VWR Puranity TU 12 UV+, Instruction Manual

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VWR Puranity TU+ |
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How the Puranity TU+ system functions
When the system is in operation, tap water with a maximum pressure of 6 bar flows into the
system and is pumped by pressure booster pump 1 through the RO/pretreatment cartridge. The
RO/pretreatment cartridge splits the feedwater by reverse osmosis technology in “permeate and
“concentrate” water flow. The concentrate water flows to drain.The permeate of the reverse
osmosis membrane flows into the internal 5L tank or by Puranity TU 12+ systems into the
external pure water tank. If the internal or external pure water tank is filled with maximum
capacity with water of ASTM Type II, the feedwater solenoid valve is closed by a level switch and
prevents that no more water flows into the system.
After open the dispensing valve the pure water from the tank flows through the UV bulb (only
systems with UV), ultrapure cartridge and the ultrafilter (only systems with UF). ASTM Type I water
can be dispensed through the 0.2 μm final filter on dispensing valve and ASTM Type II water when
you have connect the accessory hand dispenser on the connection panel of the system.
The water in the internal or external tank is recirculated at regular intervals through the pressure
booster pump 2 to ensure the constant quality of pure water ASTM Type II. A level switch monitors
the water level inside the tank.
ASTM Type II water can be dispensed from the side outlets of internal tank from the connection
panel or from the front valve of the external tank.