Labconco WaterPr PS Systems 90007 Series - Manuel (Page 25)

Chapter 4: Using Your WaterPro PS System
21
Original Instructions
Operating the Unit
Start Up
• Plug unit into electrical outlet.
• Turn feedwater valve ON.
• Turn unit ON.
• Press DISPENSE to dispense water from dispense valve in to vessel.
Automatic Intermittent Recirculation
All WaterPro PS Systems are designed to automatically start and recirculate water during periods
of nonuse to minimize rinse up time and bacterial growth. The automatic recirculation cycles last
for approximately 4 minutes every two hours. This automatic recirculation feature keeps rinse up
time to highest purity at a minimum. During periods of frequent use, leaving the unit constantly on
will provide Type I water instantly. When the unit has set for a period of time allow five minutes
of operation to assure equivalent water purity throughout the system. Ultrafiltered models may
take longer.
Ultrafilter Flush Valve Operation
The ultrafilter flush valve, found only on Ultrafiltered models, has been preset to open and flush to
drain for one minute on alternate recirculation cycles. (The valve opens for one minute every four
hours), to flush and clean the ultrafilter membrane. Reference Item 12 on Page 12 of this manual.
Total Organic Carbon (TOC) Dump Valve Operation
The TOC flush valve, found on HPLC models, has been preset to open and flush to drain for one
minute on alternate recirculation cycles (the valve opens for one minute every four hours), to
maintain the lowest possible TOC values. Reference Item 12 on page 12 of this manual.