QED AutoPump Ultra 4.0, Руководство по эксплуатации

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10
Chapter 5: Installation
11. Increase the air pressure to the pump until the pump is pushing the fluid out at the desired rate. With sufficient air
pressure (at least 10 to 15 psi higher than the vertical static head), the pump will gradually draw down the fluid level in
the well to the level of the pump. The time required for this draw down varies with the yield of the well as compared to
the flow rate of the pump. The maximum recommended pump operating pressure is 120 psi.
Note:
If the well environment is such that deposition occurs on stainless steel parts, the operator may wish to raise the
pump above the water level during a shutdown of the system.
* Routing the air exhaust in vacuum wells:
QED controllerless pumps automatically control the liquid level in the well. Under normal conditions, the liquid level will be
maintained at a point approximately one foot below the top of a bottom load pump (this is the pump's actuation point). The
pump will automatically start and stop as needed to maintain the level at this actuation point.
When QED controllerless pumps are used in wells that are under vacuum, and the exhaust air is routed into the well, the
well level will be maintained at this normal actuation point. If, however, the well is under vacuum and the exhaust air is
routed outside of the well (to atmospheric pressure), the actuation point of the pump will be higher than the normal
actuation point by a distance equal to the amount of vacuum applied to the well (expressed in "inches of water column”).
Please note that the pump will still function normally and maintain the liquid level, albeit a higher level.