opened.
3. Remove limescale deposits in the form of sludge or strips from the
bottom of the tank. However, do not touch the limescale adhering to
the walls of the tank as it provides effective protection against
corrosion and improves the insulation of the domestic hot water tank.
4. Remove limescale deposits from the exchanger to guarantee its
performance.
5. Remount the unit.
For more information, see
Remove the inspection hatches, page 22
Checking the magnesium anode, page 21
Putting the inspection hatches back in place, page 22
8 Maintenance
BPB 150...501 21