Thermal disinfection
The temperatures and corresponding times for disinfection of the
system must be selected according to the type of installation and
its intended use. To meet the requirements of the most recent world
legislation on this matter, the following criteria can generally be
followed:
T = 70°C for 10 minutes
T = 65°C for 15 minutes
T = 60°C for 30 minutes
Thermal disinfection is generally carried out at times when there is
less demand on the system, for example at night; this is to minimize
the risk of users being scalded. It is recommended to perform thermal
disinfection every day and at least once a week.
Maintenance
Tests are carried out while in service, to regularly monitor the
performance of the mixing valve, since any loss of performance may
indicate the need for maintenance of the valve and/or the system.
During these tests, if the temperature of the mixed water is found
to have changed significantly compared with previous tests, we
recommend referring to the sections on installation and commissioning
and carrying out maintenance.
We recommend carrying out the following checks periodically to ensure
that the valve continues to deliver optimum levels of performance. At
least every 12 months, or more frequently if required.
1) Check and clean the filters in the system
2) Check that any check valve installed at the inlet of the Caleffi valve
is functioning correctly, and there are no leaks caused by dirt.
3) Once the maintainable components have been checked, we
recommend following the commissioning procedure again.
On the system log book, record all operations carried out.
Functional faults
A special set of alarms has been fitted to help manage possible faults
that can occur in the device. Refer to the dedicated section of the
"Programming Manual" (code H0003581).
10 11
Buffer battery replacement procedure
If necessary, it is possible to replace the buffer battery removing the
low battery from its seat and inserting the new one without forcing.
Battery type CR2032.
Problem Cause Solution
Hot water supplied to cold water taps a) Inlet check valves not operating
correctly or seals worn/damaged
b) Check valves not tted
Replace damaged check valves
Install check valves
Mixed water temperature uctuations a) Incorrect inlet water temperatures
b) Inlet water supply failure
c) Bad commissioning
Restore inlet conditions to within valve specication range
Incorrect valve outlet ow rate a) Insufcient water supply
b) Inlet water temperature/pressure
uctuations
c) Adverse conditions due to other water
draw off points in the system
Stabilise supply conditions at the inlet
No valve outlet ow a) In-line strainers obstructed
b) Insufcient supply pressure
c) Dirt obstructing water ow through the
valve
Clean the strainers
Restore supply conditions
Remove dirt/scale from the valve
Seals
The screws are fitted for the installation of anti-tampering seals.
Troubleshooting
In normal operating conditions, Caleffi series 6000 hybrid electronic mixing valves provide outstanding performance. However, in special circumstances
when our maintenance schedule is not observed, the following problems may arise:
To Next Page
Loading...
Need help?
General
