Buderus Logalux SU200/5 8718543068 - Инструкция по эксплуатации - Страница 25

8

Environmental protection/disposal

SU120/5, SU160/5, SU200/5, SU200/5E – 6 720 801 756 (2012/06)

25

B

Depressurize the indirect coils.

B

Drain and blow out the indirect coils (

Æ

Fig. 19, page 104).

B

To prevent corrosion, dry out the interior and keep the inspection 
aperture covers open.

8

Environmental protection/disposal

Environmental protection is a fundamental principle of the 
Bosch Group.
Quality of products, efficiency and environmental protection are equally 
important objectives for us. All legislation pertaining to the environment 
is strictly observed.

Packaging

We are dedicated in adhering to country-specific disposal standards as 
they relate to packaging to ensure optimum recycling. All packaging 
materials are environmentally compatible and can be recycled.

Used appliances

Used appliances contain materials that should be recycled.
The assemblies are easy to separate and the types of plastic used are 
identified. This allows the various assemblies to be appropriately sorted 
for recycling or disposal.

9

Maintenance

B

Let the DHW cylinder cool down sufficiently prior to any maintenance 
work.

B

Carry out cleaning and maintenance procedures in the specified 
intervals.

B

Remedy all faults immediately.

B

Only use genuine spare parts.

9.1

Maintenance intervals

Service the appliance in accordance with throughput, operating 
temperature and water hardness (

Æ

Table 7, page 25).

The use of chlorinated DHW or a water softener unit reduce the service 
intervals. 

You can check the local water quality with your water supply utility.

Depending on the composition of the water, it can make sense to deviate 
from the reference values listed.

9.2

Maintenance work

9.2.1

Checking the safety valve

B

Check the safety valve annually.

9.2.2

Descaling/cleaning the DHW cylinder

B

Disconnect the DHW cylinder on the DHW side from the pipework.

B

Close the shut-off valves and isolate the immersion heater from the 
power supply (if installed) (

Æ

Fig. 18, page 104).

B

Drain the DHW cylinder (

Æ

Fig. 16 and 17, page 103).

B

Check the DHW cylinder interior for contamination (lime scale 
deposits, sediment).

B

In the case of soft water: 

Check the cylinder interior regularly and clean out any sediment 
deposits.

-or-

B

In the case of hard water or severe contamination:

Regularly descale the DHW cylinder in line with the actual amount of 
limescale using chemical cleaning methods (e.g. with a suitable 
descaling agent based on citric acid).

B

Clean out the DHW cylinder interior with a water jet 
(

Æ

Fig. 22, page 105).

B

Remove the residues with a wet & dry vacuum cleaner with plastic 
suction hose.

B

Close the inspection aperture with a new gasket 
(

Æ

Fig. 25, page 105).

B

Re-commission the DHW cylinder (

Æ

chapter 6, page 24).

9.2.3

Checking the magnesium anode

The magnesium anode is a sacrificial anode that is consumed when the 
DHW cylinder is in use.

We recommend that the protection current is measured annually using 
an anode tester (

Æ

Fig. 20, page 104). The anode tester is available as 

an accessory.

B

Shut off the cold water inlet.

B

Depressurize the DHW cylinder (

Æ

Fig. 16, page 103).

B

Install and test the magnesium anode (

Æ

Fig. 21 to Fig. 25, 

page 104).

B

Replace the magnesium anode if its diameter has been reduced to 
below 15 mm.

B

Check the transition resistance across the earth connection and the 
magnesium anode.

Water hardness in °dH

3 –  8.4

8.5 – 14

> 14

Calcium carbonate concentration 
in mol/ m³

0.6 – 1.5

1.6 – 2.5

> 2.5

Temperatures

Months

At a standard throughput (< cylinder content/24 h)

< 60 °C

24

21

15

60 – 70 °C

21

18

12

> 70 °C

15

12

6

At a higher throughput (> cylinder content/24 h)

< 60 °C

21

18

12

60 – 70 °C

18

15

9

> 70 °C

12

9

6

Table 7 Service intervals in months

In order to improve the cleaning effect, heat up the 
indirect coils prior to cleaning them with a water jet. The 
thermal shock effect separates deposits (e.g. lime scale 
build-up) more readily.

The DHW warranty is void if the magnesium anode is not 
correctly maintained.

Never bring the magnesium anode surface into contact 
with oil or grease.

B

Keep everything clean.