Operating Temperature Range36 to 104° F (2 to 40° C)
Electrical100-240V - 50/60Hz
Electrical PlugNorth American
5.5 (20.79)7.8 (29.48)12 (45.36)
12 (45.36)18.8 (71)26 (98.28)
6.4 (24.2)10 (37.8)13.9 (52.5)
4.8 (18.14)7.5 (28.35)10.4 (39.31)
Dimensions
A inches (cm)17.32 (44)23 (58.5)31.5 (80)
B inches (cm)2.5 (6.35)2.5 (6.35)2.5 (6.35)
C inches (cm)4.33 (11)4.33 (11)4.45 (11.3)
D inches (cm)21.65 (55)27.56 (70)36.61 (93)
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 deactivate 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.
A
D
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.
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 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.
B
C
2
Safety Instructions
WARNING:
To guard against injury, basic safety precautions should be observed, including the following:
1. Read and follow all safety instructions.
2. CAUTION - Always disconnect power before servicing.
3. DANGER - To avoid possible electric shock, special care should be taken since water is present near electrical equipment. Unless a situation is encountered that is explicitly addressed by the provided maintenance and troubleshooting
sections, do not attempt repairs by yourself, refer to an authorized service facility.
4. Carefully examine the disinfection system after installation. It should not be plugged in if there is water on parts not
intended to be wet such as, the ballast or lamp connector.
5. Do not operate the disinfection system if it has a damaged cord or plug, if it is malfunctioning or if it has been dropped
or damaged in any manner.
6. Always disconnect water flow and unplug the disinfection system before performing any cleaning or maintenance
activities. Never yank the cord to remove from an outlet; grasp the wall plug and pull to disconnect.
7. Do not use this disinfection system for other than intended use (potable water applications). The use of attachments not
recommended or sold by the manufacturer/distributor may cause an unsafe condition.
8. Intended for indoor use only. Do not install this disinfection system where it will be exposed to the weather or to temperatures below freezing. Do not store this disinfection system where it will be exposed to the weather or to temperatures
below freezing unless all water has been drained from it and the water supply has been disconnected.
9. Read and observe all the important notices and warnings on the water disinfection system.
10. If an extension cord is necessary, a cord with a proper rating should be used. A cord rated for less Amperes or Watts
than the disinfection system rating may overheat. Care should be taken to arrange the cord so that it will not be tripped
over or pulled. Circuit breaker must not exceed power cord current rating (ie - 15A for North American NEMA 5-15P).
11. SAVE THESE INSTRUCTIONS
WARNING:
The UV light given off by this unit can cause serious burns to unprotected eyes and skin. Never look directly at an illuminated
UV lamp. When performing any work on the UV disinfection system always unplug the unit first. Never operate the UV system
while the UV lamp is outside of the UV chamber.
Note: The UV lamp inside the disinfection system is rated at an effective life of approximately 9000 hours. To ensure
continuous protection, replace the UV lamp annually.
Conditions For Use
Iron (Fe) < 0.3 ppm (0.3 mg/L)
Hardness* < 7 gpg (120 mg/L)
Turbidity < 1.0 NTU
Manganese (Mn) < 0.05 ppm (0.05 mg/L)
Tannins < 0.1 ppm (0,1 mg/L)
UV Transmittance > 75%**
IMPORTANT: Water quality is extremely important for the optimum performance of your UV system. The following levels are
recommended for installation:
If your water chemistry contains levels in excess of those mentioned above, proper pre-treatment is recommended to correct these water problems prior to the installation of your UV disinfection system. These water quality parameters can be
tested by your local dealer, or by most private analytical laboratories. Proper pre-treatment is essential for the UV disinfection
system to operate as intended.
* Where total hardness is less than 7 gpg, the UV unit should operate efficiently provided the quartz
sleeve is cleaned periodically. If total hardness exceeds 7 gpg, the water should be softened.
**Call customer service for recommendations on applications where UVT < 75%.
3
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 in this user
guide.
Cleaning: The inside of the system and the quartz sleeve should be cleaned bi-annually. Clean all parts (except the 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. Ring: Lubricate each .O - ring with a silicone based lubricant (Part # 92360) 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.
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.
Installing PURA Disinfection System
CAUTION
Electronic ballast must be connected to a grounded receptacle.
• The disinfection system is designed to be mounted either horizontally or vertically at the point-of-use or point-of-entry
depending on the specific flow rate of the unit.
• The complete water system, including any pressure or hot water tanks, must be sterilized before start up by flushing with
chlorine (household bleach) to destroy any residual contamination
• For safety purposes, the disinfection system should be connected to a ground fault interrupt circuit.
• The disinfection system is intended for indoor use only, do not install disinfection system where it may be exposed to the
outdoor weather.
• Install the disinfection system on cold water line only.
• If treating the entire house, install the disinfection system before any branch lines.
• A 5 micron sediment filter must precede the disinfection system. Ideally, the disinfection system should be the last treat-
ment the water receives before it reaches the faucet.
Typical Installation
Bypass Assembly
5 Micron Sediment Filter
Water Supply
Figure 1 - Typical installation of disinfection system and the related components that may be used for the installation
4
Softener
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