UltraViolet Devices MP22A User Manual

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3. The water purifier should be mounted horizontally on a flat dry surface. Secure the water purifier using the  mounting 

holes in the ballast housing or with the optional wall mounting kit. The purifier should not be solely supported by its 
plumbing connections.

4. The water purifier must be connected to the cold water line only.
5. It is recommended that a 5-micron sediment filter be installed, in line, prior to the water purifier. The sediment  filter will 

stop or trap any particulates from entering the water purifier. Particulates may cause damage to the quartz sleeve, as well 
as interfere with the purifier’s ability to disinfect the water. The sediment filter may also help to reduce the amount of 
routine cleaning of the quartz sleeve.

6. Shut off valves should be installed on both the inlet and outlet sides of the water purifier. The use of bypass  valves is  

not recommended. The shut off valves allow the purifier 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 purifier; this will allow easy removal of the  water 

purifier from the plumbing, if required. Apply Teflon® 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 purifier at a low flow rate, until the  purifier 

is pressurized. With the purifier pressurized, it should be checked for leaks. Once it is determined that there are no leaks, 
the inlet valve can be fully opened.

9. For Models with lamps packed separately, install lamp following the steps in “Lamp Installation or Replacement” section.

10. Once the plumbing hook ups are made, it is a good practice to disinfect the “downstream” plumbing between the purifier 

and point of use. This is done by introducing chlorine into the purifier chamber, a 100-ppm solution of  chlorine is 
suggested. With the chlorine in the purifier chamber, turn the ultraviolet purifier on. Open the  “downstream” outlet until a
chlorine odor is noticed. Close the outlet and allow the chlorine to remain in the plumbing for three (3) hours. Flush the 
plumbing with ultraviolet purified water; allow the water to run for several minutes before use. This will allow the 
chlorine to be flushed from the pipes.

1. Remove water purifier from shipping carton. Inspect water purifier, power cord and plug for damage. Do not  operate if 

there is any damage to the purifier, power cord or plug. Models MP13A through MP22A are shipped with the lamps 
already installed, while the MP36C and MP49C lamps are packed separately. Keep the lamp aside for installation once 
the purifier 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 purifier 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 purifier is pressurized.  See “Quartz Sleeve 
Cleaning or Replacement” in the “Maintenance” section for the proper method of replacing the quartz sleeve in your 
water purifier.