Avidity Science Pico PICO10T2 User manual

Pico™
Water Purification System
Operation Manual
OP-000100
Revision D
August 2018

© 2018 Avidity Science, LLC. All rights reserved.
Pico is a trademark of Avidity Science, LLC
Other brand and product names are trademarks or registered trademarks of their respective holders.
Although Avidity Science, LLC. has taken every precaution when preparing this manual, Avidity Science, LLC
assumes no responsibility for errors or omissions, nor does Avidity Science, LLC assume liability for damages
to your system resulting from the use of the information in this manual.
Information in this document is subject to change without notice and does not represent a commitment on the
part of Avidity Science, LLC.
Avidity Science, LLC.
819 Bakke Avenue
Waterford, WI 53185-5913
[phone]
[phone]
[phone] - Fax
www.avidityscience.com

Avidity Science, LLC Pico Water Purification System Operation Manual
Contents i
Contents
Important Safety and Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
RoHS/WEEE Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Hazard and Special Safety Notice Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Product Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Product Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Contacting Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pico Water Purification Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Purification Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Feed Water Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Installation and Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Mounting the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Install Dispenser Tap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Power and Water Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Install Pre-Treatment and RO Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Connect Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Perform Water Pressure Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Rinse RO Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Install DI Cartridge (for Type 2 water quality only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Rinse DI Cartridge (for Type 2 water quality only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Empty the Reservoir Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Fill the Reservoir Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Reset RO Quality Set Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Reset DI Quality Set Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Cover Screw Heads and Unused Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Control Display Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Function Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Set Date and Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Warning Messages and Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Pico Water Purification System Operation Manual Avidity Science, LLC
ii Contents
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Replace Tank Vent Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Replace Pre-Treatment / RO Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Replace DI Cartridge (for Type 2 water quality only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Dispose of Used Module and Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Replace Ultraviolet (UV) Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Recording Monthly Operating Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Permeate Water Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Feed Water Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Concentrate Water Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Feed Water Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Operating Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
DI Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Percent Rejection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Avidity Science, LLC Pico Water Purification System Operation Manual
Important Safety and Service Information iii
Important Safety and Service Information
The customer should comply with their organization’s Electrical Safe Practices as recommended by the
Occupational Safety and Health Administration (OSHA), or local and national safety codes.
This equipment must be operated by qualified persons who are knowledgeable and trained in its operation,
and its associated hazards.
Use caution when operating, or servicing this equipment. It is the user’s responsibility to read and under-
stand the content of this manual before operating this equipment.
SAVE THESE INSTRUCTIONS
RoHS/WEEE Statement
Avidity Science water treatment, automated watering, environmental monitoring, and access control sys-
tems specified in this manual are manufactured in compliance with the RoHS Directive
(EU Directive 2011/65/EU and subsequent amendments.
Hazard and Special Safety Notice Definitions
Below is a list of definitions of hazard symbols used on this product.
This manual may contain the following types of special notices.
IMPORTANT: Indicates information that is necessary to understanding a topic or performing a procedure.
NOTE: Indicates information that may be helpful in understanding a topic or performing a procedure.
WARNING! Risk of electrocution or electrical shock resulting in death or severe
personal injury.
WARNING! Could result in death or serious personal injury or equipment dam-
age.
CAUTION! Minor or moderate injury or equipment damage

Pico Water Purification System Operation Manual Avidity Science, LLC
iv Important Safety and Service Information
Product Warnings
Product Cautions
Contacting Technical Support
For up to one year after your system installation date, you may contact Avidity Science for free technical
support. All contact information appears in the table below.
UK Support
US Support
WARNING! Electric shock. The electrical equipment in this system must be
connected to a ground fault interrupting circuit. Failure to do so can cause elec-
trical shock resulting in severe personal injury or property damage.
WARNING! Electrocution. Never stand in water when handling electrical equip-
ment. Water is a conductor of electricity. Standing in water while operating this
equipment can cause electrical shock or electrocution resulting in severe per-
sonal injury.
WARNING! Electric shock. Disconnect the main power before servicing any
electrical components. Failure to do so can cause electrical shock resulting in
personal injury.
CAUTION! Equipment Damage. Follow all nationally and locally approved elec-
trical codes when installing and operating this equipment. Failure to do so can
result in equipment damage.
Phone E-mail Web Site
01844 201142 Option 2 [email protected] www.triplered.com
Phone E-mail Web Site
833 898 3420 [e-mail] www.avidityscience.com

Avidity Science, LLC Pico Water Purification System Operation Manuall
Introduction 1
Introduction
The Pico water purification system produces Type 2 (1 to 15 M/cm) or Type 3 water at a rate of 10 to
20 liters per hour with the option of ultraviolet sterilization. The processed water is stored in a 35 liter res-
ervoir (A) which can be dispensed with an included manual dispensing tap (B) as required.
All components are assembled around a reservoir chassis and are protected by a plastic housing designed
for bench or wall-mounting. The plastic covers (C) can be removed for access to replaceable components.
Two threaded ports (D) on each side of the unit are for connecting equipment utilizing the purified water.
All water and power connections and pressure adjustment (E) is located on the side of the unit.
All recorded data, warning messages and water quality information can be viewed from the controller
display (F).
Figure 1. Pico Water Purification System
Pico Water Purification Models
The content in this manual applies to these models. Some models include an optional submersible ultravi-
olet (UV) light for sterilization.
Table 1. Pico Models
Model
Product
Water
Quality
Product
Water Flow
Rate Model
Product
Water Quality
Product
Water Flow
Rate
PICO10T2 Type 2 10 liters/hr PICO10T3 Type 3 10 liters/hr
PICO10T2UV Type 2 10 liters/hr PICO10T3UV Type 3 10 liters/hr
PICO20T2 Type 2 20 liters/hr PICO20T3 Type 3 20 liters/hr
PICO20T2UV Type 2 20 liters/hr PICO20T3UV Type 3 20 liters/hr
B
A
F
C
E
D

Pico Water Purification System Operation Manuall Avidity Science, LLC
2Introduction
Purification Process
In normal operation mode, feed water enters the system through the inlet solenoid valve activating the
production pump. The untreated water is pumped through a carbon-based, combination pretreatment and
RO module to detain larger particles greater than 5 micron and chemicals such as insecticides, pesticides,
herbicides and chlorides.
The RO membrane will reject almost all bacteria, viruses, heavy metal compounds and organics, as well as
up to 98 percent of the salt content from the water. A percentage of the rejected concentrate water is sent
to a drain through a flow restrictor.
For Type 2 water production, the RO water will flow through a DI (de-ionization) cartridge containing
ion-exchange resins.
The purified water is sent to the reservoir. A conductivity sensor measures the quality of the permeate
before it enters the tank. An optical sensor monitors the water level in the reservoir.
Feed Water Requirements
The feed water used must meet these requirements.
Pressure: 0.1 to 6.0 bar [1.5 to 87 psi]
Minimum Flow: 60 liters per hour
Free Water Conductivity: Less than 1400 s/cm
Free Chlorine: Less than 0.1 mg/liter
Carbon Dioxide (CO2): 15 mg/liter
Silica: 15 mg/liter
Silt Density Index (SDI): Less than 3
Langelier Index (LI): Less than zero
Iron: Less than 0.1 mg/liter
Manganese: Less than 0.05 mg/liter
pH: 3 to 9
Temperature: 5 to 35 degrees C [45 to 90 degrees F]

Avidity Science, LLC Pico Water Purification System Operation Manual
Installation and Setup 3
Installation and Setup
Installation Kit
Figure 2 shows the components used in the installation of all Pico models.
Figure 2. installation kit components
Table 2. Installation Kit Components
Item Description
ATubing:
3/8-inch Inlet with non-return valve, 2 meters [6.5 feet] long
1/4-inch Concentrate outlet-to-drain with installed restrictor, 2 meters [6.5 feet] long
5/16-inch Permeate outlet, 2 meters [6.5 feet] long
BMaintenance Keys for module and cartridge changes, and fittings
CStraight and Elbow Fittings for tubing connections
DFlash drive with the Pico Water Purification System Operation Manual
EDispenser Tap
FPlug with Washer Seal for unused tap port
GDishwasher connection hardware
HFeed Water Tubing Fittings
1/2-inch, 1/4-inch, and 3/8-inch male NPT
IStickers for covering screw heads and unused connections
JAllen Wrench (4 mm) to remove right panel
A
BC
DEF
GH
IJ

Pico Water Purification System Operation Manual Avidity Science, LLC
4Installation and Setup
Mounting the System
The Pico unit can be mounted to a wall or placed on a sturdy bench. Avidity Science recommends wall-
mounting the unit to be sure that a connection to the lower dispenser-tap port is accessible. Refer to Install
Dispenser Tap on page 5 for information on placement of the Dispenser Tap.
Bench Placement
The bench must be able to hold 60 kg [132 pounds] and located on an flat, level surface. The surface of the
bench must be resistant to applied chemicals such as disinfectants, acids, dyes, and solvents.
Wall Mounting
The wall-mounting kit is separate. Use the included instructions as a supplement to this procedure to
mount the Pico unit. In addition to the kit, these are the tools required to mount the Pico Water Purifica-
tion unit to a wall.
•Wall Mounting kit, EI #1330-3000-001 (PICOWB)
•Pozi screwdriver
•Pen/pencil for marking wall
•Level
•Drill with 10 mm drill bit
•4 mm Allen Head wrench/Hex key
IMPORTANT: It is recommended that at least two people assist in mounting the unit.
Follow this procedure. Refer to Figure 3.
1. Measure the width of the Pico enclosure. This measurement (A) will be used as the spacing
between mounting brackets.
2. Position and level the left mounting bracket (L) vertically at the location desired mounting loca-
tion. Mark the bracket location and the four mounting hole locations on the wall.
3. Using a drill with a 10 mm masonry bit, drill four mounting holes at the marked locations deep
enough to insert wall anchors.
4. Insert the wall anchors.
5. Position the left mounting bracket (L) holes over the anchors and secure the bracket with four
anchor screws.
6. Position the right mounting bracket (R) from the left bracket the width measurement (A) acquired
in step 1.
7. Make sure the right mounting bracket (R) is vertically level and level with the left bracket. Mark the
bracket location and the four mounting holes on the wall.
CAUTION! Personal injury. The reservoir must be empty when mounting the
Pico unit. A reservoir with water adds extra weight that can result in personal
injury when lifting the unit onto the mounting brackets.

Avidity Science, LLC Pico Water Purification System Operation Manual
Installation and Setup 5
8. Using a drill with a 10 mm masonry bit, drill four holes deep enough to insert wall anchors.
9. Insert the wall anchors.
10.Position the right bracket (R) slots over the anchors and secure the bracket with four anchor
screws.
Figure 3. Align and secure left and right mounting brackets.
11.Use the level to be sure the brackets are aligned so the Pico unit will be level when mounted.
12.Using two people, place the Pico unit onto the mounting brackets. Be sure the mounting holes on
the side of the unit align with the mounting slots on the brackets.
13.With one person holding the unit in place, secure the unit to the brackets with the 4 mm Allen
head screws.
Install Dispenser Tap
The Dispenser Tap can be installed in either of two ports. Installation in the upper port is good for bench
placement of the Pico unit where a large container can be placed on the bench as it is filled, but there will
be no access to the remaining water in the reservoir once the level drops below the dispense port.
Installing the port in the lower port is best if the unit is wall-mounted and all water in the reservoir will be
accessible.
Follow this procedure.
1. Remove the Dispenser Tap from its packaging.
2. Determine which port on the reservoir to install the Dispenser Tap and remove the plug.
3. Place a washer over threaded end of the Dispenser Tap. Be sure the beveled-side of the washer
faces the threads of the tap.
4. Insert the threaded-pipe end of the tap through the hole. Hand-tighten only.
5. Place a washer over the red plug with the beveled side facing the threads and insert the plug into
the unused port. Screw the plug into the hole until tightened. Make 1/4-turn past tight to ensure a
proper seal.
A
A
LR

Pico Water Purification System Operation Manual Avidity Science, LLC
6Installation and Setup
Power and Water Connections
The power and Water connections are located on the right side of the unit. The table below identifies the
power, pressure adjustment, and water connections to the Pico unit.
Fittings
The feed water, inlet and outlet tubing is inserted and secured through the fittings defined in Table 3. All
fittings are plugged for shipping purposes. A plug must be inserted into any fitting that is not used.
To remove the plug, hold the plug in one hand and while pushing the fitting collar, pull out the plug.
Figure 4. Fitting collar (left).
Table 3. Power and water connections for the Pico unit.
Power Inlet from external 24 VDC power supply unit
Feed water inlet. Low pressure, less than 1 bar [15 psi]
Feed water inlet, High pressure, greater than 1 bar [15 psi]
Pump pressure adjustment. Factory set to 5.5 to 6 bar [79 to 87 psi]
Reservoir overflow connected to drain
RO concentrate outlet connected to drain.

Avidity Science, LLC Pico Water Purification System Operation Manual
Installation and Setup 7
Tubing
These are general guidelines for connecting the tubing to the Pico connectors.
•Use a sharp blade to cut the tubing
•Be sure the tube is long enough to allow for disconnecting and reconnecting during service.
•Be sure tubing is clean and not cracked
•Be sure there are no obstructions in the tube before connecting
•Do not use excessive force when inserting tubing. Excessive force may damage the tubing resulting in
leaks.
•Pull on the tube only once to be sure it is secured in the fitting
•After pulling once, insert the wrench under the collet and push the tube into the fitting once more for
a secure fit.
Connect High or Low Pressure Feed Water Tubing
NOTE: Use the provided elbow connectors as necessary.
The 5/16-inch feed water tubing can be connected to the high pressure or low pressure inlet fitting
depending on the known feed water pressure.
NOTE: If the pressure is not known, connect the feed water tubing to the high pressure fitting. A water pressure
test will be conducted at the completion of the installation process to determine the required pressure.
Follow this procedure.
1. Measure and cut the length of the 5/16-inch feed water tubing needed between the water source
connection and the applicable feed water inlet fitting on the Pico unit. Add extra length to accom-
modate removal and reconnection of the tube.
2. Connect the check valve-end of the tubing to the applicable inlet fitting.
Feed water inlet. Low pressure, less than 1 bar [15 psi]
Feed water inlet, High pressure, greater than 1 bar [15 psi]

Pico Water Purification System Operation Manual Avidity Science, LLC
8Installation and Setup
Connect Reservoir Overflow and RO Concentrate Tubing
The 3/8-inch tubing is connected between the Reservoir Overflow fitting and the drain. A check valve, to
prevent back flow, is installed in one end of the tubing.
The 1/4-inch tubing is connected between the RO concentrate outlet fitting and the drain.
NOTE: Use the provided elbow connectors as necessary.
Follow this procedure to connect the tubing to the applicable fitting.
IMPORTANT: The tubing for both the reservoir overflow and the RO concentrate must be positioned downward
toward the drain.
1. Measure and cut the length of the 3/8-inch tubing needed between the reservoir overflow fitting
and the drain. Add extra length to accommodate removal and reconnection of the tube.
2. Connect the check valve-end to the reservoir overflow fitting.
3. Measure and cut the length of the 1/4-inch tubing needed between the RO concentrate outlet
fitting and the drain. Add extra length to accommodate removal and reconnection of the tube.
4. Connect the tubing to the applicable fitting.
5. Position the tubing downward and directed toward a drain.
Install Pre-Treatment and RO Module
The Pre-Treatment and RO module are combined in one canister.
IMPORTANT: A Pico unit with a DI cartridge is shipped with a bypass tube connected between the green RO
water outlet tube and the white reservoir inlet tube. The bypass tube is required for rinsing a new Pre-Treatment
and RO module before installing the DI cartridge. Do not discard the bypass tube.
Follow this procedure.
1. Remove the left front cover of the Pico unit.
2. Remove the combination Pre-Treatment and RO module from its packaging.
3. Insert the hooks of the canister into the slots located on the right side.
NOTE: The location is labeled TC021 for a 10-liter unit or TC022 for a 20-liter unit.
Reservoir overflow connected to drain
RO concentrate outlet connected to drain.

Avidity Science, LLC Pico Water Purification System Operation Manual
Installation and Setup 9
4. Connect the color tubing (blue, red, and black) to the fitting with the corresponding color label on
the cartridge. See Figure 5.
Figure 5. Pre-Treatment and RO module connections.
Connect Power Supply
Secure the power supply cord to connector on the Pico unit. Plug the power supply into the appli-
cable power outlet.
IMPORTANT: Be sure the feed water supply is turned on.
Touch
Perform Water Pressure Test
A water pressure test will assist in verifying that the feed water tubing is connected to the correct inlet fit-
ting. Follow this procedure.
1. Take one of these actions.
If a DI cartridge is... Then...
Required Go to step 2.
Not required Go to step 3.

Pico Water Purification System Operation Manual Avidity Science, LLC
10 Installation and Setup
2. Connect one end of the bypass tubing (A) to the open end of the green RO water outlet tube (B)
and the open end of the white reservoir inlet tube (C) as shown in Figure 6. Use the provided
elbow fittings.
Figure 6. Bypass tubing connected.
3. On the control display, press .
4. Press .
5. Press . The inlet valve will open and begin flushing the unit.
6. When asked if RO module is installed, touch
7. Allow the pressure to adjust and stabilize for approximately 3 minutes and then take one of these
actions.
8. Turn off the water to the Pico unit.
If the pressure is Then,...
Less than 0.5 bar Go to step 8.
Greater than 0.6 bar Press OK and got to step 13
A
B
C

Avidity Science, LLC Pico Water Purification System Operation Manual
Installation and Setup 11
9. When the pressure displayed is less than 0.1 bar, remove the feed water tubing from the high pres-
sure inlet fitting and connect to the low pressure inlet fitting .
10.Turn on water to the Pico unit.
11.After 3 minutes check the pressure displayed on the screen. The pressure must be greater than
0.6 bar.
12.Press OK.
13.After 2 minutes, using a flat-blade screwdriver, adjust the pump pressure screw on the right
side of the unit until 6.0 bar (±0.2 bar).
14.Press OK.
Rinse RO Module
The RO portion of the combination Pre-Treatment and RO module must be rinsed before first use. If a
DI cartridge is required for Type 2 water, the bypass tube must be connected between the green RO water
outlet tube and the white reservoir inlet tube
IMPORTANT: Do not connect the DI cartridge (if applicable) before the RO module is rinsed. Bypass tubing
must be connected between the green RO water outlet tube and the white reservoir inlet tube.
Follow this procedure.
1. Take one of these actions.
2. On the control display, press .
3. Touch
4. Select TC021/TC022.
5. When Remove old TC021/TC022 appears, touch
6. When instructed to insert new TC021/TC022, touch . The module will rinse for one hour.
7. When operation is complete, touch .
8. If the bypass tube was connected, disconnect the bypass tube. Store the bypass tube in a safe loca-
tion.
If a DI cartridge is... Then...
Required Be sure the bypass tube is connected. See Figure 6.
Not required Go to step 2.

Pico Water Purification System Operation Manual Avidity Science, LLC
12 Installation and Setup
9. Press firmly at the center of the 12-month timer label sticker until a thin red line appears. See Fig-
ure 7.
Figure 7. Red line shows RO module 12-month timer is activated.
10.Take one of these actions.
Install DI Cartridge (for Type 2 water quality only)
Type 2 water requires de-ionization of the RO water. Follow this procedure.
1. If necessary, remove the left front cover of the Pico unit.
2. Remove the DI cartridge from its packaging.
3. Be sure the green RO water outlet tube and white reservoir inlet tube are connected according to
the color labels on the cartridge.
Figure 8. DI cartridge tube connections.
If the required water is... Then,...
Type 2, Go to section Install DI Cartridge (for Type 2 water quality only) on page 12.
Type 3, Go to section Empty the Reservoir Tank on page 13.

Avidity Science, LLC Pico Water Purification System Operation Manual
Installation and Setup 13
4. Secure the tubes into the clamps near the connections.
5. Replace and secure the left front cover of the Pico unit.
Rinse DI Cartridge (for Type 2 water quality only)
The DI cartridge must be rinsed before first use. Follow this procedure.
1. On the control display, press .
2. Press .
3. Select TC023.
4. When Remove old TC023 appears, touch
5. When instructed to insert new TC023, touch . The module will rinse for 10 minutes.
6. When operation is complete, touch .
7. When operation is complete, press firmly at the center of the timer label button until a thin red line
appears. See Figure 9.
Figure 9. Activate DI cartridge 6-month timer.
8. Replace the left cover over the unit.
Empty the Reservoir Tank
Some water has accumulated in the reservoir during the setup process. Empty the reservoir to ensure opti-
mum quality of the first batch of water.

Pico Water Purification System Operation Manual Avidity Science, LLC
14 Installation and Setup
Fill the Reservoir Tank
An optical sensor detects when the reservoir needs to fill and will issue a command to fill. Figure 10 shows
the screen indicating the reservoir is filling.
Figure 10. Screen displayed when reservoir is filling.
Figure 11 shows the screen indicating the reservoir is full.
Figure 11. Screen displayed when reservoir is full.
Reset RO Quality Set Point
The RO Quality set point is set at the factory. Circumstances may require changing the setting.
IMPORTANT: Contact Avidity Science Technical Support before changing the setting.
Follow this procedure.
1. Touch
2. Touch
3. Touch
4. Touch + or - for the desired RO quality setting.
5. Touch
15.0 MΩ