Mira Element Thermostatic Mixer Installation And User Manual page 33

Measure and record supply
temperatures 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
specification?
Carry out a performance check. Refer
to the commissioning procedure.
Has the blend
temperature changed
by more than 2°C from
previous recorded
Note! All measurements and results should be recorded in the Log Book.
Start
(Tb) and flow rate.
No
value (Tb) ?
No
Finish
Flow Diagram, In-service Test Procedure
Check and clean checkvalves,
Yes
strainers and outlet.
Measure and record blend
temperature
Yes
Yes
Refer to section: 'Fault
Carry out the commissioning
33
(Tb) and flow rate.
Has flow rate
improved?
No
Diagnosis'.
procedure.