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Maintenance
General
the Mira Select Flex thermostatic mixing valve
is designed to need only minimal maintenance
in normal use. the only serviceable parts are the
inlet filters which should be checked and cleaned
every 12 months. if a malfunction occurs with the
thermostatic cartridge then this will necessitate a
complete cartridge replacement.
Note! the cartridge contains no internally
serviceable parts.
if you require a Mira trained engineer or agent,
refer to section: 'Customer Service'.
Lubricants
Silicone based lubricants must only be used on
the rubber seals.
Caution! oil based or other lubricant types may
cause rapid deterioration of seals.
Cleaning
the chrome plated parts should be cleaned using
a mild washing up detergent or soap solution,
rinsed and then wiped dry with a soft cloth.
Warning! Many household cleaners contain
abrasive and chemical substances, and should not
be used for cleaning plated or plastic fittings.
Do not use descalents on this product.
In-service Tests
the principal means for determining the continuing
satisfactory performance of the mixing valve is the
in-service test.
Follow the procedure detailed in the flow diagram
"in-service test Procedure".
Planned Maintenance
Malfunction of thermostatic mixing valves is
almost always progressive in nature and will
be detected by the use of proper temperature
checking and maintenance routines.
We recommend a preventative maintenance
procedure based on site conditions and the risk
to the user. all results must be recorded in a log
book.
Healthcare
healthcare applications are hospitals, aged
person facilities, residential care homes, etc. and
any other application where the user is similarly
at risk.
Ultimately, the user or attendant must exercise
diligence to make sure that the delivery of warm
water is at a stable, safe temperature. this is
particularly important in healthcare procedures,
such as supervised bathing where patients
are unable to respond immediately to unsafe
temperatures.
irrespective of supply and usage conditions or the
evidence of in-service tests, critical components
should be replaced at intervals of no more than
5 years.
Note! during the replacement of critical
components, it may be necessary to replace
other non-critical components.
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