CALEFFI 521312TM, Installation, Commissioning And Servicing Instructions

Page: 10 / 20

Maintenance
In service tests should be carried out regularly to monitor and record the performance of the
valve in accordance with AS 4032.3. 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, we recommend that the details quoted in Installation and Commissioning sections are
verified and that service work is required.
We recommend that at least every 12 months, or more frequently if the need arises, that the
following aspects are checked to ansure that the optimum performance level of the valve is
maintained.
With reference to the exploded diagram:
1) On the Caleffi 5213TM series valves, the inlet 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 pipework.
2) The built in check valves (11) on the Caleffi 5213TM series valves can be accessed in a
similar
way to 1) to ensure freedom of operation and correct seating.
3) In case of service work, the internal components of the valve can be dis-assembled for
cleaning and discaling.
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 discaling solution.
e) Re-assembly all the components. Lubricate all o-ring with suitable oil or grease.
Once the serviceable items have been dealt with we recommend that the commissioning
details as stated previously are repeated 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 Agent Service Department for
details and advice.
For best performance we recommend to replace the thermostat every 5 years and lubricate
all o-rings.
Spare parts
With reference to the exploded diagram, the following spare parts are available on request for
Caleffi 5213TM series valves:
Service Kit of the inlet sub-assembly, Kit A.
Service Kit of the internal components, Kit B.
10
F. istr. 38650_5213 9-07-2007 14:04 Pagina 10