Use and Care Manual
3
FUNCTION:
The function of this ultraviolet disinfection unit is to provide in excess of 99% reduction of all water
borne pathogenic (disease causing) bacteria.
Model PT series have a number code designation correspondent to the maximum gpm
(gallons per minute) flow rate of the unit. I.E.- PT-8 has a maximum flow capacity of 8 gpm.
Applications:
Ultraviolet Germicidal Disinfection
PurTest Ultraviolet Disinfection Units are designed to destroy micro-organisms in water supplies. The
Ultraviolet lamp peak radiation of 254 nanometer wavelength (nm) destroys or inactivates the D.N.A.
(deoxyribonucleic acid) which absorbs the Ultraviolet radiation. PurTest Germicidal
Disinfection units meet minimum dosages of 30,000 microwatt second per square centimeter.
MAXIMUM CONCENTRATION LEVELS BEFORE ULTRAVIOLET:
Turbidity.................................5 NTU Hardness..........................................7 gpg
Color.......................................None Iron...................................................0.3 ppm
Manganese........................0.05 ppm pH....................................................6.5 - 9.5ppm
Important Note - Pre-filtration equipment may be required if these parameters cannot be maintained.
Flow rate must not exceed rated capacity of the unit.
DESCRIPTION OF EQUIPMENT:
The PT series has an unique design with an ultraviolet germicidal lamp housed within a
single quartz sleeve surrounded by a stainless steel pressure chamber. The chamber is fabricated out
of 304 Stainless Steel.
These units come with an ultraviolet lamp designed with four pins at one end.
The quartz sleeve is intended to be placed through the disinfection chamber and will slightly protrude
through the threaded nipple. The ultraviolet lamp is placed within this quartz sleeve. The U.V. light
shines through this specially designed hard quartz sleeve for maximum disinfection efficiency to meet
the requirements for bacteria reduction in potable water.
The inlet/outlet are located on one side of the chamber and may be interchanged as to designation
dependent upon installation. A box is secured to the wall and the chamber is held in place by tightening
the lock nut to both mounting box and chamber.