7 7
I N - S E R V I C E T E S T S
P U R P O S E
The purpose of in-service tests is to regularly monitor and
record the performance of the thermostatic mixing valve.
Deterioration in performance can indicate the need for
service work on the valve and⁄ or the water supplies.
P R O C E D U R E
1. Carry out the procedure 2. (a) to (e) on page 76 using
the same measuring equipment, or equipment to the same
specifications.
2. If the mixed water temperature has changed significantly
from the previous test results (e.g. > 1 K), record the chan-
ge and before re-adjusting the mixed water temperature
check:
a) that any in-line or integral strainers are clean
b) any in-line or integral check valves or other anti-
backsiphonage devices are in good working order
c) any isolating valves are fully open
3. With an acceptable mixed water temperature, complete
the procedure 2. (a) to (e) on page 76.
4. If at step 2. (e) on page 76 the final mixed water tempe-
rature is greater than the values in Table A and ⁄ or the
maximum temperature exceeds the corresponding value
from the previous test results by more than about 2 K, the
need for service work is indicated.
NOTE: In-service tests should be carried out with a fre-
quency which identifies a need for service work before
an unsafe water temperature can result. In the absence
of any other instruction or guidance, the procedure de-
scribed in „Frequency of in-service tests“ may be used.
F R E Q U E N C Y O F I N - S E R V I C E T E S T S
T M V 3 *
G E N E R A L
In the absence of any other instruction or guidance on the
means of determining the appropriate frequency of in-service
testing, the following procedure may be used:
1. 6 to 8 weeks after commissioning carry out the tests given
in 2. on page 76.
2. 12 to 15 weeks after commissioning carry out the tests
given in 2. on page 76.
3. Depending on the results of 1. and 4. several possibilities
exist:
a) If no significant changes (e.g. ≤ 1 K) in mixed water
temperatures are recorded between commissioning
and 1., or between commissioning and 4. the next
in-service test can be deferred to 24 to 28 weeks
after commissioning.
b) If small changes (e.g. 1 to 2 K) in mixed water
temperatures are recorded in only one of these
periods, necessitating adjustment of the mixed
water temperature, then the next in-service test can
be deferred to 24 to 28 weeks after commissioning.
c) If small changes (e.g. 1 to 2 K) in mixed water
temperatures are recorded in both of these peri-
ods, necessitating adjustment of the mixed water
temperature, then the next in-service test should be
carried out at 18 to 21 weeks after commissioning.
d) If significant changes (e.g. > 2 K) in mixed water tem-
peratures are recorded in either of these periods,
necessitating service work, then the next in-service
test should be carried out at 18 to 21 weeks after
commissioning.
4. The general principle to be observed after the first 2 or
3 in-service tests is that the 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.
* T M V 2 : T H E F R E Q U E N C Y O F P E R F O R -
M I N G T H E I N - S E R V I C E T E S T S I S 1 Y E A R
M A X I M U M .
Summary of Contents for AXOR Massaud Series
Page 25: ...2 5 64 66 42 C 65 C 180 180 60...
Page 27: ...2 7 64 66 42 65 180 60...
Page 43: ...4 3 64 66 42 C 65 C 180 180 60...
Page 55: ...5 5 64 66 42 C 65 C 180 180 60...
Page 58: ...5 8 64 66 42 65 180 180 60...
Page 60: ...6 0 SW 4 mm 5 Nm 2 3 1 Montage 1 2 1 2 2 4 3 5 6 1 2 mm X 11 X 01800180...
Page 64: ...6 4 Safety Function Bedienung 7 8a 8b SW 2 mm 4 Nm SW 2 mm 4 Nm 1 2 40 C...
Page 79: ...7 9...