Groundwater well pumps often get fouled and cleaning them depends on the type of fouling (biological, mineral, or mechanical). Here’s a step-by-step guide to clean and restore efficiency:
1. Identify the Type of Fouling
· Mineral Deposits (Scale): White, crusty buildup from calcium, iron, or manganese.
· Biological Growth (Bacteria, Algae, Biofilm): Slimy, discolored buildup.
· Sediment/Debris: Mud, sand, or silt accumulation.
· Oil/Grease Contamination: Usually from surface runoff or malfunctioning equipment.
2. Shut Down and Remove the Pump
· Turn off power to the pump.
· Disconnect piping and any electrical connections.
· Remove the pump carefully using a hoist or tripod (if deep).
Cleaning Process
For Mineral Deposits (Calcium Scale Buildup)
1. Use a descaling solution (commercial scale remover such as BoreSaver MultiKleen or EZ ECO, diluted with water).
2. Submerge affected parts in the solution for several hours.
3. Scrub with a stiff brush or use a pressure washer.
4. Rinse thoroughly with clean water.
For Biological Growth (Biofilm, Algae, Bacteria)
1. Mix a BoreSaver Ultra C solution (5% in water).
2. Submerge the pump and let it sit for a few hours or overnight.
3. Shouldn’t need to scrub with a brush
4. A high-pressure rinse can be useful.
5. Flush with clean water to remove residue.
For Sediment and Debris
1. Use compressed air or high-pressure water to remove lodged particles.
2. Disassemble parts if necessary to clean inside casings and impellers.
For Oil and Grease Contamination
1. Use a mild detergent and warm water to clean greasy buildup.
2. Avoid harsh chemicals that could damage rubber seals.
4. Inspect and Reassemble
1. Check for worn parts (bearings, seals, impellers) and replace if needed.
2. Reassemble the pump and ensure all seals and connections are secure.
5. Reinstall and Disinfect the Well
1. Carefully lower the pump back into the well.
2. Before restarting, shock chlorinate the well to disinfect any remaining contaminants.
3. Pump water out until chlorine smell disappears.
6. Test the System
1. Restore power and monitor pressure and flow.
2. Test water quality for bacteria, pH, and mineral content.
Regular maintenance and periodic cleaning can help prevent future fouling. If the pump repeatedly gets clogged, consider regular treatment with the appropriate treatment chemicals.
Comments