Pura UVB SERIES User manual

INSTALLATION MANUAL & OWNER’S GUIDE
®
ULTRAVIOLET WATER TREATMENT SYSTEMS
UVB SERIES UV20 SERIES
UVBB SERIES RACK SYSTEM
UV1 SERIES ADDON SERIES
36103017 Rev. 5/10

i
INTRODUCTION – DESCRIPTIONS AND DEFINITIONS
You have purchased one of the most technologically advanced Ultraviolet Water Treatment System available anywhere in the world. It
has been designed with you, the consumer, in mind. PURA®products are lightweight, easy to use, and simple to maintain. PURA
products will provide you with healthy, clean drinking water for years to come.
WHAT IS ULTRAVIOLET?
Ultraviolet (UV) light from the sun has long been known for its
ability to destroy microorganisms. However, it has only been in
recent years that equipment producing UV light has been
manufactured for residential use.
WARNING: NEVER LOOK DIRECTLY AT A LIGHTED UV
LAMP. ULTRAVIOLET RAYS CAN BE
HARMFUL TO EYES.
UV energy is produced by low-pressure mercury vapor
enclosed in a tubular lamp. While a UV lamp resembles a
standard fluorescent lamp, it is similar in appearance only.
Energy produced by the UV lamp has the ability to destroy
microorganisms that can live in water. There are five major
groups of microorganisms that are altered by a specific
spectrum of ultraviolet light: viruses, bacteria, fungi, algae, and
protozoa.
When these microbes are exposed to the proper amount of UV
energy, their DNA structure is scrambled, and they are unable
to reproduce. Since the cell is now sterile or dead, it is no
longer a threat.
WHAT IS ACTIVATED CARBON?
Activated carbon has been used for hundreds of years to treat
taste, odor, and color problems in water. Activated carbon has
been proven to be an excellent media to produce better tasting
water and to remove harmful water contaminants at a
reasonable cost.
Carbon used for filters may be manufactured from wood, coal,
or coconut shells. The raw carbon is ground up and “activated”
by heating the granules at a controlled temperature and
pressure.
This process causes the carbon granules to expand and create
active sites where pollutants can be collected by adsorption.
These new sites dramatically increase the total surface area
and capacity of each granule.
WHAT IS ADSORPTION?
Adsorption is the physical process where certain water
pollutants are attached to the surface of carbon particles as the
water flows through the filter. The pollutants are removed from
the water and locked into the carbon granule.
Activated carbon is also able to filter out sediment through a
process of mechanical filtration. The particles are captured in
the spaces between carbon granules.
PURA SYSTEMS
PURA recommends that all UV systems include pre-filters to
process the water before it reaches the UV lamp. This will
ensure that maximum UV exposure is achieved.
PURA UVB, UV20 and UVBB series offers integrated filters in
a single system. These integrated systems use a two-stage
filtration process:
First, a string-wound filter removes the suspended solids that
may shield the microbes and make it difficult to obtain sufficient
UV exposure. Second, an activated carbon filter removes
unpleasant tastes and odors.
PURA Ultraviolet Water Treatment Systems are designed for
indoor use only.
PURA Systems are designed to provide complete water
treatment in a compact, easy-to-use package. Please follow
the directions in this Guide exactly when installing your PURA
System to ensure that it operates correctly.
The UV lamp requires a start-up period of one to two minutes
in order to achieve full intensity. Repeated starting of the UV
lamp will shorten its life. Therefore, it is recommended that
the UV lamp remain on at all times during use.
CONDITIONS FOR USE
Source Water Supply Profile Chemical Parameters Max mg/L
Feed Water Pressure†20 – 75psig (138 – 517kPa) Hardness (CaCO3) < 120 (7 gpg)
Feed Water Temperature 38° – 105°F (3.3°– 40.5°C) Iron (Fe) < 0.3
pH Range 6.5 – 9.5 Manganese (Mn) < 0.05
Total Dissolved Solids <1500 mg/L
Total Suspended Solids < 10 mg/L
Turbidity < 5 NTU
† Water Pressure must not exceed 75 psig
(517 kPa) or a pressure regulator
must be installed.

ii
ROUTINE MAINTENANCE
It is important that any water treatment system be properly maintained to ensure consistent water quality. The information
provided on this page is of a general nature. See Cleaning, Disinfecting, and Routine Maintenance Procedure on Page 14 for
detailed information. Refer to Mounting Bracket and System Plumbing Installation Instructions on Page 1, and the appropriate
System Assembly and Activation Procedures for detailed information to install your specific PURA system.
Cleaning: The inside of the system and the quartz sleeve
should be cleaned each time the filters are changed. Clean
all parts (except the filters and electronic parts) with soap
and rinse them thoroughly with clean potable water. Dry
the inside of the quartz sleeve thoroughly before
re-assembling system.
NOTE: Presence of iron or general poor water quality will
require frequent inspection and cleaning.
“O” Rings: Lubricate each “O” ring with a silicone based
“O” ring lubricant to ensure a proper seal.
NOTE: UV lamp should remain on at all times during use
because; repeated starting of UV lamp shortens
lamp life, and UV lamp requires a warm up period
of 1-2 minutes.
Filter Replacement: Filters will normally last
approximately four to six months. Filter life will vary due to
water conditions. A reduced flow rate or deteriorating water
quality indicates that filters must be changed.
Use only PURA filters. PURA filters are specially
designed to work in the ultraviolet disinfection process.
Use of non-PURA filters voids the warranty.
CAUTION: Use care when changing the filters to avoid
breaking the quartz sleeve.
UV Lamp Replacement: Lamps must be changed every
twelve months. While UV lamps rarely burn out, they do
lose their disinfection power. Use only PURA UV lamps
as they are specifically designed for the PURA system
to deliver high quality drinking water.
PURA ULTRAVIOLET SPECIFICATIONS
Model
Shipping
Weight
lbs. (kg)
Dimensions◊
Inches (Centimeters)
Height x Width x Depth
Flow Rate
Gallons Per Minute
Liters per Minute
Lamp Type
& Power
Used
Watts
Inlet/
Outlet
UVB1 10.0 lbs. (4.5 kg) 15.0” (38.1 cm) x 5.5” (14.0 cm) x 5.5” (14.0 cm)
UVB2 15.0 lbs. (6.8 kg) 15.0” (38.1 cm) x 11.0” (27.9 cm) x 5.5” (14.0 cm)
UVB3 24.0 lbs. (10.9 kg) 15.0” (38.1 cm) x 16.0” (40.6 cm) x 5.5” (14.0 cm)
2 gpm (7.6 L/min) UV Lamp #11
14 Watts
3/8”
NPT†
UV20-1 16.0 lbs. (7.3 kg) 25.0” (63.5 cm) x 5.5” (14.0 cm) x 5.5” (14.0 cm)
UV20-2 24.0 lbs. (10.9 kg) 25.0” (63.5 cm) x 11.0” (27.9 cm) x 5.5” (14.0 cm)
10 gpm (38 L/min)
UV20-3 32.0 lbs. (14.5 kg) 25.0” (63.5 cm) x 16.0” (40.6 cm) x 5.5” (14.0 cm) 8 gpm (30 L/min)
UV Lamp #20
22 Watts
3/4"
NPT†
UVBB-1 20.0 lbs. (9.1 kg) 29.5” (74.9 cm) x 7.5” (19.0 cm) x 9.0” (22.9 cm)
UVBB-2 35.0 lbs. (15.9 kg) 28.0” (71.1 cm) x 15.0” (38.1 cm) X 9.0” (22.9 cm)
UVBB-3 53 lbs. (24.0 kg) 28.0” (71.1 cm) x 23.0” (58.4 cm) X 9.0” (22.9 cm)
15 gpm (57 L/min) UV Lamp #20
22 Watts
1-1/2”
NPT†
UV1 7.0 lbs. (3.2 kg) 13.5” (34.3 cm) x 5.0” (12.7 cm) x 5.0” (12.7 cm) 1 gpm (3.8 L/min) UV Lamp #10
10 Watts
1/2"
NPT†
UV A/O-1 5.0 lbs. (2.3 kg) 12.0” (30.5 cm) x 4.0” (10.2 cm) x 3.5” (8.9 cm) 1 gpm (3.8 L/min) UV Lamp #10
10 Watts
UV A/O-3 7.0 lbs. (3.2 kg) 22.5” (57.2 cm) x 4.0” (10.2 cm) x 3.5” (8.9 cm) 3 gpm (11.4 L/min) UV Lamp #20
22 Watts
3/8
QC‡
†Female thread as recognized by United Sates National Pipe Thread.
‡ Push-in Quick Connectors or Quick Connectors (QC).
◊All dimensions of system do not include inlet/outlet piping connections and are rounded up to the nearest 1/2".

1
WARNING: NEVER LOOK DIRECTLY AT A LIGHTED UV LAMP.
ULTRAVIOLET RAYS CAN BE HARMFUL TO EYES.
ALWAYS SHUT OFF WATER TO SYSTEM AND DISCONNECT POWER WHEN SERVICING.
ASSEMBLY IS REQUIRED BEFORE INSTALLATION. FRAGILE PARTS INSIDE.
FOLLOW INSTRUCTIONS CAREFULLY!
The system must be installed in accordance with applicable city, country, and local plumbing codes.
PURA products are designed to provide years of trouble-free service if properly maintained.
Retain these instructions for future reference.
MOUNTING BRACKET AND SYSTEM PLUMBING INSTALLATION
This Guide covers installation and maintenance of a basic “generic” system. Installer determines configuration of each
system and must adapt these instructions to meet the specific requirements for that configuration. Specific component
and assembly information is provided only for components that are unique to PURA systems. All inter-component
connections use standard plumbing components and tools.
INSTALL MOUNTING BRACKET
CAUTION: Do not use any damaged component.
If damage is found, contact your dealer
before proceeding.
1. Unpack boxes and verify that all required
components have been received (see Preparation
section for your particular series).
2. Inspect each component for damage.
3. Determine location for installation of the UV system:
a. The PURA UV System should be installed with
the sumps oriented vertically.
CAUTION: The UV system may be installed
horizontally, but the quartz sleeve
will be in a position that makes it
susceptible to breakage.
b. Mounting point should allow sufficient room
above and below UV system to service the
sumps and UV lamp without removing the
UV system.
The minimum space is:
UVB: 11” (above and below)
UV20, UVBB: 20” (above and below)
UV1: 10” (above and below)
ADDON: 10” or 20” (above) by model
4. For ease of mounting, reduce the weight of the
larger systems by removing the sumps and filters
prior to installing the mounting bracket.
5. Select a location and install the mounting bracket
using the provided screws.
INSTALL SYSTEM PLUMBING
CAUTION: Water pressure must not exceed 75 psig
(517 kPa) or a pressure regulator must be
used.
CAUTION: Do not install pump on outlet side of system
as damage to the quartz sleeve may occur.
If pump is required, install it on inlet side of
system and verify output pressure does not
exceed 75 psig (517 kPa).
CAUTION: Warranty is void if the unit is used with
pressure exceeding 75 psig (517 kPa).
Higher pressures may damage equipment
and may not allow for proper exposure time
with UV lamp or both.
CAUTION: The system will not function properly if water
flow is reversed. See the Exploded
Schematic for your model on the following
pages to ensure proper flow direction.
1. Turn off source water supply.
CAUTION: PURA recommends using only plastic
fittings to connect the inlet and outlet ports of
the PURA system. Use of metal male
fittings inside of plastic female threaded
heads voids the warranty.
CAUTION: Do not over tighten fittings connected to
inlet/outlet ports of the PURA system.
2. Connect inlet of UV system to source water supply
using proper fittings and thread sealing tape.
3. Connect outlet of UV system to water distribution
lines using proper fittings and thread sealing tape.
CAUTION: Do not install clear or translucent tubing on
the outlet side.
4. See appropriate System Assembly and Activation
Procedures for your system to complete installation.

8
UVBB SERIES - SYSTEM ASSEMBLY AND ACTIVATION PROCEDURES
PREPARATION – INSPECT ALL PARTS
NOTE: Read Mounting Bracket and System Plumbing
Installation instructions on Page 1 and all
instructions on this page before installing system.
UVBB SERIES
UVBB Ultraviolet System
Control Module Box
Ultraviolet Lamp #20 (in packing tube)
Quartz Sleeve #22 (in packing tube)
Mounting Screws (2-4 pieces, varies with model)
Installation Manual and Owners Guide
Sump Wrench #20BB
NOTE: See Page 7 for UVBB detailed parts breakdown.
Refer to label affixed to the mounting bracket to
identify filter(s) to be installed with UV module.
Control Module Installation
Figure 3A - * UVBB-3 model shown
INSTALL QUARTZ SLEEVE AND DISINFECT SYSTEM
Check page 20 for pictures of Quartz Sleeve.
CAUTION: QUARTZ SLEEVE IS VERY FRAGILE!
For safety, wear a protective glove when
handling quartz sleeve. Do not touch quartz
sleeve or UV lamp with bare hands. Fingerprints
will reduce the effectiveness of the light.
NOTE: All Items refer to Figure 3.
1. Remove UV Sump (Item 1) from UV Head (Item 5).
NOTE: A band of Red Tape (Item 23) is affixed to quartz
sleeve approximately 3” from the top. Do not remove
this tape until so instructed. Do not remove protective
plastic bag from quartz sleeve until so instructed.
2. Remove Quartz Sleeve (Item 17) from packing tube.
While holding middle of quartz sleeve with one hand, slide
protective bag with other hand to expose open end.
3. Place a small amount of silicone based “O” ring lubricant
on the outside of the open end of the quartz sleeve only
on the area that will engage with the “O” ring.
CAUTION: Apply even pressure to push the quartz sleeve
into Quartz Adapter Sleeve (Item 4). To avoid
breakage, make sure quartz sleeve goes in
straight by pushing it with a slight twisting motion.
4. Insert quartz sleeve into quartz adapter sleeve until the top
of red tape meets the bottom of the quartz adapter sleeve.
NOTE: Quartz Adapter Sleeve (Item 4) is factory
installed into the UV Head (Item 5).
5. Remove Red Tape (Item 23) and protective bag from
quartz sleeve.
NOTE: Wipe all fingerprints and excessive lubricant from
quartz sleeve with isopropyl alcohol.
6. For UVBB-2 and UVBB-3 Models only:Remove
Sump (Item 1) from Filter Head (Item 20). Remove
Filters (Items 21 and 22) from sump and set aside.
7. Disinfect the system (Pages 15-16, Steps 1-7).
INSTALL ULTRAVIOLET LIGHT AND FILTERS
CAUTION: TIGHTEN SUMPS BY HAND ONLY. Do not use
tools as they will over-tighten and may damage
sump. Take care not to cut or pinch “O” Rings
(Item 2). Use sump wrench for removal only.
8. For UVBB-2 and UVBB-3 Models only:Remove Sump
(Item 1) from Filter Head (Item 20). Install Filters
(Items 21 and 22) as shown in Figure 3. Install sump onto
filter head.
CAUTION: DO NOT INSTALL A DAMAGED LAMP
INSTALL CONTROL MODULE AND UV LAMP
NOTE: Hold UV lamp by ceramic ends only. Do not touch the
glass. Clean glass with isopropyl alcohol if necessary.
9. Remove UV Lamp (Item 16) from packing tube and
inspect it for damage. If damage is found, contact the
dealer for a replacement.
10. Unpack the carton box and verify that all the required
components have been received.
The UVBB control module installation kit includes:
a) Control Module – Qty 1
b) Screws , 6/32 X 3/8” (Part# 32701063) - Qty 4
c) Washer, Lock , #8 (Part# 12288) - Qty 1
d) Installation Guide (#54752)
11. Connect UV lamp into four-pin socket that is connected to
the UV control module by a cable that allows for correct
insertion depth.
12. Carefully insert the UV control module with UV lamp
through mounting bracket into the quartz sleeve making
sure the cable does not twist or curl.
13. Install the UVBB control module on top of the ultraviolet
disinfection system’s bracket with four screws and one
lock washer (for grounding purpose) as shown in the
Figure* 3A.

9
ACTIVATE SYSTEM
CAUTION: Verify that inlet and outlet ports are connected to
appropriate inlet/outlet pipes (see Figure 3).
1. Plug system into an electrical outlet. If the LED Indicator
(Item 8) does not light up within one minute, verify UV
lamp is securely plugged into UV control module. It is
normal for the LED indicator to flicker slightly.
NOTE: The UV lamp should remain on at all times during use
because; repeated starting of UV lamp shortens
lamp life, and UV lamp requires a warm up period
of 1-2 minutes.
2. Turn on water supply and check for leaks.
3. Flush system, connectors, and water lines for several
minutes to remove carbon fines.
NOTE: When an ultraviolet water treatment system is unused
for several hours, water within system could become
warm. This is a normal condition. To cool the water,
dispense water from system.
NOTE: System is now ready for use.
Service Requirements Recommended Service Intervals
To ensure the system operates at its optimum level, certain routine
maintenance must be performed.
Frequency of maintenance performance will depend on source water
quality and level of system usage.
CLEAN: Each time filters are replaced.
DISINFECT: At least once a year
UV lamp #20: Change Annually
Quartz Sleeve #22: Clean when changing filters. Replace only if
damaged or cannot be cleaned by non-abrasive methods.
Filters: Normal life 4-6 months. Filter life will vary due to water
conditions. A reduced flow rate or deteriorating water quality indicates
that filters must be changed.

18
CLEANING, DISINFECTING, AND ROUTINE MAINTENANCE PROCEDURE
RECOMMENDATIONS
HAVE ALL COMPONENTS ON HAND AND READY BEFORE BEGINNING PROCEDURE
A CLEAN WORK AREA AND EQUIPMENT ARE ESSENTIAL TO PROPERLY CLEAN AND/OR DISINFECT THE SYSTEM
(i.e., CLEAN HANDS, TOOLS, WORK SURFACE, AND CONTAINERS)
EQUIPMENT NEEDED
Safety Glasses
Rubber Gloves, Sanitary
Wash Cloth, Clean and Lint-Free
Liquid Dish Soap
Household Bleach – Unscented Only
(5 ¼% Sodium Hypochlorite)
Plastic Bucket
“O” Ring Lubricant, Silicone Based
REPLACEMENT FILTERS REPLACEMENT UV COMPONENTS
Refer to system Parts List for specific component part numbers Refer to system Parts List for specific component part numbers
CLEANING PROCEDURE
NOTE: Refer to individual System Assembly and Activation
Procedures to identify specific components matching
the descriptions shown in this procedure.
1. Disconnect system from electrical outlet.
2. Mix a mild cleaning solution of dish soap and clean
potable water in the plastic bucket.
3. Close feed water supply valve and open downstream
faucet to relieve system pressure.
CAUTION: Do not attempt to remove sumps until water flow
stops. This reduces pressure inside the system
so sumps may be safely removed.
NOTE: For UVB and UV1 Models only: Remove and save
Teflon Sleeve as it will be used again with
replacement EPCBCarbon Filter.
4. Remove each sump. Remove each filter as its sump is
removed. Discard the filters. Use sump wrench
to remove stubborn sumps.
NOTE: Use sanitary rubber gloves for this procedure to avoid
contaminating cleaning solution or filters. Wear
gloves
whenever cleaning components or handling
new
filters.
5. Clean quartz sleeve carefully using vinegar to remove
hardness. Do not use abrasive materials. Rinse sleeve
thoroughly with clean potable water. Replace any
sleeve that is damaged or will not come completely clean.
6. Remove sump “O” rings and wash with cleaning solution.
Rinse them well with clean potable water. Inspect “O”
rings for damage (i.e., nicks or scratches). Replace
damaged “O” rings.
CAUTION: Use care when cleaning UV head. Do not get the
UV control module or connectors wet.
7. Clean sumps and heads, inside and outside with
washcloth and cleaning solution. Do not use abrasive
materials.
8. Rinse sumps and heads with clean potable water.
9. For UV20 Model only: Clean and rinse the
Stainless Steel Channeling Sleeve (Item 3) and
Sleeve Gasket (Item 4) shown in Figure 2.
10. Inspect head and sump “O” ring groove area for damage
(i.e., nicks or scratches). Replace damaged components.
11. Place a small amount of silicone based “O” ring lubricant
on the filter sump “O” ring. Install the “O” ring into the filter
sump groove.
DISINFECTION PROCEDURE
CAUTION: WEAR SAFETY GLASSES AND SANITARY
RUBBER GLOVES WHILE PERFORMING THIS
PROCEDURE.
CAUTION: EXCESSIVE CONCENTRATIONS OF
BLEACH WILL DAMAGE PLASTIC AND
RUBBER COMPONENTS. Rinse all parts
that contact bleach thoroughly with clean
potable water.
CAUTION: Read the "WARNINGS" on the bleach container
before using.
CAUTION: Handle sanitizing solution carefully. Avoid
contact with unprotected areas.
1. Disconnect system from electrical outlet.
2. Mix sanitizing solution:
a. For UVB, UV1, and Addon Models only :
Mix 59 ml (1/4 cup) of household bleach and 177 ml
(3/4 cup) of clean, potable water in the bucket. Mix
the solution well.
bFor UV20 and UVBB Models only:
Mix 237 ml (1 cup) of household bleach and
237 ml (1 cup) of clean, potable water in the bucket.
Mix the solution well.
CAUTION: Use care when sanitizing UV head. Do not
get the UV control module or connectors wet.
CAUTION: TIGHTEN SUMPS BY HAND ONLY. Do not use
tools as they will over-tighten and may damage
sump. Take care not to cut or pinch “O” rings or
gaskets. Use sump wrench for removal only.
3. Add sanitizing solution into system:
a. For UVB, UV1, and Addon Models only:
Add 237 ml (1 cup) of sanitizing solution to the
sump that contains the UV lamp.
b. For UV20 and UVBB Models only:
Add 473 ml (2 cups) of sanitizing solution to the sump
that contains the UV lamp.

19
4. Slowly open the feed water supply valve.
5. Open all downstream faucets. Keep faucets open until a
chlorine smell is detected at each faucet, then close
faucets.
NOTE: Water lines downstream from UV housing must be
disinfected to destroy any bacteria that might
remain in the pipes.
6. Verify disinfection solution has reached every water outlet
downstream of UV system. Solution must remain in the
system for at least four hours.
7. Open outlet valve and let water flow for 5 minutes to flush
disinfection solution from the water lines.
ROUTINE MAINTENANCE
FILTER REPLACEMENT PROCEDURE
1. Perform Cleaning Procedure (Page 15, step1-11).
NOTE: Do not remove protective plastic bag from filters.
Open bottom of bag only enough to expose
bottom of filter.
NOTE: Refer to Exploded Schematic for your system to
ensure each filter is installed in the correct position.
NOTE: For UVB and UV1 Models only: Refer to the
Exploded Schematic to ensure proper position of
Teflon Sleeve removed in Cleaning Procedure.
2. Install the filters into the appropriate sump. Hold filter by
its protective plastic bag and insert the filter into the sump.
CAUTION: For UVBB Model only: Be sure sump with
metal liner is installed onto UV head.
CAUTION: TIGHTEN SUMPS BY HAND ONLY. Do not use
tools as they will over-tighten and may damage
sump. Take care not to cut or pinch “O” rings or
gaskets. Use sump wrench for removal only.
3. Slide bag from filter and discard. Replace each sump as
each filter is installed.
4. Plug system into electrical outlet. Turn on water supply
and check for leaks. Flush system for several minutes to
remove carbon fines.
ROUTINE MAINTENANCE
UV LAMP REPLACEMENT PROCEDURE
NOTE: Refer to individual System Assembly and Activation
Procedures to identify specific components matching
the descriptions shown in this procedure.
1. Disconnect system from electrical outlet.
2. Shut feed water supply valve and open downstream faucet
to relieve system pressure.
CAUTION: Do not attempt to remove sumps until water
flow stops. This reduces pressure inside the
system so sumps may be safely removed.
CAUTION: Use care when sanitizing UV head. Do not get
the UV control module or connectors wet.
3. Remove sump from UV head and set aside.
CAUTION: Do not touch quartz sleeve or UV lamp with bare
hands. Fingerprints will reduce the effectiveness
of the light.
WARNING: Do Not Attempt to Remove Quartz Sleeve.
Damage to system and personal injury may
occur if the sleeve is removed incorrectly.
Contact your dealer if quartz sleeve is broken or
needs replacement.
4. Clean quartz sleeve carefully using vinegar to remove
hardness. Do not use abrasive materials. Rinse sleeve
thoroughly with clean potable water. Replace any sleeve
that is damaged or that will not come completely clean.
5. Gain access to UV lamp:
a. For UVB, UV20, and UVBB Models only. Remove
UV Control Module (Item 10) from Mounting Bracket
(Item 6, 6A, 6b) by removing four Screws (Item 11).
b. For UV1 Model only: Loosen Screw (Item 9)
securing slotted side of UV Lamp Retainer (Item 7).
Remove other screw securing UV lamp retainer to UV
head. Rotate bracket away from UV lamp. Remove
and slide Finish Cap (Item 12) on cable towards UV
control.
6. Remove UV lamp from system being careful not to break
UV lamp or dislodge quartz sleeve:
a. For UVB and UV20 Models only: Remove UV
control module with UV lamp by gently lifting control
module straight up from mounting bracket. Grasp UV
lamp firmly and remove lamp from the four-pin socket.
b. For UVBB Model only: Remove UV control module
with UV lamp by lifting the control module straight up
from mounting bracket. The four-pin socket is
attached to the UV control module by a short cable
that allows for correct insertion depth. Grasp UV
lamp and four-pin socket firmly and separate lamp
from connector.
c. For UV1 and Addon Models Only: Remove UV
lamp by gently lifting the cable connecting the four-pin
socket to the UV lamp. Grasp UV lamp and four-pin
socket firmly and separate lamp from connector.
During replacement, be sure UV lamp is inserted as
far as possible into the quartz sleeve.
NOTE: The inside of quartz sleeve must be completely dry
before installing the replacement UV lamp.
NOTE: Hold replacement UV lamp by the ceramic ends only.
Do not touch the glass. Clean glass with isopropyl
alcohol if necessary.
7. Install the replacement UV lamp by reversing
steps 5 and 6 of this procedure.

20
INSTALL QUARTZ SLEEVE
CAUTION: QUARTZ SLEEVE IS VERY FRAGILE!
For safety, wear a protective glove when
handling quartz sleeve. Do not touch quartz
sleeve or UV lamp with bare hands. Fingerprints
will reduce the effectiveness of the light.
1. Remove Sump from UV Head.
NOTE: Do not remove protective plastic bag from quartz
sleeve until so instructed.
2. Remove Quartz Sleeve from packing tube. While holding
middle of quartz sleeve with one hand, slide protective bag
with other hand to expose open end.
3. Place a small amount of silicone based “O” ring lubricant
supplied in the small packet on the outside of the open end
of the quartz sleeve only on the area that will engage with
the “O” ring.
CAUTION: Apply even pressure to push the quartz sleeve
into the UV head. To avoid breakage, make
sure quartz sleeve goes in straight by pushing it
with a slight twisting motion.
5. Insert quartz sleeve into the UV head. As quartz sleeve
passes “O” Rings, resistance will be felt. Remove
protective bag from quartz sleeve.

21
PURA®
LIMITED WARRANTY
Subject to the conditions and limitations described below, the manufacturer warrants its ultraviolet drinking water
systems (“Product”) (excluding filters) when installed in accordance with PURA®specifications, to be free from defects
in materials and workmanship under normal use within the operating specifications for a period of (3) years from the
date of purchase with the exception of the electrical components which are warranted for (1) year. This warranty shall
apply only to the original end-user of the Product.
If the Product or any warranted component is found defective, the manufacturer, at its sole option, will repair or replace
such Product or warranted component, or will refund all or a pro-rata portion of the Product’s purchase price. You pay
only freight for repaired or replaced parts from our factory and local dealer charges, including but not limited to labor
charges, travel and transportation expenses, and handling fees.
This warranty shall not apply to any part damaged by accident, fire, flood, freezing, Act of God, bacterial attack, filter
fouling and/or scaling, sediment, misapplication, neglect, alteration, installation, or operation contrary to our printed
instructions, or by use of accessories or components which do not meet PURA specifications. If the drinking water
system is modified by anyone other than an authorized PURA dealer, the warranty shall be void.
ALL IMPLIED WARRANTIES, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE PERIOD SPECIFIED ABOVE FOR
PRODUCT AND COMPONENTS DESCRIBED IN THIS LIMITED WARRANTY.
As a manufacturer, we do not know the characteristics of your water supply. The quality of water supplies may vary
seasonally or over a period of time. Your water usage may vary as well. Water characteristics can also change if the
Product is moved to a new location. For these reasons, we assume no liability for the determination of the proper
equipment necessary to meet your requirements, and we do not authorize others to assume such obligations for us.
Further, we assume no liability and extend no warranties, expressed or implied, for the use of this product with a water
source that does not meet the Conditions For Use in the Installation Guide & Owner’s Manual.
THE MANUFACTURER’S OBLIGATIONS UNDER THIS WARRANTY ARE LIMITED TO THE REPAIR OR
REPLACEMENT OF THE FAILED PRODUCT OR COMPONENTS OR THE REFUND OF THE PURCHASE PRICE
(AT WATERGROUP’S OPTION), AND WE ASSUME NO LIABILITY WHATSOEVER FOR DIRECT, INDIRECT,
INCIDENTAL, CONSEQUENTIAL, SPECIAL, GENERAL, OR OTHER DAMAGES, WHETHER FROM CORROSION
OR OTHER CAUSES.
Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not
apply to you. Similarly, some states do not allow exclusion of incidental or consequential damages, so the
above limitations or exclusions may not apply to you. This warranty gives you specific legal rights, and you
may also have other rights, which vary from state to state. Consult your authorized PURA Dealer for warranty
and service information.
WaterGroup Inc. WaterGroup Companies Inc.
193 Osborne Road
Fridley, MN
U.S.A. 55432
580 Park Street
Regina, SK
Canada, S4N 5A9
265 Industrial Road
P.O. Box 5000
Cambridge, ON
Canada N3H 5N3
U.S. Patent #6,740,235
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