BOREHOLE PUMP MAINTENANCE – 0723763173
Regular borehole pump maintenance helps keep water flowing reliably, reduces unexpected breakdowns, and identifies developing faults before they cause major damage. A borehole water system serves homes, farms, schools, commercial buildings, residential estates, institutions, and industrial facilities. When the pump or its supporting equipment fails, the interruption can affect daily activities and business operations.
Pro-Logic Technologies Limited provides technical support for borehole pump maintenance, performance inspections, flow and pressure checks, electrical assessments, control-system inspections, and troubleshooting. Our aim is to help customers understand the condition of their water supply equipment and take appropriate action when performance changes.
A borehole pump operates under conditions that can make faults difficult to detect early. The pump may be submerged deep underground, connected to a long rising main, and controlled by electrical equipment installed in a separate location. A small problem with a sensor, cable, valve, pipe connection, or pressure controller can affect the entire water supply system.
Professional borehole pump maintenance considers the pump, motor, electrical supply, control panel, rising main, storage tank, pressure equipment, and the borehole's ability to supply water. Maintaining these components as a complete system helps reduce the risk of recurring faults.
For borehole pump maintenance enquiries, contact Pro-Logic Technologies Limited on 0723763173 or visit https://prologictecnologies.co.ke.
WHY BOREHOLE PUMP MAINTENANCE IS IMPORTANT
A borehole pump should not be left unattended until it stops working. Routine inspections help establish normal operating conditions and make it easier to identify changes in performance.
Preventing unexpected breakdowns
A pump may show warning signs before it fails completely. These include a gradual reduction in flow, unusual vibration, repeated electrical trips, longer tank-filling times, changing pressure, or frequent starting and stopping.
When these signs are investigated early, the cause may be corrected before additional components are damaged.
Improving operating reliability
Reliable water delivery depends on the pump and its controls working together. A defective level switch can cause a storage tank to overflow or leave it empty. A faulty pressure switch can prevent a pressurised system from operating correctly. A damaged cable can cause electrical trips or prevent the motor from starting.
Routine borehole pump maintenance should therefore include checks of the supporting equipment, not only the pump itself.
Reducing avoidable repair costs
A minor fault that is ignored may lead to more extensive damage. For example, continued operation with inadequate water supply can damage a pump that is not designed to run dry. Repeated electrical trips may indicate a problem that requires proper diagnosis rather than repeated resetting.
Preventive maintenance cannot eliminate every failure, but it can help identify developing problems and support informed repair decisions.
Monitoring water supply performance
Changes in borehole water level, flow rate, pressure, or sediment content may indicate that the borehole or pumping system needs further assessment.
Recording operating data over time makes it easier to compare current performance with the system's original commissioning readings.
COMPONENTS THAT REQUIRE REGULAR MAINTENANCE
A complete maintenance programme should address the major components of the borehole water supply system.
1. Submersible borehole pump
The pump moves water from the borehole into the delivery pipe. Its condition affects the system's flow rate, pressure, and energy consumption.
Because the pump is installed below ground, it is not always practical to remove it for routine inspection. Instead, maintenance may begin with operational checks, flow measurements, pressure readings, and a review of electrical performance.
Pump removal should be considered when test results indicate a likely internal fault or when inspection is otherwise justified.
2. Electric motor
The motor drives the pump and must operate within its specified electrical and thermal limits. Maintenance checks may include reviewing the motor's running current, supply voltage, operating history, and protective-device performance.
Unusual current readings should be investigated in context. A motor's current depends on its design, supply conditions, hydraulic load, and operating point.
3. Electrical cable and connections
The pump cable carries power to the motor and may extend over a considerable distance. Damage to the cable or an unsuitable submerged joint can cause electrical faults.
Visible sections should be inspected for physical damage, poor termination, overheating, corrosion, and loose connections. Tests involving insulation resistance or other electrical measurements must be performed by qualified personnel using suitable procedures and equipment.
4. Control panel
The control panel may contain contactors, overload protection, relays, sensors, timers, phase-protection devices, or a variable-frequency drive.
Maintenance should confirm that the installed equipment is appropriate for the motor and that the controls operate as intended. Dust, moisture, overheating, damaged components, loose connections, and inappropriate settings can contribute to failure.
5. Rising main and delivery pipework
The rising main carries water from the submerged pump to the surface. Surface pipework then directs water to a tank, pressure vessel, irrigation network, or distribution system.
Check accessible pipework for leaks, damaged fittings, corrosion where applicable, unusual movement, and signs of pressure loss. A leak may reduce delivered flow and increase pumping costs.
6. Valves and non-return valves
Valves regulate water movement and help isolate parts of the system for servicing. A defective or incorrectly positioned valve can restrict flow or interfere with system operation.
A non-return valve is intended to limit reverse flow when the pump stops. If it fails, the system may experience backflow, pressure loss, or other operating problems, depending on the design.
7. Storage tank and level controls
Where the pump supplies a storage tank, inspect the tank's accessible fittings, inlet arrangement, overflow, and level-control system.
The level controls should stop and start the pump according to the intended operating sequence. Faulty controls can lead to overflow, inadequate storage, or unnecessary pump cycling.
8. Pressure vessel and pressure controls
Pressurised systems may use a pressure vessel, pressure switch, pressure transducer, or variable-frequency drive.
The equipment should be checked according to the manufacturer's instructions. Pressure-vessel pre-charge, where applicable, must be checked with the system isolated and depressurised as required by the equipment procedure.
A PRACTICAL BOREHOLE PUMP MAINTENANCE SCHEDULE
Maintenance intervals should reflect the manufacturer's recommendations, operating hours, water quality, installation conditions, and the importance of the water supply. The following schedule is a general planning guide rather than a substitute for equipment-specific instructions.
Routine operational checks
Record whether the pump starts and stops normally, whether the tank fills as expected, and whether there are changes in water flow, pressure, noise, or vibration.
Investigate sudden changes instead of waiting for the next scheduled inspection.
Monthly or periodic checks
For systems where monthly checks are appropriate, review the control panel, visible pipework, tank controls, pressure readings, and available operating records. Check for leaks, repeated trips, abnormal cycling, and signs of overheating.
The inspection interval may need to be shorter for heavily used or critical systems.
Scheduled technical inspections
At an interval determined by the installation conditions, arrange a more detailed assessment of electrical performance, flow rate, pressure, control functions, and accessible mechanical components.
Compare the results with previous readings. A gradual decline may be significant even when the pump continues to run.
Annual or manufacturer-recommended servicing
Where suitable for the equipment and operating conditions, arrange a comprehensive service according to the manufacturer's recommendations. This may include detailed electrical checks, protection-device verification, control-system inspection, and an assessment of whether pump removal or additional borehole investigation is justified.
A pump should not be removed automatically every year if the equipment design and operating conditions do not require it. Unnecessary removal introduces cost and can create installation risks.
HOW TO CHECK BOREHOLE PUMP PERFORMANCE
Performance testing is an important part of borehole pump maintenance because it provides measurable information about the system's condition.
Measuring water flow
Flow rate describes the volume of water delivered over a specific period. It can be measured using an appropriate flow meter or another suitable measurement method.
For example, if a pump delivers 900 litres in 15 minutes, the measured flow rate is 60 litres per minute under those test conditions.
The result should be recorded alongside the delivery pressure, pumping water level, and relevant valve settings. Comparing flow readings taken under different conditions without accounting for those differences can lead to incorrect conclusions.
Checking delivery pressure
A pressure gauge can help determine whether the system is delivering water at the expected pressure.
Low pressure may result from a pump problem, leakage, excessive friction losses, an incorrect control setting, or a change in demand. High pressure at low flow does not necessarily mean that the pump can deliver the required volume of water.
Pressure should be assessed at a suitable test point and interpreted in relation to the system design.
Monitoring pumping water level
The water level during pumping may fall below the static level because of drawdown. Monitoring this change helps assess whether the borehole is responding as expected.
If the pumping water level continues to decline significantly or approaches the pump's required minimum submergence, the pumping rate and borehole condition should be reviewed.
Checking motor current
Motor current readings can help identify some electrical or operating abnormalities when compared with the motor nameplate and baseline data.
Abnormal readings may be associated with overload, supply imbalance, a motor fault, or changes in hydraulic loading. Current alone is not sufficient to identify the exact cause, so further testing may be necessary.
Reviewing energy consumption
Where energy readings are available, compare consumption with the volume of water delivered and the operating conditions. A significant change may justify an investigation into pump performance, leakage, operating schedules, or control settings.
Reliable comparisons require consistent measurement periods and consideration of changes in demand and pumping head.
COMMON BOREHOLE PUMP PROBLEMS FOUND DURING MAINTENANCE
Pump does not start
Possible causes include a failed power supply, tripped protective device, defective contactor, faulty pressure switch, failed level sensor, damaged cable, or motor fault.
The technician should begin with safe electrical and control-system checks. Repeatedly resetting a protective device without identifying why it operated can increase the risk of further damage.
Pump runs but delivers no water
Possible causes include a low water level, blocked pump, damaged hydraulic components, a disconnected or leaking rising main, or an incorrect installation arrangement.
The pump should be stopped if it may be operating without adequate water. Further diagnosis should establish whether the problem originates in the borehole, pump, pipework, or electrical system.
Reduced water flow
Reduced flow may result from pump wear, pipe restrictions, a partly closed valve, leakage, excessive drawdown, or a mismatch between pump capacity and operating head.
A flow test combined with pressure and water-level measurements helps narrow down the cause.
Frequent electrical tripping
Frequent tripping may indicate an overload, short circuit, damaged cable, supply fault, moisture ingress, or incorrect protection settings.
The system should be isolated and examined by a qualified technician before being returned to service.
Pump starts and stops repeatedly
Rapid cycling may result from a leaking distribution system, faulty level controls, unsuitable pressure settings, an incorrectly sized pressure vessel, or a control-system fault.
The correct solution depends on the installed arrangement. Changing the settings without checking the cause may create further operating problems.
Tank takes too long to fill
Slow tank filling can be caused by reduced pump output, changes in borehole water level, pipe leakage, restrictions, or increased delivery head.
Record the filling time and compare it with the normal operating baseline. Where possible, measure actual flow instead of relying on tank-filling time alone.
Water contains sand or sediment
Sediment can be associated with borehole-development issues, changes in the water-bearing formation, excessive pumping, or unsuitable pump placement.
Persistent sediment should be investigated because abrasive particles may accelerate wear in the pump and other water system components.
ELECTRICAL SAFETY DURING BOREHOLE PUMP MAINTENANCE
Borehole pump systems combine water, electricity, submerged equipment, and sometimes heavy lifting operations. Maintenance must be carried out with appropriate safety controls.
Isolate the electrical supply
Before opening the control panel or working on electrical connections, isolate the supply and verify that the equipment is de-energised using suitable procedures.
Where applicable, use lockout and tagging procedures to prevent accidental re-energisation.
Use suitable test instruments
Electrical testing should be performed using instruments rated for the installation and the measurement being undertaken. Test results must be interpreted by a competent person familiar with the motor and control system.
Check earthing and protection
The earthing arrangement and protective devices should be inspected and tested as required by the applicable electrical standards. Protective devices must be correctly selected for the installation.
Avoid unsafe pump handling
A submerged pump and its water-filled rising main can impose significant loads. Appropriate lifting equipment, secure handling arrangements, and trained personnel are necessary when removing or reinstalling the pump.
The electrical cable should not be used as a lifting rope.
Protect the water supply
Work at the borehole head should preserve the sanitary protection of the borehole. Openings should not be left exposed unnecessarily, and tools or materials should not be allowed to contaminate the water source.
MAINTAINING BOREHOLE PUMPS IN HOMES AND RESIDENTIAL ESTATES
Domestic water systems should provide dependable supply for cooking, cleaning, bathing, laundry, and other household uses.
For homes, maintenance should focus on the pump's normal operation, tank-filling performance, level controls, visible pipework, and electrical protection.
In residential estates and apartment buildings, the water demand may be much higher. The system may include multiple tanks, pressure zones, booster pumps, or automatic controls.
Maintenance should consider the complete installation and establish whether the borehole, pump, storage capacity, and distribution system can meet the property's demand.
If several buildings share one borehole, operating schedules and storage levels may need coordination. A system that performs adequately during low-demand periods may struggle when many users draw water simultaneously.
MAINTAINING BOREHOLE PUMPS ON FARMS
Farm water systems may supply livestock, irrigation, washing facilities, and agricultural operations.
Maintenance requirements depend on the type of use and the operating schedule. Irrigation pumps may run for extended periods, while livestock systems may operate through automatic tanks or float valves.
Check the accessible pipework, valves, filters, pressure controls, and storage arrangements. Monitor changes in flow and investigate any evidence that the borehole is being pumped faster than it can sustainably supply water.
Where irrigation filters are installed, follow the filter manufacturer's cleaning and service instructions. A blocked filter can restrict flow and alter the operating conditions of the pump.
If water is supplied to several farm areas, inspect the distribution network for leakage. A leak can increase operating hours and energy consumption even when the pump itself remains in good condition.
MAINTAINING BOREHOLE PUMPS IN COMMERCIAL AND INDUSTRIAL FACILITIES
Commercial and industrial water systems may support production equipment, cleaning operations, cooling systems, staff facilities, and other critical processes.
An unexpected pump failure can interrupt operations, so the maintenance plan should reflect the consequences of losing water supply.
Where appropriate, facilities can maintain records of pump run hours, flow rate, pressure, motor current, service history, and fault events.
If a standby pump is installed, its readiness should be verified according to the system design. A standby pump that has not been tested may fail when required.
Control panels, pressure equipment, valves, and automation systems should be maintained in accordance with the manufacturer's requirements and applicable safety standards.
WHEN SHOULD A BOREHOLE PUMP BE REMOVED FOR INSPECTION?
Not every performance problem requires the pump to be removed immediately. Removal is a significant maintenance operation and should be justified by the available evidence.
Pump removal may be appropriate when testing indicates an internal mechanical fault, the pump repeatedly fails despite external repairs, the motor or cable requires inspection, or the equipment needs replacement.
Before removal, check whether the fault could be caused by a surface control panel, supply problem, pressure switch, level sensor, valve, or delivery pipework. These faults may sometimes be resolved without extracting the submerged pump.
When removal is necessary, the operation should use appropriate lifting equipment and safe handling procedures. The pump, cable, rising main, and associated components should be inspected systematically, and the findings should be recorded.
After repairs or replacement, the installation should be recommissioned and tested before normal operation resumes.
BOREHOLE PUMP REPAIR OR REPLACEMENT?
The choice between repairing and replacing a pump depends on its condition, age, availability of compatible parts, repair cost, expected reliability, and the cause of failure.
Repair may be appropriate when the fault is clearly identified and the affected components can be restored reliably. Replacement may be preferable when the pump is extensively damaged, unsuitable for the current duty, or repeatedly failing.
The decision should also consider the condition of the motor, cable, rising main, controls, and borehole. Installing a new pump without correcting the underlying problem can result in another failure.
For example, a replacement pump may still suffer from poor output if the borehole yield has declined. Similarly, a new pump may continue tripping if the electrical supply or protection system is defective.
A sound maintenance assessment identifies the likely cause before recommending repair or replacement.
RECORD KEEPING FOR BOREHOLE PUMP MAINTENANCE
Maintenance records make it easier to understand how a system changes over time.
A useful record may include:
- Borehole identification and installation details.
- Pump and motor make, model, and rated specifications.
- Pump-setting depth, where known.
- Static and pumping water levels, where measured.
- Flow rate and delivery pressure.
- Supply voltage and motor current, where appropriate.
- Control-panel settings and protective-device details.
- Maintenance dates, reported symptoms, and work completed.
- Replaced components and test results after repairs.
These records can help a technician distinguish a new fault from an ongoing problem. They also support planning for spare parts, servicing, and future equipment replacement.
WHY CHOOSE PRO-LOGIC TECHNOLOGIES LIMITED?
Pro-Logic Technologies Limited supports customers who require technical assistance with borehole pump maintenance, system inspections, performance testing, troubleshooting, and related electrical and control-system checks.
A useful maintenance visit begins by understanding the reported symptoms and reviewing the available installation details. Depending on the system, the assessment may include checking the control panel, measuring operating pressure, evaluating flow, reviewing motor readings, and inspecting accessible pipework and controls.
Recommendations should be based on observed conditions and suitable test results. Where a problem requires pump extraction, borehole investigation, or specialist work, the next steps should be explained before proceeding.
For borehole pump maintenance, contact Pro-Logic Technologies Limited on 0723763173.
Website: https://prologictecnologies.co.ke
FREQUENTLY ASKED QUESTIONS ABOUT BOREHOLE PUMP MAINTENANCE
How often should a borehole pump be serviced?
The service interval depends on the pump manufacturer's recommendations, operating hours, water quality, and the importance of the water supply. Regular operational checks should be combined with scheduled technical inspections appropriate to the installation.
What are the signs that a borehole pump needs maintenance?
Warning signs include reduced flow, changing pressure, frequent electrical trips, unusual noise, vibration, longer tank-filling times, excessive cycling, and visible leakage.
Can maintenance prevent every pump breakdown?
No. Maintenance can identify developing faults and reduce some avoidable failures, but it cannot eliminate all risks. Equipment age, borehole conditions, power disturbances, and unexpected component failures can still cause problems.
Why is my borehole pump using more electricity?
Possible causes include changes in operating head, leakage, longer running hours, control problems, declining pump performance, or changes in demand. Energy use should be assessed alongside the amount of water delivered and the operating conditions.
Should I keep resetting a pump that trips?
No. Repeated tripping should be investigated. A protective device may be responding to a genuine electrical or operating fault. The system should be safely isolated and assessed by a qualified technician.
Does a borehole pump need testing after repair?
Yes. Suitable post-repair checks help confirm that the pump and associated equipment are operating correctly. Depending on the work, testing may include flow, pressure, electrical readings, control functions, and water-level monitoring.
Can a faulty control panel damage a pump?
A defective or incorrectly configured control system can cause inappropriate starting, stopping, or failure to protect the pump under certain conditions. The control system should be checked for compatibility, correct settings, and proper operation.
What should I do if my pump produces less water than before?
Record the symptoms and, if safe and practical, note the tank-filling time or available pressure readings. Avoid repeatedly operating a pump that appears to be running without adequate water. Arrange an assessment to determine whether the cause is related to the pump, borehole, pipework, controls, or water demand.
BOOK BOREHOLE PUMP MAINTENANCE
A well-maintained borehole water system is easier to monitor, diagnose, and manage. Regular inspection and performance checks can reveal changes in flow, pressure, water level, electrical behaviour, and control-system operation before they lead to more serious disruption.
Pro-Logic Technologies Limited provides technical assistance for borehole pump maintenance, testing, troubleshooting, and related system checks.
For service enquiries, call 0723763173.
Visit https://prologictecnologies.co.ke for more information.
Pro-Logic Technologies Limited — Borehole Pump Maintenance, Testing and Troubleshooting.