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Function:
check inlet pipework temperature for correct function of checkvalves, and
maintain/renew as necessary. Check and clean strainer screens as appropriate.
Lubricate accessible seals when necessary using
silicone-only based lubricant
.
Blend Temperature:
check for correct blend setting and maximum preset temperature.
Reset as necessary (Refer to
COMMISSIONING
).
Performance:
check blend stability against known datum (e.g. commissioning check)
for an induced pressure or flow change. Renew the Thermostatic cartridge where
necessary.
Service Contracts
To ensure your Rada/Mira products function correctly and give continued safe
performance Service Contracts can be undertaken (subject to site survey).
All service contract work is carried out by fully trained Rada/Mira Service Engineers
who carry a comprehensive range of genuine spares. For details on arranging a
Service Contract please contact Aftersales/Service.
In-service Tests
The principle means for determining the continuing stisfactory performance of the
shower control is the in-service test.
The in-service test procedure is shown in Figure 4. This should be carried out at both
6 to 8 weeks and 12 to 15 weeks after commissioning the shower control.The results
of these testsare used to determine when, after initial commissioning, the in-service
test is next repeated.
Frequency of In-service Tests
The 'Guide to in-service test frequency' is shown in Figure 5 The in-service test
results over the first 28 weeks after commissioning determine the ongoing frequency
of testing shown in the right hand boxes of the guide.
Whenever a Thermostatic cartridge is replaced, the in-service test frequency should
be reassessed as if it were a new valve.
Note!
In-service tests should be carried out with a frequency, which identifies a need
for service work before an unsafe water temperature can result. The general principal
to be observed after the first 2 or 3 in-service tests is that, intervals of future tests
should be set to those which previous tests have shown can be achieved with no
more than a small change in mixed water temperature. But in no case longer than 12
months.
Performance Check
Six-monthly
Exercising the Thermostat:
If the control has not been in regular or recent use the
thermostat should be exercised before any other checking. Where user adjustment of
the blend temperature is available the exercising of the thermostat can be achieved
as described in
COMMISIONING.
For shower control units with locked temperature
control it is necessary to isolate and restore each supply in turn a few times.