Atlantic Ultraviolet Mighty Pure MP22A User manual

1
Document No. 98-1376F9 • July 2022 • ©2022 Atlantic Ultraviolet Corporation®
Models MP16A, MP22A, MP36C & MP49C
Owner’
s Manual
Owner’
s Manual
Installation,
Operation &
Maintenance
Read and Follow
All Safety Instructions.
Save these Instructions.
Manufacturers / Engineers / Sales / Service
Germicidal Ultraviolet – Equipment & Lamps
375 Marcus Boulevard, Hauppauge, NY 11788
[phone] • Fax: [phone]
Email: [e-mail]
Shop Products at
AtlanticUltraviolet.com
———————————————
Learn More at Ultraviolet.com

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TABLE OF CONTENTS
SAFETY WARNINGS .......................................................................................................................................................................3
SAFETY INSTRUCTIONS ..............................................................................................................................................................3
SAFETY LABELING........................................................................................................................................................................3
CAUTION...........................................................................................................................................................................................3
PRODUCT APPLICATION .............................................................................................................................................................4
ConstruCtion .................................................................................................................................................................................................... 4
PrinCiPle of oPeration .................................................................................................................................................................................... 4
limitation of use.............................................................................................................................................................................................. 4
Water Quality ................................................................................................................................................................................................. 4
INSTALLATION ...............................................................................................................................................................................5
loCation .........................................................................................................................................................................................5
Dimensional Data...........................................................................................................................................................................5
reCommenDeD installation ........................................................................................................................................................6–7
initial installation of Quartz sleeve moDel mP49C............................................................................................................ 7–8
reCommenDeD oPtions....................................................................................................................................................................9
MAINTENANCE.............................................................................................................................................................................10
insPeCtion .....................................................................................................................................................................................10
DisPosal of merCury aDDeD lamPs .............................................................................................................................................10
lamP installation or rePlaCement .............................................................................................................................................11
Quartz sleeve installation, Cleaning, or rePlaCement ...........................................................................................................12
rePlaCement of Broken Quartz sleeve......................................................................................................................................13
Cleaning of oPtional GUARDIAN™germiCiDal ultraviolet monitor sensor ProBe ............................................................14
TROUBLESHOOTING ..................................................................................................................................................................15
TECHNICAL SPECIFICATIONS.................................................................................................................................................16
OPTIONAL ACCESSORIES .........................................................................................................................................................17
REPLACEMENT PARTS........................................................................................................................................................ 18 –21
MIGHTY«PURE®moDels MP16A & MP22A................................................................................................................... 18–19
MIGHTY«PURE®moDels MP36C & MP49C................................................................................................................... 20 –21
MAINTENANCE NOTES ........................................................................................................................................................22–23
USER ASSISTANCE .......................................................................................................................................................................24
Patent notiCe...............................................................................................................................................................................24
WARRANTY & PRODUCT REGISTRATION ...........................................................................................................................24
These instructions generally describe the installation, operation and maintenance of the MIGHTY«PURE® line of water puriers,
Models MP16A, MP22A, MP36C and MP49C. Questions that are not specically answerable by these instructions should be
directed to the Factory.
Atlantic Ultraviolet Corporation®takes all possible precautions when packaging equipment to prevent damage. Carefully inspect
and report all damages. Do not install damaged equipment.
Follow all instructions on any labels or tags. Carefully inspect all packing materials before discarding to prevent the loss of
accessories, mounting hardware, spare parts or instructions.
The information and recommendations contained in this publication are based upon data
collected by the Atlantic Ultraviolet Corporation®and are believed to be correct. However, no
guarantee or warranty of any kind, expressed or implied, is made with respect to the information
contained herein. Specications and information are subject to change without notice.

3
SAFETY INSTRUCTIONS
SAFETY LABELS CAUTION
Danger Label: Hazardous Voltage
and Ultraviolet Radiation (70-0036)
It is the user’s responsibility to determine
and validate the suitability of this equipment
for use in the user’s system or process. No
warranty or representation is made by the
manufacturer with respect to suitability or
performance of this equipment or to the
results that may be expected from its use.
The user should periodically inspect, clean as
necessary and conrm the presence and good
legibility of the product safety labels. Contact
the factory for replacement labels in the event
that any of the labels are missing or illegible.
Location of Danger
Label (70-0036)
To guard against injury, basic safety precautions should be observed, including the following:
1. Read and follow ALL safety instructions.
2. Do not use this water purier for other than its intended purpose as described in this manual.
3. Do not alter design or construction.
4. Do not remove any labels or devices.
5. To prevent the risk of severe or fatal electrical shock, special precautions must be taken since water
is present near electrical equipment. Always disconnect power before performing any service or maintenance.
6. Avoid exposure to direct or reected germicidal ultraviolet rays. Germicidal ultraviolet rays are
harmful to the eyes and skin.
7. Intended for indoor use only. The water purier should be protected from the elements and from temperatures below freezing.
8. Do not operate water purier if lamp cable, lamp connection, power cord and/or plug are damaged, or if any other damage to
the water purier is visible or suspected
9. Electrical power supplied, to the water purier, MUST match power requirements listed on the water purier.
10. Plug the purier only into an APPROVED GROUND FAULT CIRCUIT INTERRUPT (GFCI) RECEPTACLE.
11. Do not operate without proper electrical ground.
12. Do not exceed water purier’s maximum rated ow capacity.
13. Do not exceed maximum operating pressure of 100 PSI.
14. Read and follow all notices and warnings on the water purier.
15. SAVE THESE INSTRUCTIONS.
Hg - Lamp Contains Mercury (70-0011)
SAFETY WARNINGS
• All personnel should be alerted to the potential hazards indicated by the product safety labeling on this unit.
• The following conventions are used to indicate and classify precautions in this manual and on product safety labeling. Failure to
observe precautions could result in injury to people or damage to property.
!
This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
Obey all safety messages that follow this symbol to avoid possible injury or death.
This symbol is used to identify the need
to wear protective gloves.
Caution indicates a POTENTIALLY
hazardous situation, which, if not avoided,
MAY result in minor or moderate injury.
Caution used without the safety alert
symbol indicates a potentially hazardous
situation, which, if not avoided, may result
in property damage.
This symbol is used to identify a GERMICIDAL
ULTRAVIOLET LIGHT hazard.
This symbol is used to identify an ELECTRICAL
SHOCK or ELECTROCUTION hazard.
Warning indicates a POTENTIALLY
hazardous situation, which, if not avoided,
COULD result in death or serious injury.
This symbol is used to identify the need to wear
approved germicidal ultraviolet blocking eyewear.
This symbol is used to identify the need to wear
approved germicidal ultraviolet blocking face shield.
This symbol is used to identify components which must
not be disposed of in trash
Danger indicates an IMMINENTLY
hazardous situation, which, if not avoided,
WILL result in death or serious injury.

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PRODUCT APPLICATION
ConstruCtion
• The water purier is designed to mount horizontally.
• A drain port on the chamber aids in draining of the purier.
• The water purier’s chamber and chamber head are passivated and electropolished type 316 Stainless Steel.
• The ballast housing is a combination of Stainless Steel Type 304 and Aluminum Alloy.
• EASY-OFF™End Caps enable quick and easy lamp change, without disconnecting from the water supply or draining the
purier. No tools are required. Always disconnect electrical power when changing lamp.
PrinCiPle of oPeration
The MIGHTY«PURE®design has been carefully conceived to provide adequate germicidal dosage throughout the disinfection
chamber. The dosage, as it applies to germicidal ultraviolet disinfection, is a function of time and the intensity of germicidal
ultraviolet radiation to which the water is exposed. The exposure time, in seconds, is the total time it takes the water to ow
through the disinfection chamber exposing it to the germicidal lamp. Exposure time is related to the ow rate; the higher the ow
rate, the lower the exposure time or the lower the ow rate, the higher the exposure time. The ultraviolet intensity is the amount
of energy, per unit time, emitted by the germicidal lamp. The dosage is the product of ultraviolet intensity and the exposure time.
The operation of the MIGHTY«PURE®is as follows:
• Water enters the purier and ows into the annular space between the quartz sleeve and the chamber wall.
• Suspended microorganisms are exposed to the germicidal ultraviolet rays emitted by the germicidal lamp.
• The translucent sight port, or optional germicidal ultraviolet monitor, provides visual indication of germicidal lamp operation.
• Water leaving the purier is instantly ready for use, no further contact time is required.
limitation of use
The water purier is intended for the use with visually clear water, not colored, cloudy or turbid. See “Water Quality” section
below. The water purier is NOT intended for the treatment of water that has an obvious contamination or intentional source,
such as raw sewage; nor is the unit intended to convert wastewater to microbiologically safe drinking water.
Water Quality
Water quality plays a major role in the transmission of germicidal ultraviolet rays. It is recommended that the water does not
exceed the following maximum concentration levels:
Table 1 – Maximum Concentration Levels
Turbidity < 1 NTU
Manganese 0.05 mg/1
Total Suspended Solids 10 mg /1
pH: 6.5 - 9.5
Color: None
Hardness 6 GPG or 102.6 PPM
Iron 0.3 mg/1
Tannins: < 0.1 ppm (0.1 mg/l)
UV Transmission >85% per cm*
* Contact Factory for recommendations on applications where UV transmission is < 85%
Effectively treating water with higher concentration levels than listed above can be accomplished, but may require added
measures to improve water quality to treatable levels. If, for any reason, it is believed the germicidal ultraviolet transmission is
not satisfactory, contact the factory.

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INSTALLATION
loCation
1. The water purier is intended for indoor use only. The water purier is designed to mount horizontally. The water purier
should be protected from the elements and from temperatures below freezing. The ambient temperature, in the area
surrounding the water purier, should be between 35°F and 100°F.
2. Electrical power supplied to the water purier MUST match power requirements listed on the water purier. Use of a voltage
surge protector is recommended.
3. Plug water purier only into an approved ground fault circuit interrupt (GFCI) receptacle.
4. The water purier should be located in a dry, well-lit area, which provides enough room to perform routine maintenance. This
includes a minimum distance of one chamber length from the chamber end, to allow for cleaning and/or the changing of the
lamp and quartz sleeve as well as a minimum of 6″ on the opposite end of the water purier. Minimum clearance to oor 18″.
5. The water purier should always be located closest to the point of use. This reduces the chance of the puried water being
re-contaminated by bacteria in the water distribution system after the water purier.
6. As with any water handling device, the water purier should be located in an area where any possible
condensation or leakage from the water purier, any purier accessory and/or plumbing will not result in damage to the area
surrounding the water purier. For added protection, it is recommended that a suitable drain pan be installed under
the purier. The drain pan must be plumbed to an adequate, free owing drain to prevent water damage in event of
a leak. There are numerous leak detection/ood stop devices, available on the market today, designed to stop ow
of water, reducing the chance of water damage due to leakage. For more details regarding leak prevention and/or
limiting damages due to leaks please contact factory.
7. The water purier should be located after all other water devices, such as De-ionizers, Water Softeners, Carbon Filters,
Pre-Filters, Reverse Osmosis, Pressure Tanks, and Pumps. This eliminates the possibility of the puried water being
re-contaminated by bacteria in any of these units.
Dimensional Data
Figure 1 – MIGHTY«PURE®Dimensional Drawing
Table 2 - MIGHTY«PURE®Dimensional Data
Model A B C D E F G H Inlet/Outlet
MP16A 8-3/4″ 16″ 8-3/4″ 10″ 16-1/2″ 3-5/8″ 4-5/16″ 8-3/16″ 3/4″ MNPT
MP22A 14-3/4″ 22″ 13-1/4″ 14-1/2″ 22-1/2″ 3-5/8″ 4-5/16″ 8-3/16″ 3/4″ MNPT
MP36C 28-1/2″ 36″ 16″ 18″ 36-1/2″ 4-15/16″ 5-11/16″ 9-1/2″ 1″ MNPT
MP49C 40-7/8″ 49″ 26″ 30″ 49-1/2″ 4-15/16″ 5-11/16″ 9-1/2″ 1- 1/2″ MNPT
All specications, dimensional data, etc are approximate and subject to change without notice.

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reCommenDeD installation
IN ORDER TO PERFORM THIS TASK, BE SURE TO WEAR THE FOLLOWING SAFETY
EQUIPMENT: SAFETY GLASSES OR A FACE SHIELD, AS WELL AS GLOVES.
1. Remove water purier from shipping carton. Inspect water purier, power cord and plug for damage. Do not operate if
there is any damage to the purier, power cord or plug. Models MP16A through MP22A are shipped with the lamp already
installed, while the lamp in the MP36C and MP49C is packed separately. Keep the lamp aside for installation once the
purier has been properly installed.
2. Units occasionally experience damage in shipment due to the fragility of the quartz sleeve. It is, therefore, recommended to
inspect the water purier for damage to the quartz sleeve after it has been removed from the shipping carton. Each end of the
unit as well as the inlet and outlet should be viewed to see if the quartz sleeve has experienced damage. If the quartz sleeve
shows signs of damage it should be replaced before the purier is pressurized. See “Quartz Sleeve Installation, Cleaning,
or Replacement” in the “Maintenance” section for the proper method of replacing the quartz sleeve in your water purier.
3. The water purier should be mounted horizontally on a at dry surface. Secure the water purier using the mounting
holes in the ballast housing or with the optional wall mounting kit. The purier should not be solely supported by its
plumbing connections.
4. The water purier must be connected to the cold water line only. Inlet water temperature should not exceed 100°F.
5. Installation requires that a 5-micron sediment lter or ner be installed, in line, prior to the water purier. The sediment lter
will stop or trap large particulates from entering the water purier. Particulates may cause deposits on the quartz sleeve, as
well as interfere with the purier’s ability to disinfect the water. The sediment lter may also help to reduce the amount of
routine cleanings of the quartz sleeve.
6. Shut off valves should be installed on both the inlet and outlet sides of the water purier. The use of bypass valves is not
recommended. The shut off valves allow the purier to be isolated from the water supply, which is required when removing
the quartz sleeve.
7. Unions should be installed on both the inlet and outlet of the water purier; this will allow easy removal of the water purier
from the plumbing, if required. Apply Teon®tape to threads of inlet and outlet ports to ensure a tight seal.
8. When all plumbing connections are complete, allow water to enter the water purier at a low ow rate, until the purier is
full. NOTE: Close the purier outlet valve to pressurize the chamber. With the purier pressurized, it should be checked
for leaks. Once it is determined that there are no leaks, the inlet valve can be fully opened. (Continued on Page 7)
Figure 2 – Recommended Installation

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9. For Models with lamps packed separately, install lamp following the steps in “Lamp Installation or Replacement” section.
Lamp and quartz sleeve are easily damaged. Exercise care when handling.
10. Plug water purier into approved ground fault circuit interrupt (GFCI) receptacle. Conrm lamp
operation indication at sight port.
11. Once the plumbing hook ups are made, it is a good practice to disinfect the “downstream” plumbing between the purier
and point of use. This is done by introducing chlorine or other disinfectant solution directly into the purier chamber;
100-ppm of chlorine is suggested. With the disinfectant solution in the purier chamber, turn the germicidal ultraviolet
purier on. Open the “downstream” outlet until a chlorine or disinfectant solution odor is noticed. Close the outlet and
allow the disinfectant to remain in the plumbing for at least three (3) hours. Flush the plumbing with ultraviolet puried
water; allow the water to run for a minimum of 5 minutes before use (to ensure no chlorine or disinfectant solution smell
can be detected), this will allow the chlorine or disinfectant solution to be ushed through the pipes.
For added protection, a suitable drain pan must be installed under the purier. The drain pan must be plumbed
to an adequate, free owing drain to prevent water damage in the event of a leak. There are numerous leak detection/ood stop
devices, available on the market today, designed to stop the ow of water, reducing the chance of water damage due to leakage. For
more details regarding leak prevention and/or limiting damages due to leaks, please contact the factory.
initial installation of Quartz sleeve moDel mP49C
(if shiPPeD Without Quartz sleeve installeD)
IN ORDER TO PERFORM THIS TASK, BE SURE TO WEAR THE FOLLOWING SAFETY
EQUIPMENT: SAFETY GLASSES OR A FACE SHIELD, AS WELL AS GLOVES.
Water Purier should NOT be installed or plumbed prior to following the instructions on this page.
NOTE: Some MIGHTY«PURE® Model MP49C models are packed without a quartz sleeve installed in the water purier
chamber and instead have a PVC pipe installed temporarily (for shipping purposes). Please follow these instructions if applicable.
1. Pull off EASY-OFF™ End Caps from static gland nut on each end of the water purier chamber.
2. Unscrew static gland nuts from each end of the chamber and remove Teon®washer and O-Ring from both ends of PVC
pipe. Set aside.
3. Remove PVC pipe and discard (REMINDER: be sure that the Teon®washer and O-Ring from both ends of PVC pipe are
removed before discarding the PVC pipe).
4. Broken Quartz is SHARP. It is recommended that protective glasses and gloves are worn when
handling. Remove quartz sleeve from separate package inside the carton which had contained the water purier.
5. Align the end of the quartz sleeve with the gland tting on the chamber (the quartz sleeve can be inserted into the chamber
from either end of the water purier chamber).
6. Carefully slide the quartz sleeve into the chamber guiding it through the gland tting. Make certain the quartz sleeve is
aligned in the center of the chamber. Do not force the sleeve sideways. This will result with the quartz sleeve breaking.
7. As the quartz sleeve nears the far end of the chamber, guide and support the quartz sleeve by inserting your nger through
the far end gland tting and into the end of the quartz sleeve. This will minimize the possibility of accidental breakage as the
quartz sleeve passes through the gland tting.
8. Center the quartz sleeve so equal lengths are protruding at each end past the gland ttings.
9. Reassemble the O-Rings, Teon®washers, and gland nuts (see Figure 3 on next page) in the order shown in Figure. TAKE
CARE NOT TO DAMAGE THE QUARTZ SLEEVE WHEN INSTALLING THE GLAND NUTS. STRIKING THE
SLEEVE WITH THE GLAND NUT WILL BREAK THE END OF THE QUARTZ SLEEVE.
10. Tighten the static gland nuts rmly by hand. DO NOT USE HAND TOOLS. Using hand tools is likely to cause quartz
sleeve to break.
11. Proceed to the “Lamp Installation or Replacement” section of this manual on Page 11 to properly install the germicidal
ultraviolet lamp in the water purier.

8
Figure 3 – Initial Installation of Quartz Sleeve

9
reCommenDeD oPtions
1. GUARDIAN™Germicidal Ultraviolet Monitor*: Visually indicates the level of germicidal ultraviolet energy that
penetrates the quartz sleeve and the water within the water purier. The ultraviolet monitor is capable of operating an optional
Promate™ Audio Alarm and/or solenoid valve. The ultraviolet monitor will detect reduction of ultraviolet levels due to:
• Fouling or deposits on the quartz sleeve.
• Poor germicidal ultraviolet transmission through the water; color, turbidity, and organic or other impurities in the water
can reduce or interfere with the transmission of ultraviolet rays.
• Lamp outage or component failure. (Monitor will not function in power outage.)
• Depreciation of the lamp output due to usage or other cause. Lamp output gradually depreciates with use. Lamp
replacement is recommended once each year.
2. GUARDIAN™ASSIST Germicidal Ultraviolet Monitor Extension (30-1014): Designed to remotely indicate the intensity
level displayed on the GUARDIAN™Germicidal Ultraviolet Monitor.
• The GUARDIANTM ASSIST converts a 4–20mA signal from the GUARDIAN
™Germicidal Ultraviolet Monitor to an
intensity level displayed on the monitor face. A 4 mA signal would read 0 and a 20mA signal would read 102.
• The GUARDIAN™ASSIST intensity reading will be the same as the GUARDIAN™Ultraviolet Monitor +/- 2%.
3. SENTRY™Safety Sensor: Indicators provide constant visual monitoring of normal operation. In the event of ballast or lamp
failure the safety sensor indicates an alarm condition. The safety sensor is capable of operating an optional Promate™ Audio
Alarm and/or solenoid valve.
4. STERALERT™Germicidal Ultraviolet Lamp Status Alarm (30-0090C or 30-0085B): Produces a high pitched, pulsed
tone when the water purier is no longer functioning when visible light fails.
5. SureFLO™Flow Control Valve: Limits water ow to the rated capacity of the purier. The ow control valve is located in
line prior to the water purier, and should be protected from germicidal ultraviolet exposure by the use of a 90-degree elbow
tting between the ow control valve and the water purier.
6. Promate™Audio Alarm (30-0173A or 35-2099): Activated by the Ultraviolet Monitor or Safety Sensor, alerts the user to
any malfunction detected.
7. Promate™Solenoid Valve: Operated in conjunction with the Germicidal Ultraviolet Monitor, Safety Sensor or Time Delay
Mechanism, this valve prevents water ow through the water purier when an abnormal condition is detected or in
the event of power failure.
8. Promate™Elapsed Time Indicator (30-1008A): A non-resettable display of the water purier operating hours. Useful for
scheduling and recording maintenance and lamp replacement.
9. Promate™Time Delay Mechanism (30-1369B or 30-0012B): Provides a 2-minute warm up period during which the
germicidal ultraviolet lamp achieves its full germicidal output before the water is allowed to ow through the water purier.
The time delay mechanism is used in conjunction with, and is electrically connected to the Solenoid Valve.
10. Promate™Wall Mount Kit (25-0188B): Stainless steel wall brackets provide quick and easy installation and professional
nish. Pre-drilled and ready to install. Optimizes free air circulation to cool ballast housing.
11. QUANTUM™Thermal Optimizer (27-1101, 27-1105, or 27-1106): Thermal relief valve used to help regulate the water
temperature inside the water purier’s disinfection chamber. Since the relative germicidal ultraviolet output, of a germicidal
lamp, is affected by temperature it is important to keep the lamp’s temperature within the peak output temperature range.
12. Promate™Safety Glasses (00-1299): Safety eyewear MUST be used as general-purpose safety protection and for
additional shielding from germicidal ultraviolet rays
13. Promate™Face Shield (00-0126): Lightweight visor with adjustable headgear provides eye and face protection from
ultraviolet rays.
* Use of this option is recommended by U.S. Public Health Service “Criteria for Acceptability of an Ultraviolet Disinfection
Unit.” Originally issued April, 1966.
NOTE: The recommended options above are available from Atlantic Ultraviolet Corporation®or a distributor of their
products. For the other devices that may be required for your application, please contact your local water treatment
dealer, plumber, or plumbing supplier. If you have any questions, please contact Atlantic Ultraviolet Corporation®
by phone or email: [phone] – [e-mail]

10
MAINTENANCE
The water purier is designed to operate with a minimal amount of maintenance, providing the water quality does not exceed
maximum concentration levels, see “Water Quality” in the “Product Application” section. Ordinary maintenance consists of:
• Lamp replacement is recommended every 10,000 hours of operation, approximately 12 months of continuous service.
• Cleaning of the quartz sleeve, when conditions warrant. It is recommended that the inspection of quartz sleeve be performed
after one month of use. If quartz sleeve is found to be coated (not clear), then frequency of cleaning must be done more often.
Deposits or discoloration on the surface of quartz sleeve are caused by excessive levels of the subject contaminant within
the water that is in contact with the quartz sleeve. Most deposits on the quartz sleeve are caused by an excess of calcium
(hardness), iron or manganese. Table 1 on Page 4 lists the maximum recommended concentration of these minerals in the
water that passes through the germicidal ultraviolet purier. If you encounter difculty due to deposits on the quartz sleeve,
your dealer will be able to recommend suitable pretreatment to reduce or eliminate the offending contaminant. If quartz
sleeve is clean (clear) then frequency of cleaning may be extended. NOTE: The use of optional GUARDIAN™Germicidal
Ultraviolet Monitor will detect loss of transmission due to coating on the quartz sleeve.
• Always disconnect the water supply and completely drain the water purier if it will be subjected to temperatures below freezing.
• Contact factory with questions.
insPeCtion
1. Regularly inspect the water purier to ensure that the germicidal lamp is still in operation.
• On puriers not equipped with the Germicidal Ultraviolet Monitor, lamp operation can be veried by a visible glow
through the translucent sight port. This provides an indication of lamp operation and does not indicate the level of
germicidal ultraviolet intensity or transmission through the water.
• On puriers so equipped, the GUARDIAN™Germicidal Ultraviolet Monitor provides visual indication of the ultraviolet
intensity through the quartz sleeve and water in the purier chamber.
2. To ensure proper operation of the water purier, regular biological testing of the purier output water should be performed
on a schedule recommended by local public health authorities, or at minimum; at installation, quarterly for the rst year of
service and annually, at lamp replacement, for the life of the water purier.
3. Additional testing should be performed whenever modications, change, or additions are made to plumbing system, pumps,
well source water etc. to ensure adequate disinfection under new condition.
4. As with any water purier installation, routine maintenance is necessary to ensure your equipment is operating correctly.
Regular inspection must also include conrmation that approved ground fault circuit interrupt (GFCI) receptacle is still
operational and that water purier is plugged into this GFCI. Any components which are damaged or broken should
be replaced.
DisPosal of merCury aDDeD lamPs
Germicidal ultraviolet lamps, like standard uorescent lamps contain small amounts of mercury. Mercury added
lamps should not be placed in the trash. Dispose of properly. For further information regarding the disposal and
recycling of lamps containing mercury, along with Federal and State requirements visit LampRecycle.org. For more
information on STER-L-RAY ®Germicidal Ultraviolet Lamps, visit AtlanticUltraviolet.com or Ultraviolet.com.

11
lamP installation or rePlaCement
IN ORDER TO PERFORM THIS TASK, BE SURE TO WEAR THE FOLLOWING SAFETY
EQUIPMENT: SAFETY GLASSES OR A FACE SHIELD, AS WELL AS GLOVES.
1. Disconnect power to water purier.
2. Remove both EASY-OFF™End Caps by pulling each cap off static gland nut. Slide each end cap along the wire away from
the socket.
3. Carefully withdraw lamp approximately 2 inches from chamber while feeding lamp socket and lead wire on opposite
end of chamber.
4. While holding lamp end, carefully remove lamp socket on end now exposed.
5. Next, carefully slide lamp back into chamber, until approximately 2 inches of the lamp is exposed on the opposite end. Hold
lamp and remove lamp socket.
6. Lamp should now be disconnected on both ends. Carefully remove lamp from chamber. Be sure to withdraw lamp straight
out without angling until completely clear of quartz sleeve.
Lamp and quartz sleeve are easily damaged. Exercise care when handling.
7. Reinstall lamp in reverse order.
Germicidal ultraviolet rays are harmful to eyes and skin. Do not restore power to water purier until
lamp and both EASY-OFF™End Caps have been properly reinstalled.
Step 2 – Remove End Cap
Step 6 – Remove LampStep 4 & 5 – Remove SocketsStep 3 – Withdraw Lamp
Figure 4 – Lamp Replacement

12
Quartz sleeve installation, Cleaning, or rePlaCement
Step 6 – Remove Quartz SleeveStep 5 – Remove Washer & O-RingStep 4 – Remove Gland Nuts
Figure 5 – Quartz Sleeve Installation, Cleaning, or Replacement
IN ORDER TO PERFORM THIS TASK, BE SURE TO WEAR THE FOLLOWING SAFETY
EQUIPMENT: SAFETY GLASSES OR A FACE SHIELD, AS WELL AS GLOVES.
1. Disconnect power to water purier.
2. Shut off water supply to water purier via inlet and outlet shut off valves. Drain chamber. Once the chamber is completely
drained, remove any old sealing tape from the threads of the drain plug, rewrap with 1/2″ wide Teon®thread sealing tape,
reinstall and tighten the drain plug.
3. Follow the steps in “Lamp Installation or Replacement” to remove lamp.
Lamp and quartz sleeve are easily damaged. Exercise care when handling.
4. Unscrew static gland nuts from each end of the chamber. Avoid striking quartz sleeve with static gland nut.
5. Remove Teon® washer and O-Ring from both ends of quartz sleeve. Teon®washer will sometimes remain within the static
gland nut. If so, remove Teon®washer from static gland nut before proceeding.
6. Carefully remove quartz sleeve from chamber. NOTE: It is advisable to support the quartz sleeve on the opposite end
with your nger so that it does not drop to the bottom of the chamber as it slides into the chamber.
7. Once the quartz sleeve is removed, clean with alcohol or a mild, non-abrasive detergent. Stubborn stains usually can be
removed with a dilute hydrochloric acid. NOTE: Follow all manufacturer’s instructions and precautions when
handling chemicals.
8. Reassemble in reverse order. Make sure the quartz sleeve protrudes an equal distance past each threaded nipple. Be sure
O-Rings are placed on quartz sleeve before Teon®washer.
9. Tighten static gland nuts rmly by hand only, DO NOT USE HAND TOOLS. Tightening with hand tools is likely to cause
quartz sleeve to break.
10. Slowly restore water supply to water purier and check for leaks.
11. If no leaks occur, reinstall lamp, following the steps in “Lamp Installation or Replacement” section.
Germicidal ultraviolet rays are harmful to eyes and skin. Do not restore power to water purier until
lamps and both EASY-OFF™End Caps have been properly reinstalled.

13
rePlaCement of Broken Quartz sleeve
IN ORDER TO PERFORM THIS TASK, BE SURE TO WEAR THE FOLLOWING SAFETY
EQUIPMENT: SAFETY GLASSES OR A FACE SHIELD, AS WELL AS GLOVES.
Broken Quartz is SHARP. It is recommended that protective glasses and gloves are worn when handling.
Disconnect power to water purier. Shut off water supply to water purier via inlet and outlet shut off
valves. Completely drain chamber.
Follow the steps in “Quartz Sleeve Installation, Cleaning, or Replacement” to remove lamp and quartz sleeve.
1. To prevent damage to the electrical components, it is necessary to separate the ballast housing from the purier chamber.
• On MIGHTY«PURE® Models MP16A, and MP22A, the ballast housing is mounted to the purier chamber using four
(4) No. 8 x 3/8″ long screws. Using a Phillips cross point screwdriver, carefully remove the four (4) screws, from along
the sides of the ballast housing, and set aside. Separate the housing from the chamber.
• On MIGHTY«PURE®Models MP36C, and MP49C , the ballast housing is mounted to the purier chamber using
four (4) 1/4″-20 x 3/8″ long hex head bolts. Using a 7/16″ wrench or an adjustable wrench, carefully remove the four
(4) bolts with the lock and at washers, from along the top of the ballast housing, and set aside. Separate the housing
from the chamber.
• Keep ballast housing and mounting hardware in a clean, dry area.
2. Unscrew static gland nuts from each end of the chamber. Remove Teon®washer and O-Ring from both ends of quartz
sleeve. Teon®washer will sometimes remain within the static gland nut. If so, remove Teon®washer from static gland nut
before proceeding.
3. Carefully remove as much of the broken quartz sleeve as possible, from each end of the chamber.
4. To remove fragments of quartz sleeve, hold the purier vertically and shake. The quartz fragments will break and drop out
of the purier through the gland tting. Flush water through chamber being careful to remove all quartz fragments from the
interior of the chamber.
5. Carefully discard all pieces of the broken quartz sleeve.
6. Align the end of the replacement quartz sleeve with the gland tting of the chamber.
7. Carefully slide the quartz sleeve into the chamber guiding it through the gland tting. NOTE: Use care to keep the quartz
sleeve parallel to the chamber. Angling the quartz sleeve in any direction could result in the breakage of the quartz sleeve.
8. As the quartz sleeve nears the far end of the chamber, support the quartz sleeve by inserting your nger through the far end
gland tting and into the quartz sleeve. This will minimize the possibility of breaking the quartz sleeve as it passes through
the gland tting.
9. Center the quartz sleeve in the chamber, making sure the quartz sleeve protrudes an equal distance past each threaded gland
tting, of the chamber.
10. Re-install O-Rings, Teon® washers, and static gland nuts. Be sure O-Rings are placed on quartz sleeve before Teon®
washer. Tighten static gland nuts rmly by hand only, DO NOT USE HAND TOOLS. Tightening with hand tools is likely to
cause quartz sleeve to break.
11. Re-assemble ballast housing to purier chamber, using hardware removed in Step 1. NOTE: When re-assembling ballast
housing to purier chamber, electrical power cord should exit ballast housing from the end mounted opposite the drain plug.
12. When all connections are complete, allow water to enter the water purier at a low ow rate until the purier is full. With the
purier pressurized, it should be checked for leaks.
13. See “Lamp Installation or Replacement” section to properly re-install the lamp into the water purier.

14
If after cleaning the quartz sleeve, there is no signicant improvement in the ultraviolet intensity, as shown on the intensity meter,
it may be necessary to clean the Ultraviolet Monitor’s sensor probe. The sensor probe body mounts in a tting, located in the
center of the disinfection chamber, and protrudes into the chamber.
1. Disconnect power to water purier.
2. Shut off water supply to the water purier via the inlet and outlet shut off valves. Remove drain plug and drain the chamber.
Once the chamber is drained, remove any old sealing tape from the threads of the drain plug, rewrap with 1/2″ wide Teon®
thread sealing tape, reinstall and tighten the drain plug.
3. Disconnect power to the Ultraviolet Monitor; remove from chamber by loosening the two set screws on the aluminum collar
and lifting it free from probe body.
4. Unscrew the sensor probe and remove from the chamber.
5. Remove the quartz rod sensor probe cap, from the probe body. Take care not to damage the quartz rod, O-Ring or the threads
of the probe body. NOTE: It is recommended, when servicing the sensor probe, to work in a clean, dry area.
6. Once the quartz rod is removed, clean with alcohol or a mild detergent, and rinse with clean water. Stubborn stains usually
can be removed with a dilute hydrochloric acid. NOTE: Follow all manufacturer’s instructions and precautions when
handling chemicals. Once the quartz rod has been cleaned, handle the rod by the sides, to avoid getting ngerprints on the
quartz rod faces.
7. Clean the probe body, by removing any dirt or deposits on all surfaces. O-Rings should be inspected and can be replaced if
worn or damaged.
8. Reassemble, replacing the O-Rings, quartz rod and securing in place with the quartz rod sensor probe cap. Tighten the quartz
rod sensor probe cap by hand only, DO NOT USE HAND TOOLS. Tightening with hand tools may damage the quartz rod
or O-Ring seal.
9. Reinstall sensor probe into the center tting of the chamber and hand tighten.
10. Slowly restore water supply to the water purier, pressurize, and check for leaks. Once it is determined that there are no
leaks, inlet valve can be fully opened.
11. Reposition Ultraviolet Monitor on probe body and tighten set screws.
12. Restore power to the water purier and ultraviolet monitor. If after the cleaning of the quartz rod, there is still no signicant
improvement in the ultraviolet intensity, as shown on the intensity meter, proceed to the “Troubleshooting” section.
Figure 6 – Ultraviolet Monitor and Sensor Probe
Cleaning of oPtional guarDiantm germiCiDal ultraviolet monitor sensor ProBe
Figure 7 – Sensor Probe

15
TROUBLESHOOTING
Always disconnect power to the water purier before performing any service or maintenance.
IMPORTANT: This unit is to be serviced ONLY by qualied, and appropriately licensed, personnel.
Table 3 – Troubleshooting
Problem Possible Cause Corrective Action
Purier not operating No electrical power Verify that the purier is connected to a live power
source.
Water leaking from purier
Cracked or broken quartz sleeve
Shut down purier, drain, and replace quartz sleeve.
See “Quartz Sleeve Installation, Cleaning, or
Replacement” in the “Maintenance” section.
Quartz sleeve sealing O-Ring (s)
worn, damaged
Shut down purier, drain, and remove static gland
nut, replace sealing O-Ring. See “Quartz Sleeve
Installation, Cleaning, or Replacement” in the
“Maintenance” section.
Poor, or loose, connections or ttings
Tighten suspect connection or tting; or shut
down purier, drain, and remove tting or
connection. Clean threads; reapply thread sealing
tape and reinstall.
Poor purier disinfection performance AND/OR Low
UV intensity (As indicated on optional GUARDIANTM
Germicidal Ultraviolet Monitor)
Quartz sleeve fouled
Clean quartz sleeve, see “Quartz Sleeve
Installation,Cleaning or Replacement” in the
“Maintenance” Section.
Sensor Probe, if equipped, lens or
quartz rod fouled
Clean lens or Quartz Rod, see “Optional
Germicidal Ultraviolet Monitor Sensor Probe
Cleaning” in the “Maintenance” section.
STER-L-RAY ®Germicidal Lamp
output depreciating
Replace lamp, as it nears its end of life (EOL).
See “Lamp Installation or Replacement” in the
“Maintenance” section.
STER-L-RAY ®Germicidal Lamp
not functioning
Replace lamp. See “Lamp Installation or
Replacement” in the “Maintenance” section.
Low input voltage Verify input voltage to purier.
Change in water quality
Have water tested to conrm that it does not exceed
maximum recommended concentration levels for use
with this purier.

16
TECHNICAL SPECIFICATIONS
Table 4 – Technical Specications
Model: MP16A MP22A MP36C MP49C
Flow Rate (GPM): 3 6 12 20
Inlet\Outlet Size: 3/4″ MNPT 3/4″ MNPT 1″ MNPT 1-1/2″ MNPT
Number of Lamps: 1111
Lamp Model No.: 05-1098-R 05-1097-R 05-1343-R 05-1334-R
Length: 16-1/2″ 22-1/2″ 36-1/2″ 49-1/2″
Width: 4-5/16″ 4-5/16″ 5-11/16″ 5-11/16″
Height: 8-3/8″ 8-3/8″ 9-1/2″ 9-1/2″
Chamber Diameter: 4-1/4″ 4-1/4″ 4-1/4″ 4-1/4″
Shipping Weight: 12 lbs. 14 lbs. 22 lbs. 36 lbs.
Voltage: j120v 120v 120v 120v
Amps: .23A .33A .42A .52A
Frequency: 60 Hz. 60 Hz. 60 Hz. 60 Hz.
Power Consumption: 18 W 24 W 44 W 65 W
Lamp Watts: 14 W 20 W 39 W 55 W
Max Operating Pressure: 100 PSI 100 PSI 100 PSI 100 PSI
Ambient Temperature: 35–100°F 35–100°F 35–100°F 35–100°F
Quartz Sleeve: 1111
Drain Plug: 1/4″ NPT 1/4″ NPT 1/4″ NPT 1/4″ NPT
Lamp Out Indicator: Translucent Sight Port Translucent Sight Port Translucent Sight Port Translucent Sight Port
Germicidal Ultraviolet Monitor: kOptional Optional Optional Optional
Flow Control Valve: kOptional Optional Optional Optional
Audio Alarm: kOptional Optional Optional Optional
Solenoid Valve: kOptional Optional Optional Optional
Time Delay Mechanism: kOptional Optional Optional Optional
Elapsed Time Indicator: Optional Optional Optional Optional
Thermal Optimizer: Optional Optional Optional Optional
j220v 50Hz, 220V 60Hz, 12v, or 24v DC units are also available. Consult Factory for specic voltage requirements.
kUse of this option is recommended by U.S. Public Health Service “Criteria for Acceptability of an Ultraviolet Disinfection Unit.”
Originally issued April, 1966.
Total power consumption, including ballast loss (based on 120v purier).
All specications, dimensional data, etc. are approximate and subject to change without notice.
12-Volt and 24-Volt Direct Current (DC) Ballasts and Units
Many individuals regard ballasts and units powered by 12v and 24v Direct Current (DC) to be relatively
benign from a safety standpoint. However, a DC ballast, in order to operate an ultraviolet discharge
lamp, must produce an output as high as 600v. This voltage is high enough to produce a very serious or
even lethal electric shock. IT IS IMPERATIVE that all DC ballasts and DC ultraviolet units be wired
and grounded appropriately.
Failure to ground all Direct Current (DC) ballasts, and/or the equipment it is employed in,
can result in serious injury or death.

17
OPTIONAL ACCESSORIES
Table 5 – Optional Accessories
Optional Accessories Available For:
GUARDIAN™Germicidal Ultraviolet Monitor – Analog/Digital MP16A through MP49C
GUARDIAN™ASSIST Germicidal Ultraviolet Monitor Extension MP16A through MP49C
SENTRY™Safety Sensor MP16A through MP49C
STERALERT™Germicidal Ultraviolet Lamp Status Alarm MP16A through MP49C
Promate™Audio Alarm MP16A through MP49C
Promate™Elapsed Time Indicator Universal Input MP16A through MP49C
Promate™Wall Mounting Kit MP16A through MP49C
Promate™Time Delay Mechanism MP16A through MP49C
QUANTUM™Thermal Optimizer: MP16A through MP49C
Promate™Solenoid Valve
MP16A (3/4″)
MP22A (3/4″)
MP36C (1″)
MP49C (1-1/2″)
SureFLO™Flow Control Valve j
MP16A (3/4″)
MP22A (3/4″)
MP36C (1″)
MP49C (1-1/2″)
Most optional accessories are
available for operation at 120v 60Hz
or 220v 50Hz. Please specify. Consult
Factory for 12v DC or other special
input power requirements.
jUnless otherwise specied, PVC
ow control valves are supplied.
All PVC and Stainless Steel ow
control valves are male NPT.
Consult Factory for other ow
control valves
Certied Models Available
Includes SureFLO™
Flow Control Valve
Model MP49C
Model MP36C

18
REPLACEMENT PARTS
MIGHTY«PURE®moDels mP16a & mP22a
Figure 8 – Exploded View MP16A & MP22A

19
Table 6 – Replacement Parts MP16A & MP22A
Item No. Description
MP16A MP22A
Quantity Part Number Quantity Part Number
1EASY-OFF™End Cap 2 25-1499A1 2 25-1499A1
2 O-Ring, Static Gland 2 00-1108B 2 00-1108B
3Steadfast™ Lamp Spacer 2 25-0208A 2 25-0208A
4Steadfast™ Lead Wire & Socket 2 05-2223A 2 05-2223A
5STER-L-RAY ®Lamp 1 05-1098-R 1 05-1097-R
6Promate™ Static Gland Nut 2 25-1492D 2 25-1492D
7Teon®Washer 2 25-1235A 2 25-1235A
8 O-Ring, Quartz Sleeve 2 00-1238A 2 00-1238A
9CRYSTAL CLEAR™ Quartz Sleeve 1 15-1111A 1 15-1112A
10 Sight Port Plug 1 30-1075 1 30-1075
11 Drain Plug 1 27-1216 1 27-1216
12 Speed Nut, 6-32 2 50-1314 2 50-1314
13A Surelite™ Ballast, 120v 60Hz 1 10-0137 1 10-0137
13B Surelite™ Ballast, 220v 50Hz 1 10-0136 1 10-0136
14 Screw, Mounting 2 50-0376 2 50-0376
15 Ballast Housing 1 25-1105C 1 25-1544E
16 Screw, No. 8 x 3/8″ long 4 50-1323 4 50-1323
17 Chamber 1 25-1465E2 1 25-1465E3
18A* Line Cord, (120v 60Hz) 1 35-1100 1 35-1100
18B* Power Cord 6’ (220v 50Hz) 1 35-1452 1 35-1452
19 Standoff, Mounting 2 50-0375 2 50-0375
* not depicted in Figure 8 on previous page
All specications, dimensional data, etc. are approximate and subject to change without notice.

20
MIGHTY«PURE®moDels mP36C & mP49C
Figure 9 – Exploded View MP36C &MP49C