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MAINTENANCE REQUIREMENTS
12
TEMPERATURE PRESSURE RELIEF VALVE
This valve is near the top of the water
heater and is essential for its safe
operation. It is possible for the valve to
release a little water through the drain line
during each heating period. This occurs as
the water is heated and expands by
approximately 1/50 of its volume.
Continuous leakage of water from the valve
and its drain line may indicate a problem
with the water heater (refer to
“Temperature Pressure Relief Valve
Running” on page 18).
Warning: Never block the outlet of this
valve or its drain line for any reason.
Operate the easing lever on the
temperature pressure relief valve once
every six months. Refer to “Minor
Maintenance Every Six Months” on
page 11. It is very important the lever is
raised and lowered gently.
DANGER: Failure to do this may result
in the water heater cylinder failing, or under
certain circumstances, exploding.
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.
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 to arrange for an
inspection.
The temperature pressure 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 Supplies” on page 13).
lift until water
flows from the
drain line –
lower gently
drain
line
water
heater
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