Mira Select Flex Installation And User Manual page 26

Frequency of In-service Tests
Healthcare
Follow the procedure detailed in the flow diagram
"in-service test Procedure". this procedure must
be followed 6 to 8 weeks after commissioning
and 12 to 15 weeks after commissioning. the
recorded blend temperature
tests will determine the maximum frequency for
future service intervals.
result of
result of 6-8
12-15 week
week tests
< 1°c
> 1°c
< 1°c
> 1°c
the subsequent in-service test results should be
used as a guide, in conjunction with a suitable risk
assessment, to determine the schedule of future
in-service tests.
More regular temperature checks should be
made where increased risks are perceived, i.e.
patients are unable to immediately respond to an
increase in water temperature, by either shutting
the water off or removing themselves from contact
with the water.
Maintenance personnel should also make sure
that the staff are aware of the importance of
reporting temperature variations and when
detected, these should be recorded in the log
Book.
Commercial
check for correct blend setting every 6 months.
Follow the procedure detailed in the flow diagram
"in-service test Procedure", every 12 months.
(Tb)
from these two
next service
interval
tests
< 1°c 9 - 12 weeks
< 1°c 9 - 12 weeks
> 1°c 9 - 12 weeks
> 1°c 6 - 9 weeks
Flow Diagram, In-service Test Program
Measure and record supply
temperature and pressures. Make sure
that they are within valve specifications.
Measure and record blend
temperature
Has flow rate fallen
significantly or fallen
below minimum flow
no
carry out a performance check.
refer to the commissioning
procedure.
has the blend
temperature
changed by more
than 2°c from the
previous recorded
(Tb)
value
no
Finish
Note! all measurements and results should be
recorded in the log Book.
26
Start
and flow rate.
(Tb)
specification?
yes
check and clean non return
valve, strainers and outlet.
Measure and record blend
and flow rate.
(Tb)
temperature
Has flow rate
yes
improved?
no
yes
?
refer to section: 'Fault
Diagnosis'.
carry out the commissioning
procedure.