Maintenance; Sacrificial Anode; Draining; Cleaning & Decalcification - Panasonic PAW-TEXXE3 Manuel D'installation Et D'entretien

6.

Maintenance

6.1 Sacrificial Anode

The magnesium sacrificial anode offers minimum protection for possible cracks in the
enameling in accordance with DIN 4753. An initial inspection should be carried out
after two years of operation at the latest.
CAUTION! CORROSION DAMAGE!
A worn anode can lead to early corrosion damage. Depending on the local
water qualities, the sacrificial anode should be checked at least every two
years, preferably every year, and replaced immediately if necessary.
The potable water must have a minimum conductivity of 100 µS/cm. Anode
protection cannot be guaranteed otherwise.
If the anode is more than 2/3 warped, it must be replaced immediately. The heater
must be depressurized for this. When replacing the anode, pay attention to the
electrical connections.

6.2 Draining

Before cleaning or carrying out repair work, disconnect the heater from the water
network and drain it. If necessary, also drain the heating coil.
6.3 Cleaning & Decalcification
The calcification rate of the hot water heater depends on the utilization time,
operating temperature and the water hardness.
CAUTION! WATER DAMAGE!
A faulty or corroded seal can lead to water damage. Check the seal of the
cleaning flange and replace it if necessary.
Heating surfaces that are calcified reduce the thermal output and the potable water
content of the heater. The energy required and heat-up times are increased. The
heater should therefore be decalcified at regular intervals; with water that has a low
calcium content, deposited scum should be washed off regularly.

6.4 Recommissioning

After cleaning or repair work, rinse the heater out thoroughly. Bleed the individual
hydraulic systems.
33
Aquarea Tank
GB
7.

Troubleshooting and Fault Remedy

Clogged connections
Fault: With copper pipe installations, adverse relationships through electro-chemical
processes between sacrificial anode and the pipe material can cause connections to
clog.
Remedy: Electric isolation of the copper pipe installation and the heater using
isolating screw connections.
Odor impairment and darkened coloring of the heated water
Fault: During operation, strong and unpleasant odors are given off by the water
pipes. This is usually due to a build-up of hydrogen sulfide caused by sulfate-reducing
bacteria. These are found in water that is very low in oxygen and feed on the oxygen
produced by the anode. This process poses no health risk.
Remedy: Clean the vessel, replace the sacrificial anode and operate at > 60 °C. If no
change is detected, replace the magnesium sacrificial anode with an external current
anode.
The user shall bear the costs of this alteration.
Notes
GB
Aquarea Tank
34