UV Pure Technologies CACTUS User manual

Owners Manual
UV Pure Technologies Inc.
WATER PURIFICATION SYSTEM
MODEL: CACTUS

Conforms to UL60335-1E:04.
Certified to CAN/CS
A
-E60335-1/4E:03

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OWNERS MANUAL
Copyright UV Pure Technologies Incorporated 2010
All rights reserved. No part of this document may be photocopied, reproduced,
transmitted or translated to another language without the prior written consent of
UV Pure Incorporated.
Crossfire Technology® is a registered trademark of UV Pure Technologies Inc.
Publication Number: Z800011A
First Edition, March, 2010
Notice
THANK YOU for purchasing a UV Pure Technologies water purification
system Model CACTUS.
Please read the complete manual before installing or operating. Retain this
manual and the purchase receipt for the unit.
This UV system is engineered to provide effective UV dosage rates for the
inactivation of pathogens, including:
•viruses •legionella
•bacteria
•cryptosporidium
•giardia
•E. coli
•Total coliforms
To be effective, the system must be installed in applications that meet minimum
pre-treatment specifications.
1. About the UV System
Cactus systems incorporate patented Crossfire Technology.
Patented in US 6,707,048, Australia 2,002,333,084, Mexico 248805
Patent Pending in Canada, Japan, UK, Europe & Eurasia
Patents are owned by UV Pure Technologies Inc.
Crossfire Technology incorporates two proprietary high-output UV lamps, with
elliptical reflectors, that target pathogens with radiation from 360º, to reduce UV
shadowing and provide microbiologically safe drinking water.
Changing lamps in the Cactus is as simple as opening the front of the system.
There is no draining, no disassembly and no risk of quartz breakage. The UV
lamps require replacement after 12 months of operation.

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1. About the UV System.............................................................................2
2. Installation Instructions.........................................................................4
Before Beginning Installation......................................................................4
Water Conditions - Pre-treatment Parameters ...........................................4
Safety Information ......................................................................................5
Parts Included ............................................................................................6
Other Materials Needed .............................................................................6
Tools Needed.............................................................................................6
Location (on a wall) ....................................................................................6
Time Required............................................................................................7
Assembling the Cactus...............................................................................8
Connecting the Pipes .................................................................................9
Parallel Installation .....................................................................................9
Locating the Receptacle and Optional TVSS ...........................................11
Plugging in the Cactus .............................................................................11
Flushing Instructions ................................................................................12
3. Operating Instructions.........................................................................12
Starting the Unit .......................................................................................13
Transient Voltage Surge Suppressor .......................................................13
Shutting Down the Cactus and Seasonal Use..........................................14
Disinfecting the Plumbing.........................................................................14
4. Troubleshooting...................................................................................15
5. Maintenance 17
Replacing and Cleaning UV Lamps .........................................................17
Draining the Unit ......................................................................................19
Cleaning the Unit......................................................................................19
Inspection Procedure for Quartz Sleeve...................................................20
In-place Cleaning .....................................................................................21
Disassembling the Unit.............................................................................22
Removing and Cleaning the Quartz Sleeve .............................................24
Reassembling the Unit .............................................................................25
Replacement Parts...................................................................................26
6. Service Record Sheet ..........................................................................27
7. Limited Warranty..................................................................................28

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2. Installation Instructions
Before Beginning Installation
Water Conditions - Pre-treatment Parameters
Note: it is very important that the Cactus is installed in conditions that meet the
minimum specifications for pre-treatment. Please review the following pre-
treatment parameters prior to installation.
Some of the specifications are technical in nature. If any specifications are of
concern or unclear, please contact your dealer.
IMPORTANT - IF THE CACTUS SYSTEM IS INSTALLED IN CONDITIONS
THAT DO NOT MEET THE SPECIFICATIONS, IT MAY VOID THE
MANUFACTURER’S WARRANTY.
Water Parameters for Treating Drinking Water:
The minimum water requirements for operating the CACTUS are:
•UV Transmittance – more than 85 percent transmission of ultraviolet
light. (If there is color in the water, the UV transmittance may fall below
85 % and the system will not provide the necessary UV dose for safe
drinking water.) It is recommended the water be tested for UV
transmittance in any applications using cisterns, surface water or
ground water under the influence of surface water.
•Level of Turbidity - or cloudiness - of less than or equal to 1 NTU
(nephelometric turbidity unit). A 5 micron sediment filter is
recommended before the unit to reduce turbidity. (The presence of a
filter will also simplify disinfection of plumbing – see Disinfecting the
Plumbing. For surface waters, a dual gradient 20 micron prefilter is also
recommended.)
•Hardness – Hardness must be less than 7 grains (120 mg/L)
•Total Iron – Total iron must be less than 0.3 ppm (0.3 mg/L)
Cactus Performance at 85% UVT with 12 month old lamps
0
10
20
30
40
50
60
0 5 10 15 20 25
Flow (US gpm)
Dose (mJ/cm
2
)
X-12X-8
Chart 1

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UVUVUV
Water Treatment Capacity:
The water treatment flow range for the Cactus X-8 is 0-8.7 U.S. gallons per
minute (or 0 – 33 liters per minute) maximum. For the Cactus X-12, the flow
range is 0-13.3 U.S. gallons per minute (or 0 – 50.4 liters per minute) maximum
The working pressure of the units is 0 to 100 psig (or 0 to 690 kPa). Chart 1
shows the Treatment Performance of the Cactus at 85% UV Transmittance
(UVT) and at the end of lamp life (EOLL).
Temperature Requirements:
Where the unit is installed, the ambient air temperature should be between 34°F
to 95°F (1º C to 35°C). If the temperature drops below freezing, drain the unit
completely to prevent damage (see Draining Instructions page 19). The
acceptable water temperature range is 34°F to 95°F (1ºC to 35°C).
Energy Requirements:
The standard operating voltage for Cactus system is 120 VAC, 60 Hz. The power
consumption of the units is 93W for the X-8, and 114W for the X-12
UV Pure recommends that the Cactus unit be connected to a Transient Voltage
Surge Suppressor (TVSS)/Surge Protective Device (SPD) certified to the UL
1449 standard by an NRTL/C that includes integral Over/Under Voltage shutoff
that is plugged into a ground power outlet. Failure to plug the Cactus into a
power conditioner that meets specifications as indicated may void the
Manufacturer’s Warranty.
Safety Information
WARNING:Potential Shock Hazard
Use only a grounded electrical outlet when connecting the supplied
power conditioner to a power source. If you do not know whether the
outlet is grounded, check with a qualified electrician. Do not plug in
the Cactus if water has been spilled on the exterior surface of the
system.
WARNING: Ultraviolet Light Hazard
The lamps in the UV system emit ultraviolet (UV) light that can cause
permanent damage to the skin & eyes. Never look at the lamp
when it is operating. Do not plug the Cactus in unless it is properly
secured to a wall (see Installation Instructions) and the front panel
and ballast enclosure are secure. Do not open the front panel or
perform any service unless the Cactus has been unplugged. Never
look into the unit or place any exposed skin into the illuminated areas
when it is operating. Do not operate a Cactus that has been
damaged or missing any components or safety devices.
The Cactus is not intended for use by young children or infirm
persons without supervision. Young children should be supervised
to ensure that they do not play with the UV system.

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Parts Included
•Cactus UV water purification system, complete with integral wall
brackets, instruction manual
•Power cord (located within packaging)
•Ultraviolet lamps (two) – installed in the Cactus
•Anti-Fouling System
Other Materials Needed
The UV requires four #12 to 1/4” diameter fasteners (not provided) to mount to a
wall. It also requires female 1” NPT fittings for the manifold connections.
These fittings, pipe insulation, and any piping compatible with the plumbing
should be on hand before you begin installation. See Figure 1B and make a list
of all necessary components including solder, paste and thread sealant. By-pass
piping and valves that isolate the unit are optional, (but recommended) as is a
drain valve for draining the unit. Using a union or a flexible stainless hose at the
top and bottom port of the unit is recommended to allow easier maintenance of
the unit.
Pipe insulation should be wrapped around the top piping, above the
system, to prevent condensation from dripping back onto the unit.
Tools Needed
•Pipe cutter, torch, wrench and other typical plumbing tools for modifying
piping
•Slotted screwdriver
Do not operate a Cactus UV System that has been damaged or that is missing
any components. If a part is missing, contact your dealer.
The installation (see Figures 1A through 1E) should be done in compliance with
all applicable federal, state/provincial and local regulations. Failure to install the
Cactus properly may result in property damage (leaks/flooding) or personal injury
(electrical shock) and will void the Manufacturer’s Warranty.
Location (on a wall)
The Cactus must be positioned vertically on a wall. (The performance of the
system will be adversely affected if mounted horizontally.) See Figure 1A for
clearances.
The Cactus is intended only for indoor use in a dry location. Should these
minimum installation recommendations not be met, the system will not operate
effectively.
The Cactus should be installed downstream of (after) any pre-treatment
devices such as filters, water softeners and any pressure tanks. However, it
must be installed upstream of (before) any branches in the piping so that all
the water is disinfected before splitting and distributing throughout a home or

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FRONT
PANEL
WATER OUT, Ø
WATER IN, Ø
CLEARANCE REQUIRED
TO REMOVE QUARTZ
QUARTZ
SLEEVE
7.5"
[191mm]
7.8"
[198mm]
3.5"
[89mm]
15.7"
[399]
11.0"
[279]
X-8
X-12
1"
1"
27.3"
[694]
17.9"
[455]
32"
[813]
22.5"
[572]
16.9"
[428]
20.1"
[510]
NPT MALE
WOOD
Figure 1A
building. If the plumbing system has a grounding lug or strap, this should also be
upstream from the Cactus. If grounding or plumbing of the UV Pure Cactus
System is in question, please consult your local electrical inspector.
Time Required
Please note that full installation of the UV requires shutting off the main water
supply for up to several hours. If disinfection is necessary, all pipes must be
treated and flushed. Once the Cactus is plugged in and turned on, the new UV
lamps usually take 2-3 hours to reach full power.
Summary of Installation:
Unpack and attach the Cactus to a wall
Connect top & bottom manifolds to plumbing
Install optional by-pass plumbing
Install Anti-Fouling System
Connect system power cord to an optional Transient Voltage Surge Suppressor
(TVSS)
Connect TVSS to grounded power outlet

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POWER CORD ENTRY & LOCATION OF SERIAL NUMBER
TRANSIENT
VOLTAGE
SUPPRESSOR
(SUPPLIED
BY OTHERS)
ON/RESET
POWER
OFF
GROUNDED
OUTLET
120VAC 50/60Hz
CACTUS
MOUNTED VERTICAL
AGAINST A WALL
OPTIONAL
DRAIN
VALVE
MANUAL
SHUTOFF VALVE
OPTIONAL BY-PASS
VALVES
PIPE INSULATION
(MUST BE INSTALLED)
COPPER TUBING OR EQUIVALENT
(DO NOT USE PVC)
Figure 1B
Assembling the Cactus
Step 1: Unpack the system, being careful to remove all packaging material.
Inspect the system for damage, particularly the quartz sleeve (See Figure 4A on
page 20.)
Step 2: The Cactus has two keyhole slots (top) and two round holes (bottom) for
convenient mounting – all four should be used. To mount the system, use the
template, included, to position the two top holes. The unit should be secured
vertically to a solid wall or plywood, large enough to cover the complete

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backside of the unit – See Figure 1C. Do not install the system horizontally.
Remove the top and bottom covers of the unit to make the mounting holes
accessible.
Connecting the Pipes
We recommend that a qualified dealer or licensed plumber perform the water
connections for your UV system. Water must flow into the inlet at the bottom
of the Cactus. The outlet is located at the top of the unit. The stainless steel
manifolds (both top and bottom) must be held with a wrench when
tightening mating connector. The use of a flexible stainless hose is
recommended (Part No. R400007).
Step 1: Shut off the water supply. Caution: Always turn off the water supply
before modifying or disconnecting any piping. Always open a faucet after shutting
off the water supply to relieve water pressure and ensure that the water has been
completely shut off.
Step 2: If you have decided to install an optional by-pass line and drain, you may
begin to install these fittings at this point. See Figure 1B for more information on
how to connect optional by-pass piping and drain.
Caution: Do not allow solder or solder flux to fall in or on the Cactus.
Step 3: Connect the outflow piping to the manifold located at the top of the unit.
Do not use PVC pipe or braided hose at the outlet – during extended periods
of no flow, water temperatures may exceed the softening point of PVC.
Step 4: Caution: Do not allow the inside of the unit to get wet. Before turning
on the water supply, double check all connections and cover the top of the
system with a rag or some plastic to prevent water entry. Ensure that the front
panel is closed. Close any faucets you opened in Step 1 and then slowly turn on
the water supply to check for leaks. If leaks exist, investigate the cause and
repair. Caution: Do not connect the unit to electrical power until the piping and
unit are free of water leaks.
Step 5: Install the Anti-Fouling System. The Anti-Fouling System consists of a
pressure regulator, drip valve and connectors and is designed to allow a small
amount of water to flow through the UV unit during periods of no water usage. It
should be located such that water would flow from the water reservoir (or
pressure tank) through the UV unit and then through the Anti-Fouling System.
Detailed instructions for the system are provided within the kit.
Step 6: Once the system is checked for leaks, install pipe insulation on all
overhead outlet piping to prevent condensation from falling onto or into the unit.
Parallel Installation
When more than one system is installed in parallel to increase treatment capacity
(the flow is divided among systems), the systems must be installed with manual
shutoff valves before and after each system. This allows one Cactus to be
serviced without interrupting the flow to the other(s). See Figure 1D.

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MOUNTING
INCORRECT
WOOD TO FALL
AT LEAST TO
BOTTOM OF UNIT
CORRECT
MOUNTING
OR
WOOD TO RISE
AT LEAST TO
TOP OF UNIT
MOUNT UNIT
AGAINST SHIM OR
PLYWOOD
Figure 1C
MANUAL SHUTOFF
VALVE - ESSENTIAL
OPTIONAL
DRAIN
20" FILTER
HOUSING
TYPICAL INSTALLATION OF PARALLEL UNITS
MANUAL SHUTOFF
VALVE - ESSENTIAL
Figure 1D

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Locating the Receptacle and Optional TVSS
Install the receptacle and optional TVSS in a sufficiently high location so that if
the power cord is removed from the unit and drops, the end of it will not fall to the
floor potentially in any water spills – See Figure 1E. If this is not possible, the
power cord should be secured to the wall to prevent it from falling.
Figure 1E
Plugging in the Cactus
Step 1: Ensure that the front panel of the unit is closed and the unit is securely
fastened to the wall. (Note: You should not open the front panel unless the unit
has been unplugged to prevent risk of electrical shock and exposure to UV light.)
Caution: It is not recommended to operate the Cactus dry. Water should be
in the treatment chamber when the unit is in operation.
Step 2: Plug the female end of the power cord into the power entry module
located on the right side of the front panel. Plug the male end of the power cord
into the optional Transient Voltage Surge Suppressor. Plug the optional Transient
Voltage Suppressor into a grounded electrical outlet.
Caution: Use only a grounded electrical outlet when connecting the Cactus to a
power source. If you do not know whether the outlet is grounded, check with a
qualified electrician. If an extension cord is necessary, the cord should contain a
ground and have an electrical rating no less than the rating of the unit or
combined units. The piping connected to the UV unit must also be properly
grounded.
The installation is now complete.
INCORRECTCORRECT
ON/RESET POWER OFF
INSTALL RECEPTACLE & TVSS HIGH TO KEEP
END OF POWER CORD FROM FALLING
INTO ANY WATER ON THE FLOOR
GROUNDED
OUTLET
120VAC 50/60Hz
ON/RES ET
POWER
OFF
INSTALL RECEPTACLE & OPTIONAL TVSS HIGH
TO KEEP END OF POWER CORD FROM FALLING
INTO ANY WATER ON THE FLOOR

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Important: After the unit has been operating for a few hours, unplug the unit and
check all connections for leaks. Repeat this procedure periodically.
Proceed to “System Operation” for further instructions and to ensure
optimal performance.
Flushing Instructions
Flushing the system is required after installation or after any disassembly and
cleaning. Flushing may also be required to remove colored water from the unit.
Most filters (if installed) also require flushing prior to use – follow the
manufacturer’s recommendations if filters are installed before the system(s).
The system may be flushed in two ways. It can be done manually by
disassembling the unit and filling and draining the unit by hand (see Cleaning the
Unit). Flushing may also be done while the unit is operating. Plug in the unit,
open a faucet closest to the unit, and run the water for a minimum of 15 minutes.
3. Operating Instructions
The Cactus incorporates advanced Crossfire Technology, yet is simple to
operate. Inspection of the quartz chamber is a simple visual inspection. The only
required maintenance is the replacement of the two UV lamps every 12 months.
(Note - If you shut your system down for seasonal use, the lamp life will be
extended. Keep a record of usage to ensure UV lamps do not exceed their
lifetime.) Periodic inspections of the quartz sleeve are recommended to ensure
optimal unit performance (see Determining Need for Cleaning Section).
Unit Functions
Figure 2
There is a viewport on the front panel that projects visible light when the UV
lamps are ON. If visible light can not be seen, the UV lamps are not energized
and the system will not provide effective treatment.
Lamp On
Indicator

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Starting the Unit
Caution: Do not operate unit with the front carriage door or ballast
enclosure door open. Do not try to open the front carriage door or ballast
enclosure door when the unit is operating – Shut down and unplug the unit
before opening either the front carriage door or ballast enclosure. The Cactus
has a safety switch that will disable the lamp power supply if the front carriage
door is not completely closed.
Caution: It is not recommended to operate the Cactus dry. Water should be
in the treatment chamber when the unit is in operation. In the event of a lack of
water or if the water supply is turned off, shut down the system until the water
supply is restored. In the event of a power failure, the unit will shut down
automatically. When the power returns, the unit will automatically restart. Note
that during a brownout, the supply voltage may drop low enough to cause the
unit to shut down. If the unit does not automatically restart as described above,
unplug the system, wait 10 seconds and plug it in again. This will “re-boot” the
system and it will re-start automatically.
Step 1: Make sure the system is plugged into a Power Conditioner, and plug the
Power Conditioner into a grounded outlet to start the system. Caution: Never
look into and never expose skin to the UV lamps when the unit is operating. Wait
at least 10 seconds between system restarts.
Step 2: When the Cactus is plugged in, the viewport will be illuminated,
indicating that the lamps are energized and functioning.
During normal operation, if a power outage occurs, the system will re-start
automatically within a few seconds after power is restored.
If the UV lamps fail to energize during start-up procedures, re-boot the system by
unplugging the unit, waiting 10 seconds then plugging it back in. This will cause
the system to re-start.
Transient Voltage Surge Suppressor
Installation of an optional Transient Voltage (or Surge) Suppressor (TVSS)/Surge
Protective Device (SPD), certified to the UL 1449 standard by an NRTL/C that
includes integral Over/Under Voltage shutoff protection, is recommended.
UV Pure Technologies water purification systems are designed to operate within
normal power grid specifications (voltages and frequencies), worldwide. However,
power spikes, surges and brownouts are a common occurrence in all countries.
When that happens, line voltages may fluctuate outside the systems’ operating
specifications.
Installation of the optional TVSS/SPD (Power Conditioner) between the UV
system and the power source will increase the likelihood of the system surviving
transient events on the AC power grid. This will help to ensure uninterrupted
water treatment and reduce the risk of repairs due to damage from power spikes,
surges and brownouts that are not covered by the Manufacturer’s Limited
Warranty.

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Shutting Down the Cactus and Seasonal Use
Simply unplug the Cactus to shut the system down.
The Cactus may be left on for extended periods of time without use of water as
long as the system has water in it and has not been drained. Extended
periods of no water usage however, may increase chances of quartz fouling.
Periodic inspections of the quartz sleeve is recommended to ensure optimal unit
performance. The system may also be shut down in the case of seasonal
residences or during a vacation. If the possibility of freezing exists, the unit and
any filters must be drained. (See Draining the Unit.) When the system is first
restarted, in spring for example, reconnect all fittings, close all valves and turn on
the water supply. Plug in the UV system and run water through the unit for at
least 15 minutes.
Caution: If the optional by-pass piping is used, untreated water may enter the
plumbing system during by-pass. Emergency use of untreated water is the only
time that by-pass piping should be used. In that case, any water used for drinking
should be boiled. Unplug the system if the by-pass is used.
Disinfecting the Plumbing
Disinfection of the household or building plumbing should be performed after the
UV system has been installed and is operating. This procedure should also be
done if the system is not functioning normally, if a by-pass has been used, or if
there has been a high background bacteria count in a water sample. Disinfecting
the plumbing will ensure that any potential bacteria or contaminants in the
distribution system are treated prior to system use.
Please note that this procedure is ineffective against protozoa that can be found
in surface water or shallow wells under the influence of surface water. Under
these circumstances, it is important to perform the disinfecting procedure and
then operate the UV unit. This procedure does not work with sediments or heavy
biofilm and encrustations, which must be removed mechanically.
Sanitizing the household or facility plumbing is accomplished by adding 50 ppm
chlorine from bleach for 12 hours and then flushing. This can be achieved by
doing the following:
Step 1: Turn off the Cactus by unplugging it.
Step 2: Shut off the water supply, and relieve the water pressure by opening a
faucet.
Step 3: Remove a filter (if installed) from its housing and fill the housing with
bleach.
Step 4: Re-mount the housing (but not the filter) and plug in the UV system to
turn it on.
Step 5: When the Cactus is operating, turn on the water supply and run water to
all faucets (hot and cold), toilets, the washing machine and other water-using
appliances – the bleach must fill every inch of plumbing.

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Step 6: When you detect the odor of chlorine at each spot, stop running the
water and let the bleach remain in the lines for at least 12 hours. Turn off the UV
system during this procedure.
Step 7: After the waiting period is over, turn on the UV unit, wait 15 minutes, then
flush every line for at least five minutes or until the odor of chlorine is gone. See
local regulations for proper disposal of chlorine residual, especially in the case of
discharge into a septic system.
Step 8: Now that the disinfection procedure is complete, you will need to return
the filter (if installed) to its housing. Shut off the water supply, relieve water
pressure by opening a faucet, and return the filter to the housing. Allow a few
days after a disinfection procedure before getting a sample since residual
chlorine may affect the results.
Have the water tested by a local recognized testing agency prior to any water
consumption. For your local water testing labs, contact your dealer. The testing
should be performed on a regular basis as required by local regulations.
Caution: Do not allow chlorine to remain in the Cactus for more than 12
hours. Do not operate the system during this time because heating the
water in the system will increase the corrosive nature of chlorine.
4. Troubleshooting
The Cactus will operate automatically and unattended.
Disinfection of water will occur as long as the unit is properly maintained in
accordance with the instructions set out in this manual. Operating a
malfunctioning unit may jeopardize the operation of the Cactus and the safety of
the water. If any system failure occurs and water enters the plumbing system
without being disinfected, or if an optional by-pass is used, any water used for
drinking should be boiled. Under these circumstances, the water supply should
be disinfected after returning the unit to normal operation. (See Section on
Disinfecting the Plumbing.)
If water should drip or leak onto the UV system, unplug the system and repair the
leak (or add pipe insulation to prevent condensation runoff). Dry all remaining
water, and inspect the lamps and reflectors for water spots and clean them if
necessary– (see section on Replacing and Cleaning UV Lamps). The reflectors
are the shiny curved panels in front of and behind the lamps. The reflectors may
be wiped with a clean, soft cloth. If the reflectors do not come clean or are
damaged, they must be replaced.

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“Lamp On” Indication
There is a viewport on the front panel that projects visible light when UV lamps
are ON. If visible light can not be seen, the UV lamps are not energized and the
system will not provide effective treatment. If the UV lamps have been operating
for 12 months, replace the UV lamps with new lamps. If the lamps have not been
operating for 12 months, inspect the lamps. If the lamps are not discolored, re-
start the system by plugging it back in and observe the viewport. If the UV lamps
either fail to start or start but go out after several minutes, the lamps should be
replaced. If the lamps are significantly discolored, replace both lamps and ballast.
If one or both lamps exhibit significant discoloration at their ends, this
implies the lamps and ballast have expired. Both lamps and ballast must be
replaced. Operating new lamps with an expired ballast will cause damage
to the new lamps.
If no visible light can be seen in the viewport, it is possible that there is no power
to the unit; the door safety switch is not engaged; or the ballast may require
replacement. Check for power. Check door safety switch. If no fault is found with
these items, replace ballast. Use chart below for quick reference guide.
Unit Status Possible Cause Corrective Action
Viewport
illuminated
Unit treating No Action Required
Brief flash or
momentary
Illumination
Ballast is attempting to
start lamps but lamps
will not stay lit.
Replace lamps.
Viewport not
illuminated
UV lamps have
exceeded 12 months
UV lamps have not
exceeded 12 months
No power to unit
Door safety switch not
engaged
Ballast expired
Water leaking onto unit
Replace lamps. Note: If lamps discolored,
ballast must be replaced as well.
Inspect lamps for discoloration. If lamps
discolored, replace both lamps & ballast.
If lamps not discolored, unplug unit & plug
it in again after 10 seconds.
Reduce the number of starts & stops on
the unit – replace lamps.
Voltage drops may cause ballast to cut
out. Unplug unit and plug in again.
Check receptacle or GFI.
Close front carriage door.
Replace ballast. Confirm TVSS is installed
and operating. Inspect lamps - if lamps
discolored, they must be replaced as well.
Inspect unit and replace damaged
components.

Cactus Owners Manual
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5. Maintenance
Replacing and Cleaning UV Lamps
The system contains two ultraviolet (UV) lamps that emit high-intensity UV light in
the germicidal frequency range, providing effective disinfection of the water
flowing through the unit. The lamps will lose UV intensity over time and should be
replaced every 12 months. It is recommended to run the UV lamps continuously
since frequent starts and stops will accelerate the lamp expiration. (Note:
Shutting down the system for seasonal use will extend lamp life.)
The lamps can be easily replaced in minutes. Draining the system or removing it
from the wall is not required. See Figure 3.
Caution: The lamps in the unit emit ultraviolet (UV) light that can cause
permanent damage to the skin and eyes. Never look at a lamp when it is
operating. Always unplug the unit before replacing lamps.
Caution: Never touch the bulb (transparent quartz portion) of a lamp with your
fingers. Handle the lamp by its ceramic ends only. If the surface of the lamp
becomes dusty or dirty, use a clean, lint-free cloth and some rubbing alcohol to
remove the dirt. For more difficult stains such as water spots, use a scale
remover to remove the stain and then rubbing alcohol afterward. The lamps are
fragile and must be handled with care.
Tool Needed
•Slotted screwdriver
Step 1: Remove the top and bottom cover by pulling each side of the plastic
cover outward from the system. When the top cover is removed, you will see two
wing nuts that secure the front carriage door. Loosen the wing nuts so that the
front carriage can be tilted forward to reveal the lamps. Lower the front carriage
until it comes to a stop at 45 degrees.
Step 2. CAUTION: The lamps are very hot after continuous use and can burn
your skin on contact. Allow lamps to cool for five minutes before removing them.
Slowly lift the old lamps out of the system. Do not twist the lamps as they are
being removed. To help remove the lamps, insert a flat bladed screwdriver
between the lamp base and its socket and lightly pry the lamps upward (see
Figure 3). Dispose of the old lamps in the same way you would dispose of
ordinary fluorescent lamps. Note that old lamps should be disposed of at a
household waste management depot or transfer station; contact your local
recycling and waste management authority for proper disposal procedures.
Step 3: Install the new lamps into the Cactus, being careful not to touch the bulb.
Ensure that the lamps are aligned with the tab facing the outside of the
system (left or right side of the system), or, if the lamps have a “stop sign”
printed on the top ceramic, ensure that the “stop sign” is facing toward the
middle/center of the system. (If you cannot see the stop sign, the position
of the lamp is correct; if you CAN see the stop sign, the lamp is backward.
Spin the lamp 180 degrees so that you cannot see the stop
sign. (See Figure 3)

Cactus Owners Manual
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FRONT PANEL
ASSEMBLY
UV LAMP
WING NUTS
TOP COVER
LAMP SOCKETS
NOTE: DO NOT TWIST/TURN THE LAMPS
WHILE PINS ARE ENGAGED
USE A SCREW DRIVER
TO PRY LAMP UP HERE
CORRECT TAB ORIENTATION
(TABS BELOW SUPPORTS
FACING OUTWARDS)
INCORRECT TAB ORIENTATION
(TABS FACING INWARDS)
BOTTOM COVER
UNPLUG UNIT BEFORE REPLACING LAMPS
FACES INFACES OUT
UV
www.uvpure.com
Figure 3
Once the pins of the lamp begin to engage into the lamp socket, push firmly
down on the top of the lamp. Do not twist the lamps when they are inserted.
The lamp will come to rest when the pins are fully seated into the socket. When
pressing down, be sure to position the lamp ceramic end in the center of the hole

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in the lamp holders. Repeat this for the other side.
Step 4: Return the front panel to the upright position and secure it by tightening
the wing nuts. Replace the plastic covers.
Step 5: Plug in the Cactus. The Lamp On viewport will be illuminated indicating
that the lamps are energized and functioning. Note the date of lamp replacement.
Draining the Unit
The UV system does not require draining for routine operation or lamp
replacement. Draining is necessary to disassemble the system, to protect against
freezing or to remove poor-quality water.
Step 1: Shut off the water supply.
Step 2: Unplug the system from the electrical outlet.
Step 3: Place a bucket under the unit to collect the water.
Step 4: Open a faucet downstream of the unit.
Step 5: If you have installed an optional drain valve, open the drain valve. If you
do not have an optional drain valve, disconnect the water pipe below the unit and
allow the system to drain for a few minutes.
Step 6: When draining is complete, close the drain valve or reconnect the pipe.
Step 7: Close any faucets that were previously opened.
Cleaning the Unit
If the quartz water column becomes fouled due to water chemistry that is outside
normal specified ranges, follow the steps below to inspect the quartz and for
quartz cleaning.
Caution: Always unplug the system before performing any maintenance. Never
operate a system unless the front panel is completely secured.
Tools Needed
•Slotted screwdriver
•Adjustable wrench or a 7/16” open end wrench or deep socket wrench
driver

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Inspection Procedure for Quartz Sleeve
REMOVE
BOTTOM
COVER
PULL OUTWARDS
AND LIFT
LOOSEN
WING NUTS
REMOVE
TOP COVER
QUARTZ
Figure 4A
(Recommend inspecting quart sleeve every three months.)
Step 1: Unplug the unit.
Step 2: Remove the plastic covers by pulling each side of the cover outward
from the unit, and loosen the wing nuts holding the front carriage.
Step 3: Tilt the front carriage open until it comes to rest at a 45°position.