Submersible Pump Maintenance Checklist
Keep submersible pumps protecting against flooding — operation and float-switch checks, seal and impeller inspection, level control verification, and alarm testing.
What is a submersible pump maintenance checklist?
A submersible pump maintenance checklist is a structured list of the 10 preventive maintenance tasks — covering visual, functional, cleaning, safety and record-keeping checks — that keep a submersible pump running safely and reliably. It groups routine checks by frequency, from daily inspections to annual servicing, so FM teams and building engineers can plan and evidence preventive maintenance.
Core submersible pump checks
- Inspect cabling, lifting chains, and guide rails for condition
- Confirm the pump(s) start and stop on the float switches / level controls
- Clean the sump/wet well of silt and debris
- Test the high-level alarm activates correctly
- Record operation, alarm test, and sump condition in the log
What is a submersible pump?
A submersible pump operates submerged in the liquid it pumps, used in drainage sumps, wells, basements, and groundwater applications to remove water and prevent flooding. Because it sits in the wet well, it relies on float switches or level sensors to start and stop, and on duty/standby arrangements and high-level alarms for resilience. Out of sight, these pumps are easy to neglect until a flood reveals a failure. Maintenance verifies operation, the level controls and floats, the impeller and seals, and the alarms — keeping the protection against flooding reliable.
Typical Submersible Pump maintenance checklist
A practical starting point for planned preventive maintenance. Always refer to the manufacturer's O&M manual and site-specific requirements.
Visual Checks
- Inspect cabling, lifting chains, and guide rails for condition
Functional Checks
- Confirm the pump(s) start and stop on the float switches / level controls
- Verify duty/standby changeover and duty rotation operate
- Inspect float switches and level sensors for fouling and free movement
- Check the impeller and inlet for blockage by debris or silt
- Confirm seal integrity and check for water ingress to the motor
- Check motor current and run pattern for signs of wear or blockage
Cleaning & Housekeeping
- Clean the sump/wet well of silt and debris
Safety Checks
- Test the high-level alarm activates correctly
Record Keeping
- Record operation, alarm test, and sump condition in the log
Typical maintenance frequency
Suggested intervals for submersible pump maintenance. Actual frequencies should follow manufacturer guidance and site-specific risk assessments.
Quarterly
- •Confirm pump operation and changeover
- •Test high-level alarm
- •Check floats and inlet
Annually
- •Lift and inspect pump, impeller, and seals
- •Clean the sump/wet well
- •Cabling and guide rail check
- •Level control verification
Common faults and issues
Issues to be aware of when maintaining submersible pump equipment.
Safety and compliance notes
Key safety considerations for submersible pump maintenance. This is general guidance only — always follow OEM instructions, statutory requirements, and your organisation's safe systems of work.
Managing Submersible Pump documentation with PM Assist
PM Assist helps FM and building operations teams search their O&M manuals and building drawings in seconds. Upload your submersible pump documentation and ask questions like “Is this a duty/standby pump set?” or “Where is the high-level alarm indicated?” — and get source-cited answers instantly.
See PM Assist answer questions about a real submersible pump manual — try the live demo, no signup needed.
Take this checklist with you
Download the branded PDF, generate a custom version for your asset, or run AI search across all your building documentation.
Related free tools
Frequently asked questions
Manage your building documentation with AI
PM Assist gives FM teams instant access to O&M manuals, drawings, and maintenance knowledge — all searchable with AI.
- Upload and organise building documentation
- AI-powered search across all your manuals
- Source-cited answers for maintenance queries
- Team collaboration and access control
- No credit card required to start