Davey EAFM7, EAFC9, EAFM12, EAFM9, EAFC7 Installation And Operating Instructions Manual
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EAFM, EAFC & EAFN Filters
Installation and
Operating Instructions
Please pass these instructions on to the operator of this equipment.
2
WARNING
For proper operation, the inlet water pressure must be between
140kPa (20psi) and 690kPa (100psi) except for Model XFN12 where
the minimum is 210kPa. Lower pressure will mean low ow rates.
If the inlet pressure exceeds 690kPa a pressure reduction valve must
be tted prior to the lter.
If water hammer is prevalent a water hammer arrestor must also be
tted prior to the lter.
The lter should be located far enough from any water heaters to
avoid hot water backup to the lter.
The lter must be protected against freezing water temperatures.
Backwash this unit at least weekly to prevent media compaction and
channeling. As the valve is designed to bypass during backwash,
the outlet water should not be used during backwash or preferably
isolated during backwash.
If grit or sand is present in the water supply remove it with a coarse
(200 micron or similar) in-line strainer to prevent damage to valve
components and seals.
FAILURE TO OBSERVE THE ABOVE WILL VOID WARRANTY.
If connecting to a public water supply a backow preventer may have
to be installed – check with the water supplier.
3
INSTALLATION
1 Position the lter on a at surface close to a drain or any other properly
trapped outlet, and in a position where the lter can service all the water
lines which require the ltered water. The lter should be placed far
enough away from a water heater to avoid any hot water backup into the
lter. The EAF model lters require a standard or weatherproof 3 pin 10
amp power point, depending on the location of lter installation. Note that
valve operation is at 12 Volt and the Logix 742 is the controller tted as
standard.
2 Refer to: Operation Manual, 742/762 Control, 255 and Performa series
valves, pgs 15 -18.
3 Remove lter valve by unscrewing, anticlockwise. Pull the distributor
assembly out of the valve and place in tank (the distributor assembly is
the piece of tube with the strainer on the end inserted in the valve base).
Plug or cover the top end of distributor tube making sure no media can
enter the tube.
4 Fill tank to about 1/3 full with water, make sure the distributor is sitting
on the bottom of the tank, then place the media in the tank as follows,
leveling media between each layer. DO NOT shake lter to level the
media.
5 Remove plug or cover from the distributor tube making sure you do not
lift the distributor. Top up lter tank with water. Smear o-ring lubricant on
valve o-ring and replace valve onto tank (hand tight is usually sufcient),
making sure the distributor tube is properly inserted into the valve base.
6 Allow the media to soak for a minimum of two (2) hours before proceeding
place into service, preferably overnight, with the control valve in the
“Backwash” position. Carbon lters should soak for at least 24 hours,
preferably 48 hours.
Note that most media does not need replacing on a regular basis,
Neutral is the exception as it is sacricial and designed to dissolve
slowly neutralising acidity. It is likely to need topping up every 2 months
or so depending on water use and chemistry. For top up hints see next
section.
7 Run a hose (not supplied) from the drain outlet on the valve to the drain.
The hose should not be longer than 7 metres, be reduced or restricted,
not have any rises and should have an air gap of at least 40mm at the
drain entrance.
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