Maintenance
In service tests should be conducted regularly to monitor and record the performance of the valve.
Deterioration in performance can indicate the need for servicing of the valve and/or water supply.
If, during these tests, the mixed water temperature has changed significantly from the previous
test results, record the change before re-adjusting the mixed water temperature. If the final mixed
water temperature is greater than the permitted values, Verify details quoted in the Installation and
Commissioning sections of this manual and that service work is required.
The following actions are recommended at least every 12 months, or more frequently if the need
arises, and that the following steps are checked to maintain optimum valve performance.
With reference to the exploded diagram on page 6:
1) On the Caleffi 5213 series valves, the inlet conic filters (12) on both the hot and cold water
supplies can be removed for cleaning by unscrewing the inlet union nuts and carefully
pulling apart the connecting piping.
2) The built in check valves (11) on the Caleffi 5213 series valves can be accessed in a similar
way to 1) to ensure freedom of operation and correct operation.
3) If service is required, the internal components of the valve can be disassembled for
cleaning and de-scaling:
a) Remove the cap of the valve (1) and the locking nut (2).
b) Remove the upper body (3) using a suitable spanner.
c) Remove parts 5-7 noting the correct orientation.
d) Remove all signs of scale and dirt from the internal part using a suitable de-scaling
solution.
e) Re-assemble all the components.
Once the above servicing is performed follow the commissioning details in the previous section
ensuring that a suitably accurate thermometer is used.
Should the valve still not function correctly, it may be necessary to replace the thermal element
or other components. Refer to spare part kits and contact Caleffi Technical Support for details
and advice.
Spare parts
With reference to the exploded diagram, the spare parts are available on request for Caleffi 5213
series valves, see table on page 7.
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