28
29
2. if the temperature has changed significantly from the last
test results follow the next steps:
a. record the change
b. check if the filters are clogged and clean them
accordingly (refer to section ‘maintenance,
filter cleaning instructions’)
c. check that the check valves located in the flexible
hoses are in good working conditions.
replace the flexible hose\s if necessary.
d. if the mixed water temperature still differs
significantly, re adjust the mixed water
temperature (refer to section ‘adjusting the mixed
water temperature’).
3. if the temperature has not changed significantly,
complete the procedure [commissioning, step 4 (d) to (f)]
FUTURE
IN-SERVICE
INTERVAL
REQUIRED
12-15 WEEKS AFTER
COMMISSIONING
TEST
6-8 WEEKS AFTER
COMMISSIONING
TEST
12-16 weeks
≤
1 c
˚
≤
1 c
˚
12-16 weeks
≤
1 c
˚
1
c
˚
< t < 2
c
˚
12-16 weeks
1
c
˚
< t < 2
c
˚
≤
1 c
˚
6-9 weeks
1
c
˚
< t < 2
c
˚
1
c
˚
< t < 2
c
˚
6-9 weeks
≤
2 c
˚
≤
2 c
˚
note: intervals of in-service tests can be set to the
maximum specified in this table following 2-3 in-test
results with a change in the mixed water temperature no
larger than 1 c
˚
.
Commercial
TEST
FREQUENCY
final mixed water temperature
every 6 month
in-service test procedure
every 12 month
IN-SERVICE TESTS FREQUENCY
Healthcare
the in-service tests should be followed 6 to 8 weeks and 12-15
weeks after commissioning.
the results of these two tests combined, determines the
frequency for future in-service tests as follows:
TYPE 3 VALVES INFoRMATIoN
TYPE 3 VALVES INFoRMATIoN
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