18
MAINTENANCE
WARNING Electrocution
Before any work on the appliance, disconnect all poles of the
appliance from the power supply.
Dismantle the appliance for maintenance work.
WARNING Burns
Hot water may escape during draining.
To drain the appliance
1. Isolate the supply and run water until the water discharging from the
tap is cold.
2. Leave the hot tap open.
3. Close the cold feed isolation valve.
4. Open the discharge safety valve and allow the water to drain from the
appliance.
5. When the flow stops disconnect the appliance from the hot and cold
feed pipe connections.
Material loses
NOTE. Some water will drain from the pipe so ensure suitable
method for catching the water is used.
Water contains micro-impurity and mineral substances.
Deposits will occur on the bottom of the water heater inner vessel. The water
heater should be emptied to remove the deposits.
Generally, the heater should be cleaned once per year. For areas of poor water
quality or high levels of water hardness, the cleaning should be conducted more
frequently.
The unit is fitted with a magnesium anode. This should be replaced when worn.
The anode should only be replaced by trained service engineer.
