Finerfilters RO400-E2 Manual

01704 807600
www.finerfilters.co.uk
[email protected]
Reverse Osmosis System
Installation and Maintenance Manual
For System –RO400-E2

1
Contents
1) General Information Page 2
2) Unit Information Page 3
3) Preparation Page 4
4) Installation Page 5
5) Maintenance Page 10
6) Replacement Filters Page 11
7) Troubleshooting Page 13

2
General Information
TO BE INSTALLED ON COLD WATER SUPPLY ONLY
TURN OFF MAINS WATER SUPPLY BEFORE STARTING
INSTALLATION
PLEASE CAREFULLY READ THROUGH MANUAL BEFORE
INSTALLING SYSTEM.
PLEASE KEEP THIS MANUAL IN A SAFE PLACE.INSTRUCTIONS
ARE INCLUDED FOR FILTER CHANGES
PLEASE NOTE THAT RO SYSTEMS REQUIRE A MINIMUM OF 3
BAR (45PSI)PRESSURE TO WORK.THE HIGHER THE PRESSURE
THE BETTER THE PERFORMANCE WILL BE.OPTIMAL
PRESSURE:5.5 BAR (80PSI)
(THESE UNITS ARE PROVIDED WITH BOOSTER PUMPS TO GET
THE BEST FROM YOUR UNIT).
Our reverse osmosis system will remove more than 96% of: foreign
particles, colloid, organic substances, heavy metals, soluble solids,
bacteria, viruses, pyrogen, nitrate, microorganisms, hormones,
fluoride and other harmful impurities. It only retains water molecules
and dissolved oxygen. To achieve this, RO systems use a special
kind of semi-permeable membrane. This membrane is protected by
pre-filters, these remove sediment, particulates and chlorine. The
membrane has layers of filtration which the water is pushed through,
any water that does not go through all the layers is expelled to the
waste line leaving only the pure filtrated water. RO units waste
around 70% of the water and will get the TDS down to around 10-
15% of the incoming TDS readings.
Post DI Filters can be added to the unit to get a lower TDS reading if
required.

3
Unit-
Stage one: Polypropylene pre-filter to remove sediment and dirt down to 5
microns.
Stage two: Granular activated carbon (GAC) filter.
Stage three: High density 5 Micron carbon block filter to remove chlorine.
Stage four: Reverse osmosis membranes (2 x 200 GPD), filters down to
0.0001 micron.
Stage five: Post carbon in-line filter to improve taste and odour.
Main Technical Parameter
1) Purified water output (based on optimal water pressure):
•400 GPD (2 x 200 GPD Membranes), 1514L/day
2) Inlet water temperature: 4~42⁰C
4) Pre-treatment filters total water output: >1000L
5) Water supply: tap or ground water, TDS <1000ppm
6) Operating bar pressure: 3 Bar (45PSI) or more. Optimal pressure to
received performance above is 5.5 bar (80PSI). Please do not use
on water pressure that exceeds 7 bar (100PSI) without a pressure
limiting valve.
Pumped Units:
7) Volt: AC220V/110V –DC24V / 50-60HZ
8) Power: 25W
9) Type of Guard against electric shock: Type II
10) The pump is adjustable. Use the allen screw on the head to adjust
the pressure. Please note: the pump will arrive on the highest
setting. Please do not use pump on pressure that exceeds 7 bar
(100 psi).
Pump Operation Principle Diagram

4
Preparation
Recommended Equipment List
•Variable speed drill
•Drill bit: ⅛” (for guidance) ¼” (to drain) and ½” (for tap)
•Pliers
•Phillips screwdriver
•Plastic tube cutter / Stanley Blade
The unit is supplied with white tubing which is to be cut to length
through each stage of installation.
The inlet to the unit is the larger pipe which is 3/8” size and the
smaller is the output tubing which is ¼” size.
Mark 1 (WHITE stopper) –Cold water supply to RO system
Mark 2 (BLACK stopper) –Wastewater to drain
Mark 3 (YELLOW stopper) –Do not remove unless you are
connecting to a pressurised storage tank.
Mark 4 (BLUE stopper) –Last stage on RO system to water outlet.
Fittings included

5
Installation
TO BE INSTALLED ON COLD WATER SUPPLY ONLY
TURN OFF MAINS WATER SUPPLY BEFORE STARTING
INSTALLATION
WHEN CUTTING TUBING TO SIZE,ENSURE THAT IT IS CUT
STRAIGHT WITH NO JAGGED EDGES
Fitting type:
1. Quick-Connect (QC) fitting:
How to connect –See Fig. 3. Remove collet clip, insert tubing
into fitting until it locks. Gently pull tubing back to ensure fit is
secure. Re-place collet clip.
How to disconnect –See Fig. 4. Remove collet clip, push
down on collet so it is completely flush with the fitting and pull
tubing simultaneously.

6
Tap Installation
The tap is optional for installation on this unit as some users will
prefer to gather the water directly into a clean bucket.
1. Determine location for tap, cut tubing to length (see fig.1 and 2)
and install tap using the diagram below or using white fitting
provided:
Diagram for illustration purposes only, your tap may differ, but installation
is identical.

7
Connect to cold water supply
1. Cut into existing 15mm copper pipe. Add the 15mm compression
tee fitting.
2. Using the grey ¾” x 3/8” PF fitting, screw this on to the male thread
of the compression tee piece. Ensure all fittings are secure.
(The ¾” x 3/8” PF fitting can also be connected to garden tap if you
prefer to connect the unit this way)
Install drain clamp
Determine location for drain clamp based
on plumbing layout. Drain should be
installed above the trap on either the
horizontal or vertical tailpiece, it should be
mounted as low as possible to avoid
draining noise.
3. (1/8” Optional) using a 1/8” drill bit, drill a
1/8” hole into one side of the drainpipe.
Then to enlarge the hole, use a ¼” drill bit.
4. Taking the side of the drain clamp with the QC fitting, stick the self-
adhesive sponge provided to the inside of the drain clamp (remove
centre piece of sponge beforehand). Place one half of the plastic clamp
on either side of the drainpipe with, and clamp loosely using the nuts
and bolts included.
5. Align hole on drain clamp with drilled hole. A drill bit (or pen/pencil)
may be used to help with alignment. Once aligned, tighten clamp with
Phillips screwdriver. Avoid over-tightening clamp.
6. Determine length of tubing needed for connection from RO system
to drain clamp and cut to length. Push tubing into fitting on clamp and
insert blue collet clip under collet. Pull the tubing back to check seal is
secure.

8
Assemble main RO system
7. Remove all packaging and plastic wrapping/seals from filters. Do
not include the membrane(s) in this step.
Connect housings to RO system by hand and then use spanner
provided to completely tighten. From right to left (closest to inlet):
- Sediment 5-micron pre-filter in - 1st stage housing
- Granular activated carbon (GAC) filter –2nd stage housing
- Carbon block filter in –3rd stage housing
Connect system
Determine length of tubing needed between RO system and mains
water supply and remove red stopper on unit. Connect tubing from
cold water supply, drain clamp and water outlet to RO system by
removing the coloured stoppers and inserting tubing into the
connections listed below:
Mark 1 (WHITE stopper) –Cold water supply to RO system
Mark 2 (BLACK stopper) –Wastewater to drain
Mark 3 (YELLOW stopper) –Do not remove unless you are
connecting to a pressurised storage tank.
Mark 4 (BLUE stopper) –Last stage on RO system to water outlet.
Check all tubing is secure by pulling back on tubing, remembering to
always remove collet clips before inserting tubing.
System Flushing –
It is very important to flush the RO system through in 2 stages to protect
the membrane(s) and to ensure optimum performance for your unit.
Flushing the unit releases any carbon fines, dust, air etc from the pre
and post filters which may have been present at the manufacturing
process.
By flushing the unit in 2 stages this stops the membrane from getting
clogged or a reduction in flow as the pre and post filters have already
been flushed.

9
1st System Flush –
The pre-filters now need to be flushed BEFORE the membrane(s) is
added to the unit.
Turn on mains water supply by either putting the ball-o-fix and isolator
tap to ‘on’ position (1/4” turn from off position). (The ball-o-fix fitting can
be left in ‘on’ position from here and the isolator tap is to be used to turn
the water ‘on’and ‘off’). Or turn the garden tap on if you chose this fitting.
Let the water run for approximately 10 minutes into a bucket or until the
water runs clear. While the water is flowing this will also release any
trapped air in the unit, so there may be spluttering.
Check around the unit for any leaks. (If a leak is found, turn off the water,
and check the fitting / tubing where the leak was found. Also see our
troubleshooting section at the back of the manual. Once the issue is resolved,
start process again).
Turn off the mains water by the isolator tap or garden tap and let the
water drain out.
Insert Membrane(s)
8. To insert membrane, remove post filters by pulling on bracket
connected to the membrane housing. Remove the tubing from the QC
fitting (inlet to membrane housing).
9. Lift membrane housing out of brackets and unscrew housing cap
using spanner provided. Please ensure the o’ring is kept on the thread
on the body of the membrane housing (not inside the housing cap).
10. Remove airtight film from membrane only (not blue film) and insert
into housing with the end with two black O-rings first. Screw cap back on,
push housing back into bracket and re-attached post filters. Check tubing
both ends to prevent leaks.

10
2nd (Final) System Flush –
Turn on the water by putting the isolator tap to ‘on’ position (1/4” turn
from off position).
You will hear the RO unit starting to produce water. Double check the
unit for leaks. (As per 1st system flush).
Open the Metal flush valve on the unit for 5 minutes to saturate the
membrane then close it.
Run the water from the RO unit for 10-15 mins into a bucket. Please
dispose of the water.
Maintenance
It is highly recommended to change your filters periodically to
maintain the highest level of filtration from your RO system. Changing
your filters regularly can also prolong the life of your RO system. The
table (below) shows how often it is recommended to replace each
filter/stage in your system. This is dependent upon water quality;
water hardness & particulates may result in filters being changed
more regularly than shown:
Filter Cartridge
Function
Lifespan
PP Sediment Filter
To remove sand, dirt and other
suspensions 5 micron or larger
6 months
Granular Carbon
Filter
To remove Chlorine and to improve
taste and odour to 20 micron
6 months
Carbon Block Filter
To remove chlorine and to improve
taste and odour to 5 micron
6 months
RO Membrane(s)
To remove foreign particles, soluble
solids, bacteria and viruses
1-3 years
Post Carbon Filter
To improve taste and odour and
provide a final polishing of the water
6 Months

11
RO Membrane Pressure Washing
When the RO membrane purifies the water, there are impurities and
bacteria left on the surface of the membrane which may affect the
quality and volume of the purified water. The RO membrane needs to
be cleaned periodically.
Our units will flush the RO membrane manually by turning the metal
flush valve into the open position for 2-3 minutes once a week.
Please ensure this valve is CLOSED when complete.
This valve is located on the drain line of the unit. This needs to be
opened when the unit is in the process of making water to allow the
water flowing through, to be re-directed back over the membrane.
All replacement filters and membranes can be purchased through
our website www.finerfilters.co.uk or call us on 01704 807600.
Replacing your filters –
(Filters only, not membrane)
Please have some towels and cloths ready, as some water will
escape from the unit.
Turn off the water by putting the isolator tap to ‘off’ position (1/4” turn
from on position) or using the garden tap.
Drain as much water from the unit as possible. If you have installed
the tap, open this for a few minutes. Then open the flush valve for a
few minutes, to release and built-up pressure.
*REMOVE THE MEMBRANE(S) FROM THE HOUSING AND SET
ASIDE UNTIL FILTERS HAVE BEEN CHANGED AND THE UNIT
FLUSHED*
Carefully remove the housing bowls and empty any residual water
down the sink / drain and remove of the exhausted filters.
Remove the wrapping of the new filter(s) and insert into housing(s).
Screw housing bowl back into place.
Repeat this for all filters contained in the housing bowls.

12
Inline Post Filter(s) - Remove the collet clips from the fitting and using
the quick release, remove the tubing on both sides. (Lift filter off
bracket if easier).
Un-screw the fittings from the end of the inline filter. Dispose of
exhausted filter. Remove any residual PTFE tap from the male thread
of the fittings. Using the PTFE tape provided with the unit, thread 15-
20 wraps of PTFE tap around the male end of both fittings.
Remove the new inline filter from the packaging and screw the fittings
back in place. Ensure the filter is the correct way by the flow arrow.
Put filter back in place and re-insert the tubing and collet clip and pull
back to ensure inserted correctly.
Now carry out 1st System Flush. (2nd flush not required unless the
membrane is replaced, see Replacing Filters and Membrane).
Carefully add membrane back into the housing.
Replacing Filters and Membrane(s) –
Please carry out all steps from the Replacing Filters section and carry
out the 1st flushing stage.
Follow the instructions for inserting your membrane, then carry out
the 2nd flushing stage to complete the filter and membrane changes.

13
Troubleshooting
Symptom
Probable Cause
Solution
No water
1. Water supply is off
2. Fault on non-return
valve
3.Pre, or post filter
clogged
4. RO membrane
damaged or clogged
5. Output line crimped
6. Flush valve open
1. Turn water supply on
and/or isolator tap in on
position
2. Fitting requires
replacing
3. Check/replace pre, or
post filter
4. Check/replace
membrane
5. Remove crimp
6. Ensure L1 flush valve
is closed
Slow flow
1. Pre, or post filter
clogged
2. Low Water
Pressure
3. Clogged Membrane
1. Check/replace pre, or
post filter
2. Booster Pump required
3. Open L1 flush valve
and carry out system
back wash.
Pre, or post filter
leaking
1. Tubing not inserted
fully
1. Remove tubing, ensure
end is straight. Insert and
gently pull back on tubing
to check secure
Bad odour
1. Membrane not
installed correctly
2. Bad membrane
3. New system (or
new filters/membrane)
1. Check membrane is
installed as instructed
2. If TDS reading is below
85%, replace
Membrane
3. Flush 20 litres through
system before use

14
Leaking membrane
housing
1. Threaded end cap
leaking
2. Cap or body of
housing leaking
3. O-ring not seated
properly
1. Unscrew cap, lubricate
O-ring. If leak continues,
replace
2. Check for any checks
in membrane housing or
cap. Replace if cracked
3. Make sure O-ring is in
groove and lubricated
(Membrane housing see
insert membrane on pg
10)
Cloudy/milky water
1. Defective
membrane
2. New filters or
membrane
1. Replace if TDS reading
is below 85%
2. Flush system through
Leaking fitting
1. Fitting damaged or
cracked
2. Tubing not pushed
in fitting or screw fit
not installed properly
1. Replace fitting
2. Push tubing in firmly
until it locks. Check screw
fit is installed correctly,
refer to image in
installation