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TYPE 3 VALVES MAINTENANCE
Planned maintenance for type 3 valves should include the
‘in service tests’ procedure detailed below as well as the
procedure detailed in the general ‘maintenance’ section.
the thermostatic cartridge does not contain any serviceable
parts. therefore, if it malfunctions a full replacement of the
cartridge is required.
IN-SERVICE TESTS
General
the in service tests are meant to monitor and record the
continuing satisfactory performance of the thermostatic
mixing valve.
Procedure
1. carry out step 4 (a) to (c) in the ‘commissioning’ section.
make sure you are using the same equipment or
equivalent.
MAXIMUM STABILIZED TEMPERATURES RECORDED
DURING SITE TESTS
aPPlication
mixed Water temPerature c
˚
bidet
40°c max.
Washbasin
43°c max.
shower
43°c max.
TYPE 3 VALVES INFoRMATIoN
COMMISSIONING
1. check that the designation of the thermostatic mixing
valve matches the intended application (washbasin)
2. check that the supply pressures are within the range of
operating pressures for the designation of the valve
3. check that the supply temperatures are within the range
permitted for the valve and by guidance information on the
prevention of legionella etc.
4. adjust the temperature of the mixed water in accordance
with the instructions in this manual and the requirement of
the application and then 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
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 mixed temperature
note: the final mixed water temperature should
not exceed the values presented in the below table
f) record the date, equipment, thermometer etc. used for
the measurements
TYPE 3 VALVES INFoRMATIoN
Содержание 3515050
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