Anode & tank inspection
A sacrificial magnesium anode is fitted to the heating element of this product.
It is normal for this to break down overtime as this helps to prevent other parts of
the tank/element from doing likewise.
Once the anode is significantly eroded it will no longer offer protection to the tank
/element.
In order to prolong the life of the heater it is recommended that the anode is inspected
at least annually (more often in known water quality problem areas) and replaced as
necessary.
To inspect/replace the anode, the heater must first be drained, and the heating
element removed (see relevant sections in this manual).
While the element is removed, the inside of the tank should be inspected, a torch may
be necessary, to check for signs of rusting anywhere on the inside of the tank lining. If
the element is found to be sound but rust is present inside the unit this may be a sign
of the enamel lining of the tank failing, and further investigation should be undertaken
before re-commissioning the unit. Contact the Hyco technical support on 01924 225200
for further advise.
Safety valve inspection
The pressure & temperature valve and the pressure (expansion) relief valves are
important safety features of the heater and should be tested periodically to ensure
correct functioning. To test the valves, twist the caps and check that water flows freely.
The tundish will allow for visual confirmation that water is flowing during the test.
Pressure reducing valve maintenance
Isolate the water supply to the pressure reducing valve. Unscrew the plastic cap of the
pressure reducing valve and remove the complete mechanism from the brass housing
of the valve.
Check there is no debris or grit build in the wire mesh and remove by rinsing as
required. Replace the mechanism into the brass housing and then recommission
the heater (see relevant sections in this manual). Particular attention should be given
to ensure the mechanism has been seated correctly into the brass housing and a sound
seal has been made.
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