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Since the installed supply conditions are likely to be different from those applied in the laboratory tests, a simple test
should be carry out on each mixer at commissioning to provide a performance reference point for future in-service
tests. Check the following in all cases to ensure the correct performance of the thermostatic mixer:
• the designation of the thermostatic tap matches the
intended application.
• the supply pressures and temperatures are within
the range of operating pressures and temperatures
for the designation of the valve.
• the supply temperatures are within the range
permitted for the tap and by guidance information
on the prevention of Legionella etc.
It is important to record the testing done during the commissioning and also to record the temperature of the hot
and cold water supplies and the temperature of the mixed water at the maximum setting.
Upon completion of the installation, the valve should be tested and commissioned as per the procedure outlined
below or as specified by the local authority. The entire procedure should be read through thoroughly prior to
the commissioning of the valve. A calibrated digital thermometer having rapid response time with maximum
temperature hold will be required to check and set the outlet mixed temperature of the mixer.
To test the temperature, open the valve and allow mixed heated water to flow for at least 60 seconds to stabalise
temperature before taking a reading at outlet with a digital thermometer. The flow rate should be at least 2L/min.
The temperature should be taken close to the mixer’s outlet and if the outlet temperature requires adjustment then
follow the Temperature Adjustment steps outlined on page 16.
commissioning & in-service tests
The ENWARE AQUABLEND SQX Thermostatic Mixing Valve will only require minimal preventative maintenance work to
ensure it operates at its optimum level of performance. The valve should be commissioned and serviced annually, unless
the installed conditions dictate more frequent servicing is necessary.
ANNUAL MAINTENANCE PROCEDURE
Every 12 months the ENWARE AQUABLEND SQX
thermostatic Mixer should be inspected and tested. The
valve should be given a light wipe down of the external
surface. The valve and surrounding area should be
inspected for leaks or water damage and appropriate
action taken if required.
Ensure a clean dry work area is available. Firstly isolate
the hot and cold supplies to the AQUABLEND SQX
THERMOSTATIC mixing valve by closing the inlet ball valves
found at the base of the mixer. During the annual service
the SQX Check valve/mesh strainer assemblies need to be
removed and cleaned, as directed in Servicing the Mixer
Steps 1-3 below.
A thermal shut down test is performed and the
temperature is reset as required. If the valve fails to shut
down or fails to maintain its set temperature then refer
to Troubleshooting section on page 24
.
FIVE YEAR MAINTENANCE PROCEDURE
Every five years the ENWARE AQUABLEND SQX
thermostatic Mixer needs to have a full service carried out.
This service consists of the same procedure as the ‘Annual
maintenance procedure’, and in addition the AQUABLEND
SQX THERMOSTATIC mixer Cartridge must be replaced, as
directed in the section below -
Servicing the Mixer.
After replacing the thermostatic mixer Cartridge, a thermal
shut down test is performed and the temperature re set as
required. If the valve fails to shut down or fails to maintain
its set temperature then refer to Troubleshooting section
on page 24
.
Once the 5 yearly maintenance procedure is complete,
the ENWARE AQUABLEND SQX thermostatic Mixer should
then be commissioned as per instructions below.
maintenance
Summary of Contents for AQUABLEND SQX ATM606
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