Well Wizard®
Installation and Operation Manual
Rev. E 06-05-2023
12
Starting the Installation
1. Measure water level and well depth to confirm data. These numbers should match the data you provided on
the QED Well Data Specification Sheets that were part of your order confirmation.
Well depth is critical when the pump or drop tube inlet is installed near the bottom of the well, as silt
accumulation may prevent proper installation. If the well depth confirmation measurement shows that
the bottom of the well is shallower than the original data due to measurement error, a database error, or
possibly due to silt accumulation, the tubing length should be adjusted to raise the pump, as desired, or
the silt should be removed prior to installation. (See Pump Testing section below for more details and
suggested solutions.) NOTE: This determination should be made
BEFORE BEGINNING PUMP
INSTALLATION
to avoid the need to pull the pump.
If the measured water level is lower than the data on the Specification Sheet, determine if the pump will
still be adequately submerged. It may be necessary to change the pump position by adding tubing to
achieve the desired submergence. In general, pumps should have at least 10 feet of submergence and
systems using drop tube inlets should have 25 feet of submergence over the pump.
Call QED if you
have any questions about submergence requirements and pump placement for your specific
application.
2. Check the well cap fit before lowering the pump and tubing into the well.
Determine that the cap you ordered is the correct size for the well casing diameter and there is adequate
vertical clearance below the protective outer casing lid or vault box cover.
If the cap does not slip easily onto or into the casing, there may be burrs or rough edges on the
edge of the casing. Use an appropriate tool to remove these before installing the system.
With the cap installed, there should be sufficient clearance between the top of the cap and the
bottom of the vault cover or outer locking casing lid. If there is insufficient clearance, an alternate
cap design may be required (e.g., low clearance cap), or the well casing can be cut down to
increase the clearance in some cases. Contact a QED application specialist to discuss cap options.
Be sure to account for the change in the water level measurement reference point elevation (top of
casing) due to the added thickness of the well cap. This should be recorded on a field form and
entered into the elevation database.
