19
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
(Tb)
from these two tests will
determine the maximum frequency for future service intervals.
Result of 6-8 week tests
Result of 12-15 week tests
Next service interval
< 1 °C
< 1 °C
9 - 12 weeks
> 1 °C
< 1 °C
9 - 12 weeks
< 1 °C
> 1 °C
9 - 12 weeks
> 1 °C
> 1 °C
6 - 9 weeks
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.