Solinst 464 Mk3, User Manual

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Model 464 Electronic Pump Control Unit User Guide
Page 11
Double Valve Pumps – Drive Time
• Place the sample line into an empty collection container
• Push the Manual Control Button on the Electronic Control Unit
• Count the seconds until the water stops discharging from the sample
line
• Your Drive Time is %40 of this count
(i.e. the full count is the amount of time is takes to evacuate the entire
pump system of water, using drive gas. %40 of that count means the
drive gas will not enter the pump.)
Double Valve Pumps – Vent Time
• Start with 2 to 4 times the Drive Time
• Vent Time increases with deeper submergence and slower well
recharge
NOTE
You can start with the sample line
submerged. A steady stream of
bubbles and then water discharge
indicates sufficient pressure is being
used.