DiaSys O MINI User manual

Omini operator’s manual version :19.04.17 0
Operator Manual
For
Water purifier

Omini operator’s manual version :19.04.17 1
CONTENT
Safety Informations......................................................................................................................... 2
2.1 Warning labels......................................................................................................................... 2
2.2 Safety instructions................................................................................................................... 2
Introduction to the system.............................................................................................................. 3
3.1 Introduction............................................................................................................................. 3
3.2 Overview of the system (front view)....................................................................................... 3
3.3 Overview of the system (back view) ....................................................................................... 4
3.4 General description................................................................................................................. 4
3.5 Description of the control unit................................................................................................ 5
Technical specifications................................................................................................................... 6
Installing the water purifier............................................................................................................. 7
5.1 Installations Conditions........................................................................................................... 7
5.2 Connections............................................................................................................................. 7
5.3 Installation of the water purifier membrane .......................................................................... 8
System start up................................................................................................................................ 9
Maintenance and service .............................................................................................................. 10
7.1 Maintenance calendar........................................................................................................... 10
7.2 Troubleshooting .................................................................................................................... 11
7.3 Consumables ......................................................................................................................... 12
OMINI Filters kit (ref. 950039)....................................................................................... 12
OMini Membrane kit (ref. 950023) ............................................................................... 13
OPMini RESIN KIT (ref. 950020)..................................................................................... 13
7.4 Maintenance procedures ...................................................................................................... 14
Flow measurement procedure...................................................................................... 14
Conductivity measurement procedure ......................................................................... 15
Change of SEDIMENT FILTER 5 µm................................................................................ 16
Change of ACTIVE CARBON BLOCK FILTER .................................................................... 17
Change of RESIN CARTRIDGE......................................................................................... 18
Change of the POST TREATMENT CARTRIDGE: SEDIMENT 1 µm .................................. 19
Change of the REVERSE OSMOSIS MEMBRANE ............................................................ 20
Change of FLOW RESTRICTOR ....................................................................................... 21
7.5 Spare parts............................................................................................................................. 22
Flow path diagram ............................................................................................... 24
Packing list..................................................................................................................................... 25

Omini operator’s manual version :19.04.17 2
SAFETY INFORMATIONS
Read the safety information before installing the water purifier
2.1 WARNING LABELS
Before reading the manual, please get familiarized with the following icons used in this manual.
Electric Shock
Warnings
2.2 SAFETY INSTRUCTIONS
To ensure the product SECURITY and RELIABILITY, all repairing must be realized with spare parts
available with our after-sales service. If the power cable is damaged, it must be replaced.
Unplug the water purifier power plug. Don’t pull on the wire.
Before all maintenance on the water purifier, turn off the power supply switch and
unplug the power plug.
Use exclusively tap water to supply the water purifier.
- MAXIMUM NETWORK PRESSURE = 6 BARS
- Maximum supply water temperature = 38 °C.
This water purifier needs a main tension 230 volts ~ / 50 Hz.
Don’t connect too much instruments on the same plug in order to not risk fire
or electric shock.

Omini operator’s manual version :19.04.17 3
INTRODUCTION TO THE SYSTEM
3.1 INTRODUCTION
The DiaSys water purifier « O MINI » is a purified water production system allowing two water
treatment leading-edge technologies:
The BI-REVERSE OSMOSIS, which is currently the most effective and elaborated - membranous
separation process,
The demineralization principle by IONS EXCHANGERS RESINS.
These two associated technologies allow getting water with excellent quality regarding
physical composition, chemical composition (mineral and organic) and micro organic
population.
3.2 OVERVIEW OF THE SYSTEM (FRONT VIEW)
Storage tank
Electronic
control case
Booster pump
Post
treatment
Reverse
osmosis
membrane

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3.3 OVERVIEW OF THE SYSTEM (BACK VIEW)
3.4 GENERAL DESCRIPTION
The "o mini" osmosis system is a water treatment system that includes a series of
prefiltration cartridges for the network water: Sediment filter 5 μm + Block carbon filter.
Once this water is treated, it is then injected via a booster pump into the reverse osmosis
membrane.
The water obtained is thus discharged of 90% of its organic and inorganic compounds.
In order to complete the complete treatment, this water is then injected into an ion exchange
resin container and then filtered by a 5 μm post-treatment filter.
The electromechanical assembly is managed by an electronic control unit.
Resin filter
Active carbon
block fitler
Filter for
sediments
5 μm

Omini operator’s manual version :19.04.17 5
3.5 DESCRIPTION OF THE CONTROL UNIT
PUMP indicator turned on
Pump functioning: means the water purifier is either producing or
rinsing.
FLUSH indicator turned on
The water purifier makes an automatic rinsing cycle of the reverse
osmosis membrane; a rinsing (of around 2 min) happens:
- following to the instrument starting,
- following a frequency of around 6 hours,
- following a pressure on the MANUAL button.
SOURCE indicator turned on
Lack of flow or pressure on water supply.
FULL indicator turned on
Full storage tank.
POWER indicator turned on
water purifier under tension; this indicator is switched on
permanently, whatever the other indicators states are.
MANUAL push button
Press this button makes starting a forced rinsing of the membrane
during 2 min.
water purifier producing
Rinsing cycle
Water supply default
Water storage full
Terms meaning :
PUMP : PUMP
FLUSH : RINSING
SOURCE : WATER SUPPLY
FULL : FULL TANK
POWER : UNDER TENSION
MANUAL : MANUAL RINSING

Omini operator’s manual version :19.04.17 6
TECHNICAL SPECIFICATIONS
Power supply voltage 230 volts ~ / 50 Hz.
Production flow at 25 ° C 15 liters / hour
Production flow at 10 ° C 9 liters / hour
Resin type Resin with mixed beds
Resins volume 0.75 liters
Maximum supply water temperature 38 °C
Maximum hardness without protection 40 °f of TH
Admissible pH 3 to 11
Mini / maxi supply pressure 2 / 6 bars
Dimensions (l × h × w) 42 X 39 X 43 cm
Indicative weight 13.5 kg
This system is recommended for daily consumption less than 30 liters.

Omini operator’s manual version :19.04.17 7
INSTALLING THE WATER PURIFIER
5.1 INSTALLATIONS CONDITIONS
Water inlet (2 to 5 bars) equipped with a turn hand valve or a male exit tap of 15/21 or 20/27.
Protected electric input (230 V ~, 50 Hz + EARTH).
Drain
5.2 CONNECTIONS
Connect to tap water inlet by
using « male simple union » –
Integrate an « isolation hand
valve »
Purified water outlet to be
connected via a tubing to an
"isolation valve" allowing water
to be drawn for the analyzer
To be connected to the storage
tank
Drain of the osmosis unit to be
connected directly to the
sewer (to avoid to damage the
system, must be always open
; do not connect a valve )
Connect to tape water inlet by
using « male simple union » –
Integrate an « isolation gate »

Omini operator’s manual version :19.04.17 8
5.3 INSTALLATION OF THE WATER PURIFIER MEMBRANE
1. Remove the membrane holder out of its two plastic stirrups . (Figure 1)
2. Disconnect the water inlet pipe from the membrane holder by disconnecting the quick fit
coupling. (Figure 2)
3. Unscrew (by turning to the right) the high streaked part ("big cap") of the membrane holder.
4. Once the membrane door is opened. Insert the new membrane (Figure 3), peripheral seal at
the top, to the complete stop: the end of the collecting tube must be closed to the top of the
membrane holder. (Figure 4)
Figure 1 Figure 2
Figure 3 Figure 4
5. Check that the O-ring is well-positioned at the bottom of the retaining wall of the membrane
holder (see the drawing).
6. Unscrew (by turning to the right) the high streaked part ("big cap") of the membrane holder.
7. Clip the membrane on its stirrups.

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SYSTEM START UP
1. Connect the water purifier hydraulically then electrically.
2. Check all hydraulic connections.
3. Close the storage tank valve.
4. Open the water purifier exit hand valve.
5. Open the city water supply valve.
6. Electrically switch on the water purifier.
7. The control unit goes through the following phases:
1 /
2/
8. Wait (a few minutes) for purified water to drain from the water purifier exit hand valve, then
let about 20 liters flow.
9. Then carry out a conductivity. The value obtained must be 0 to 0.1 μS / cm. Then close the
water purifier exit hand valve.
Open the storage tank valve and wait for its full refill: "Full" indicator lit in green
The control unit goes through the following phase:
The water purifier is then operational
The power indicator indicates that the osmosis
unit is energized.
The pump indicator indicates that the pump is
running.
The flush indicator indicates that the system is in
the rinse phase of membrane.
When the flush light goes off the system enters its
production phase.

Omini operator’s manual version :19.04.17 10
MAINTENANCE AND SERVICE
7.1 MAINTENANCE CALENDAR
In order to insure an optimal functioning of the water purifier, it is necessary to realize a certain
number of controls and maintenance of first level.
These actions must be realized by the customer. The following board gives the controls to make and
the actions of maintenance to realize, their frequency and the operator.
Frequency
Operation
DAILY
Check before using purified water that the
indicator « full » is switched on
WEEKLY
Check purified water conductivity
EVERY 3 MONTHES
Check the reverse osmosis membrane exit
conductivity
AT LEAST EVERY 6 MONTHES
depending of conductivity values
Replace the resin cartridge
AT LEAST EVERY 6 MONTHES
depending of conductivity values
Replace the pretreatment filters and post-
treatment filter
OCCASIONALLY
Replace the reverse osmosis membrane and
the flow restrictor

Omini operator’s manual version :19.04.17 11
7.2 TROUBLESHOOTING
PROBLEMS
POTENTIAL CAUSES
SUGGESTED ACTION
Power light OFF
No power supply
Verify the power supply
wires ; switch power ON
Power supply fuse is broken
Check and replace the fuse
•Power light ON
•No production of purified water
•indicator PUMP is off
•indicator SOURCE is ON
The inlet tap water supply is closed
or has insufficient pressure
Improve water supply
Water inlet tubing folded or
obstructed
Check that the inlet pipe is
not damaged.
•Power light ON
•No production of purified water
•all control light indicators OFF
A fuse is broken :
- pump fuse
- fuse in the controller box
Check and replace the fuse
•Power light ON
•No or low purified water
production
•indicator PUMP light ON
•Pump running
Pre-treatment clogged
Replace the pre-treatment
filters before the RO
membrane
Weak flow of inlet water
Increase the flow of the
inlet water
Reverse osmosis membrane
clogged
Change the membrane
•Power light ON
•No or low purified water
production
•indicator PUMP light ON
•Pump always OFF
Pump fuse burned
Replace the pump fuse
•Light indicators FULL and PUMP
alternate
Defective high-pressure sensor or
check valve
Change pressure sensor
and check valve
•Power light ON
•Lack of pressure and low flow
output
Watertank hand valve closed
Turn ON the watertank
hand valve
Requested pure water volume
above the capacity of the water
purifier
Wait the watertank is
filled again
Lack of pressure in the pressurised
watertank
Re-adjust the air-pressure
of the water tank
purified water conductivity too
high
Resin saturated
Replace resin cartridge or
bottle
•POWER light ON
•FULL indicator ON
•Pump OFF
•Drain flowing continuously
Inlet solenoid valve defective
Replace the inlet solenoid
valve
Conductivity meter display OFF
Batteries out of order
Replace the batteries

Omini operator’s manual version :19.04.17 12
7.3 CONSUMABLES
OMINI Filters kit (ref. 950039)
The OMini Filters kit contains the following consumables:
Pre-treatment
The 5 µm sediments cartridge (10")
The active carbon block cartridge ( 10")
Post-treatment
The 1 micron post traitement cartridge (10")
The 2 pre treatment filters must be replaced when a plugging, significant drop of the purified water
production flow and/or sediments 5 µm filter seems dirty.
Note: the23 pre treatment cartridges average life time is from 2 to 6 months following the tap water
quality (Material Suspended rate measurable by the turbidity) and the water purifier running time.
The post treatment cartridge must be replaced at the same
time than the pre treatment cartridges.
Filter for
sediments
5 μm
Active carbon
cartridge
Post-treatment filter

Omini operator’s manual version :19.04.17 13
OMini Membrane kit (ref. 950023)
The reverse osmosis membrane and the flow restrictor must be replaced when the flow of purified
water outlet is significantly low despite of a recent replacement of pre-treatment filters or/and an
important increase in the frequency of the ions exchangers resins bottle replacement .
Note : the average life time of a reverse osmosis membrane is from 1 to 3 years following the tap
water quality, the water purifier running time and the preventive maintenance respect.
OPMini RESIN KIT (ref. 950020)
The resin cartridge must be changed when the
purified water conductivity increases.
Note: the average life time of a resin cartridge is
from 2 to 6 months following the mineralization
(hardness = limestone rate) of the tap water and
the water purifier running time.
Reverse osmosis
membrane
Flow Restrictor

Omini operator’s manual version :19.04.17 14
7.4 MAINTENANCE PROCEDURES
Flow measurement procedure
7.4.1.1 General points
The flow measurement is interesting to check the filters and reverse osmosis membrane plugging
state.
The osmosis membrane flow is function of the supply water temperature.
We generally allow a flow drop of 3 % per Celsius degree in a range from 10 to 25 °C.
This flow measurement must be compared to the water purifier theoretical nominal value with a
fixed temperature, which is 25 °C:
Note: this theoretical flow rate represents the production at a "tank outlet" pressure of zero bar; it
decreases according to the increase in the pressure "Outlet tank".
7.4.1.2 Equipment
1. A graduated test tube of 500 mL.
2. A chronometer.
7.4.1.3 Operating method
1. Close the storage water hand valve..
2. Open the water purifier exit hand valve and let flowing 30 seconds to get a stabilized flow.
3. Trigger the chronometer as soon as the test tube is filling. Make a measurement on 1 or 2
minutes.
4. Convert the result into liters/hour. Compare this measurement to the theoretical value.
Theoritical production flow variation / supply water temperature
0
10
20
30
40
50
60
70
510 15 20 25 30
Temperature °C
Purified water flow
Liters / hour

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Conductivity measurement procedure
7.4.2.1 General points
The global quantity of dissolved solids in water can be measured by the CONDUCTIVITY (expressed in
microsiemens per centimeter (µS / cm).
The conductivity measurement allows estimating the demineralization quality.
The relation between the TDS (total dissolved solids = total mineralization) and the conductivity is:
1 µS / cm ≈ 0, 4 mg / L of NaCl (sodium chloride)
7.4.2.2 Conductivity measurement operating method
1. Let flowing the water to test 15 to 30 seconds.
2. Remove the conductivity meter protection cap.
3. Rince the protection cap and the conductivity meter probe with the water to test.
4. Renew the operation 2 to 3 times.
5. Fill protection cap of the conductivity meter with the water to test then plunge the
conductivity meter: read the measured value.
6. Renew the operation 2 to 3 times; the retained value will be the last measurement one.
7. Switch off the conductivity meter then put back the protection cap.
7.4.2.3 Purified water conductivity measurement « water purifier exit »
This conductivity measurement must be done weekly at the purified water outlet.
7.4.2.4 Conductivity measurement « membrane exit »
1. Close the storage tank hand valve.
2. Close the « ions exchange resins ENTRY » hand valve.
3. Remove the plug on the outlet « TEST reverse osmosis membrane exit ».
4. Open the « TEST reverse osmosis membrane exit » hand valve.
5. Do the measurement
6. Close the « TEST reverse osmosis membrane exit » hand valve.
7. Reconnect the plug on the outlet and open the « ions exchange resins ENTRY » hand valve.
8. Open the storage tank hand. The water purifier is again operational.
INTERPRETATION OF THE VALUE OF THE CONDUCTIVITY OF PURIFIED WATER
Conductivity <1 μS/cm
Class 1 water (according to ISO 3696)
Water of very good quality; no impact on the quality of the
analyzes
1 μS/cm <Conductivity <5 μS/cm
Class 2 water (according to ISO 3696)
If the desired water class is class 1, then change the resin
cartridge.
In any case, the resin cartridge will have to be changed soon
Conductivity> 5 μS/cm
Change the resin cartridge immediately

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Change of SEDIMENT FILTER 5 µm
1. Close the tap water hand valve.
2. Close the storage tank hand valve.
3. Open the water purifier exit hand valve to depressurize the network; the indicator
« SOURCE » of the electronic unit lights. Leave the water purifier exit hand valve open. Turn
off the water purifier (switch in position « 0 »), then unplug the power plug.
4. Remove the two glass doors.
5. Using the smaller key (supplied with reverse osmosis) carefully unscrew (turn to
the left) the transparent filter holder (the right in front); WARNING: the filter is filled
with water, a mop at hand is recommended!
6. Once the filter holder out, remove the filtering cartridge used, then rinse it. Place the
new cartridge « Sediment Filter 5 µm» (included in kit ref. 950039)
7. Check that the O-ring is properly positioned in the filter holder groove, then re-
screw it. A « good tightening by hand » is enough.
8. Dry the floor at the bottom of the water purifier in order to detect a possible leak during the
starting up.
9. Open the tap water hand valve.
10. Re-plug the power plug then start up the water purifier. The indicators « POWER », « PUMP »
and « FLUSH » light: the water purifier starts 2 minutes of rinsing cycle of the osmosis
membrane. The rinsing is ended when the indicator « FLUSH » switch off; then the water
purifier is on production.
11. Open the storage tank hand valve.Let filling all filters holder. After some time, the water
must flow at the water purifier exit: let flowing 10 to 20 liters of water so as the drain
12. Close the water purifier exit hand valve. Put back glasses doors. Then the water purifier is
operational.

Omini operator’s manual version :19.04.17 17
Change of ACTIVE CARBON BLOCK FILTER
1. Close the tap water hand valve.
2. Close the storage tank hand valve.
3. Open the water purifier exit hand valve to depressurize the network; the
indicator « SOURCE » of the electronic unit lights. Leave the water purifier exit
hand valve. Turn off the water purifier (switch in position « 0 »), then unplug the
power plug.
4. Remove the two glass doors.
5. Using the key (supplied with water purifier) carefully unscrew (turn to the left)
the white filter holder (the middle one)
6. Remove the filter cartridge. Introduce the new cartridge ACTIVE CARBON BLOCK
FILTER (included in kit ref. 950039)
7. Check that the O-ring is properly positionned in the filter holder groove, then re-
screw this one. A « good tightening by hand » is enough.
8. Dry the floor at the bottom of the water purifier in order to detect a possible
leak during the starting up.
9. Open the tap water hand valve.
10. Re-plug the power plug then start up the water purifier. The indicators
« POWER », « PUMP » and « FLUSH » light: the water purifier starts 2 minutes of
rinsing cycle of the osmosis membrane. The rinsing is ended when the indicator
« FLUSH » switch off; then the water purifier is on production.
11. Open the storage tank hand valve.Let filling all filters holder. After some time,
the water must flow at the water purifier exit: let flowing 10 to 20 liters of water
so as the drain
12. Close the water purifier exit hand valve. Put back glasses doors. Then the water
purifier is operational.

Omini operator’s manual version :19.04.17 18
Change of RESIN CARTRIDGE
1. Close the tap water hand valve.
2. Close the storage tank hand valve.
3. Open the water purifier exit hand valve to depressurize the network; the
indicator SOURCE » of the electronic unit lights. Leave the water purifier exit
hand valve. Turn off the water purifier (switch in position « 0 »), then unplug the
power plug.
4. Remove the two glass doors.
5. Using the key (supplied with water purifier) carefully unscrew (turn to the left)
the transparent filter holder
6. Remove the filter cartridge. Rinse the filter holder. Introduce the new cartridge
resin cartridge included in kit ref. 950020
7. WARNING: the filter is filled with water, a mop at hand is recommended!
8. Check that the O-ring is properly positioned in the filter holder groove, then re-
screw it. A « good tightening by hand » is enough.
9. Dry the floor at the bottom of the water purifier in order to detect a possible
leak during the starting up.
10. Open the tap water hand valve.
11. Re-plug the power plug then start up the water purifier. The indicators
« POWER », « PUMP » and « FLUSH » light: the water purifier starts 2 minutes of
rinsing cycle of the osmosis membrane. The rinsing is ended when the indicator
« FLUSH » switch off; then the water purifier is on production.
12. Open the storage tank hand valve.Let filling all filters holder. After some time,
the water must flow at the water purifier exit: let flowing 10 to 20 liters of water
so as the drain
13. Close the water purifier exit hand valve. Put back glasses doors. Then the water
purifier is operational.

Omini operator’s manual version :19.04.17 19
Change of the POST TREATMENT CARTRIDGE: SEDIMENT 1 µm
1. Close the tap water hand valve.
2. Close the storage tank hand valve.
3. Open the water purifier exit hand valve to depressurize the network; the indicator
« SOURCE » of the electronic unit lights. Leave the water purifier exit hand valve. Turn off the
water purifier (switch in position « 0 »), then unplug the power plug.
4. Remove the two glass doors.
5. Remove the POST TREATMENT filter out of its two plastic stirrups.
6. Disconnect both feed and exit pipes linked respectively to the high and low joins of the filter
by disconnecting the fast joins.
7. Remove the worn filter. Introduce the new filter into its two plastic stirrups by respecting the
water flow sense.
8. Re-connect both exit and feed pipes to the respective filter joins.
9. Dry the floor at the bottom of the water purifier in order to detect a possible leak during the
starting up.
10. Open the tap water hand valve.
11. Re-plug the power plug then start up the water purifier. The indicators « power », « pump »
and « flush » light: the water purifier starts 2 minutes of rinsing cycle of the osmosis
membrane. The rinsing is ended when the indicator « FLUSH » switch off; then the water
purifier is on production.
12. Open the storage tank hand valve.Let filling all filters holder. After some time, the water
must flow at the water purifier exit: let flowing 10 to 20 liters of water so as the drain
13. Close the water purifier exit hand valve. Put back glasses doors. Then the water purifier is
operational.