Geotech Bladder Pumps, Installation And Operation Manual

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17
Chapter 5: System Troubleshooting
Problem : Air is cycling through controller but will not pump.
Solutions:

Discharge and Fill times are not set correctly. Check and adjust Discharge and
Fill cycle times (i.e. if Discharge time is too long or if Fill and Discharge time is
too short).

Possible compromise in air line tubing. Check air line pumps for leaks. If needed,
repair using compression union or replace tubing.

Check pump intake screen for blockage and clean as needed.
Problem : Controller is cycling but the pump stops producing water.
Solutions:

Check drawdown level of water in the well. Ensure the pump is fully submerged
and off of the bottom of the well.

Check psi at the regulator and adjust as necessary (see
“Determining PSI” in
Chapter 3).

Check for kinks in the discharge line.

Check pump intake screen for obstructions.

Discharge time is too long or Fill time is too short; causes pressure build up in
pump, causing the pump not to fill.

Check power source, assure a strong reliable power supply. If using old or weak
battery, the control valves may not operate properly.
Problem
: Getting air bubbles in sample line.
Solutions:

Overcharging pump. Reduce discharge cycle time so that discharge cycle ends
as fluid discharge trails off. Inspect pump for compromised bladder or o-rings.

Pump is being overpressurized. Reduce psi to what is necessary to overcome
pumping head.

Check discharge line for holes or kinks. Repair using compression union or
replace tubing.
Problem : Discharge line drains back into pump.
Solution:

Check valve is compromised. Remove Hosebarb on pump discharge outlet.
Check the check ball seat for debris. Clean and re-install.
If you are experiencing other problems than mentioned above, please call Geotech
Technical Support for immediate assistance, (800) 833-7958.