6
2.4 Commissioning
When commissioning, the following procedure must be followed ensuring
the the MPV is properly :-
!
Open all suction valves and ensure that the pump strainer is filled with
water.
!
Open any valve on the return side of the filter.
!
Set Multiport Valve to 'BACKWASH' and start pump.
!
Check flow at the backwash pipe and allow the pump to run until the
backwash water is observed as reasonably clean, a minimum of five
minutes being recommended. This step is essential as the filter media is
not fully pre-washed and this procedure rinses the new sand clean.
Note that as the filter is initially empty it will take time to fill and there will
be a delay of a minute or two from when the pump is switched on to
when flow is observed.
!
Stop pump and turn MPV to 'RINSE'.
!
Start pump and allow media bed to rinse until waste water is observed
as clean. Stop pump and turn MPV to 'FILTER'.
!
Start pump and allow system to operate until a steady flow is noticed at
the pool inlets. As the system is not primed it will take time for all air to
be expelled, so be prepared for a delay of up to ten minutes before a
steady flow is apparent.
Under no circumstances should the position of the
Multiport Valve be changed when the pump is running.
Always switch off the pump first or serious equipment
damage may result.
WARNING
3. OPERATION
3.1 Use of Multiport Valve
DAYLIFF filters are fitted with a Multiport Valve to control filter operation.
There are six positions on the valve and the various operations possible with
the different settings are described below.
Summary of Contents for DAYLIFF DX Series
Page 1: ...DX Filter Installation Operating Manual...
Page 12: ...INS503A 12 22...
