Triton ELINA, Инструкция по установке и эксплуатации

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Thermostatic bar mixer shower
15
IN-SERVICE TESTING
Maintenance of the unit is required to give
continued performance after installation and that
it continues to provide scald prevention.
Note: A thermostatic mixing valve in need of
maintenance can be undetectable in normal
use and only becomes apparent when a
disruption occurs in the hot or cold water supply
temperatures or pressures.
Purpose
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.
Procedure
Using the same measuring equipment or
equipment to the same specification as used
in the commissioning of the valve, adjust the
temperature of the mixed water in accordance
with the manufacturer’s instructions and the
requirement of the application. Carry out the
following sequence:
a) Record the temperature of the hot and cold
water supplies.
b) Record the temperature of the mixed water
at the largest draw-off flow rate.
c) Record the temperature of the mixed water
at a smaller draw-off flow rate, which shall be
measured.
If the mixed water temperature has changed
significantly from the previous test results
(e.g.> 1 K) 5), record the change and before
re-adjusting the mixed water temperature check
that:
a) that any in-line or integral strainers are clean,
b) any in-line or integral check valves or other
anti-back siphonage devices are in good
working order,
c) any isolating valves are fully open.
With an acceptable mixed water temperature,
complete the following procedure:
a) Record the temperature of the hot and cold
water supplies.
b) Record the temperature of the mixed water
at the largest draw-off flow rate.
c) Record the temperature of the mixed water
at a smaller draw-off flow rate, which shall be
measured.
d) Isolate the cold water supply to the
mixing valve and monitor the mixed water
temperature.
e) Record the maximum temperature achieved
as a result of (d) and the final stabilised
temperature.
f) Record the equipment, thermometer etc.
used for the measurements.
If at step (e) the final mixed water temperature
is greater than the values in Table 17 and /
or the maximum temperature exceeds the
corresponding value from the previous results by
more than about 2 K, the need for service work
is indicated
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. In the absence of any
other instruction or guidance, the procedure
described in Annex F of D 08 may be used.
Annex F of D 08 (informative)