Hydrotech PURA Max and Max Plus 15-LBGH2-PURA, 15-LBGH2-UV-PURA Operation Manual - Manual (Page 3)

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oPeRAtIoN MANUAL
Congratulations for choosing a PURA point-of-use water bottle-free cooler system. The PURA Max or
Max Plus dispenses both hot and cold water using either modern multi-filter or optional reverse osmosis
technology. PURA Max Plus models with a recirculating UV system limit bacterial growth and bio-film within
the cold tank system.
The
PURA Max Plus puts an end to bottled water deliveries by filtering your customer’s own water supply of
contaminants and bacteria, resulting in a virtually endless supply of crystal clear, filtered water.
The
PURA Max Plus has been designed to facilitate the use of either the 1240 Series Reverse Osmosis
System or the Pentek Filter Quick Change Cartridge System.
Note: In this operation manual, all references to
PURA Max or Max Plus are denoted by the words “Max or
Max Plus.”
Note: The
Max or Max Plus are not intended for use with water that is microbiologically unsafe or of
unknown quality without adequate disinfection either before or after the system.
Note: Check with your public works department for applicable local plumbing and sanitation codes. Follow
local codes if they differ from the standards used in this manual. To ensure proper and efficient operation of
the Max Plus to your full satisfaction, carefully follow the instructions in this manual.
Introduction of Recirculating UV system
The Max or Max Plus can be ordered with a factory-installed recirculating ultraviolet (UV) loop system. The
system is inexpensively designed to provide years of passive bio-film control of the cold tank system.
The recirculating UV system consists of a small 110V fountain pump, and a four watt germicidal ultraviolet
lamp that is contained within a specially-designed stainless steel housing.
The pump is mounted directly underneath the cold tank, and takes suction from the bottom of the cold tank.
The UV lamp assembly is mounted vertically next to the cold tank. The pump takes water from the base of
the cold tank and circulates it through the UV assembly, returning the water back into the top of the cold tank.
The UV lamp housing is designed with a very thin gap from the quartz sleeve to the highly-reflective SS wall
of the housing in which the water flows through. This design ensures maximum UV dose and penetration
through the water stream as it flows past the UV lamp.
The system is designed to cycle the full cold tank past the UV lamp as much as 60 times per hour, or once
per minute. The system has proven to be highly effective at controlling the bio-film growth in the cold tank,
thereby minimizing the need for routine cold-tank sanitization.