Better Water PB2 User manual

REA 2380
PB2
Mediport Portable RO
Operator Manual
Better Water LLC
rev. Jul 2019

REA 2380
Better Water LLC. All rights reserved.
The content of this manual is the intellectual property of Better Water LLC. It is furnished for the
express use by Better Water LLC, their customers and dealers, for informational use only for operation,
service, and internal training. No part of this manual may be reproduced for distribution, sale, or any
intent other than previously described without the written permission of Better Water LLC. This manual
is subject to change without notice. Better Water LLC assumes no responsibility or liability for any error
or inaccuracies that may appear in this documentation.
Adobe and Acrobat are registered trademarks of Adobe Systems, Inc.
Better Water LLC; 698 Swan Dr; Smyrna, TN 37167; www.betterwater.com

rev. Jul 2019
PB2 –Mediport Portable RO Operator Manual
TABLE OF CONTENTS
Our Company ……………………………………………………………………………………... 01
- Contact Us ……………………………………………………………………………………….. 01
- Technical Phone Support ………………………………………………………………………. 01
- Technical Support Info Online …………………………………………………………………. 01
- Specific Contacts ……………………………………………………….……………………….. 02
Introduction ………………………………………………………………………………………… 02
Warnings & Cautions ……………………………………………………………………………...03
Models ……………………………………………………………………………………………… 04
Important Information for Support ………………..……………………………………………... 04
Product Description ………………………………………………………………………………. 05
- Detailed Views ………………………………………………………………………………….. 06
- Monitor and Control System …………………………………………………………………… 08
- RO Unit …………………………………………………………………………………………… 08
Optional Accessories
- Short & Extended Carts ………………………………………………………………………… 10
- Disinfect Jug …………………………………………………………………………………….. 10
- Booster Pump …………………………………………………………………………………… 10
- Divert-to-Drain …………………………………………………………………………………… 11
- UV Light ………………………………………………………………………………………….. 11
- 5 micron Pre-Filter ………...…………………………………………………………………….. 11
- 20” Carbon Block Filters ……………………………………………………………………….. 12
- Portable Carbon Tanks ………………………………………………………………………… 12
- 8” x 30” Water Softener with Brine Tank ……………………………………………………… 12
- DI Polishing Filter ……………………………………………………………………………….. 13
- Short Bowl for the 10” Carbon Block Filter Housing …………………………………..…….. 13
- False Tube for the .05 micron Capsule Filter ………………………………………………… 14
General Requirements & Specifications ……………………………………………………….. 15
INSTALLATION & SET-UP ……………………………………………………………………... 17
- Unpacking and Initial Start-Up ……………………………………………………………….... 18
- Order of Pre-Treatment and Diagram of Water Flow ……………………………………….. 25
- Point-to-Point Connection Details …………………………..………………………………… 25
- Connection Configurations With and Without a Booster Pump and/or Divert-to-Drain … 26
- Portable Carbon Tanks ………………………………………………………………………… 28
- 8” x 30” Water Softener with Brine Tank ……………………………………………………… 29
- Divert-to-Drain …………………………………………………………………………………… 30
OPERATION ……………………………………………………………………………………… 33
- Familiarization with Water Quality Monitor and PB2 Controls …………………………….. 34
- Setup for a Dialysis Treatment ………………………………………………………………… 35
- Flushing the PB2 ………………………………………………………………………………... 36
- Low Pressure Alarm …………………………………………………………………………….. 37
- Connecting Two Dialysis Machines …………………………………………………………… 38
- General Cleaning and Disinfecting Information …………………………………………….. 39
- Cleaning and Disinfecting Procedure …………………………………………………………. 41
- End to End Disinfect Procedure ……………………………………………………………….. 45
- Long Term Storage: Preserve and Pack …………………………………………………….. 49

rev. Jul 2019
PB2 –Mediport Portable RO Operator Manual
- Rinsing the PB2 After Being Packed in Preservative ……………………………………….. 51
APPENDIX
Appendix A, Limited Warranty Terms and Conditions ……………………………………….. 53
Appendix B, Technical Service Bulletins ………………..….………………………………….. 55
- TSB2012001: PB1/PB2 Low PSI / Monitor Modification …………………………………… 56
- TSB2012002: PB2 Low Pressure Issues When In Flush ………………………………….. 62
- TSB2012003: PB2 Water Quality Monitor Adjustment to Alarm on %-Rejection for
Nuisance Alarms ………………………………………………………………………………… 64
- TSB2012004: Portable RO Current Leakage Values ………………………………………. 67
- TSB2012005: Replacing the 10” Carbon Block Filter Bowl with Replacement Short
Bowl on Portable ROs ………………………………………………………………………….. 68
- TSB2012008: PB2 Bypass for Using External Nephros SSU Filter ………………………. 70
- TSB2012011: PB2 Conversion for New Control Box and Divert-to-Drain ……………….. 71
Appendix C, Pre-Ship Test Data …………………………………………………………….….. 77
Better Water LLC; 698 Swan Dr; Smyrna, TN 37167; www.betterwater.com
Visit our website to see our complete product line of
water purification products!
www.betterwater.com

Better Water LLC; rev. Jul 2019
Page 1 of 80
PB2 –Mediport Portable RO Operator Manual
0
Our
Company
Contact
Us
Technical
Phone
Support
Technical
Support
Info
Online
Better Water LLC is a leading integrated manufacturer of water treatment
equipment and components for the industrial, commercial and institutional
markets.
Located in Smyrna, Tennessee,
Better Water LLC continues its history
of manufacturing and distribution of
equipment specifically designed for the
renal dialysis market.
Founded in 1971, Better Water LLC has
built a reputation for solving our
customers' toughest problems with high
quality products and unmatched service.
Better Water LLC Technical Support:
698 Swan Dr Phone [phone], press "1"
Smyrna, TN 37167 Email [e-mail]
Phone [phone] Customer Service:
Fax [phone] Phone [phone], press "3"
Email [e-mail]
Support is available regarding all Better Water LLC systems,
24 hours a day,7 days a week.
Normal business hours are Monday through Friday from
8:00 am until 3:30 pm, Central Standard Time (excluding holidays)
Call [phone], press "1" for Technical Support
Emergency assistance is available after normal business hours (including
holidays) by calling [phone].
Our website, www.betterwater.com, which is updated
frequently, contains a wealth of technical support information on the
SUPPORT tab and includes:
Operator and Service Manuals
Consumables and Accessories Lists
Technical Service Bulletins
For your convenience there are also online forms for placing Orders
and requesting Returned Goods Authorization. These are PDF
forms that can be downloaded and either faxed or emailed to us.

Better Water LLC; rev. Jul 2019
Page 2 of 80
PB2 –Mediport Portable RO Operator Manual
Specific
Contacts
Technical Support Phone [phone], option “1”
Email [e-mail]
To Place an Order Fax [phone]
(purchase orders) Email [e-mail]
Phone [phone]
Customer Service Phone [phone], option “2”
(returns) Fax [phone]
Email custom[email protected]om
Website www.betterwater.com
Helpful information and forms that can be found on our website:
- Operator & Service Manuals
- Technical Service Bulletins
- Consumables and Replacement Parts List
- Brochures
- Order Form
- Return Goods Authorization Request Form
The Better Water LLC PB2 is manufactured to the utmost quality. With
proper care, preventative maintenance, and proper use, it should
provide you with a very effective means of treating water for dialysis
treatments.
Before starting you should first read and have a thorough understanding
of this entire Operator Manual. It describes in detail the steps and
procedures for safe usage of the PB2.
The RO cannot do the job alone. It is important to understand and
monitor the changing tap water conditions, which include contaminants,
temperature, pH, pressure and flow-rates, which have a direct impact on
the quality and quantity of the RO’s output. Since municipal water
conditions are constantly changing, good two-way communications with
your municipal water supplier coupled with routine testing of the tap
water is vital to the safe and effective operation of this device.
Once the this device has been delivered, it is the responsibility of the
Medical Director to ensure that it is used, monitored, and maintained in
such a manner so as to satisfy all applicable standards. Guidelines and
other related information are available from:
- Food and Drug Administration (FDA)
- National Association of Nephrology Technicians/Technologists (NANT)
- Association for the Advancement of Medical Instrumentation (AAMI)
NOTE concerning pictures in this manual:
Pictures of devices and components may vary slightly due to product
changes, and therefore should be for general reference only.
Information concerning their use, functionality, or replacement will not
differ unless noted.
Introduction

Better Water LLC; rev. Jul 2019
Page 3 of 80
PB2 –Mediport Portable RO Operator Manual
WARNINGS
1. It is unsafe to operate or service this device without first reading and understanding the entire
Operator and Service Manuals. Keep this manual and other associated documentation for future
reference.
2. Misuse, improper operation, and/or improper monitoring of this system could result in serious
injury, death, or other serious reactions to patients undergoing hemodialysis treatment.
3. Misuse, improper use or handling of disinfectants and chemical cleaning solutions could result
in serious injury or even death. You must comply with the information contained in the Material
Safety Data Sheet (MSDS) for the chemical being used.
4. To avoid electrical shock hazard, do not operate this device when the covers or panels are
removed.
5. ELECTROMAGNETIC INTERFERENCE: This device can create and radiate
radio frequency energy and may cause harmful interference if not installed
according to the manufacturer's instructions.
CAUTIONS
1. When used as a medical device, federal law restricts this device to sale by or on the authority
of a physician. Per CFR 801.109 (b)(1).
2. Improper operation of this device could result in a low or no-flow alarm on the dialysis
machines.
3. Misuse or improper operation of this device will void any warranty.
4. Where water is mentioned, unless otherwise noted, it must be AAMI standard quality water.
5. Electrical and plumbing connections must adhere to local statutes and any facility codes.
Connect this device to a proper ground connection in accordance with the National Electrical
Code. Do not remove the ground wire or ground plug. Do not use an extension cord with this
device.
6. Do not remove any Caution, Warning or any other descriptive labels from the device.
7. Do not operate this device in an explosive environment or in the presence of flammable
materials. Do not use this device to store, mix or transfer flammable liquids.
8. Movement or vibrations during shipment may cause connections to loosen.
9. Do not operate this unit in an environment where temperatures may be below 50oF or above
90oF.
10.This device should not be used for purposes outside the device’s stated applications,
specifications or limitations.

Better Water LLC; rev. Jul 2019
Page 4 of 80
PB2 –Mediport Portable RO Operator Manual
MODELS
There are two models of the PB2, based on the electrical requirements. The operation, service,
and replacement parts of these two units are basically the same with the only difference being
some electrical components.
Part#
Electrical
EQROPB01600
230 vac, single phase
EQROPB01613UL
115 vac, single phase
IMPORTANT INFORMATION FOR SUPPORT
Adhered to the side of the control box of each PB2 is a label containing important information
relating to the specific unit, and details both the Model and Serial Number. Both of these
pieces of information are very important in obtaining support, determining warranty, and properly
servicing the unit. Please have this information available if you contact Technical Support.
The first four numbers in the serial number denote the year and month the device was
manufactured. In the example above the PB2 was produced in 2016, in the month of February.
“16” –Year
“02” - Month

Better Water LLC; rev. Jul 2019
Page 5 of 80
PB2 –Mediport Portable RO Operator Manual
PRODUCT DESCRIPTION
The PB2 is a versatile, user-friendly, portable reverse osmosis unit built for a number of
hemodialysis applications such as acute, sub-acute, beside, and home, for both daily and
nocturnal dialysis. It is extremely quiet, being rated at only 53 decibels. It also has a number of
optional accessories to enhance its capabilities and functionality such as a booster pump, UV
light, divert-to-drain, and carts.
BASIC COMPONENTS
1. The Control Box contains the electronic components for operational control, monitoring, and
alarms, which includes the Water Quality Monitor.
2. Mounted on the front of the unit there are Gauges for monitoring operational status. These are
the Filter-In, Filter-Out, Product, and Pump.
3. The Top Panel is hinged to fold forward to access the control box and the back of the Water
Quality Monitor.
4. A hinged Cabinet Door is located on the front of the PB2 for easy accessibility to its inner
components
5. There are three Filters on the inside of the cabinet:
- 10” 5 micron Filter –pre-treatment, sediment filtration
- 10” Carbon Block Filter – pre-treatment, chlorine/chloramines filtration
- Capsule Filter –post-membrane, pyrogen filtration
6. The center of the reverse osmosis process is a 4” x 21” Membrane located inside the cabinet.
7. Removable Bottom Panel to access the compartment containing the Motor and Pump.
8. Located on the back of the PB2 is the Accessories Connections and Electrical Panel.
Besides the power cord and two breakers (Hot & Neutral), are power and control connection
points for a UV Light, Booster Pump, and Divert-to-Drain.
9. On the left side of the PB2 are many Hose Connection Ports for Water-In, Product-Out,
Drain, Disinfect, Pre-Booster Pump, and Post-Booster Pump. There is also a manual Flush
Valve.

Better Water LLC; rev. Jul 2019
Page 6 of 80
PB2 –Mediport Portable RO Operator Manual
DETAILED VIEWS
Front View
Air Vent
Right Side View
Power
Cord
Access Door
to internal
components
Hand
Hold
Gauges:
Filter-In,
Filter-Out,
Pump,
Product
Water Quality
Monitor
Motor/Pump
compartment
Hinged Front
Panel to
access Control
Box and
Membrane

Better Water LLC; rev. Jul 2019
Page 7 of 80
PB2 –Mediport Portable RO Operator Manual
Product-Out
Port
Pre-Booster
Port
Accessories
Connection
& Electrical
Panel
Left Side View
Back View
Hand
Hold
Water-In
Port
Flush On-Off
Valve
Drain
Port
Disinfect
Port
Post-Booster
Port

Better Water LLC; rev. Jul 2019
Page 8 of 80
PB2 –Mediport Portable RO Operator Manual
MONITOR and CONTROL SYSTEM
The Control Box contains the electronic components needed to operate the RO. The front panel
has gauges, as well as the following: Operate switch, Low Pressure Alarm Light, Low Pressure
Alarm Reset Button, Water Quality Monitor Mute Button, as well as the Water Quality Monitor’s
display and Mode Switch.
A Water Quality Monitor is a key component of the control box, which monitors and displays
vital information concerning the quality of water. The digital display reports % Rejection, Feed
TDS (total dissolved solids), Product TDS, and Set Point. The monitor’s primary function is to
alert when in a poor water condition and controls product and drain flow direction accordingly.
There are four Gauges for monitoring the various related pressures. These are Filter-In, Filter-
Out, Pump, and Product.
There is a Feed Water Low Pressure Switch located on the suction side of the pump. This
switch, in conjunction with the main control board, will shut down the pump in the event of
insufficient fluid flow through the pump to prevent pump failure.
RO UNIT
The RO unit is housed inside a stainless-steel, insulated box and contains a variety of
components. The components include the membranes, filters, pump, electrical, and plumbing
parts required for the reverse osmosis process as well as distribution.
The Membrane is at the heart of the reverse osmosis process. This membrane is semi-
permeable, allowing water that is being purified to pass through it, while rejecting the
contaminants that remain. The reverse osmosis process uses the membrane to separate and
remove dissolved solids, organics, pyrogens, and submicron colloidal matter from the water. The
process is called “reverse” osmosis since it requires pressure to force water across the
membrane, leaving the impurities behind. Reverse osmosis is capable of removing up to 99% of
the total dissolved solids (TDS), thereby providing safe, and pure water.
Cut-away example of a RO Membrane

Better Water LLC; rev. Jul 2019
Page 9 of 80
PB2 –Mediport Portable RO Operator Manual
A Capsule Filter is used to help reduce bacteria
and endotoxins from the product water (post-
-membrane).It is located inside the PB2
cabinet on the left side.
A 10” Carbon Block Filter is located inside the
PB2 cabinet to reduce chlorine and chloramine
as part of pre-treatment from the feed water prior
to the RO membrane. This cartridge contains
extruded carbon.
A 5 micron Sediment Filter provides another
layer of sediment filtration as part of the pre-
treatment from the feed water prior to the RO
membrane, inside the PB2 cabinet.
The 4” x 21” Membrane is located inside the
PB2 cabinet inside a stainless-steel housing. It
is the heart of the reverse-osmosis process for
water-treatment.
The PB2 uses a stainless-steel Pump covered in a rubber boot to reduce noise. This works in
conjunction with a 1/2" HP Motor to pump water within the PB2 loop.
4” x 21”
Membrane
(inside
stainless-steel
housing)
part#
EQSUBPB2PUMP
Pump Assembly
5 micron
Filter
Capsule
Filter
.10”
Carbon
Block
Filter
Inside Cabinet View
part#
EQMTOO00920
PB2 1/2HP Motor

Better Water LLC; rev. Jul 2019
Page 10 of 80
PB2 –Mediport Portable RO Operator Manual
OPTIONAL ACCESSORIES: Short & Extended Carts
Better Water offers two models of carts to hold the PB2 and various accessories. Both are strong
and lightweight, and includes casters, two of which lock. The extended cart is also designed to
transport the dialysis machine as well.
Short Cart Extended Cart
- H 43.5” x L 28” x W 25.5” - H 43.5” x L 45.5” x W 25.5”
- 63 lbs - 77 lbs
- Part# FXCROO01656 - Part# FXCROO00890
- Mounts the Dialysis Machine and
either carbon tanks or a water
softener.
OPTIONAL ACCESSORIES: Disinfect Jug
This Disinfect Jug makes the disinfect and cleaning
process much easier, by providing a convenient and
efficient way to mix chemical solutions, and connect
the various hoses required during the process.
Comes complete with a Disinfect Hose and Short
Product Adaptor Hose.
OPTIONAL ACCESSORIES: Booster Pump
This pump boosts the incoming water pressure to the
PB2, and mounts onto the top bracket of either cart.
The pump is 1/4HP, single phase, 110 VAC, and has
been adapted to plug directly into the back of the PB2
via a twist-lock connector. Comes complete with the
pump and IN and OUT hoses.
Extended cart shown with
PB2 and Dialysis Machine
part#
EQASSYDISJUG
Disinfect Jug & Hoses
part#
EQSUBPB2BP
Booster Pump Assembly

Better Water LLC; rev. Jul 2019
Page 11 of 80
PB2 –Mediport Portable RO Operator Manual
OPTIONAL ACCESSORIES: Divert-to-Drain
The Divert-to-Drain will automatically divert the product water
from the PB2 to drain when the water quality monitor detects
a poor water condition. It includes a “Good Water Quality”
Light, and connection ports for “Product Out”, “From RO”,
and “To-Drain”.
There is a kit available to retrofit PB2s manufactured prior to 2013 with a new control box, Divert-
to-Drain, and Cart Bracket, whose part# is EQSUBPB2CB/DTD.
OPTIONAL ACCESSORIES: UV Light
UV rays alter the DNA of many common waterborne
bacteria and sterilize them preventing reproduction thus
reducing them. This UV unit consists of a fused quartz
sleeve which seals the lamp from direct water contact.
This sleeve is housed in a stainless-steel treatment
chamber. A power supply is provided which has been
adapted to plug directly into the back of the PB2. Both
the UV Light and its power supply mount to the cart.
OPTIONAL ACCESSORIES: 5 micron Pre-Filter
Additional sediment filtration is available from either a 10” or 20” 5 micron Pre-Filter which
attaches to the cart. It Includes a pressure gauge for monitoring.
part#
EQDTD-PB2
PB2 Divert-to-Drain
part#
EQSUBUVPB2
PB2 UV Light with Power
Supply
part#
EQASSY5.0MICRON
5 micron, 10” Pre-Filter
part#
EQASSY5.0MICRON20
5 micron, 20” Pre-Filter

Better Water LLC; rev. Jul 2019
Page 12 of 80
PB2 –Mediport Portable RO Operator Manual
OPTIONAL ACCESSORIES: 20” Carbon Block Filters
The carbon block filters pre-treat the source
Water to reduce chlorine and chloramines.
Since AAMI standards require a dual bed
solution, which is a worker and polisher,
there are multiple configuration options.
- Dual 20” Carbon Block Filters mounted to
the cart. The internal carbon block filter can
either be used or replaced with a short bowl.
- A Single Carbon Block Filter can also be used in
conjunction with a portable carbon tank.
Part# EQASSY20BB W GAC.
OPTIONAL ACCESSORIES: Portable Carbon Tanks
The Carbon Tanks use GAC carbon to reduce chlorine and
chloramines. Since AAMI standards require a dual bed solution,
which is a worker and polisher, either two tanks are required or a
single tank used in conjunction with an external 20” Carbon Block
filter. The internal carbon block filter can either be used or replaced
with a short bowl. These Carbon Tanks come in either 8”x30” or
9”x42” sizes. NOTE: 9”x42” tanks will not fit on the PB2 carts.
OPTIONAL ACCESSORIES: 8” x 30” Water
Softener with Brine Tank
Water softeners pre-treat the source water to reduce water
hardness (calcium and magnesium) when the feed water is
greater than or equal to 10 grains hardness (171 ppm). The water
softener is regenerated with a salt brine that is made from quality
salt pellets specified for water softening and/or conditioning. The
softener tank can be mounted to the extended cart for
transportability, while the brine tank would be stored in a stationary
location when regeneration is required.
part#
EQASSY20BBDUAL
Dual 20” Carbon Blocks
part#
EQASSYCFRO.8CF830PB2
8”x30” Carbon Tank
EQASSYCFRO.DUAL830
Dual Carbon Tanks 8”x30” for PB2
part#
EQASSYSORO22CAP830
8”x30” Water Softener & Brine Tank
part#
EQASSYCFRO942PB2
9”x42” Carbon Tank
EQASSYCFRO.DUAL942
Dual Carbon Tanks 9”x42” for PB2

Better Water LLC; rev. Jul 2019
Page 13 of 80
PB2 –Mediport Portable RO Operator Manual
OPTIONAL ACCESSORIES: DI Polishing Filter
The DI Polishing Cartridges polishes the product water from the PB2.
This is sometimes necessary when the tap water has a high pH, or when
concentrations of contaminants are too high for the PB2 to remove to
produce AAMI standard water.
The housing would be mounted onto the cart and contains a FDA grade
mixed bed deionization cartridge which has a capacity of 488 grains as
NaCl at a 1 meg cut-off. A resistivity monitor is located on top of the unit.
OPTIONAL ACCESSORIES: Short Bowl for 10” Carbon Block
Filter Housing
If additional external carbon blocks or carbon tanks are used the internal 10” Carbon Block Filter
can be eliminated. A short bowl installed in place of the filter housing.
NOTE about O-ring:
The short bowl uses the same O-ring as the 10” Big Blue Filter Housing. If replacing the standard
filter housing with a short bowl the existing O-ring can be used but it is recommended that a new
O-ring be installed.
part#
PLFIS801951
Short Bowl for 10” Big Blue
Housing
CAUTION
The short bowl SHOULD NOT BE USED if there are no additional external Carbon Tanks
and/or Carbon Blocks used in the pre-treatment of the feed water to the PB2.
part#
SUMIOO00587
Housing /Short Bow l O-ring

Better Water LLC; rev. Jul 2019
Page 14 of 80
PB2 –Mediport Portable RO Operator Manual
OPTIONAL ACCESSORIES: False Tube the for Capsule Filter
If the Capsule Filter is to be replaced with an alternative external filter of greater or equal capacity
a false tube can be used in place of the filter. This false tube has the same type of connections
as the filter and simply installed in place of the filter.
part#
EQSUBPB2FT
PB2 False Tube for the
Capsule Filter

Better Water LLC; rev. Jul 2019
Page 15 of 80
PB2 –Mediport Portable RO Operator Manual
GENERAL REQUIREMENTS & SPECIFICATIONS
General:
a. Capacity 2600 cc’s/min, 1000 gpd minimum
b. Recovery Rate 50%
c. Decibels 55 dB
d. Empty Weight 110 lbs
e. Dimensions Height 31” x Width 21” x Depth 12”
Feed Water Supply Requirements:
The importance of monitoring and controlling the municipal tap water cannot be underestimated.
The condition of the feed water will determine which pre-treatment component devices are
required. The pre-treatment feed water must meet the following parameters:
- 2.2 gpm at 10 psi. A Booster pump is required if less than 10 psi.
- Total Chlorine < 0.1 ppm
- Chloramines < 0.01 ppm
- Silt Density Index (SDI) < 5
- Operating pH Range 3 –11
- Optimum pH Range 5 –8
- Total Iron < 0.1 ppm
- Total Hardness < 10 gpg
- Temperature Range 50°F - 85°F
The PB2 is normally connected to a cold water supply. The performance specifications
are based on 77°F (25°C) feed water temperature. With each degree Fahrenheit drop,
the PB2 product flow will decrease by approximately 1.5%, which is 3% for each degree
Celsius drop. Serious damage can result if the PB2 temperature reaches or drops
below freezing.
Electrical Requirements:
- It is recommended that the PB2 be plugged into a dedicated G.F.I. plug, and be protected
against electrical surges and be on a stable power supply. Do not use power strips or extension
cords. Failure to follow these recommendations can cause the Water Quality Monitor and the
Divert-to-Drain to operate improperly.
- The PB2 should not be operated on an emergency electrical supply or any unstable power
supply that may supply over-voltage or under-voltage.
a. 115 vac, single phase
b. 230 vac, single phase
Electromagnetic Interference:
This equipment generates, uses, and can radiate radio frequency energy. If not used in
accordance with these instructions, it may cause harmful interference to other device in the
vicinity. If such interference can be determined by turning the PB2 on and experiencing
interference, then turning it off and not experiencing interference try the following to correct:
- Reorient, relocate, and/or increase separation between the PB2 and the device
experiencing interference.
- Connect the PB2 to a different electrical circuit than the device experiencing
interference.
Drain Requirements:
- Requires a drain capable of discharging a minimum 2 gallons per minute.
Operating Pressures by Gauge:
- Filter-IN 20-40 psi - Pump 90-150 psi
- Filter-OUT 10-40 psi - Product 0-70 psi

Better Water LLC; rev. Jul 2019
Page 16 of 80
PB2 –Mediport Portable RO Operator Manual