13
Maintenance
6.4 If significant changes (e.g. > 2˚K) in the mixed water temperature are recorded in both
of these periods necessitating service work, then the next in service test should be
carried out at 18 to 21 weeks after commissioning.
7 The general principle to be observed after the first 2 or 3 in-service tests is that the intervals
for future tests should be set to those which previous tests have shown can be achieved
with no more than a small change in mixed water temperature.
8 In all areas periodic maintenance of the valve and associated fittings i.e. strainers, check
valves will ensure optimum performance levels are maintained.
Spares
A full range of spares are available for this product from Twyford.
PLEASE NOTE:
Only genuine spares should be used.
Please leave this Manual for the User