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Maintenance
12. Air needs to be bled from the heat pump water lines
to ensure the circulating pump can operate effectively.
First ensure the drainage tube connected to the small
drain valve on the circulating water outlet connection is
pointing away from any electrical components. Bleed air
from the water lines by twisting the knob on the valve
anti-clockwise. Once water has begun flowing freely from
the drainage tube for 10 seconds or more, twist the knob
clockwise to stop the valve from draining.
air bleed
inlet
13. Clean all filters in the hot water system including the
tempering valve filters, and any filters that may be located
on individual fixtures as they may have become blocked
by debris during the process of flushing and draining of
the hot water system.
14. Check that all isolation valves that are designed to be
open during normal operation of the hot water system
are fully open. The tank MUST be full of hot water before
turning the power back on.
15. The power to the hot water system can now be turned on
at the switchboard.
Note: Since the water inside the storage tank will now be
cold, it may take some time for the water to return to its
optimum operating temperature. If hot water is needed
within 2-4 hrs, activate the electric heating manual mode to
produce the hot water more quickly (see page 6 for details).
Temperature and Pressure Relief valve (TPR valve)
The valve easing gear on the relief valve must be operated
gently at least once every 6 months. We recommend that this
relief valve be checked regularly to ensure it is not continually
leaking or that the discharge piping connected to the valve
is not blocked. If the valve continually leaks when the heat
pump is not operating, carefully operate the easing lever
as described in step 5 on the previous page. If the valve
continues to leak it is recommended to get it inspected and
replaced by an authorised person.
warning
Failure to operate the relief valve easing gear at least once
every six months may result in the hot water storage tank
failing or in extreme cases exploding. Continuous leakage
of the water from the valve may indicate a problem with
the hot water system.
valve
outlet
Anode replacement
Inside the storage tank is a sacrificial anode designed to
protect the vitreous enamel coated steel tank from corrosion.
The anode will slowly oxidise while protecting the steel tank
liner, reducing its effectiveness in protecting the tank from
rusting over time.
The anode must therefore be inspected and replaced (as
required) every 2 to 5 years depending on the supply water
quality, in order to keep the storage tank warranty valid. The
anode inspection and replacement must be conducted by
an authorised service person or plumber and be replaced by
a manufacturer authorised spare part, which can be sourced
from the Electrolux spare parts division (see contact details
in warranty section).
warning
If the hot water system is not used for two weeks or
more, a quantity of highly flammable hydrogen gas may
accumulate in the water heater. To dissipate this gas safely,
it is recommended that a hot tap be turned on for several
minutes or until discharge of gas ceases. Use a sink, basin,
or bath outlet, but not a dishwasher, clothes washer, or
other appliance. During this procedure, there must be no
smoking, open flame, or any electrical appliance operating
nearby. If hydrogen is discharged through the tap, it will
probably make an unusual sound as with air escaping.
Note: For the purposes of the above warning, "water heater"
is referring to the hot water storage tank which may also act
as a water heater when the electric heating manual mode is
activated via the boost button.
Kelvinator heat pump hot water system maintenance 9
storage tank
sacrificial
anode
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