Mira Select Flex - Maintenance

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5. All connections and thermostatic mixing valve
body are watertight.
6.
Operate the outlet flow divertor lever and
check:
(a)
Flow rate is sufcient for purpose (low
pressure supplies may require removal
of ow regulators).
(b) Te m p e r a t u r e ( s ) o b t a i n e d a r e
acceptable.
7. Exercise the thermostat (refer to section:
‘Commissioning, Exercising the
Thermostat’).
8.
Adjust the temperature of the mixed water in
accordance with the instructions in this manual
and the requirement of the application and
then carry out the following sequence:
(a)
Record the temperature, and pressures
if possible, of the hot and cold water
supplies.
(b) Record the temperature and ow rate of
the mixed water at the largest draw-off
ow rate.
(c) Record the temperature and ow rate of
the mixed water at a smaller draw-off ow
rate.
(d) Isolate the cold water supply to the
mixing valve and monitor the mixed water
temperature.
(e) Record the maximum temperature
achieved as a result of d. and the nal
temperature.
Note! The nal mixed water temperature
should not exceed the values shown in
the table below. Any higher temperatures
should only occur briey.
(f) Record the date, equipment, thermometer
etc. used for the measurements.
Application
Maximum Mixed
Water Temperature
Bidet 40°C
Shower 43°C
Washbasin 43°C
Bath (44°C ll) 46°C
Bath (46°C ll) 48°C
Maintenance
Planned maintenance for Type 3 Valves must
use the ‘In-Service Test’, at the frequency given
in the guide to in-service test frequency, and
should employ temperature testing, performance
log books and training as detailed in section:
‘Maintenance’.
Type 2 valves must use the ‘In-Service Test’ at a
frequency of not more than one year.