Labconco WaterPr PS Systems 90007 Series - Manuel (Page 21)

Chapter 3: Getting Started
17
Original Instructions
Operating Precautions
• After installing new cartridges, the resistivity will slowly increase due to the removal of
contaminants in the system and on the cartridges. Rinse up time may be as long as 24 hours
before the resistivity equals or exceeds Type 1 specifications (16-18 megohm-cm
resistivity). When the unit has set for period of time allow five minutes of operation to
assure equivalent water purity throughout the system. Ultrafiltered models may require
longer time.
• Ensure that the WaterPro PS is connected to a prepurified source of water, such as distilled,
reverse osmosis or deionized with a conductivity of 100µS or less. Water of lesser quality
will exhaust the carbon, deionization and organic adsorption cartridges faster and will
prematurely destroy the ultrafilter membrane. All feed and drain lines should be connected
and routed in accordance to local and national plumbing codes.
• The ultraviolet lamp, used in models so equipped, emits small amounts of ultraviolet
radiation during operation. ALWAYS unplug the system before removing the unit cover or
servicing the lamp.
• Ensure that the unit is connected to electrical service according to local and national
electrical codes. Failure to do so may create a fire or electrical hazard.
• Do not remove or service any electrical components without first disconnecting the PS
system from the outlet.
• System performance and cartridge life span are directly related to the feedwater quality. It
is important to establish feedwater quality before operating the unit.
• Organic adsorption and deionization cartridges have a finite capacity for purifying water
before being exhausted. As the cartridges approach exhaustion, the system will require
longer recirculation times to achieve 16 – 18.2 megohm-cm resistivity and the water
quality may fluctuate during dispensing. Upon exhaustion, the resistivity will decrease
rapidly without recovery. Replacement of the deionization and/or organic adsorption
cartridges will restore water purity.
• On Ultrafiltered models with new membranes or membranes that have not been used for a
period of time, allow water to dispense to drain for a period of two hours and recirculate
overnight before use. Failure to do so may cause contamination in the system and/or false
meghom readings. A preservative has been added to the membrane to prevent bacterial
growth and freezing.
Thoroughly understand procedures and equipment before beginning work.