AquaMAX EM50 Series - Manual (Page 11)

10
Warning: Exercise care when operating easing lever as water
discharged from the water heater may be of a very high temperature.
Warning: Exercise care to avoid any splashing of water, as water
discharged from the drain line will be hot. Stand clear of the drain line’s
point of discharge when operating the valve’s lever.
Danger: Failure to perform this procedure may result in the water
heater storage cylinder failing.
If water does not flow freely from the drain line when the lever is lifted, then
the water heater must be checked. Phone Aquamax Service or their
nearest Accredited Service Agent to arrange for an inspection.
The pressure temperature relief valve should be replaced at intervals not
exceeding five (5) years, or more frequently in areas where there is a high
incidence of water deposits (refer to “Water Chemistry” on page 11).
Expansion Control Valve (ECV)
In many areas, including South Australia, Western Australia and scaling
water areas, an ECV is fitted to the cold water supply line to the water
heater (refer to the “Cold Water Supply Plumbing Arrangement” diagram on
page 19). The ECV may discharge a small quantity of water from its drain
line during the heating period instead of the PTR valve on the water heater.
Operate the easing lever on the expansion control valve once every six
months. It is very important that you raise and lower the lever gently.
The expansion control valve should be checked for performance or
replaced at intervals not exceeding five (5) years, or more frequently in
areas where there is a high incidence of water deposits (refer to “Water
Chemistry” on page 11).
Anode
The anode installed in your water heater has been designed to slowly
dissipate whilst protecting the storage cylinder. If the hot water heater is not
used for two (2) weeks or more, a quantity of hydrogen gas, which is highly
flammable, 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 appliances
operating nearby. If hydrogen is discharged through the tap, it will probably
make an unusual sound similar to air escaping.