Specifications
Megaflo He
25
8.1 MAINTENANCE REQUIREMENTS
To ensure the continued optimum performance of the Premier Plus SystemFit it should be
regularly maintained. This is of particular importance in hard water areas or where the wa-
ter supply contains particulate matter. Maintenance should be carried out by a competent
person and any replacement parts used should be authorised Santon Premier Plus spare
parts. It is recommended that maintenance is carried out every 12 months and includes the
checks detailed in 8.2 and 8.3 below.
In hard water areas consideration should be given to periodically descaling the immer-
sion heater elements. To do this the Premier Plus unit will need to be drained, 8.4 and 8.5
below detail how to drain the unit and remove the immersion heater(s).
8.2 CHECK OPERATION OF SAFETY VALVES
Slowly open the Temperature and Pressure Relief Valve by twisting its cap for a few sec-
onds. Check water is discharged and that it ows freely through the tundish and discharge
pipework. Check valve reseats correctly when released.
NOTE : The water discharged may be very hot.
Repeat the procedure for the Expansion Valve (located on the Expansion Valve Core Unit).
8.3 CLEAN THE STRAINER
The strainer is incorporated within the Pressure Reducing Valve housing of the Cold Water
Combination Valve (see Diagram 10). To inspect and clean the strainer:
i) Turn off the isolating valve to the Premier Plus SystemFit.
ii) Open the lowest hot tap in the system to relieve the system pressure
iii) Unscrew the Pressure Reducing Valve Cartridge from the Pressure Reducing Valve
Housing.
iv) Pull the Pressure Reducing Valve cartridge from the valve assembly. The strainer will
be withdrawn with the cartridge.
v) Wash any particulate matter from the strainer under clean running water.
vi) Screw the Pressure Reducing Valve cartridge into the Pressure Reducing Valve
Housing ensuring the seal is correctly tted. DO NOT use any other type of sealant.
ix) Close hot tap, turn on isolating valve. Check for leaks.
8
Maintenance